We are now selling the BLUE COLORED DIY Arduino kit This post shows you how to assemble the DIY Arduino board. The assembly process is straight forward. It can be easily assembled if you follow the silkscreen indicators(labels) and have beginning experience with a soldering iron. You will need to read the resistor bands or use…
This project is a Mini Stereo Audio Amplifier based on TDA2822 IC. DESCRIPTION The dual low power amplifier built around TDA2822 8pin DIP. IC, it is mainly designed to use in portable players, radios and other building block project. A 3V supply can be used to drive headphones providing 20mW in 32 Ohms per channel, and a…
Dark Sensitive Lamp controller project switches a load connected to it when light falling on LDR (Light Dependent Resistor) goes bellow set point. It could be used as an automatic street light application. The project is based on Triac and doesn’t requires additional DC supply, it works directly on 230VAC. FEATURES Mains supply input 230…
Ultrasonic range finder on breadboard.
LCD is very important part of many DIY and industrial projects. The 16X2 LCD shield has been designed to develop LCD related projects using 28-40 Pin Pic development board or DSpic development board, along with LCD this shield includes LMD18201 DC Motor driver , 2 Trimmer potentiometer and 4 tact switches with jumpers. Jumpers can be…
Contact-less controlled automatic wardrobe light turns on the LED when you open the wardrobe door. Τhe project is based on Hall effect IC including LED driver and tiny magnet. Board doesn’t require any mechanical switch. When magnet is close to the board, LED is off, when you open the wardrobe door magnet goes far from…
In this tutorial, we will build a digital ultrasonic distance meter. We will use a 16×2 LCD display to view the distance measured. We are using ultrasonic range finder HC-SR04 for this project. The HC-SR04 sensor measures the time taken by the sound waves transmitted after meeting an object that reflects them.
In this tutorial, we will learn to make a buzzer sound like an ambulance siren and at the same time we will flash an LED. We will learn to change the frequency of the sound to make a two-tone sound. If you want you can insert a potentiometer to increase or decrease the volume.
8 Digit serial numerical display shield for Arduino has been designed for various applications like digital clock, stop watch, score display, temperature meter, frequency counter, digital meters etc. The circuit uses popular MAX7219 IC and two common cathode 0.5inch red seven segment displays. The MAX7219 is a compact, serial input/output common-cathode display drivers that interface…
Here’s a simple experiment with LDR and CD4093. This is just a modification of a previous project “dark sensor using 2 transistors”. In this project, the CD4093 is configured in such a way that whenever you block light falling on LDR, the circuit starts blinking the LED D1. The flasher circuit does not get power…
This is a simple RC circuit using thyristor. You might have done similar projects using transistors. Let me provide you some of my previous RC projects: a. Basic RC project You can make several projects with this module, for example, Remote tester, object counter, etc.
This works same as the other dark detector circuit. When light is falling on LDR, its low resistance drives transistor Q1-BC547 into conduction. This keeps transistor Q2 cut-off due to low base bias. The D1-LED does not get power as long as ambient light falls on LDR. When the resistance of LDR becomes high in…
This is an LED flasher kit based on NE555 and 74HC595. The LEDs on this kit scroll and give a water flowing effect. The bistable circuit formed by NE555 and 74HC595 generates an oscillating pulse and adjusting the value of RP changes the oscillating frequency so that the flowing speed of the LEDs can be…
SCHEMATIC PARTS LIST PCB DOWNLOADS IR_remote_volume_controller.pdf
TSIR04B is similar to TSIR04. In this device, we have removed the OLED display and put the relay board in a plastic enclosure. This is a TSIR04B Bluetooth version relay board with optically isolated inputs and temperature sensor port. You can easily control this relay board by your computer or smartphone using Bluetooth. The communication way…
SEE ALL THE PHOTOS ON FLICKR This post shows you how to build the Amarino evaluation shield. When you buy the shield package, you will get the following components. Fully assembled kit is now available on buildcircuit.net. The PCB: PCB clearly shows the pin and component names, so, it should help you to get idea of…
This small module helps you measure moisture of soil. It is a low cost sensor that you can purchase from Ebay. To modify the sensitivity of the soil moisture sensor, just rotate the potentiometer on the module.
Remote operated musical bell is one of the interesting experiments every electronics hobbyist would like to make. We have made a very simple remote-operated musical bell DIY kit that requires your half an hour labor to make it work. It uses CD4017 decade counter, UM66 or BT66 musical chip and TSOP4838 infrared sensor as its…
