Hey Guys, i was really upset, i was trying every thing here and can't make my project run
i was using this scheme, and assembled on my protoboard like this, Diode → between 12V and pin 7 (cathode/banded side to pin 7).
• Capacitor → between pin 7 and GND.
• Resistor → between pin 7 and pin 6.
pls help me is for final test conclusion on college i from Brazil
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Is the microcontroller you are using an ESP32 or an Arduino?
I tried with both, but now with ESP, I have all tensions look like my chip is good but, nothing show up I think it’s the assemble of circuit problem, I don’t know, but now I am using an ESPC3 SupeMini
I have worked with both the ESP32-S3 and the Arduino R3, and both of them work. However, if you use the ESP32, you need to add a logic level shifter, because the ESP’s logic signal is 3.3V while the L9637D requires 5V.
Ok, I will try with my arduino instead, if I take a picture of my protoboard and put a subtitle above you can see for me it’s everything ok ?
And this is for my E36
yes, mine is correct, the side is right, PIN 1Connected to D8, PIN 2 Nothinh, PIN3 5v (Arduino now), PIN4 Connected to D9, Pin 5 Connected to ground of arduino and car, Diode → between 12V and pin 7 (cathode/banded side to pin 7).
• Capacitor → between pin 7 and GND.
• Resistor → between pin 7 and pin 6.,
and PIN 8 nothing, i am using the right cap and resistor right ?
Did you check if the K-Line system on the car is still working properly with a diagnostic tool?
Yes, work with K-Dcable in rom raider, the cap I used is the right one ?
Please check the wiring connections between the components to make sure everything is working properly. If there’s still an issue, it might be that the code hasn’t successfully woken up the DME.
Enviando: IMG_5493.jpeg…
Which cap you are using? I bought the ceramic cap, and sorry to ask you that but do have an example sketch just to i see if the ECU wake ? And a library ?
i've tried to use this sketch
GetLiveData.ino (1,8,KB)
but i got this message
Ok, and you wake your ECU on you code right ? i will try here, beacuse the wiring is really fine
That's right, I wrote the code myself. After waking up the DME, the next step is to write a subroutine to find the sensor PIDs if you want to read the engine parameters.
do you have any advise, how do I wake my DME ?