Customer:
I have an Arduino ESP8266 and need to know which pins I can use for analog read. I want to read values from a potentiometer, but when I connect it to the ADC pin and use pin A0 in the code, I don’t get any reading.
Original message (Croatian)
Pozdrav, imam arduino esp8266 koji od pinova mogu koristit za analog read, htio bi iščtati vrijednosti na potentiometru no kada ga ukopčam u pin ADC i u kodu upisem pin A0 ne dobijem nikakvo iščitanje.
Hvlala!
Originally submitted via email support on 27 March 2022. Migrated to the forum for community visibility.
Soldered Support:
The ADC pin on ESP8266 can accept voltage up to 1V, so you need to be careful with this pin. Some development boards have a voltage divider that allows higher voltage on this pin, but it depends on the board. Can you specify which board you are using, as it’s difficult to diagnose without that information? Everything should work when connected to the ADC pin and when reading A0 in the code. Here is a useful reference: ESP8266 ADC - Read Analog Values with Arduino IDE, MicroPython and Lua | Random Nerd Tutorials where you can see how to use the analog pin.
Original message (Croatian)
ADC pin na ESP8266 može primiti napon do 1V tako da treba biti oprezan s tim pinom. Neke razvojne pločice imaju djelilo napona s kojim omogućavaju da napon na tom pinu bude i veći, ali to ovisi o pločici. Možete li poslati o kojoj pločici se točno radi jer ovako je teško nagađati što ona sve ima. Iako sve bi trebalo raditi kada se spoji na ADC pin i kada se čita A0 u kodu. Šaljem Vam i jedan koristan link ( ESP8266 ADC - Read Analog Values with Arduino IDE, MicroPython and Lua | Random Nerd Tutorials ) u kojemu možete vidjeti kako se koristi analogni pin.