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Circuit Image for Room Sensor
Room sensor consists of an Arduino Pro Mini, a 1.8" screen and NRF24L01 at the core with TMP36, Photocell, Hall Sensor, PIR Sensor and Softglow LED.
Circuit is powered from the mains utilizing a modified USB charger and linked via a 3.3v voltage regulator. It controls a lighting circuit via a solid state relay.
Luminosity and temperature are displayed on screen and all state data is sent to a central Arduino Tre for logging.