I have a 1950 split window beetle and want to implement an Arduino Nano.
Its electric environment comes with a 6v generator incl. a mechanical 6v regulator which results in a voltage of 6.2 up to 7.2 depending on the load and the rpm. And shure I guess there are lot of noise and maybe spikes in the signal, so this I have to take into account when feeding the Arduino with the car's voltage.
As the drop from 6-7v to the Arduinos 5v is quite low I thought about two approaches:
- A small voltage DC booster device which comes with all needed Arduino voltage safe components on board. The booster would increase the voltage from the cars 6-7v to i.E. 10v which can be directly provided to the Arduinos VIN.
- A classic voltage clamp approach using a zener diode and a resistor in front.
Now ... as here also the voltage spikes and noise of the vehicle have to be taken into account ... can this approach be optimized by using capacitors behind and in front of the zener diode?
See the idea below.
If this 2nd approach would be a good choice to go with, can this also be 1:1 used in a 12v car electric environment?
Thanks a lot for your input in advance