Hello forum. i have the following problem .
On my car, i am building a network of can-bus connected arduinos. (the car does not have any can bus on its own) 3 of them atm. when the car is running normally, everything works as expected. but i have the following problem. when a load dump happens (etc when i turn on the lights (HID) , or use the power windows) the arduinos usually hang..
the two arduinos i am using are wired as follows:
1) This one can either be connected to the car directly to the 12v (and use the onboard regulator), or not be connected at all (powered via usb connection to a tablet). it also is wired in the cars can bus. on both cases, when a load dump happens, it hangs..
2) the other ones power supply is shown bellow:
input capacitor is ~2000μF . there is also one , next to the arduino , ~100μF
DC-DC converter is a 12v to 5v step down.
https://grobotronics.com/step-down-dc-dc-converter-5v-3a-usb.html
this one crashes SOME times when i use the power windows, and always when i switch on the headlights. it also crashes even if i disconnected the can bus signal wires...
Any ideas that could help?? thanks !
On my car, i am building a network of can-bus connected arduinos. (the car does not have any can bus on its own) 3 of them atm. when the car is running normally, everything works as expected. but i have the following problem. when a load dump happens (etc when i turn on the lights (HID) , or use the power windows) the arduinos usually hang..
the two arduinos i am using are wired as follows:
1) This one can either be connected to the car directly to the 12v (and use the onboard regulator), or not be connected at all (powered via usb connection to a tablet). it also is wired in the cars can bus. on both cases, when a load dump happens, it hangs..
2) the other ones power supply is shown bellow:
input capacitor is ~2000μF . there is also one , next to the arduino , ~100μF
DC-DC converter is a 12v to 5v step down.
https://grobotronics.com/step-down-dc-dc-converter-5v-3a-usb.html
this one crashes SOME times when i use the power windows, and always when i switch on the headlights. it also crashes even if i disconnected the can bus signal wires...
Any ideas that could help?? thanks !