OpenMarine

Hello,

I am a newbie, trying to assemble the Pypilot myself, following Andreas's plan (https://github.com/AndreasW29/pypilot-ti...tion-infos).

I am wondering if 1/4W is enough for the resistors on the Pypilot board (ranging from 430 Ω to 120 kΩ). It is not specified in his documentation of the parts. Many thanks!

1/8 Watt for most of them, except for the current sense (R20) and the arduino power one (R1), that should be a bit more.
See this link for the pertaining schematic, and this link for the earlier discussion.

You can take the voltage (in this case 5v or 3v3) and use the formula: V^2/R to determine wattage.

Generally these resistors see less than the full 5 volts, but you can see a 100 ohm resistor at 5 volts dissipates 1/4th watt. I then try to at least double this, so the 100 ohm resistor might be 1/2 watt, but it would only see this if the output of the regulator is shorted.

So basically every resistor at be 1/8th or 1/10th watt, except the current sensor or arduino power. My newer designs dont use the arduino power resistor but instead regulate current to limit it in case of a short.