Sorry, only saw your message now. If still needed, I do have a few boards left.
Posts made by freynder
RE: 💬 STM32 Sensor Node
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.
RE: 💬 ESP32 MySensors Gateway V4.4
After testing the board for a few weeks I implemented a major redesign, marked as V4. Not tested yet.
- 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
RE: Is the 32-bit ATSAML10 the ATMEGA328P killer that we've been waiting for?
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.
RE: 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.