A family member gave me an old lamp with a fancy glass base. Well, I didn't like the lamp, but the base was nice, so I kept it in my basement for a few years. I found it again the other day and decided it needed to become a new type of lamp. I put a 150 LED strip (WS2812B) inside. I have an STM32 Blue Bill and RFM69HCW to run the light patterns and connect to MySensors.
In Domoticz, I have it set up as a dimmer light, but the node just switches patterns depending on what the dimmer level is.
At first, I wrapped the LED strip carefully around a tube that sits in the center of the glass jar, but it didn't look very good. Somehow just spiraling the strip in the bottom of the lamp has a much better effect.
My wife even liked it, so maybe I will put some finishing touches on it and actually use it as a lamp : )

I've been playing with an Adafruit AudioFX board and cobbled together this annunciator. Eventually it will be a MySensors node to play alarms or other sounds. It is using a cheap portable speaker to play the sounds. I got it to work with my doorbell button node today.

Just got a blue-pill, RFM69 node working. It was a bit of a learning curve moving from Atmega.

• Cheap J-Link: Never got it working. Cheap ST-Link: Worked
• Arduino (and VisualMicro) uploaded blink sketch with ST-Link: no problems
• Uploaded the USB bootloader using the ST-Link: no problems
• Took a while to figure out I didn't have the dfu driver loaded (Windows 10), but after that no problems using the usb
• MySensors security personalizer: no problems.
• Mock MySensors node: no problems. Talked to my gateway. Uses RFM69 encryption.

Seems like this is the Nano of the future, but without needing to level shift for 3.3V. I'm looking forward to making some real blue pill nodes and gateways.

BT832 Thin Node prototype. Inspired by https://forum.mysensors.org/topic/2067/my-slim-2aa-battery-node and @neverdie nrf5 and am612 research. I noticed the BT832 is about the same width as a AA battery holder. I'm using one AA LiFePo4. This is my first sensor with nrf5, bme280, and am612. I also incorporated a jst-sh 6 pin connector for programming. It includes swd, power, and text. All sensors are working. It did not turn out to be very thin. Need to try some smaller PIR lenses and rearrange components for the next iteration.

@mfalkvidd Thanks for doing this kind of work (deleting fake users and stopping spam). I am sure it is not as much fun as answering real questions about MySensors topics. But I learn so much from people in these forums, that I would hate to see it overtaken by trolls and spam.

Unlike the NRF24, the RFM69 is not 5V tolerant on the data pins. The Uno and Nano both have 5V data pins. The NRF24 can work with them as long as it has the 3.3V supply. Unfortunately, the RFM69 needs the data pins to be 3.3V also.
I have used the RFM69 915Mhz successfully with a 3.3V ProMini (all pins 3.3V). To use with the Uno or Nano, you would need to power from the 3.3V supply and use a 5V to 3.3V level shifter on the NSS, MOSI, and SCK data pins.

I finally got a BT832 (NRF52832 from Fanstel) to talk to my NRF24 gateway. I got the NFR5s a while ago. Made a quick breakout board (quick to design, but slow delivery). In the mean time, I configured a STM32 "Blue Pill" as a Blackmagic Probe to program it. I had to get the latest Sandeep Mistry NRF5 files from github in order for it to support the blackmagic probe, but . . . it worked : ) So far I have just run the MockMySensors and it shows up on Domoticz.

@NeverDie
There is an article on hackaday about this type of clamp that even has a KiCAD footprint. I bought one of the clips, but haven't tried it out yet.
https://hackaday.io/project/165917-soicbite-programmingdebug-connector-footprint

I also tried this one from Adafruit;
https://www.adafruit.com/product/4048
small, jlink-mini compatible, and polarized.

So far, my preferrred solution is a 6 pin jst-sh connector.
small. 3v3, gnd, swdio, swclk, tx, rx
and polarized.

My old eyes get tired of confirming I have the pins on in the right direction. Polarization is really nice.

@sundberg84
@tbowmo
Domoticz can also push the data to influx DB. See Settings>More Options>Data Push

It's a breakout for a Fanstel BT832 (NRF52832). Two experiments with this board, still a work in progress:

• I wondered if it would be possible to hand solder to the LGA pads on the back of the BT832 using small plated thru holes (6 solder spots middle left in the first picture). Two pads connected. The rest did not. About what I expected.

• Using just the microprocessor of the BT832 to make a LoRa node. (NRF5 radio turned off). So far the Ra-01 is not initializing. Edit (10/8). The RA-01 now initializes. I needed to update the pin assignments in MyBoardNRF5.h.

The NRF51822 uses the same Nordic radio protocol as the NRF24, so you don't have to set up a new gateway. If you build an NRF5 based sensor, it can send signals to your NRF24 gateway.
I have not used the NRF51822, but have used the NRF52832. The sketches worked, although the pinouts are different from the arduino processors, so you may have to tweak those.

If you haven't seen it already, check out these threads:
https://forum.mysensors.org/topic/9266/guide-nrf5-nrf51-nrf52-for-beginners/11
https://www.openhardware.io/view/376/MySensors-NRF5-Platform

I got tired of twisting DuPont cabels to get from different programmers to different boards.
This is an adapter that lets me connect the programmers I commonly use (Jlink-mini, BMP, STLink clone) with the boards I commonly program with straight through wires. I left a couple unpopulated for future in and out.

That is weird. I can't see what is wrong. Especially since it compiled the one in digitalWrite.
I just tried pasting your code into a sketch I was working on and it verified (different board and radio, but it doesn't seem like that should matter).
Using Arduino 1.8.9

I tried this one: https://github.com/replaysMike/Binner
Close to what I want, but I couldn't get the digikey and mouser downloads to work. That would have made it really useful.
Both digikey and mouser have ways to save BOMs, but it is tied to their web site of course.

I have domoticz and on a rpi with 3 serial gateways. It used to destroy SD cards pretty regularly.

I went with this power supply from Adafruit (It is actually 5.25V) and a UPS.
https://www.adafruit.com/product/1994

Also, I use log2ram.

That has finally made my rpi domoticz setup reliable. I have been running about a year without problems. I still back up often. : )

It's s WS2812B LED strip driver using STM32 blue pill and RFM69HCW.
I have made a few revisions previously, but this one fits an off-the-shelf enclosure and uses the pcb and enclosure lid for strain relief on the LED strip connector wires.
I like the concept of using the enclosure slots to hold the pcb. Maybe a slightly smaller enclosure next time.

I tried with MY_DEBUG_VERBOSE_NRF5_ESB, and it woke from sleep. I have it seeping for one minute.

I posted my code to my github in case you want to take a look:
https://github.com/spike314/BT8_SI_Sketch

I have the nrf5 routines and some battery routines in separate files for convenience, but I think we are using the same code otherwise.

I'm stumped so far.
I have a very similar board, bt832 + SI7021, with a very similar sketch, which seems to work OK.
I don't see anything out of place in your sketch.

@NeverDie
There is an article on hackaday about this type of clamp that even has a KiCAD footprint. I bought one of the clips, but haven't tried it out yet.
https://hackaday.io/project/165917-soicbite-programmingdebug-connector-footprint

I also tried this one from Adafruit;
https://www.adafruit.com/product/4048
small, jlink-mini compatible, and polarized.

So far, my preferrred solution is a 6 pin jst-sh connector.
small. 3v3, gnd, swdio, swclk, tx, rx
and polarized.

My old eyes get tired of confirming I have the pins on in the right direction. Polarization is really nice.

I use the RA-01 with MySensors RFM95 drivers. Works just fine.
I have not tried to change the frequency though. I have only used 433Mhz.