Solar Mailbox project
https://www.electronics-lab.com/project/solar-mailbox-project/
The purpose of this project is to develop a self sufficient Mailbox (real one) that will be powered only by the sun and that will display the number of the house, but only in accordance with the battery level. The system must work autonomously when there is or not enough light to charge the battery. […]
MAX6953 Development board
https://www.electronics-lab.com/project/max6953-development-board/
The MAX6953 from Dallas Maxim is a compact cathode-row display driver that interfaces a microprocessor (like PIC or AVR) to four 5×7 dot matrix LED display trough an I2C compatible serial interface. The chip includes some features that can help us to handle easier the displaced data. These features are included on chip ASCII 104 […]
4 channel infrared remote relays
https://www.electronics-lab.com/project/4-channel-infrared-remote-relays/
Description 4 Channel Infrared (IR) Remote controller is using HT12A and HT12D encoder / decoder chips from Holtek. Features Supply – Transmitter : 3 to 5 VDC, 5 V @ 20 mA & Receiver : 5 VDC @ 200 mA Output : 4 channel Latch or Momentary on board Jumper for selection Crystal based oscillator […]
Dual Relay Driver Board
https://www.electronics-lab.com/project/dual-relay-driver-board/
Description Dual Channel Relay Board is a simple and convenient way to interface 2 relays for switching application in your project. Input – 12 VDC @ 84 mA Output – two SPDT relay Relay specification – 5 A @ 230 VAC Trigger level – 2 ~ 5 VDC Berg pins for connecting power and trigger […]
Solid state relay switch
https://www.electronics-lab.com/project/solid-state-relay-switch/
Description Solid State Relay Switch is a simple kit which will help you control (ON / OFF) a single high power circuit from a low power drive. Load – 24 to 240 VAC @ 500 W Trigger voltage – 2 to 5 VDC (TTL) @ 10 mA Input isolated with use of Optocoupler Power Battery […]
IR Remote Volume Controller
https://www.electronics-lab.com/project/ir-remote-volume-controller/
Schematic Parts List
Audio VU meter 9 leds
https://www.electronics-lab.com/project/audio-vu-meter-9-leds/
Description 5 LED VU Meter kit is based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses SUPPLY 12V DC @ 50mA PR1 REF SET PR2 AUDIO LEVEL SET Schematic Parts
Flyback Transformer Driver
https://www.electronics-lab.com/project/flyback-transformer-driver/
General Description and circuit operation This is an efficient flyback driver for modern cylindrical rectified television flybacks. Many sites doesn’t provide circuits driving these transformers, they simply say that they are bad. I don’t agree. In fact I built this circuit. I spent a lot of time for finding resonant frequency (around 15Khz) and duty […]
Tiny DDS – Open source DDS generator
https://www.electronics-lab.com/project/tiny-dds-open-source-dds-generator/
This project is an open source (hardware & software) DDS generator, based on: smart TFT module, AD9834, LM7171 fast amplifier. Description The homemade function generator is a quite common project on the internet. We can find different ways to do it: The quick & dirty way based on a DDS module bought on eBay The analog […]
NiCad-NiMh Battery Monitor
https://www.electronics-lab.com/project/nicad-nimh-battery-monitor/
This project is a NiCad-NiMh Battery Monitor based on LM3914 IC Description The simple project can be used as test gear. Its easy way to monitor the battery voltages, especially dry cell, NICAD, NIMH, supply up to 1.5 Voltage. Battery Monitor range 0.15V to 1.5V. The project is built around Texas instruments LM3914, The […]