Circuit Lake

Smoke-O-Tron is PID controller for electric smoker temperature developed based on PICAXE microcontroller. The controller can handle the 1500W heater to within about 3 degrees F. It will measure temperature in the space and switching the heater on and off at a given speed.

The project shows you how to build a simple temperature alarm with PIC16C84 microcontroller and a 2-line LCD display. It can be used as a temperature alarm or a thermostat – the only difference being that with an alarm an intermittent beep is produced when a limit is exceeded.

The project is a plug-in daughterboard that converts a stock AVR Butterfly demo board into a barometric altimeter with one-meter resolution named Monarch. The major enhancements from ATmega169-based system including barometric sensing of air pressure, 10–110 mbar absolute range; Barometric altimeter, 1 meter resolution, >16K meters max; Digital temperature sensing; R/C (radio control) servo pulse [...]

This is 3 in 1 digital data logger project. You can take several measurements: Temperature, Humidity, and Barometric pressure measurements. The project use AVR ATmega8 as main processor. While humidity and temperature are sense by Sensirion SHT75 and the barometer use Intersema MS5534. Those two components talk their own language which is similar to other [...]