One Channel Relay Driver
https://www.electronics-lab.com/project/one-channel-relay-driver/
This project is an one Channel Relay Driver suitable for a variety of projects. Description Single Channel Relay project is a simple and convenient way to interface a relay for switching application in your project. Specifications: Input – 12 VDC @ 42 mA Output – SPDT relay Relay specification – 5 A @ 230 VAC […]
8 Channel Relay Board
https://www.electronics-lab.com/project/8-channel-relay-board/
This project is a general purpose 8 Channel Relay Board. Description 8 Channel Relay Board is a simple and convenient way to interface 8 relays for switching application in your project. Input voltage level support TTL as well as CMOS. Easy interface with Microcontrollers based projects and analog circuits. Specifications: Input supply 12 VDC @ […]
Electronic Toggle Switch
https://www.electronics-lab.com/project/electronic-toggle-switch/
Description This circuit is based on CMOS CD4013 Flip Flop IC. It has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. A short button press of a tactile switch SW1 latches the circuit ON and another toggles it back OFF. Relay switch contacts can […]
Dot matrix LED running display v2.0
https://www.electronics-lab.com/project/dot-matrix-led-running-display-v2-0/
Features LED matrix display 40×7; Display of clock, calendar, inside and outside temperature, custom text massages; Automatic Daylight Savings Time; Capability of keep the real time clock works correctly for more than one week without power supply. Clock automatic calibration a software function, adding or subtracting a preset number of seconds (0-59) once time […]
USB to Serial converter using PL2303SA
https://www.electronics-lab.com/project/usb-to-serial-converter-using-pl2303sa/
This USB to serial (TTL) converter project is easy to build, it is simple and inexpensive. It is based on the PL2303SA USB to USART bridge from Prolific. Description The PL2303SA chip is not required an external crystal as the internal clock oscillator is continuously tuning up to USB bus frequency. Having chip […]
USB to RS485 Adapter
https://www.electronics-lab.com/project/usb-to-rs485-adapter/
This is a simple USB to RS485 bus adapter. The adapter is designed using a FTDI basic UART chip (FT230XS) and an inexpensive TI differential receiver (SN75176) Description While developing the Luma RS485-networked LED driver we discovered a need for a small and inexpensive USB to RS485 adapter. We designed an adapter with a […]
Toggle ON / OFF Switch with a single push-button
https://www.electronics-lab.com/project/toggle-on-off-switch/
This project describes how to build a “soft touch” switch. By “soft touch” we mean that you have to push once to set the device ON and push again to set the device OFF. This kind of switch works by latching a relay to ON state with the push of a button and with another […]
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 […]