TrH Meter kits are back in stock at Tindie

TrH Meter is a DIY digital room thermometer plus hygrometer that displays temperature and relative humidity on 4 large (1 inch) seven segment LED displays which adjust their brightness level according to the surrounding illumination. It consists of a closed loop system that continuously assesses ambient light condition using an inexpensive light-dependent resistor (LDR) and uses that information to adjust the brightness of the display. An inexpensive DHT11 sensor is used to measure temperature and relative humidity. You can buy a complete TrH Meter kit with a preprogrammed PIC microcontroller  for $26.00.

Displaying temperature in degree F

Temperature display in degree C

Humidity is displayed in percentage (P)

Tindie buying link for TrH Meter kit.

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