Playing with CAN bus and Arduino Part 2, custom pcbs arrived!
ฝัง
- เผยแพร่เมื่อ 25 ต.ค. 2024
- This time i show you the custom PCB i designed and ordered at pcbway.com
These can be used to replace the stock CAN Bus box from multiple Android Car Radio's
You can get the PCB and Source Code here:
Order your own PCB of this Design simply here: www.pcbway.com...
github.com/atc...
Watch Part 1 here, this gives additional information to why i am doing this:
• Sniffing any CAN-bus o...
Thanks to pcbway.com for sponsoring this video!
Unterstützt durch Produktplazierungen
Wow excellent video. I’m interested in learning CAN because of how all the new cars use it to control everything. Thanks for sharing Artie 👍
Great video, once again using the Arduino to do real world stuff.
Thanks for sharing.
Oh and well done for making a complicated video so well in English when it is not your first language. I sometimes struggle making videos and it is my first language. 😋
I really appreciate you making this video! And also a big thank you for the power saving tip on the transceiver.
InstaBlaster...
Aaron, du bist ein Held!
Vielen Dank für die klare Erklärung und die Weitergabe Ihrer Informationen, ich werde sie auf jeden Fall auch nutzen.
Grüße ARK aus den Niederlanden
Hi, i just stumbled over your CAN experiments. I was wondering: would you have the code for that atmega328p experiment posted somewhere? I'd love to experiment with that a bit myself!
The thumbs up is well earned. Keep up this great work, I'm eager to see the new PCB coming in, even if comes from China.
Take a look at part two, the pcb did arrive already :)
Sorry to insist... Why not support the European (German) economy? E.g. aisler.net
Good question, for once the price is different and many parts that are available in china are not available in germany so i need to order from china anyway
@@atc1441 I know I know... I'm suffering from my own decision. But I had to say it ;-)
U can also use an L5973D with an TJA1043. The TJA1043 can shut down the LDO with its inhibit output pin when there are no can messages available on the bus.
Nice to know, thank you for the tip.
A lot of newer cars now come without physical buttons to do simple things like turn on and off Autostart feature; or even in some cases, such as the new VW Amarok Life ute, you cannot even access simple Air conditioning controls without digging through the screen menus. I am hoping the techniques you show here will enable me to create a set of physical buttons and knobs to change these settings easily. Thanks for the great Video, you have started me down a rabbit hole now I think..
Just be careful not to use cables like elm327 or vag-com(or atleast do research about them) for prototyping, cause on some modern Golfs messing up with CAN bus might trip persistent tach error(you won't be able to see it on dashboard), car will think you spon your engine at 7200rpms and unfortunately void your warranty.
@atc1441 ,
Do you have a full Bill of Materials somewhere? The printed PCB that combines an ESP32+MCP2515 uses some Linear Voltage Regulars and & other parts I can't just steal from the 2515. Also, is this dependent on also having built your part one? And does that have a BOM? Thanks mate.
great project but why are you using a dedicated CAN controller and not using the CAN pins of the STM32?
Thats a good argument, the reason is that i wanted to make it as compatible as possible between different controllers.
I like the standalone CAN controller demo. It can be added into any existing system that has an SPI bus. Why not update to the MCP2518FD though?
The MCP2515 is widely available thats why it was used
HI, Can you post the code for the car emulator with the 3 buttons ???
I have a VW Radio i would like to turn on
Thank You
Thank you for sharing your insights!
Where is part 3, with the new pcb and Arduino chip? I would like to see how small you got the pcb.
Great video. Have any interest in looking into LIN? I ask as there are absolutely no videos about sniffing it it and you are great at explaining the systems in your videos.
Thanks for the great video. I am working on a similar project for my car. What is the CANBus adapter sending to the Android head unit via the TX/RX lines? What is the protocol being used, or how can I sniff the data coming across on those lines?
Great job!
Good job. Please, advise about your experience on 3.3V STM32 pairing with CAN bus transceiver. The car CAN bus voltage level is 0/5V, while the transceiver works as the bluepill, 3.3V accordingly. In other words, is the CAN bus chip 5 Volts tolerant, while connected to 3.3Vcc?
Hi! i want to change my headlights on my mercedes sprinter van from halogen to LED. halogen has analog 12v power wires for all bulbs ,but led headlights has can bus controllers. is it possible to use arduino to send "signals" to led controllers to control lights?
Great video, thanks for sharing. Can you do a video for steering wheel unlock function using CAN?
Great video, thanks.
Love what you've done here and the way you continued to improve your design. Is the code still available as I'm keen to get some of your PCBs and experiment with some Australian vehicles?
Hey the code should be there :)
Hi, it is impressive work done here.
I was wondering if you could suggest similar converter box for nonandroid multimedia unit i order to control it from the steering wheel buttons.
Hello! do you have any idea why after a few seconds he stops reading the messages? to read the messages I have to reconnect and after a while it stops again.
Hi, This is a great tutorial. So basically, We just need to make the output 12 volts to from arduino nano for reverse wire when car can bus is sending a reverse signal? or will it have to be a lower voltage to be sent up the reverse wire and illumination wire?
Coz I see you do digitalWrite(PA5, true); which means turn on PA5 with voltage right?
Excellent video , thanks
Electrick charger testing purposes how on without bms battery??
How make can signal for charger.
Hi Aaron, this is brilliant. Im thinking of builting my own dashcamera with 2 (or 4) channels and would like to overlay some data from the can bus to the captured video. you know, to show if turn light was used, if the brakes was applied. did I use the horn so on and so on. speed of the car compared to gps speed - the list is long :-D
But im not sure if I have the skills, but this video (and your other about can bus) seems like something I have to look into.
Thank you :)
Good luck so far
I like you videos my next topic also will be can bus so you give me great direction about it. Thank you
Thank you. Wish you luck with your project
This could save ppl money. In Canada they make you pay a lot to buy the Canbus modules
hi. how can you menage the problem with radio safe code? and mybe do you know in which module car keep information about radio that it is no need to put radio code each time the battery is out of the car?
Great video and I'm looking forward to get data from my car. My first goal is to read if door are locked or not. So most probably tracking locking and opening messages. If device is sleeping does it get first messages correctly or are some messages missed?
When the car is sleeping no messages will occour. Only after unlocking new data will be send. This can of course be different for many cars :)
@@atc1441 Thanks. Just wondering what happens at the moment when doors are unlocked. But truly it depends by car and I have to just test and see.
Hi Aaron, thank you for your Movie, I am looking for a program for this can with three buttons (Light etc.) where can I get it. Thank you
Did you get the program?
Great work so far. What about the smaller finished version? Did you work on it the last year?
My Android Radio has a 2 wire Connection from the original CANBox Decoder. Do you have an idea what this is? Perhaps the RX/Tx from UART without VCC and GND?
(Kannst auch in Deutsch antworten :-) )
Hey, did not worked further so far, dont have a car with multimedia CAN anymore.
Hei, wirklich schade dass du das Projekt nicht weiter verfolgt hast. Wäre es möglich das neue, kleine PCB Design zu bekommen? Ich habe gerade genau das gleiche Projekt :) Super Video übrigens!
I’m getting a degree in electronic engineering and I want to reach your level, what did you also study to know all this stuff?
Hi, much appreciated! Many Thanks for Your work! BTW, are you selling one of your boards assembled? As I am looking for a CAN Sniffing setup which will work „out of the box“ without losing much time. Thanks in advance!
Hey. Sorry but not selling it
@@atc1441 Thanks for sharing anyway! Good luck with your projects
I use the blue pill for another project. I'm wondering why you chose the blue pill for your project as opposed to other options.
Hey. It was about low power and also my very favorite soc at that time plus very cheap.
Now i may would use something different
Thank You for very interesting video! Have You allready built the fully integrated version with a single pcb ?
Hey. Yes i did finished it but never made a video about it, hope i will do it in the future, to many other projects :D
@@atc1441
hello
thanks for sharing your work. Please find sometime to share the finished project. Can't wait to see it
@@atc1441
one year has gone since that answer. Did you already made it? Can't wait ot see it too.
Would be really cool to see the process of designing the PCB / schematic also :)
I Love your Video!
Can please explain a more about the power saving function?
I did understand that you, wait a certain time (not receive can messages) until you put the controller into deep sleep,
but how do you receive the 1st can messages to turn the controller back on ?
Thank you again for the video!
Würde mich voll über ne Antwort freuen, Grüße aus München
Moin. The CAN transceiver features an interrupt function to wake up the controller
HI, Can you post the code for the car emulator with the 3 buttons ???
Thanks
Excellent work! I'm looking an affordable module to switch the ignition singnal in my 1T1 Touran to use my 1 din headunit long time ago. Maybe Your circuit is the solution! ;)
Will there be a part 3 of the "CAN-Bus-Saga"?
Hey. I did receive the last pcb a while ago but never did the video for it.
Maybe there will be some in the future but cant say when :)
@@atc1441 Sehr gut aufgebaute Videos! Vielen Dank. Ich würde hier auch gerne ein "Votum" für den 3. Teil der Serie abgeben :-) Und bin natürlich auch an einem PCB-Link zum neuen Design interessiert ;-)
Thanks for all Grate Projects sharing with us i hope you can show us how to receive data form ECU with STM32 pin 8 and pin 9 without CAN MCP2515 using STM32f103C board have CAN LOW CAN HIGH
I never used that myself. And i wanted to have it as universall as possible so i used the MCP2515
Nice project! Did you tried to when the can send a "X" message, you send a "Y" message? If yes, how can I do this? Regards
That is possible. On receiving just check for if the data is the one you are interested in and then send back whatever message you want
Could you not clock the mcp2515 from the stm32 to save a part if you don't want to use the internal can controller?
This would still not be very versatile and needs precise timing if i am right
Bravo...........osycilscope..............cheers
Can you publish source code and schematic on your git repo?
I added a Repo for it :)
github.com/atc1441/CustomCanDecoderBox
its not commented and not cleaned but you asked for it :D
Your pcb and Source code link is missing
Hey. It is in the description
Hi. Can you reproduce signal from peddle shifter on steering wheel? ( from 2 analog buttons for example to shift gear on automatic gearbox)
Thanks
@Aaron Christophel
Hey, that is not simple to answer, in theory it should work
@@atc1441 if you want to test it let me know. (Not for free)
I ask you because you are my chance to make my paddle shifters work without steering wheel (dsg transmission swapped in my old golf2) 😇
Where are you from
@@atc1441 Germany 🇩🇪
Thank you for those explanations!
I will try to use your stuff to interface a Pioneer W/R (Wired remote) with the Steering wheel control from my VW. Would be great if I could do it since the Pioneer W/R work in a strange way setting resistors values for each function like Vol+/Vol- etc... I will come back here to do a feedback if it interested anyone.
Since I'm actually working on my program, I could share with you this function:
const int baudrates[] = {10, 20, 50, 100, 125, 250, 500, 1000};
// Initialisation du bus CAN
MCP2515.begin();
// Recherche automatique du baudrate
for (int i = 0; i < 8; i++)
{
if (MCP2515.setBitrate(baudrates[i]) == MCP2515_OK)
{
// Baudrate configuré avec succès
Serial.print("Baudrate du bus CAN : ");
Serial.println(MCP2515.getBitrate());
break;
}
}
This function is able to find the actual baudrate of you canbus in case you don't know the baudrate of it and return the value onto the serial port.
@@legeek7171 Did you make any progress?
Hi, how do you manage to send data's to Android unit? I scammed with a seller which said unit %100 for your car but apparently it is not. I wanna pull things with arduino or raspberry and push them to Android unit but I don't know how I can.
You need to send data via uart with the correct protocol. You can sniff it from the unit you have
Nice, can you share the code for the car simulator -maybe on git
#include #include void sendCAN(uint32_t id, uint8_t length, uint8_t data0 = 0x00, uint8_t data1 = 0x00, uint8_t data2 = 0x00, uint8_t data3 = 0x00, uint8_t data4 = 0x00, uint8_t data5 = 0x00, uint8_t data6 = 0x00, uint8_t data7 = 0x00); MCP2515 mcp2515(6); struct can_frame canMsg; void setup() { while (!Serial); Serial.begin(115200); SPI.begin(); delay(2000); Serial.println("Reset: " + String(mcp2515.reset())); Serial.println("SetBitrate: " + String(mcp2515.setBitrate(CAN_100KBPS, MCP_8MHZ))); Serial.println("SetMode: " + String(mcp2515.setNormalMode())); Serial.println("Example: Write to CAN"); } uint8_t ddd; void loop() { if (mcp2515.readMessage(&canMsg) == MCP2515::ERROR_OK) { // if(canMsg.can_id == 0x271){ Serial.print(canMsg.can_id, HEX); // print ID Serial.print(" "); Serial.print(canMsg.can_dlc, HEX); // print DLC Serial.print(" "); for (int i = 0; i < canMsg.can_dlc; i++) { // print the data Serial.print(canMsg.data[i], HEX); Serial.print(" "); } Serial.println(); }//} sendCAN(0x351, 7, 0x02, 0x01, 0x00, 0x02, 0x00, 0x7E, 0x7E);//rückwertsgang, first byte 0x02 delay(10); sendCAN(0x271, 2, 0x01, 0x80);//Schlüssel aktiv delay(10); sendCAN(0x635, 3, 0x00, 0xFF, 0x00); delay(10); sendCAN(0x571, 2, ddd++, 0x00); delay(10); /* sendCAN(0x371, 2, ddd, 0x80); delay(500); sendCAN(0x371, 2, 0x00, 0x80); delay(500);*/ } void sendCAN(uint32_t id, uint8_t length, uint8_t data0 , uint8_t data1 , uint8_t data2 , uint8_t data3 , uint8_t data4 , uint8_t data5 , uint8_t data6 , uint8_t data7) { Serial.println("Send: "+String(id)); struct can_frame canMsg1; canMsg1.can_id = id; canMsg1.can_dlc = length; canMsg1.data[0] = data0; canMsg1.data[1] = data1; canMsg1.data[2] = data2; canMsg1.data[3] = data3; canMsg1.data[4] = data4; canMsg1.data[5] = data5; canMsg1.data[6] = data6; canMsg1.data[7] = data7; mcp2515.sendMessage(MCP2515::TXB1, &canMsg1); }
Hope this works :)
Does it work with Sony Car Radios aswell?
I dont know sorry
PLEASE! Share Your .ino sketch.
Thank You.
Did you get his ino sketch?
so now I know why my Fiat 500 eats batteries every 2 years(its a 2007 with no standby/sleep mode.