Circuit Lake

This PIC16F84A-based gas detector project has capability to sense many different types of gases like smoke, liquefied gas, butane and propane, Methane, alcohol, hydrogen, etc. This simple gas leak monitoring project only need few component and easy to build. It uses Smoke Sensor Module GH-312 to detect gas or smoke. For warning sign, the project is equipped with LED, LCD and Piezoelectric.Rui Cabral, project designer explains that during testing progress, the sensor is able to detect the gas from soldering iron. The system will trigger a flashing led warning, sound ...

The Camera Axe is an arduino based project that help photographers to trigger cameras or flashes automatically based on signals from various sensors such as a microphone, a motion detector, or light sensor; and there are two ports for camera/flash devices.This open source project is very useful for stop motion photography where an action happens too quickly for human reflexes i.e. photographing a popping balloon, lightning, or a milk droplet splash. This digital camera trigger can be used to catch things photographers don’t want to wait around for such as ...

This project describes the construction of a garage door control system based on ATmega16 microcontroller. The design uses a simple hardware to control a Garage Door with an RF Transmitter-Receiver Kit (AM110C1-315 and AMHIRK-315AR3 from OKW Electronics). With a single button press, user are able to open or close either the main gate or garage door, depending the use or application of the unit. The system also responds to a photocell when there is an object in the main door trajectory. Garage Controller Project Firmware, Schematic and Documentation circuitcellar.com

The project goal is to create 300W audio power amplifier for 4-ohm DIY speaker with low distortion based on IC LM3886. It's hope that the amplifier can produce deep, tight and punchy bass while keeping the excellent mids and highs from other gain clones.The schematic uses LM3886 in the inverted configuration, the reason is that user can use a trim pot to adjust the DC offset of each 3886. After some adjustment, The project able to get the DC offset of each 3886 to about 9mV, because this is a ...