Réponses à Uno avec un adaptateur 12 V et USB en même temps : cela va-t-il griller mon portable ?

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…

il y a 1 semaine et 6 jours

Réponses à Uno avec un adaptateur 12 V et USB en même temps : cela va-t-il griller mon portable ?

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…

il y a 1 semaine et 6 jours

Ouverts Uno avec un adaptateur 12 V et USB en même temps : cela va-t-il griller mon portable ?

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

il y a 2 semaines

Réponses à 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…

il y a 4 semaines

Ouverts 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…

il y a 1 mois

Réponses à 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?

il y a 1 mois et 2 semaines

Réponses à L'appel Python à l'endpoint des dernières valeurs bloque pendant deux minutes sur notre Pi

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

il y a 2 mois

Réponses à 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.

il y a 3 mois et 1 semaine