Old itead PSB-B04-GL board, pin layout anyone?

[Tjareson]

I just found this old board from itead - does anyone know, which pin to set low, in order to enter flash mode for tasmota? I can't even find a layout of the soldered ESP-module they are using there. I only find a PSF version, which is not the same. :-( 

[Philip Knowles]

Blakadder’s site is always a good place to start

 

eWeLink PSF-B04 5V 7-32V 4 Channel Relay Board Configuration for Tasmota (blakadder.com)

 

Yours obviously has the RF module attached too

 

Sent from Mail for Windows

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[Tjareson]

As mentioned, also your link is only the PSF version. The module on my board is PSB… different layout more pins.

[Philip Knowles]

PSB Smart Switch Module - ITEAD Wiki (iteadstudio.com)

 

Sent from Mail for Windows

 

From: Tjareson
Sent: 07 November 2022 22:43
To: TasmotaUsers
Subject: Re: Old itead PSB-B04-GL board, pin layout anyone?

 

As mentioned, also your link is only the PSF version. The module on my board is PSB… different layout more pins.

knowles...@gmail.com schrieb am Montag, 7. November 2022 um 22:46:21 UTC+1:

Blakadder’s site is always a good place to start

 

eWeLink PSF-B04 5V 7-32V 4 Channel Relay Board Configuration for Tasmota (blakadder.com)

 

Yours obviously has the RF module attached too

 

Sent from Mail for Windows

 

From: Tjareson
Sent: 07 November 2022 21:20
To: TasmotaUsers
Subject: Old itead PSB-B04-GL board, pin layout anyone?

 

I just found this old board from itead - does anyone know, which pin to set low, in order to enter flash mode for tasmota? I can't even find a layout of the soldered ESP-module they are using there. I only find a PSF version, which is not the same. :-( 

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[Tjareson]

Ah, thanks. I saw the schematic picture somewhere else as well, but somehow didn't find the wiki page itself - probably searching for "PSB-B04" was a bit too specific. 

Unfortunately they also do not say anything about the GPIOs there. (which is probably the reason why I have a hard time to find anything about flashing it with Tasmota).

Also on the wiki page there are 4 "Key Inputs" mentioned, but the board has 5 buttons, where the 5th one is changing the behaviour of the relays significantly, so I guess it makes some input to the ESP-chip, even if the wiki schematics are not showing any further input option for that.

[Wade Weppler]

https://community.home-assistant.io/t/hacking-the-psf-b04-esp8285-4-channel-relay-board-and-with-tasmota-and-unable-to-drive-all-4-relays-concurrently/155919

To view this discussion on the web, visit https://groups.google.com/d/msgid/sonoffusers/5c876cb8-dbbe-40f6-97f9-f214db76ed3en%40googlegroups.com.

[Tjareson Toland]

That one I saw - but as mentioned this is a different ESP module, it's PSF-... instead of PSB-.... It is also a different board.

Am 08.11.22 um 15:12 schrieb Wade Weppler: