New answers tagged relay
0
votes
Pin 13 fires relay when powering on... How to disable?
A little bit late, but due to the fact that pin 13 has a on-board led it is basically pulled up.
Workarounds:
Remove led physically.
Remove the 330ohm resistor connected to led
OR both.
Top 50 recent answers are included
Related Tags
relay × 306arduino-uno × 88
esp8266 × 39
arduino-mega × 23
nodemcu × 22
power × 21
switch × 16
sensors × 15
motor × 14
transistor × 13
programming × 11
pins × 11
arduino-ide × 10
arduino-nano × 9
bluetooth × 8
timers × 8
voltage-level × 8
home-automation × 8
led × 7
button × 7
electronics × 7
wires × 7
esp32 × 6
temperature-sensor × 6
millis × 6