SmartSerial on cheap ESP32-8ch-Relais Card

25 Nov 2025 05:47 - 25 Nov 2025 05:57 #339183 by meister

SmartSerial on cheap ESP32-8ch-Relais Card was created by meister

Hi,
i modified the mesa-smartserial-device-template a little bit
and put it on a cheap ESP32 8ch-Relay board for extra Outputs.

i used platformio as buildsystem for easy use, i have also test the code on raspberry-pico,

github.com/multigcs/SmartSerial-ESP32RelayX8Board/tree/main

www.youtube.com/shorts/6ZKBH5xW8OQ

Relay-Board: www.amazon.de/dp/B0FNRH8QSN

Optional: www.amazon.de/TECNOIOT-Two-Way-Transfer-...tional/dp/B081J5R35N

Works fine with 7i92, but have still problems with 7c81 SmartSerial connector, not shure why,
maybe my pinout is wrong or problems with the TX_en stuff.

my Board with RS422 mod:

Last edit: 25 Nov 2025 05:57 by meister.

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25 Nov 2025 16:52 #339214 by meister

Replied by meister on topic SmartSerial on cheap ESP32-8ch-Relais Card

ok, works also on the 7c81 ports

The following user(s) said Thank You: tommylight

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25 Nov 2025 21:29 #339221 by tommylight

Replied by tommylight on topic SmartSerial on cheap ESP32-8ch-Relais Card

Small soldered board, is it the RS422 to RS232 converter, or just a line driver?
Nice work, i do like the ESP32 due to it's versatility.
Thank you.

The following user(s) said Thank You: meister

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25 Nov 2025 22:10 - 25 Nov 2025 22:12 #339223 by meister

Replied by meister on topic SmartSerial on cheap ESP32-8ch-Relais Card

the small one is an RS422 to TTL

little update:

youtube.com/shorts/vfd948wLu4w

Last edit: 25 Nov 2025 22:12 by meister.

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