I have a well running battery-powered Heltec Wireless stick Lite (V3) with a DHT22 temperature sensor sending data to TTN every hour, and an (almost?) well running battery-powered Heltec Wireless stick Lite (V3) with a SEN0171 motion sensor sending data interrupt-triggered by the motion sensor to TTN but not more often then every 15 minutes. After placing the motion sensor setup 20 cm next to the temperature sensor setup, no motion data was sent for 3 hours (there was no motion) but afterwards the motion sensor got triggered every hour exactly when the temperature measuring board was sending, and this has been going on now for 20 hours. Unfortunately, the location of these devices is very remote and on-site trouble-shooting will be difficult. Any idea what is causing the motion sensor to get triggered by the board with the temperature sensor? Do I need a pull-down resistor for the motion detector? Could the 30 cm cable from the motion sensor to the connected board be the problem? Is there a minimum distance between the two Heltec Wireless Stick Lite (V3) ? Any ideas would be highly appreciated.
