Build Your Own I2C Sensor
https://www.electronics-lab.com/build-i2c-sensor/
Since Raspberry Pi doesn’t have a built-in ADC (Analog to Digital converter) to read the voltage off from most of sensors, the best solution is to add I2C ADC chips and modules to your project. Paweł Spychalski faced this problem while building his own weather station that is based on Raspberry Pi. It collects various […]
How to Measure LUX With Arduino
https://www.electronics-lab.com/measure-lux-arduino/
In this tutorial codebender_cc uses the Adafruit TSL2561 sensor to measure LUX with Arduino. The TSL2561 luminosity sensor is an advanced digital light sensor, ideal for use in a wide range of light situations. Compared to low cost CdS cells, this sensor is more precise, allowing for exact lux calculations and can be configured for […]
TritiLED – Multi-year always-on LED
https://www.electronics-lab.com/tritiled-multi-year-always-led/
Ted Yapo has designed a multi-year always-on LED replacements for gaseous tritium light sources. TritiLEDs are always-on battery powered LED glow lights for general night-time marking use. Radioactive gaseous tritium light sources (GTLSs) are allowed in the United States in several consumer product categories, including watches, compasses, and gun sights, but general-purpose markers are considered […]
Dark Sensitive Switch – LED Light
https://www.electronics-lab.com/dark-sensitive-switch-led-light/
Dark activated LED light is a simple project which operates a LED when the light falling on the LDR goes below a set point. The circuit is built using LM393 comparator, LDR as light sensor, preset (potentiometer) for sensitivity adjustment, transistor to drive the LED. The project can also be considered for use in energy […]
Ambient light and proximity sensors sense distances up to 10cm
https://www.electronics-lab.com/ambient-light-proximity-sensors-sense-distances-10cm/
With its APM-16D17-05-DF8-TR8 and APM-16D17-06-DF8-TR8 ambient light and proximity sensors, Everlight aims to save energy and reduce unwanted signals and noises when used in smartphones, tablet PCs, residential smart lighting and digital signage applications. [via] Both series use a specially coated photo diode with an optical response similar to human eyes. They have a common […]
A Smart Night Lamp for Kids
https://www.electronics-lab.com/a-smart-night-lamp-for-kids/
A Smart Night Lamp for kids. Tutorial and source code available: Few weeks ago I heard my nephew (aged 7) complaining of the dark at night. Basically he was afraid. So I decided to put knowledge into practice and build a night lamp for kids. Since the project was intended for kids, I thought of […]
Better LEDs with just a trick of the light
https://www.electronics-lab.com/better-leds-just-trick-light/
Jan Buiting @ elektormagazine.com discuss about a new technique used by scientist to build better LEDs. By manipulating the incident light, researchers of the Complex Photonics Group at University of Twente in Enschede, The Netherlands, have turned light propagating in a layer of scattering nanoparticles into a rising diffusion curve. By transforming the diffusion curve […]
Arduino controlled Triac light dimmer
https://www.electronics-lab.com/arduino-controlled-light-dimmer/
diy_bloke @ instructables.com has build an arduino controlled triac light dimmer and describes the circuit and software used to achieve that. It becomes a bit more tricky if one wants to dim a mains AC lamp with an arduino: just limiting the current through e.g. a transistor is not really possible due to the large […]
PWM dimmer for LED lighting
https://www.electronics-lab.com/pwm-dimmer-for-led-lighting/
Lukas Fassler has published a new project, a DIY PWM dimmer for LED lighting. The dimmer can handle 100W@12V and is controlled by a single potentiometer. I have recently moved to a new penthouse and was looking for a PWM dimmer to control some 12V LED strips. I thought that should be easy enough nowadays […]
Light To Audio Oscillator
https://www.electronics-lab.com/light-to-audio-oscilator/
Light Sensitive Audio Oscillator project is a fun loving project which will create different sound effects depending on the light falling on the sensor Specifications Supply input 5 ~ 12 VDC Output 8 Ohms, 0.5 W Speaker Terminal pins for supply voltage and speaker connection Power-On LED indicator PCB dimensions 38 mm x 44 mm […]