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1 vote

DC motor stalling resets Arduino - A good thing?

If the motor draws too much current (which is at a maximum when the motor starts up, or stalls), then the power supply will be heavily loaded, and you'll see its voltage drop. That's likely to be a ...
Simon Fitch's user avatar
  • 38.3k
1 vote

Esp32 controls a 12v coil relay through PC817 and 2N7000

Looks okay, except D2 is backwards. It would be better graphically to show it in parallel with D1, the downward arrow for a positive voltage is against convention. I think I'd like to see a bit more ...
Spehro Pefhany's user avatar
1 vote

Buffering Arduino SPI bus using 74AHCT125

5V, because that chip works only on 5V and outputs 5V. It would be a great chip for level shifting 3.3 to 5V, but will not work for level shifting 5V to 3.3V. No it would burn up the 3.3V device if ...
Justme's user avatar
  • 158k
1 vote

Will such a scheme work correctly with ATmega328PB?

The accepted answer provides general suggestions on styling and common norms on PCB design but never point out the mistakes on the schematic. I see at least two mistakes. CC1 and CC2 on Type C USB ...
hcheung's user avatar
  • 301

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