I have Some of these left over. They are plug-and-play for Raspberry Pi 2, 3 and 4. And they run out of the box with the MySensors gateway software for Raspberry Pi.
Please let me know if you are interested in one.
I'm not really familiar with FHEM, but as far as the MySensors side, you still need the gateway software running. However, this code can run directly on a Raspberry Pi, at least with a radio network for the MySensors transport. I haven't ever used RS485 myself, but I would think it would be similar.
At least the code itself has sections for dealing with running on Linux, which is what is used when running it on the RPi, so I think you're good. https://github.com/mysensors/MySensors/blob/master/hal/transport/RS485/MyTransportRS485.cpp
The gateway code runs as a systemctl service, so it can easily run in parallel with most things, so probably wouldn't conflict with FHEM on the same device.
Oh yeah, and in case you haven't found it, there's this page: https://www.mysensors.org/build/rs485
Success! In all my testing and trying new settings, I missed that I had commented out on the gateway the frequency setting. It was noobie mistake and I want to thank all of you for your help. I ended up using @FarmerEd's sketches to get my gateway and sensor to work.
Thanks again.
Hello everyone!
Based on the quite useful reverse engineered schematic at https://hackaday.io/project/174308-tradfri-pir-motion-sensor-hacking the measurements were somewhat sabotaged by the 2N7002 (see Connors comment "enables voltage dividers only when triggered").
the transistor is controlled by the Elmos E931.96 PIR motion controller IC.
The latter is programmable by the IKEA TRÅDFRI ICC-1 module's EFR32MG1P132F256GM32 MCU.
E.g.
2. Blind Time
Ignores motion after the interrupt output is switched back to 0
Range: 0.5s... 8s.
The blind time is [Register Value] *0.5s
3. Programmable pulse counter
1... 4 pulses with sign change in between
Amount of pulses = [Register Value] + 1
4. Window time
For noisy environments
2s... 8s window
Window time = [Register Value] * 2s + 2s
https://github.com/basilfx/TRADFRI-Hacking gives a good overview on that.
What is the issue with tose 60s?
Frequency and voltage of an Atmega does not effect radio quality of a NFR24 in any way (if it is stable and well decoupled voltage).
@Ethan-Chua said in Increasing range of 8MHz ATMEGA328P with NRF24L01:
Defined #define MY_RF24_PA_LEVEL RF24_PA_LOW
That's the opposite of what you want to achieve.
It either problem with cheap nrf modules, or your pcb design. By the way you have big problems with the latter:
Your PCB doesn't have separated ground plane, and even that thin piece of ground track that tries to get to the point isn't connected. And what even worse it almost touching 3.3V out pin of BL8530. You need pay more attention to track clearance and consistency. How are you powering this board?
