Sorry, only saw your message now. If still needed, I do have a few boards left.

Power consumption should be comparable to the blue pill with leds and regulator removed. Never got around measuring it myself but here are some results for the bluepill: https://www.stm32duino.com/viewtopic.php?f=3&t=658&start=40 , stating 13µA in STOP mode.
Also note that last time I checked, low power was not supported in MySensors for these MCU's so you would need to add it in yourself.

@ian1scott: sorry for the late reply. The part references can be found in the Fab layer in the kicad file.

@timo said in openHAB 2.2 binding:

I continue to hope for an integration in the main repository.

Hi @TimO,
What is preventing this? I'm willing to help if needed.

Version 4.2 was just published. The board now also contains breakout headers for I2C devices (temperature sensors such as Si7021, HTU21D, SHTT71 and BME280) and a headers for a RXB6 RF 433Mhz receiver. Not tested yet.

After testing the board for a few weeks I implemented a major redesign, marked as V4. Not tested yet.

Changes:

• Changed headers to XH2.54 connectors for leds and buttons
• Added secondary regulator to power RF modules
• Changed RFM69 footprints to remove unused pads
• Changed CHG340G chip to CHG340C, eliminating the crystal
• Relayed all traces for cleaner design
• Added capacitors at USB input power
• Added second capacitor for decoupling at RFM69 modules

@diogoc said in Recommendation for PCB fab?:

JLCPCB made good and cheap pcbs

I second that. Especially if you can combine a few PCBs in one order it is very interesting.

@yveaux and @scalz

Thanks for confirming. So only Clark's core is supported at the moment.

It would be interesting to support the official STM32 core as they provide low power functions. I will do some experiments.

@mfalkvidd said in Linux gateway don't receive Ack:

@freynder but if RSSI is excellent, it means someone else must be sending and the channel isn't free. So maybe the correct value is returned anyway in your calculation example (but the comparison is still strange)

Indeed you were right. I had a wrong understanding on how RSSI was measured. It appears to be an indication of "the amount of energy available within the receiver channel bandwidth", so if nobody is sending it will be low.

@rozpruwacz Ok, got it now. Thank you very much.