Circuit Lake

If you want to build a contactless temperature measurement and looking for an idea, then this project is for you. Martin Nawrath has built non-contact infrared thermometer using MLX90614 and Arduino. This device can be used to measure temperature with range from -70 to +380 degree Celsius. Just connect the four leads to your Arduino [...]

The aim of this project is to build a wireless 2×16 character display that fit to Altoids tin. It can be used to display data which is sent from the PC using a terminal program such as the Arduino ‘Serial Monitor’.
The project consists of two main parts, first, the ‘remote’ Altoids tin containing Arduino, LCD [...]

This project shows you how to build a simple Li-on Battery Capacity Tester. It consists of single resistor that discharges battery. Arduino measures the voltage drop across resistor. According to Ohm’s Law current = voltage/resistance. Every second value of current is divided by 3600 and summed up to get the capacity expressed in Ah (Amp [...]

If you want to make a handy humidity and temperature sensor then this project is for you. This mini Temperature / Humidity Monitor is built based on Arduino (Atmega 328P) and Sensiron SHT11 sensor. To display the result, it is equipped with Adafruit 128×32 OLED. The project uses LEGO shell for housing. The project powered [...]