Respondidos Uno con un adaptador de 12 V y USB a la vez: ¿me va a freír el portátil?

It was the diode. Put a 1N4007 on the valve and moved the relay to its own 5 V supply. The COM port hasn't…

hace 1 semana, 6 días

Respondidos Uno con un adaptador de 12 V y USB a la vez: ¿me va a freír el portátil?

Relay module VCC is on the Uno's 5V pin. Valve is 12 V through the relay contact, from the same adapter. Everything shares one…

hace 1 semana, 6 días

Iniciados Uno con un adaptador de 12 V y USB a la vez: ¿me va a freír el portátil?

hi, first year student, so sorry if this is obvious. I have an Uno reading a capacitive soil moisture sensor on A0 and switching…

hace 2 semanas

Respondidos Eight meters on 30 m of RS-485 at 9600 baud: do I need termination, or is it something else?

Added 680 ohm bias at the Pi end and swapped to a proper twisted pair with a ground wire. 24 hours without a single…

hace 4 semanas

Iniciados Eight meters on 30 m of RS-485 at 9600 baud: do I need termination, or is it something else?

Student here, first time with RS-485, so sorry for basic questions.Our lab has eight small Modbus RTU energy meters on one RS-485 line, about…

hace 1 mes

Respondidos Switching Wi-Fi bulbs from a board Switch through my Pi, no vendor app

Why does it have to be a catalog command, couldn't the board send anything?

hace 1 mes, 2 semanas

Respondidos La llamada en Python al endpoint de últimos valores se cuelga dos minutos en nuestra Pi

Could it be the API key's IP allowlist blocking you sometimes?

hace 2 meses

Respondidos HC-05 vs HC-06 vs HM-10 for an Uno that has to reach a Pi gateway six metres away

Following, I have exactly the same confusion.

hace 3 meses, 1 semana