Difference between revisions of "Tesla Bosch Radar"

From Tinkla: Tinkering with Tesla
m (→‎OP Code Changes (non-Tesla cars))
m (→‎Installing the radar kit)
 
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  If you need instructions for the Tesla Bosch Radar to use with EON or other (non Tesla) cars, the information can be found [[Tesla_Bosch_Radar_EON|here]].
 
  If you need instructions for the Tesla Bosch Radar to use with EON or other (non Tesla) cars, the information can be found [[Tesla_Bosch_Radar_EON|here]].
−
[[File:Tesla Bosch Radar Wiring Harness.png|thumb]]
+
[[File:Tesla Radar Wiring Harness for Tesla Unity and Tinkla OBD-C Adapter.png|thumb|Tesla Bosch Radar Wiring Harness for Tesla Unity and Tinkla OBD-C Adapter]]
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[[File:Giraffe rev B Radar Diagram.png|thumb]] [[File:Giraffe rev A.png|thumb]]
 
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[[File:The Giraffe rev A board. Use CAN1 for radar..png|thumb]]
 
 
The Bosch radar made for Tesla (Bosch MRRevo14, and with few different part numbers like 1038224-00-A/B or 1057551-00-B) have been used on Tesla Model S cars from October 2014 (AP1) until they have been replaced by the Continental radar with AP2.5). The main difference between 1038224-00-B and 1038224-00-A is that the A version does not have the heater element for winter weather (to melt snow and ice).  
 
The Bosch radar made for Tesla (Bosch MRRevo14, and with few different part numbers like 1038224-00-A/B or 1057551-00-B) have been used on Tesla Model S cars from October 2014 (AP1) until they have been replaced by the Continental radar with AP2.5). The main difference between 1038224-00-B and 1038224-00-A is that the A version does not have the heater element for winter weather (to melt snow and ice).  
  
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  This radar can ben used on any OP supported car. To insall the radar for a non-Tesla car please find a branch that has the code already done or modify your branch and add the code needed to make the radar talk to the Panda code for your car. More info available [[Tesla_Bosch_Radar_EON|here]].
 
  This radar can ben used on any OP supported car. To insall the radar for a non-Tesla car please find a branch that has the code already done or modify your branch and add the code needed to make the radar talk to the Panda code for your car. More info available [[Tesla_Bosch_Radar_EON|here]].
  
−
=== Deconding the radar ===
+
=== Decoding the radar ===
  
 
With a little help from a group of enthusiasts, we were able to reverse engineer all the messages that AP sends to the radar in order to make it "talk". Then we identified the structure of the CAN messages that describe each of the 32 objects this radar can detect. Signals like longitudinal distance, lateral distance (vs radar), longitudinal relative speed, lateral relative speed, longitudinal acceleration, certainty of detection, etc are all now processed and sent to the radar daemon of OpenPilot, improving longitudinal control for the car.
 
With a little help from a group of enthusiasts, we were able to reverse engineer all the messages that AP sends to the radar in order to make it "talk". Then we identified the structure of the CAN messages that describe each of the 32 objects this radar can detect. Signals like longitudinal distance, lateral distance (vs radar), longitudinal relative speed, lateral relative speed, longitudinal acceleration, certainty of detection, etc are all now processed and sent to the radar daemon of OpenPilot, improving longitudinal control for the car.
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=== What you need ===
 
=== What you need ===
  
−
In order to get the radar working on your car, you need to buy a radar, a mounting bracket (few options here), a connector and then to create a harness and run the cable back to the [https://tinkla.us/t/tinkla_obdc Tinkla OBD-C Adapter].  
+
In order to get the radar working on your car, you need to buy [https://shop.tinkla.us/Tinkla-Radar-for-use-with-OpenPilot-on-PreAP-Tesla-Model-S-p521235662 a radar], a [https://shop.tinkla.us/Tinkla-Radar-Bracket-for-Tesla-Model-S-Behind-Nosecone-p521235665 mounting bracket], and a [https://shop.tinkla.us/Tinkla-Radar-Harness-p514922906 radar harness] and run the cable back to the [https://tinkla.us/t/tinkla_obdc Tinkla OBD-C Adapter].  
  
−
For a permanent install I recommend following the diagram in the Tesla Bosch Radar Wiring Harness image at the top of the page. This setup uses the EPAS power (which is ignition power) to trigger a relay and feed power to both the radar electronics and the heater unit of the radar. Make sure the line from the battery is fused. Also please use the [[AWG chart]] to select the right wire needed for your setup.
+
DIY people can also follow the old method using a 3D printed mount and a home-made harness. Keep in mind these mounts stay farther back, are influenced by the harness and 12V post that are close to them AND are not adjustable, aka can not be calibrated. But, if you like a challenge [https://docs.google.com/document/d/1rgxl7S7u-taUV4iiAu5chDT_CyEHzuKbsMeVpKdeSaw/mobilebasic David has a very nice set of instructions].
  
−
=== Obtain the VIN programmed in your radar ===
+
=== Installing the radar kit ===
  
−
Chances are you bought your Tesla Bosch Radar on ebay and was previously installed and programmed in a car (so it will only respond if we send the right VIN, epay type and position). The first step in getting the radar to send data is to obtain the VIN that was previously programmed. To get the VIN you will have to use the [https://github.com/BogGyver/openpilot/blob/test_teslaradar/selfdrive/car/tesla/radar_tools/readRadarVin.py readRadarVin.py] script (if you are on one of my branches the file is located in <source inline>/data/openpilot/selfdrive/car/tesla/radar_tools/</source>).  
+
Start by taking out the nose cone and disassembling the frunk completely (needed to connect the ground of the harness only).
  
−
Once you have the scrip do the following steps:
+
The radar mount uses the mounting point for the 12V post (which is then relocated on the radar mount). Start by taking out the two screws that hold the 12V post. Make sure the rubber cap on the 12V post remains on at all times.
−
* SSH into the EON
+
 
−
* <source inline>cd /data/openpilot/selfdrive/car/tesla/radar_tools/</source> (or go to the location where you saved the script)
+
[[File:12V post .jpg|frameless]]
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* kill OpenPilot:
+
 
−
** <source inline>tmux kill-session -t comma</source>
+
 
−
* set the python environment variable
+
 
−
** <source inline>export PYTHONPATH="/data/openpilot/"</source>
+
Once you remove the two screws, save them somewhere in case you want later to remove the bracket and install the 12V post back. We will not need them for this install. Set the 12V post aside.
−
* run the readRadarVin.py script
+
 
−
** <source inline>python readRadarVin.py</source>
+
[[File:12V post removed.jpg|frameless]]
 +
 
 +
Attach the radar bracket to the front bumper using the provided 5mm black screws and 5mm split lock washers. Ensure the bracket is well secured. Remove the provided 6mm lock nuts and washers from the two posts on the bracket and mount the 12V post. Add the flat washers and tighten the 6mm lock nuts.
 +
 
 +
Carefully install the radar. The connector for the harness will go up. once the top part is inserted and locked in position push in the bottom until it clicks.
 +
 
 +
[[File:Bracket installed.jpg|frameless]]
 +
 
 +
Make sure the harness that runs along the bumper (which goes to the front lights and the park sensors) goes over the radar harness connector in the back. Otherwise the metal in the harness will affect the radar.
 +
 
 +
[[File:Harness over the radar connector.jpg|frameless]]
 +
 
 +
Now that we are done installing the radar it is time to run the Tinkla Radar Harness. First connect the harness to the radar. Make sure it is well secured. Will require a little force as it is a water-tight harness.
 +
 
 +
Second step is to attach the ground. The ground post is behind the radar in the frunk area, as shown in the image below. Take the nut out, insert the ground connector there, then tighten well the nut back.
  
−
The 17 character VIN number will be displayed in the output of the script. Write it down. It should look something like <source inline> 5YJSA1E41FF156789</source>
+
[[File:Ground post location.jpg|frameless]]
  
−
=== Modifying the configuration file for radar ===
+
Next we will connect the 12v to the fuse box on the right side of the frunk as you look at the car from the front. Remove fuse F75 from the fuse box. Plug this fuse into the remaining slot in the fuse tap that came with the harness and plug the fuse tap in the location from which you removed the fuse.
  
−
Now that we have the VIN, we need to configure the [[OpenPilot Configuration File]] with the needed parameters.
+
[[File:Power for the tinkla radar.jpg|frameless]] [[File:Fuse box F75.png|frameless]]
  
−
[OP_CONFIG]
+
Now for the can wires, start from the frunk area and go under the fender to the door, then through the door seal inside the car. There was already a hole in the door seal there for me. Your miles may vary.  
−
use_tesla_radar = True
 
−
enable_radar_emulation = True
 
−
radar_vin = YOUR_RADAR_VIN_HERE
 
−
radar_offset = 0.0
 
−
radar_epas_type = 0
 
−
radar_position = 0
 
  
−
So make sure that the '''use_tesla_radar''' variable is set to True.
+
[[File:Radar harness from frunk.jpg|frameless]]  [[File:Radar harness at door.jpg|frameless]]
 +
[[File:Radar harness in car.jpg|frameless]]
  
−
'''radar_vin''' need to match the VIN you obtain from the readRadarVin.py script (do not put any quotes or any other characters on that line, just the VIN). Example: '''5YJSA1E41FF156789'''
+
Now just connect the JST2.5 connector at the end of the radar harness inside the OBD-C adapter in the radar port
 +
[[File:Tinkla OBD-C Adapter Schematics.jpg|frameless]].
  
−
'''radar_offset''' has to be changed only if your radar is not centered on the car (some cars have it closer to the left side of the car, in which case the offset should be positive and equal to the distance between the center of the radar and center of the car, in meters; for example 58cm will be 0.58 for offset).
+
With the harness ran from front to back, now it's time to tidy it up a little and secure it in few places with some zip ties. Then put the frunk back together.  
  
−
The following settings need to match the values that were on '''the donor car''', not your car. Use the [https://teslatap.com/vin-decoder/ VIN Decoder] to understand the Tesla model, year and other information that can help you program these parameters.
+
In openpilot, setup the radar configuration (see below), follow the instructions to perform the VIN Learn, and then follow the process for the radar calibration. Once done you can put the nosecone back and you're done.
  
−
'''radar_epas_type''' is the type of EPAS that was on the donor car. The value can be between 0 and 4:
+
When putting the nosecone back, please make sure the harness that goes to the park sensor does not get in front of the radar as you install the nosecone.
−
* 0 - Bosch L538
 
−
* 1 - Bosch L405
 
−
* 2 - Mando FGR64
 
−
* 3 - Mando VGR66
 
−
* 4 - Mando VGR66 Gen3
 
  
−
For pre-facelift AP1 cars you will find mostly 0 or 1. Post facelift cars are mostly 3 or 4. But nothing can give you the exact value and you might have to try various values until RADC_a062_strRackMismatch in TeslaRadarAlertMatrix message is 0. See the [[Tesla_Bosch_Radar#Troubleshooting_the_Tesla_Bosch_Radar|troubleshooting section]] to learn how to look at the TeslaRadarAlertMatrix message in [[Cabana]].
+
=== Modifying the configuration settings for radar ===
  
−
'''radar_position''' is the position of the radar in the donor car. The value can be between 0 and 2:
+
It is important now to take the time to configure the [[Tesla_Unity_Configuration|setting in Tesla Unity]] in order to activate the radar. Before moving to the next step, please turn ON the toggle for <b>Use Tesla Radar </b> and appropriately configure the <b>Radar behind nosecone</b> and <b>Radar offset</b>. When using the Tinkla Radar Bracket which mounts the radar upside down, also enable the toggle for <b>Use Radar Upside Down</b>
−
* 0 - Model S (pre facelift)
 
−
* 1 - Model S (post facelift)
 
−
* 2 - Model X
 
  
−
You can use the manufacturing date and model from [https://teslatap.com/vin-decoder/ VIN Decoder] to estimate your value. 2014 and 2015 Model S will always be 0. 2017 and above Model S will be 1. Model X will be always 2. But again nothing will give you the exact value and you might have to try 0 or 1 if the Model S was manufactured in 2016 because it could be 0 (pre April 2016) or 1 (post April 2016). The value of RADC_a061_radPositionMismatch in TeslaRadarAlertMatrix message should be 0 if programmed correctly. See the [[Tesla_Bosch_Radar#Troubleshooting_the_Tesla_Bosch_Radar|troubleshooting section]] to learn how to look at the TeslaRadarAlertMatrix message in [[Cabana]].
+
=== Programming your radar - VIN Learning ===
  
−
You can find an explanation of each of the parameters [[OpenPilot Configuration File|here]].  
+
Chances are you bought your Tesla Bosch Radar on ebay and was previously installed and programmed in a car (so it will only respond if we send the right VIN, epas type and position). In order to make the radar work on your car you will have to go through the <b>Radar VIN Learn</b> process that can be started using the button with the same name at the bottom of the <b>Tesla preAP</b> settings page.
  
−
Once done, reboot your EON.
+
#Ensure your Radar is installed in your vehicle and connected to the [https://tinkla.us/t/tinkla_obdc Tinkla OBD-C Adapter] or to your specific harness.
 +
#Ensure that all the [[Tesla_Unity_Configuration#Tesla_preAP|settings are configured]] correctly for your radar, especially enabling the radar and specifying if it is behind the nose cone or not.
 +
#Using the <b>Radar VIN Learn</b> button under the <b>Tesla preAP</b> tab of [[Tesla_Unity_Configuration#Tesla_preAP|settings]] start the programming process
 +
#Before hitting the <b>VIN Lrn</b> button, ensure your car is on (in P - Park) and continue to keep your foot on the brake throughout the process.
 +
#Hit the <b>VIN Lrn</b> button and the screen will show the progress. Your car might emit warnings and sounds during this process, which is normal.
 +
#Once process is complete, allow the car to go in "CAR OFF" mode and reboot your Comma devkit.
 +
#You are now ready to use your Tesla Bosch Radar.
  
 
=== Calibrating your radar ===
 
=== Calibrating your radar ===
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* the [https://github.com/BogGyver/openpilot/blob/test_teslaradar/selfdrive/car/tesla/radar_tools/calibrateRadar.py calibrateRadar.py] script which for those running on one of my Tesla branches is located in '''/data/openpilot/selfdrive/car/tesla/radar_tools/'''
 
* the [https://github.com/BogGyver/openpilot/blob/test_teslaradar/selfdrive/car/tesla/radar_tools/calibrateRadar.py calibrateRadar.py] script which for those running on one of my Tesla branches is located in '''/data/openpilot/selfdrive/car/tesla/radar_tools/'''
 
* a 4ft (120 cm) metal pole that can stay vertically by itself (I personally use a microphone stand)
 
* a 4ft (120 cm) metal pole that can stay vertically by itself (I personally use a microphone stand)
 +
* a [https://www.amazon.com/dp/B07DXYSC6F?ref=ppx_pop_mob_ap_share 3.5mm hex head nut driver] with a long neck that can fit through the front grille holes
 
* tape measure
 
* tape measure
 
* chalk
 
* chalk
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Now that we have the line that marks the zero dY line, let's start the calibration script:
 
Now that we have the line that marks the zero dY line, let's start the calibration script:
−
* start OP (OP might stop when you leave the car; what i did was to put open the driver window, put a heavy backpack on the driver seat, connect the driver seatbelt and turn the car on; this way it ensured that OP remained running)  
+
* start OP (OP might stop when you leave the car; what i did was to leave open the driver window, put a heavy backpack on the driver seat, connect the driver seatbelt and turn the car on; this way it ensured that OP remained running)  
 
* SSH into EON and go to the folder where the calibrateRadar.py is
 
* SSH into EON and go to the folder where the calibrateRadar.py is
 
**<source inline>cd /data/openpilot/selfdrive/car/tesla/radar_tools/</source>
 
**<source inline>cd /data/openpilot/selfdrive/car/tesla/radar_tools/</source>
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=== Troubleshooting the Tesla Bosch Radar ===
 
=== Troubleshooting the Tesla Bosch Radar ===
  
−
The radar send data for the first 5 seconds no matter what we send to it. But if we are sending the wrong info (VIN, position or epas) it will stop sending changes to the data after 5 seconds. At this point we have to see what exactly is happening with the radar by looking at the allerts it generates.
+
The radar sends data for the first 5 seconds no matter what we send to it. But if we are sending the wrong info (VIN, position or epas) it will stop sending changes to the data after 5 seconds. At this point we have to see what exactly is happening with the radar by looking at the alerts it generates.
  
−
You can use [[cabana]] and paste the following code in the DBC in order to understand what errors the radar is sending and what you need to change. Once you opened your cabana drive, click Load DBC, then Upload, and copy and paste the content from below to the DBC area. Then just look at the message called TeslaRadarAlertMatrix and see if you have any errors. Calibration warnings will not stop radar from operating.
+
In order to do so you can run the script created to get the errors from the radar.
−
(Make sure you're looking at 1:501 for TeslaRadarAlertMatrix, not 0:501)
 
  
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VERSION ""
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* start OP
−
NS_ :
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* SSH into EON and go to the folder where the getRadarErrorCodes.py is
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  NS_DESC_
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**<source inline>cd /data/openpilot/selfdrive/car/tesla/radar_tools/</source>
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  CM_
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* set the python environment
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  BA_DEF_
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** <source inline>export PYTHONPATH="/data/openpilot/"</source>
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  BA_
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* run the calibration script
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  VAL_
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** <source inline>python getRadarErrorCodes.py</source>
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  CAT_DEF_
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The script will start showing errors from the radar (if present) or say <b>No Errors</b> if everything works as expected.
−
  CAT_
 
−
  FILTER
 
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  BA_DEF_DEF_
 
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  EV_DATA_
 
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  ENVVAR_DATA_
 
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  SGTYPE_
 
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  SGTYPE_VAL_
 
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  BA_DEF_SGTYPE_
 
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  BA_SGTYPE_
 
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  SIG_TYPE_REF_
 
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  VAL_TABLE_
 
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  SIG_GROUP_
 
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  SIG_VALTYPE_
 
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  SIGTYPE_VALTYPE_
 
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  BO_TX_BU_
 
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  BA_DEF_REL_
 
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  BA_REL_
 
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  BA_DEF_DEF_REL_
 
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  BU_SG_REL_
 
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  BU_EV_REL_
 
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  BU_BO_REL_
 
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  SG_MUL_VAL_
 
−
BS_:
 
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BU_:  FrontCamera Radar
 
−
BO_ 769 TeslaRadarSguInfo: 8 Radar
 
−
  SG_ RADC_VerticalMisalignment : 0|8@1+ (1,0) [0|255] ""  FrontCamera
 
−
  SG_ RADC_SCUTemperature : 8|8@1+ (1,-128) [-128|127] ""  FrontCamera
 
−
  SG_ RADC_VMA_Plaus : 16|8@1+ (1,0) [0|255] ""  FrontCamera
 
−
  SG_ RADC_SGU_ITC : 24|8@1+ (1,0) [0|255] ""  FrontCamera
 
−
  SG_ RADC_HorizontMisalignment : 32|12@1+ (1,0) [0|4096] ""  FrontCamera
 
−
  SG_ RADC_SensorDirty : 44|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_HWFail : 45|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_SGUFail : 46|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_SGUInfoConsistBit : 47|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
BO_ 770 TeslaRadarTguInfo: 8 Radar
 
−
  SG_ RADC_ACCTargObj1_sguIndex : 0|6@1+ (1,0) [0|63] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj2_sguIndex : 6|6@1+ (1,0) [0|63] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj3_sguIndex : 12|6@1+ (1,0) [0|63] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj4_sguIndex : 18|6@1+ (1,0) [0|63] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj5_sguIndex : 24|6@1+ (1,0) [0|63] ""  FrontCamera
 
−
  SG_ unused30 : 30|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_TGUInfoConsistBit : 31|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj1_dBPower : 32|16@1+ (1,0) [0|65535] ""  FrontCamera
 
−
  SG_ RADC_ACCTargObj5_dBPower : 48|16@1+ (1,0) [0|65535] ""  FrontCamera
 
−
BO_ 1281 TeslaRadarAlertMatrix: 8 Radar
 
−
  SG_ RADC_a001_ecuInternalPerf : 0|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a002_flashPerformance : 1|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a003_vBatHigh : 2|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a004_adjustmentNotDone : 3|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a005_adjustmentReq : 4|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a006_adjustmentNotOk : 5|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a007_sensorBlinded : 6|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a008_plantModeActive : 7|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a009_configMismatch : 8|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a010_canBusOff : 9|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a011_bdyMIA : 10|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a012_espMIA : 11|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a013_gtwMIA : 12|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a014_sccmMIA : 13|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a015_adasMIA : 14|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a016_bdyInvalidCount : 15|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a017_adasInvalidCount : 16|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a018_espInvalidCount : 17|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a019_sccmInvalidCount : 18|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a020_bdyInvalidChkSm : 19|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a021_espInvalidChkSm : 20|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a022_sccmInvalidChkSm : 21|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a023_sccmInvalidChkSm : 22|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a024_absValidity : 23|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a025_ambTValidity : 24|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a026_brakeValidity : 25|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a027_CntryCdValidity : 26|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a028_espValidity : 27|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a029_longAccOffValidity : 28|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a030_longAccValidity : 29|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a031_odoValidity : 30|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a032_gearValidity : 31|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a033_steerAngValidity : 32|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a034_steerAngSpdValidity : 33|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a035_indctrValidity : 34|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a036_vehStandStillValidity : 35|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a037_vinValidity : 36|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a038_whlRotValidity : 37|1@1+ (1,0) [0|1] "" FrontCamera
 
−
  SG_ RADC_a039_whlSpdValidity : 38|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a040_whlStandStillValidity : 39|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a041_wiperValidity : 40|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a042_xwdValidity : 41|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a043_yawOffValidity : 42|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a044_yawValidity : 43|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a045_bsdSanity : 44|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a046_rctaSanity : 45|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a047_lcwSanity : 46|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a048_steerAngOffSanity : 47|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a049_tireSizeSanity : 48|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a050_velocitySanity : 49|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a051_yawSanity : 50|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a052_radomeHtrInop : 51|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a053_espmodValidity : 52|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a054_gtwmodValidity : 53|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a055_stwmodValidity : 54|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a056_bcmodValidity : 55|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a057_dimodValidity : 56|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a058_opmodValidity : 57|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a059_drmiInvalidChkSm : 58|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a060_drmiInvalidCount : 59|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a061_radPositionMismatch : 60|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ RADC_a062_strRackMismatch : 61|1@1+ (1,0) [0|1] ""  FrontCamera
 
−
  SG_ unused62 : 62|2@1+ (1,0) [0|3] ""  FrontCamera
 

Latest revision as of 21:54, 4 January 2023

If you need instructions for the Tesla Bosch Radar to use with EON or other (non Tesla) cars, the information can be found here.
Tesla Bosch Radar Wiring Harness for Tesla Unity and Tinkla OBD-C Adapter

The Bosch radar made for Tesla (Bosch MRRevo14, and with few different part numbers like 1038224-00-A/B or 1057551-00-B) have been used on Tesla Model S cars from October 2014 (AP1) until they have been replaced by the Continental radar with AP2.5). The main difference between 1038224-00-B and 1038224-00-A is that the A version does not have the heater element for winter weather (to melt snow and ice).

The radar has a range of about 160m and for the short beam a cone of 45°.

Bosch radars

Many other car manufacturers use the same radar hardware, including Honda, Nissan, VW, Audi, etc. But Tesla (AFAIK) is the only one that reads and processes raw data from the radar instead of letting the radar make the decision about longitudinal control action needed (acceleration or deceleration). 

This radar can ben used on any OP supported car. To insall the radar for a non-Tesla car please find a branch that has the code already done or modify your branch and add the code needed to make the radar talk to the Panda code for your car. More info available here.

Decoding the radar

With a little help from a group of enthusiasts, we were able to reverse engineer all the messages that AP sends to the radar in order to make it "talk". Then we identified the structure of the CAN messages that describe each of the 32 objects this radar can detect. Signals like longitudinal distance, lateral distance (vs radar), longitudinal relative speed, lateral relative speed, longitudinal acceleration, certainty of detection, etc are all now processed and sent to the radar daemon of OpenPilot, improving longitudinal control for the car.

What you need

In order to get the radar working on your car, you need to buy a radar, a mounting bracket, and a radar harness and run the cable back to the Tinkla OBD-C Adapter. 

DIY people can also follow the old method using a 3D printed mount and a home-made harness. Keep in mind these mounts stay farther back, are influenced by the harness and 12V post that are close to them AND are not adjustable, aka can not be calibrated. But, if you like a challenge David has a very nice set of instructions.

Installing the radar kit

Start by taking out the nose cone and disassembling the frunk completely (needed to connect the ground of the harness only).

The radar mount uses the mounting point for the 12V post (which is then relocated on the radar mount). Start by taking out the two screws that hold the 12V post. Make sure the rubber cap on the 12V post remains on at all times.

12V post .jpg


Once you remove the two screws, save them somewhere in case you want later to remove the bracket and install the 12V post back. We will not need them for this install. Set the 12V post aside.

12V post removed.jpg

Attach the radar bracket to the front bumper using the provided 5mm black screws and 5mm split lock washers. Ensure the bracket is well secured. Remove the provided 6mm lock nuts and washers from the two posts on the bracket and mount the 12V post. Add the flat washers and tighten the 6mm lock nuts.

Carefully install the radar. The connector for the harness will go up. once the top part is inserted and locked in position push in the bottom until it clicks.

Bracket installed.jpg

Make sure the harness that runs along the bumper (which goes to the front lights and the park sensors) goes over the radar harness connector in the back. Otherwise the metal in the harness will affect the radar.

Harness over the radar connector.jpg

Now that we are done installing the radar it is time to run the Tinkla Radar Harness. First connect the harness to the radar. Make sure it is well secured. Will require a little force as it is a water-tight harness.

Second step is to attach the ground. The ground post is behind the radar in the frunk area, as shown in the image below. Take the nut out, insert the ground connector there, then tighten well the nut back.

Ground post location.jpg

Next we will connect the 12v to the fuse box on the right side of the frunk as you look at the car from the front. Remove fuse F75 from the fuse box. Plug this fuse into the remaining slot in the fuse tap that came with the harness and plug the fuse tap in the location from which you removed the fuse.

Power for the tinkla radar.jpg Fuse box F75.png

Now for the can wires, start from the frunk area and go under the fender to the door, then through the door seal inside the car. There was already a hole in the door seal there for me. Your miles may vary.

Radar harness from frunk.jpg Radar harness at door.jpg Radar harness in car.jpg

Now just connect the JST2.5 connector at the end of the radar harness inside the OBD-C adapter in the radar port Tinkla OBD-C Adapter Schematics.jpg.

With the harness ran from front to back, now it's time to tidy it up a little and secure it in few places with some zip ties. Then put the frunk back together.

In openpilot, setup the radar configuration (see below), follow the instructions to perform the VIN Learn, and then follow the process for the radar calibration. Once done you can put the nosecone back and you're done. 

When putting the nosecone back, please make sure the harness that goes to the park sensor does not get in front of the radar as you install the nosecone.

Modifying the configuration settings for radar

It is important now to take the time to configure the setting in Tesla Unity in order to activate the radar. Before moving to the next step, please turn ON the toggle for Use Tesla Radar and appropriately configure the Radar behind nosecone and Radar offset. When using the Tinkla Radar Bracket which mounts the radar upside down, also enable the toggle for Use Radar Upside Down

Programming your radar - VIN Learning

Chances are you bought your Tesla Bosch Radar on ebay and was previously installed and programmed in a car (so it will only respond if we send the right VIN, epas type and position). In order to make the radar work on your car you will have to go through the Radar VIN Learn process that can be started using the button with the same name at the bottom of the Tesla preAP settings page.

  1. Ensure your Radar is installed in your vehicle and connected to the Tinkla OBD-C Adapter or to your specific harness.
  2. Ensure that all the settings are configured correctly for your radar, especially enabling the radar and specifying if it is behind the nose cone or not.
  3. Using the Radar VIN Learn button under the Tesla preAP tab of settings start the programming process
  4. Before hitting the VIN Lrn button, ensure your car is on (in P - Park) and continue to keep your foot on the brake throughout the process.
  5. Hit the VIN Lrn button and the screen will show the progress. Your car might emit warnings and sounds during this process, which is normal.
  6. Once process is complete, allow the car to go in "CAR OFF" mode and reboot your Comma devkit.
  7. You are now ready to use your Tesla Bosch Radar.

Calibrating your radar

Determine the center of car

Most likely the radar will have to be calibrated in order to ensure the correct data being fed into OpenPilot. In order to calibrate your radar you will need:

  • the calibrateRadar.py script which for those running on one of my Tesla branches is located in /data/openpilot/selfdrive/car/tesla/radar_tools/
  • a 4ft (120 cm) metal pole that can stay vertically by itself (I personally use a microphone stand)
  • a 3.5mm hex head nut driver with a long neck that can fit through the front grille holes
  • tape measure
  • chalk
  • computer or phone to SSH into EON and view data

First, we need to create a straight line that is perfectly centered on the car (for this you will need another person to hold one end of the tape). Follow these steps:

  • start from the left front wheel well, measure 8 ft (2.5m) out towards the center of the car and draw an arch of the circle using the chalk.
  • repeat the process from the right front wheel
  • the place where your two arches intersect will be point A. (see blue lines in diagram)
  • repeat the process above but measure out 16.5 ft (5 m)
  • the place where your two new arches intersect will be point B (see red lines in diagram)
  • connect points A and B with a line; this line is now along the center of the car (see green line in diagram)

Now that we have the line that marks the zero dY line, let's start the calibration script:

  • start OP (OP might stop when you leave the car; what i did was to leave open the driver window, put a heavy backpack on the driver seat, connect the driver seatbelt and turn the car on; this way it ensured that OP remained running)
  • SSH into EON and go to the folder where the calibrateRadar.py is
    • cd /data/openpilot/selfdrive/car/tesla/radar_tools/
  • set the python environment
    • export PYTHONPATH="/data/openpilot/"
  • run the calibration script
    • python calibrateRadar.py

The script will start showing data for objects between 8 ft (2.5 m) and 15 ft (4.5 m) in front of the car.

Now the calibration process starts:

  • place the metal pole (again, i used a microphne stand) in the middle of the line that connects A and B
  • look at the terminal window running the calibration script and check x and y values for distance:
    • you should see data from the script showing dRel and dY as some of the points; keep in mind the values are always in meters
    • measure the distance between the radar and the pole: it should match the dRel distance
    • dY should be 0.0
  • if you can not see the pole at all or dRel is greater than the real measured distance, you will need to adjust the radar vertically until they match.
  • if dY is not zero, adjust the radar position Left or Right until dY is 0.0
  • once dY is 0.0 move the pole along the line connecting A and B repeating the above process
  • you are done when no matter where you place the pole between A and B, dY is always 0.0

Troubleshooting the Tesla Bosch Radar

The radar sends data for the first 5 seconds no matter what we send to it. But if we are sending the wrong info (VIN, position or epas) it will stop sending changes to the data after 5 seconds. At this point we have to see what exactly is happening with the radar by looking at the alerts it generates.

In order to do so you can run the script created to get the errors from the radar.

  • start OP
  • SSH into EON and go to the folder where the getRadarErrorCodes.py is
    • cd /data/openpilot/selfdrive/car/tesla/radar_tools/
  • set the python environment
    • export PYTHONPATH="/data/openpilot/"
  • run the calibration script
    • python getRadarErrorCodes.py

The script will start showing errors from the radar (if present) or say No Errors if everything works as expected.

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