Motorized Curtain with Remote control
https://www.electronics-lab.com/project/motorized-curtain-with-remote-control/
Introduction The project is “Motorized Curtain” with Remote control. It is made up of MCU ATMEGA328 with Arduino BootLoader, motor driver L293D ( i used L293B with external diodes, because i couldn’t find L293D ), IR Receiver TSOP 1738, DC Motor from an old printer and other small parts. To control it, i use […]
Digital Impulse Relay
https://www.electronics-lab.com/project/digital-impulse-relay/
Introduction In the first place, a relay is like a switch to a coil assembly. This switch is activated when electricity is applied to the coil. With a common relay, the electricity must be continuously applied to the coil to maintain the contacts, but the impulse relay “remembers” and only requires a momentary application of […]
Infrared Toggle Switch for Home Appliances
https://www.electronics-lab.com/project/infrared-toggle-switch-for-home-appliances/
Introduction The infra-red (IR) toggle switch project described here is aimed to provide control mechanism for electrical appliances that do not have remote operation features. The goal is to construct a black box where you can plug-in your 120V AC appliance and control ON and OFF operations with any modern IR remote control devices. Modern […]
PIC PWM Fan controller
https://www.electronics-lab.com/project/pic-pwm-fan-controller/
Description This project it´s based on a PIC18F25K20, with the purpose of control a FAN with PWM (Pulse with Modulation). It offers a variable speed control, low acoustic noise, reliability, long lifetime, low power consumption, protection features. The MCU get the temperature from the sensor (D18B20), and after will do a conversion Celsius degrees and […]
Super Bright Led Flasher
https://www.electronics-lab.com/project/super-bright-led-flasher/
Description This is a novel flasher circuit using a single driver transistor that takes its flash-rate from a flashing LED. The flasher in the photo is 3mm. An ordinary LED will not work. The flash rate cannot be altered by the brightness of the high-bright white LED can be adjusted by altering the 1k resistor […]
12V Relay on 6V power supply
https://www.electronics-lab.com/project/12v-relay-on-6v-power-supply/
Description This circuit allows a 12v relay to operate on a 6v or 9v supply. Most 12v relays need about 12v to “pull-in” but will “hold” on about 6v. The 220u charges via the 2k2 and bottom diode. When an input above 1.5v is applied to the input of the circuit, both transistors are turned […]
Simple Servo Tester
https://www.electronics-lab.com/project/simple-servo-tester/
Description This is a simple servo tester which will comprehensively test the capabilities of almost any modern servo. It has two pushbuttons, CENTRE and SWEEP and a potentiometer which works as follows: CENTRE Does exactly that, centers the servo, afterwards the potentiometer determines position. SWEEP Sweeps the servo back and forth at a rate determined […]
Dark Sensitive Switch
https://www.electronics-lab.com/project/dark-sensitive-switch/
Description Dark Sensitive switch project based on single BC547 transistor, Relay operates when light that falls on the LDR, goes below a set point. It’s very simple and low cost dark sensitive switch required few components. Features Input : 12 VDC @ 55 mA Relay output : NC – C – NO Onboard preset to […]
555 stepper pulse generator
https://www.electronics-lab.com/project/555-stepper-pulse-generator/
Description The 555 Stepper Pulse Generator kit will help you with the pulse required to drive your favorite DC Servo Motor application. This kit uses the famous 555 timer IC for generating the Stepping Pulse. Input – 5 – 12 VDC @ 25 mA TTL/CMOS interfaceable Jumper selectable two speed operation Onboard preset to vary […]
200W Lamp Flasher
https://www.electronics-lab.com/project/200w-lamp-flasher/
Description 200W Lamp Flasher kit is used to flash lamps, bulbs and halogen lamp to give your product that attracting look. Input supply – 6 ~ 12 VDC Output – upto 200 W lamp / bulb load Optically isolated Mains supply Onboard preset to adjust the frequency (speed) of flashing (1 Hz to 5 Hz) […]