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@berkseo Good question. The code seemed good at the time I wrote it, but I can't say that it was extensively tested. I may circle back to it at a future date, and if so, I'll take a closer look. Even with more than 500 downloads of the code, no one has posted any feedback on how well (or not) it has run. Also, I not sure how compatible the posted code is with newer releases of the mysensors library.

@Tommas Hi, now I've posted a device for sale on Tindie, if it's still relevant for you https://www.tindie.com/products/avikmen/usb-rf-gateway-with-stm32-and-nrf24-in-case/

@Mishka Ah yes, that is true. In this case though I went out of my way to keep the PCB dimensions as small as possible so that someone could have it made at OSH-PARK for super cheap--just $0.30 per board. If I ever figure out how to post a complete set of KiCAD files, then I guess maybe then everyone can modify it to suit their circumstances. Until then, it will be hard to have one's cake and eat it too.

@rvendrame sorry, I did not see your comment. Yes, it is VERY valuable. Thanks a lot

@ceech I really like this design, however I think it has a problem: According to the datasheet the TPS610986DSET has no feature to disconnect the load at low battery voltages. I think the result will be that e.g. a ESP32 or other power hungry chips will not power up properly. The TPS63031 might therefore be a better fit. btw.: Do you still sell assembled versions of this design? Would you be willing to create a new version with the TPS63031 and probably also with 10 or 20F capacitors or an board to solder your own capacitors. Best regards Tobias

Please Is it possible to buy only PCB? Do you plan also to release your sketch?

Good point! Will consider in the next version...

thanks for you reply Fumée Bleue.

Do you really need a compact device?

@scalz said in 💬 HALO : ESP32 multi transport GW/Bridge for Mysensors: the webapp was great, but I converted it to native crossplatform app for better versatility&perf, so I can use one app for my devices, like Ethernet for HALO etc, or Serial for my other Janus gw dongle, bluetooth.. To be honest, I've not updated anything yet for a few reasons, like very little spare time for a public release + support for such "big" project. (easier to handle local projects). Sorry, still no eta for the moment.. It is clear that there is not enough time. But this project can become popular. That's what's missing MySensors. ...This void must be filled.

Sure, there is already the KiCAD file including everything to play around with on your own; added a picture of the schematic here for a quick glance without downloading.

I am working on the analogous project. For several years I am using hw interface https://github.com/HynekBaran/OpenThermGWMini connecting the boiler and Arduino+NRF24L01 (which acts as a MySensors actuator). BUT: My boiler supports OpenTherm/Light (OT/-) protocol only. As far as I know, hw ("electric") specs of OT- are same as OT+ (2.0). So may be the simple OpenThermGWMini hw may be used, but there is missing MySensors sw part. See the original circuit diagram Maybe we may share?

@berkseo Thank you for your answer :) Good continuation on your nice project.

@acb Hi @acb and others, regarding "Do you know if there is a version of this board that is pad-compatible with the C-versions of these HopeRF RFM69s before I go searching? (Since I believe the C-versions are also pad-compatible with the RFM95s…)" - did you find any alternative? I'm in the same boat looking for an adapter from NRF24 to the footprint of RFM69*C = RFM95/96. Thanks, Joost

All done! It works. I made some corrections to the silk screen, so everything should now be in order. :-)

Perhaps answering my own question, I ordered one of these (it was $84, including delivery, during Black Friday) in order to properly characterize ultra low power energy harvesting circuits: https://www.aliexpress.com/item/33031557247.html?spm=a2g0o.cart.0.0.6f673c009dbs4n&mp=1 Ignoring its multimeter aspects, what remains is essentially a precision CV CC micropower supply intended for use as a calibrator. It has both microamp and microvolt output resolution, and the advertised accuracy (0.015% to 0.02%), if true, seems pretty good for the price. I should be able to calibrate a uCurrent Gold with it, for example. It may not arrive until much later in the month though. If anyone else wants to get one too, the normal price through this vendor is around $104, which to me still seems like a good price. I'm not sure why it's currently priced at $153, unless maybe it's in temporary short supply following the big Black Friday sale.