Search found 2 matches
- Sun May 02, 2021 4:06 am
- Forum: Hardware
- Topic: RTC of ESP32-WROOM-32E
- Replies: 1
- Views: 2924
RTC of ESP32-WROOM-32E
I would like to understand is it a way to power internal RTC from the battery (e.g. CR2032) on the new ESP32-WROOM-32E, to guarantee that internal RTC will work if 220V power is down? It's a pity that we must use an additional RTC chip and external crystal clock while ESP32-WROOM-32E already has the...
- Thu Feb 21, 2019 1:04 pm
- Forum: ESP32 Arduino
- Topic: ESP32 RS485driver hardwareserial ModbusMaster
- Replies: 23
- Views: 49624
Re: ESP32 RS485driver hardwareserial ModbusMaster
Hi, colleagues,
I made a review on how to use MAX3485 based board with HardwareSerial on the ESP32. Here it is http://www.bizkit.ru/en/2019/02/11/12251/
RS485 board base on MAX485 works perfect with the ESP32.
I made a review on how to use MAX3485 based board with HardwareSerial on the ESP32. Here it is http://www.bizkit.ru/en/2019/02/11/12251/
RS485 board base on MAX485 works perfect with the ESP32.