Circuit Lake

Electronic Project and Circuit Collection

LCD Related Resources

Interfacing 8 LCD Displays to Microcontroller with Only Two Wires

June 13, 2013 By: admin Category: AVR, Display, Interfacing No Comments →

If you have electronics project that need many LCD display with limited MCU IO pin out, you can use this method to accomplish it. Jesus Echavarria has successfully interface 8 LCD displays and 24 Leds with only two wires: SDA and SCL from an I2C bus. The project uses MCP23017 (16-Bit I/O Expander with Serial […]

Liquid Supply Controller

April 08, 2013 By: admin Category: Control, Measurement, Project No Comments →

This liquid controller project can be used to measure & supply exact amount of liquid like water, petrol, kerosene, juice, cold-drinks etc. It uses simple set up for the hardware – an AT89S52 Atmel microcontroller, motor relay, 16×2 LCD and three buttons for input. The system uses time value rather debit counter to measure and […]

Air Humidity and Temperature Data Logger

March 22, 2013 By: admin Category: Data Acquisition, Measurement, Monitoring, PIC No Comments →

This temperature and air humidity data logger is built based on PIC16F876A microcontroller and SHT11 sensor. The sensor provides accurate measurement and is fully calibrated (no need to calibrate from user). The logger can measure temperature with range from -40°C to 99°C and Humidity from 1 – 99% with resolution 0.1°C temperature and 0.1% RH. […]

Arduino Motorcycle Control Panel

February 18, 2013 By: admin Category: Arduino, Measurement No Comments →

This motorcycle control panel is built based on Arduino. It works as motorcycle speedometer, tachometer and gear indicator. It read pulses from bike’s tachometer circuit and reed switch senses wheel rotation. At each wheel pass it calculates wheel speed in RPM and then divides that into the most recent engine RPM. The ratio is unique […]