I want to use several PIR sensors in my home, but I don’t want to make them myself.
As for now I have received 2 cheap PIR sensors from the great Chinese people. Both work without a problem in Pimatic. One PIR sensor just burst whenever there is movement. In a ‘busy’ room this would lead to a burst every 6 or 7 seconds. there are no jumpers on the PCB.
The other PIR is almost perfect. Again a known pimatic protocol, but this PCB also has jumpers. You can change the interval to 5 seconds, 50 seconds or 5 minutes. Perfect for what I want. Unfortunately it’s made with Chinese precision, resulting in a interval every 4 minutes when set to every 5 minutes :D
Even better would be the same PIR with the same protocol but sending in a 315 Mhz or 868 Mhz frequency, This would offload the 433Mhz channel a lot.
Problem is : it’s China. Not always is there info about interval / jumper setting so you have to wait until you have the device in your hands. after that you have to test if the protocol is recognized at all.
Has anyone bought some Cchina PIRs for a low price with all these requirements? Tips are welcome.