Resol data to 3.3V (adapter schematic)

Robert

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Feb 23, 2021, 7:26:14 PM2/23/21

to Resol Vbus

With the circuit below it is possible to reliably convert Resol's own data bus to 3.3V level required by a Wemos D1 Mini module.

Tried the circuit given in the other PI post but that didn't work for me, this one does.

Andrew White

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Feb 23, 2021, 8:02:02 PM2/23/21

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That sounds interesting, do you have more details on your project with the D1 ?

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pieter....@gmail.com

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Feb 24, 2021, 3:22:24 PM2/24/21

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interesting, do you have code for the wemos as well?

Op woensdag 24 februari 2021 om 01:26:14 UTC+1 schreef Robert:

Robert

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Aug 27, 2021, 9:45:39 AM8/27/21

to Resol Vbus

Sure! Documented here:

https://tasmota.github.io/docs/Smart-Meter-Interface/#resol-deltasol-bs-plus-vbus

pretty easy with Tasmota.

Robert Constantin

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Nov 18, 2021, 3:47:02 AM11/18/21

to Resol Vbus

Hi Robert, I don;t really understand this part on tasmota website:

"Do not connect the GND pin of Wemos with the ground of Resol unit as that may damage the output port of it. "

Do you have a pic with your installation? Thanks!

Robert

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Dec 21, 2021, 1:49:15 PM12/21/21

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Look at the schematic below:

You see that the GND of Wemos is connected to VBus port of Deltasol pin 9.

GND of Deltasol is pins 12, 13, 14 - do NOT connect GND of Wemos to any of these. Just negative pin of VBus port on the device (if your Resol device is different, check the manual of it, what are the pin numbers there.

Robert Constantin

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Dec 21, 2021, 2:23:51 PM12/21/21

to Resol Vbus

oh, I got it now! thank you very much

Jirka Jirutka

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Jan 26, 2022, 4:21:51 PM1/26/22

to Resol Vbus

Hi, I have the same problem. Today, I made this adapter, but not working.

On the table, without wemos and resol, I try connect LED between adapter circuit output ( normaly wemos rx ) and gnd, and to ciruit input I try connect a 8V source, LED working. I am not uderstand, why with wemos and resol not working...

Dne úterý 21. prosince 2021 v 20:23:51 UTC+1 uživatel robert...@gmail.com napsal:

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