Search found 4 matches
- Thu Aug 22, 2024 10:56 pm
- Forum: Hardware
- Topic: Can't get I2C LCD to work on ESP32-wroom
- Replies: 4
- Views: 1018
Re: Can't get I2C LCD to work on ESP32-wroom
scanner reports x27
- Thu Aug 22, 2024 4:43 pm
- Forum: Hardware
- Topic: Can't get I2C LCD to work on ESP32-wroom
- Replies: 4
- Views: 1018
Re: Can't get I2C LCD to work on ESP32-wroom
I removed the pullup resistors from one of my displays that pull SDA/SCL lines high to 5 volts.
Without them, the ESP32 is supposed to use teh internal pullups to 3.3 volts.
Doesn't work.
Without them, the ESP32 is supposed to use teh internal pullups to 3.3 volts.
Doesn't work.
- Thu Aug 22, 2024 4:40 pm
- Forum: Hardware
- Topic: Can't get I2C LCD to work on ESP32-wroom
- Replies: 4
- Views: 1018
Re: Can't get I2C LCD to work on ESP32-wroom
Yes, lcd at address 27.
- Wed Aug 21, 2024 11:48 pm
- Forum: Hardware
- Topic: Can't get I2C LCD to work on ESP32-wroom
- Replies: 4
- Views: 1018
Can't get I2C LCD to work on ESP32-wroom
I'm embarrassed to say I can't get an I2C LCD to work on my ESP32 module. I tired 3 different LCDs that work with UNOs, and NANOs (tested) I tried 2 different ESP32Wroom modules, thinking the first one that I never used may be "bad" I have tried using the LCD in the eventual program and when that di...