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Started by justinbowser, April 16, 2020, 12:32:42 PM
Quote from: justinbowser on May 13, 2020, 11:36:36 AMOK, I'm trying to wrap my head around this and am a little confused. I take it I need to order a ESP-WROOM-32 ESP32-S Development Board and an RS232 board. Will the following work?Serial module - https://smile.amazon.com/Anmbest-Converter-Connector-Raspberry-Microcontrollers/dp/B081T8P395ESP32 Dev Module - https://smile.amazon.com/dp/B0718T232ZIs there no Arduino board needed as a controller?
Quote from: justinbowser on May 13, 2020, 08:07:11 PMLarry,Thanks. I have ordered the ESP32, Serial module, RJ11 cable, DB9, and some jumpers. Should be here in about a week.Justin B.
Quote from: Graham on May 16, 2020, 08:10:41 AMThe wiki documentation at https://github.com/ClassicDIY/ModbusAdapter/wiki can be edited by any github user, please feel free to add more detail as you see fit...I found that some RS232 interface modules label the tx & rx inconsistently. Some have tx to represent pin 2 (tx) of the db9 connector and some label it as rx since it receives data from the ESP device. Very confusing!If you use the one from Canakit as described on the github page, then GPIO16(RX) goes to RX of the adapter and GPIO17(TX) goes to TX.Graham.