In this video, I’m building a LoRaWAN Class A sensor node using an ESP8266, BME680 environmental sensor, and REYAX RYLR993 ...
The $50 sensor runs on two coin cell batteries so you don’t need a nearby power source for installation.
Tests confirm graphene-based energy harvesters can use ambient energy to run ultra-low power sensors — the first hurdle in developing autonomous sensor systems.
The update to last year's slightly confusing GoPro Hero 4K is here, and once again, I think it's a camera that lacks the ...