Sonoff Basic R4

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Ulf Holt

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Aug 19, 2025, 3:12:07 AMAug 19
to TasmotaUsers
I have a few SonOff Basic R4, which are using ESP32C. I need to be able to switch the relay on and off using tasmota. What is the best way to do this?

Best regards

Ulf H

Andrew Russell

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Aug 19, 2025, 5:05:10 AMAug 19
to Ulf Holt, TasmotaUsers


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Philip Knowles

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Aug 19, 2025, 5:17:17 AMAug 19
to Ulf Holt, TasmotaUsers
You'll need to flash using a USB to serial converter (using the USB to power the device - do NOT connect to mains while connected to the computer)
Configure your smart switch module to work with Tasmota open source firmware.
From: sonof...@googlegroups.com <sonof...@googlegroups.com> on behalf of Ulf Holt <ulf....@gmail.com>
Sent: 19 August 2025 08:12
To: TasmotaUsers <sonof...@googlegroups.com>
Subject: Sonoff Basic R4
 
I have a few SonOff Basic R4, which are using ESP32C. I need to be able to switch the relay on and off using tasmota. What is the best way to do this?

Best regards

Ulf H

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Ulf Holt

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Aug 19, 2025, 11:27:35 AMAug 19
to Philip Knowles, TasmotaUsers
Have installed Tamara for ESP32C3 and set up WiFi but how do I configure the module to switch the relay off and on
Sendt fra min iPhone

19. aug. 2025 kl. 11:17 skrev Philip Knowles <knowles...@gmail.com>:



ulf....@gmail.com

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Aug 19, 2025, 11:27:36 AMAug 19
to Philip Knowles, TasmotaUsers

I found it! Setting up GPIO4 as relay, fixed the problem!

 

Ulf

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