RS232 – MAX232 Interface Module
https://www.electronics-lab.com/project/rs232-max232-interface-module/
This project is a RS232 Interface Board based on MAX232 IC. Description This project provides you a simple and easy solution to connect / convert your Microcontroller input/output to be connected to the serial port of the Computer. This projects build around popular MAX232 level shifter IC to do the Level Shifting (Voltage) between 5 […]
Colpitts Crystal Oscillator
https://www.electronics-lab.com/project/colpitts-crystal-oscillator/
This project is a Colpitts Crystal Oscillator Description Firstly, I suggest you to read the article in ARRL Handbook 2015, Chapter 9 – Oscillator Circuits and construction. Then saw a video showing the construction of the Colpitts Crystal Oscillator (with Buffer stage) here. Thus, I assembled the circuit as “ugly construction” using the same […]
USB to Serial converter using FTDI FT230X
https://www.electronics-lab.com/project/usb-to-serial-converter-using-ftdi-ft230x/
This USB to serial converter project is easy to build, it is simple and inexpensive. It is based on theFT230XS from FTDI Chip. Description The FT230XS is outfitted in SSOP-16 packaging. The first incarnation of FT230X chips got a nasty bug when the chip inadvertently goes into suspend mode triggered by certain byte sequences. The […]
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 […]