Smart Garden
https://www.electronics-lab.com/smart-garden/
by FABLAB Dhahran @ instructables.com: In this project we will design and program a smart garden watering system. This system will use Arduino UNO and a moisture sensor to measure the volumetric water content in soil. It will also have a light (photocell) sensor to detect when the plant should get sunlight. So, when the soil […]
LED Fade using Arduino Uno
https://www.electronics-lab.com/led-fade-using-arduino-uno/
by DIYmasters @ instructables.com: Hi everyone, this is my first Instructable, and in it, I’ll be showing you how to fade an LED with an Arduino Uno , 2 Jumper wires, 1 Resistor, and a breadboard. LED Fade using Arduino Uno – [Link]
A Connected Lamp to Wake Me Up
https://www.electronics-lab.com/a-connected-lamp-to-wake-me-up/
Limpkin has modified his IKEA lamp to use 10W LEDs. So for some reason I bought 2 IKEA lamps at a flea market. As IKEA furniture has a long history of being hacker-friendly, I figured they shouldn’t be an exception to the rule. My plan? Fit a few 10W RGB LEDs in there together with […]
Fake TV Security Light
https://www.electronics-lab.com/fake-tv-security-light/
by Marcus Jenkins: This gadget steps up the game from leaving a light on at home when you’re out. Place it near a window to make it look like somebody’s at home watching TV. The idea of leaving a light on at home while you’re out is to give the burglar an uneasy feeling that […]
Voltage indicator transitions between colours
https://www.electronics-lab.com/voltage-indicator-transitions-between-colours-2/
by Einar Abell @ edn.com: This Design Idea gives two versions of an indicator light that changes from green to red as a battery discharges. There are many circuits that do this sort of thing, but all the ones I have seen are too complex and costly for my taste. This DI shows a method […]
Colour Injector lamp
https://www.electronics-lab.com/colour-injector-lamp/
by Taras Sgibnev: The colour of light emitted by this lamp can be controlled using syringes filled with red, green and blue ink. Russian designer Taras Sgibnev developed the interactive product as a physical expression of the way red, green and blue light are used in digital interfaces to create a full spectrum of different hues. […]
Tutorial on the Design & Implementation of an FPGA RGB LED Matrix Driver
https://www.electronics-lab.com/tutorial-on-the-design-implementation-of-an-fpga-rgb-led-matrix-driver/
In this episode Shahriar and Timo demonstrate the design methodology of an FPGA based 32×32 RGB LED matrix driver. Timo has kindly devoted some of his time to describe the block diagram and the thought process which goes into designing this type of FPGA display driver. The various components of the overall system (PLL, UART, […]
0-20V Bargraph Voltmeter
https://www.electronics-lab.com/0-20v-bargraph-voltmeter/
0 – 20V LED Voltmeter kit displays the voltage of the source using 20 LED’s. This projects is based on the famous LM3914 IC from National Semiconductor. Power Supply Input: 5 VDC Max @ 30 mA in DOT mode and 300 mA in BAR mode 0-20V Bargraph Voltmeter – [Link]
PCA9550 LED Driver With Programmable Blink Rates
https://www.electronics-lab.com/pca9550-led-driver-with-programmable-blink-rates/
This project introduces the use of PCA9550, an LED driver that causes the 2 LEDs to ON/OFF or in a flashing state at programmable rate. It has 2 selectable, fully programmable blink rates between 0.172Hz and 44Hz or 5.82 seconds and 0.023 second respectively. Its internal oscillator does not require external components and I2c bus […]
How to build a simple laser tachometer
https://www.electronics-lab.com/how-to-build-a-simple-laser-tachometer/
Did you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices. How to build a simple laser tachometer – [Link]