miniLOG – Precision Standalone Voltage Logger
https://www.electronics-lab.com/project/minilog-precision-standalone-voltage-logger/
miniLOG is a precise standalone voltage logger that save the data on a SD card. It has 4 basic analog channels: one has 12bit resolution for voltage measurements, two channels have 10bit resolution for voltage measurements and one channel has 10 bit resolution for current measurements. Input voltage range is 0-25V and current range is […]
Serial 4-digit seven segment LED display
https://www.electronics-lab.com/project/serial-4-digit-seven-segment-led-display/
This project is a 7 segment LED display module that can be driven using SPI protocol, so it needs only 3 pins of your mcu to drive 4 x LED displays. It’s based on MAX7219 LED display driver. Description Seven segment LED displays are very popular for displaying numeric information because they are very attractive […]
DigiPot – Rotary Encoder Digital Potentiometer
https://www.electronics-lab.com/project/digipot-rotary-encoder-digital-potentiometer/
DigiPot is a digital potentiometer using a rotary encoder as input along with a 7 segment display that show the current pot value. Description The “potentiometer” is actually a rotary encoder (TW-700198) connected to a microcontroller that reads the signal from it and convert it to a value that is displayed on 7-segment displays. The […]
BO.Duino – ATmega328 Arduino Compatible board
https://www.electronics-lab.com/project/bo-duino-atmega328-arduino-compatible-board/
BO.Duino Description BO.Duino is an Arduino compatible board based on ATmega328 ATMEL’s mcu. This board features many peripherals usually externally connected on a breadboard or prototyping board such as sensors, SD card etc. Peripherals included are: A real-time clock AT24 series external memory chip MicroSD card adaptor (SPI) RGB LED A potentiometer on analog input […]
Automatic School Bell
https://www.electronics-lab.com/project/automatic-school-bell/
Description This project is an Automatic School bell system. Such a system triggers a bell (or operates any other load) at predifined time. In this version some advanced features are introduced: 16×2 LCD Display ( Displays current date, time and day) 4×4 Keypad for Inputs Stand alone product ( no PC required to program or […]
24×6 LED Matrix Control Circuit
https://www.electronics-lab.com/project/24x6-led-matrix-control-circuit/
This is a 24×6 LED matrix control board based on Syst3mX schematics on Instructables. The board is connected on the LED matrix board and an external MCU or Arduino is required to produce the control signals that are feed on GP8. Control Board Schematic Description The circuit is able to drive a 24×6 LED matrix […]
LED Binary Clock – Arduino Shield Compatible
https://www.electronics-lab.com/project/led-binary-clock-arduino-shield-compatible/
This shield is meant to be used as a Binary Clock on top of an Olimexino-5510. Other ‘duinos might work too. Schematic Description LED Matrix The main feature of the Clock is the 6×3 WS2812 RGB led matrix. These leds contain a little controller that accept a serial protocol for the color data and they […]
Open Source 3.2” TFT Smart Display
https://www.electronics-lab.com/project/open-source-3-2-tft-smart-display/
This project is an open source 3.2″ Smart TFT display board. The board is based on a PIC32 and a 3.2′ TFT with touchscreen (ILI9320 controller, using 16bits PMP). The software has two main parts. One that produces the 2D functions and a GUI with various widgets (buttons, check boxes, sliders etc). Schematic Description A […]
Digital & Binary clock with thermometer & hygrometer
https://www.electronics-lab.com/project/digital-binary-clock-with-thermometer-hygrometer/
Here we have a clock. It’s not “another clock”. It has digital and binary output. It also has a thermometer and a hygrometer. It’s not “another thermo-hygrometer”. It display’s absolutely humidity (gr/m3) also. Schematic MCU I build it around Microchip PIC16F917, with internal Oscillator at 4MHz. I also build a serial port programmer, so I […]
MultiKey – One Wire Keypad
https://www.electronics-lab.com/project/multikey-one-wire-keypad/
Introduction This is a simple and easy to make serial keypad. The microcontroller will output the number of the push button pressed. This project can be used for many different purposes. Probably the most used application would be to interface to any electronic project that requires a keypad. There are several ready made keypads on […]