Here’s one simple circuit idea of a 4-digit 7-segment light emitting diode display module which can be driven by many microprocessors and development boards. I have been using it with my Arduino microcontrollers since getting […]
Let me have my say – it’s my habit to do things over again. Not a mere repeat of anything that fitted well, but wishing to try potential betterments at slightly different angles. Confused? Sorry, […]
Grey is the neutral achromatic color midway between white and black – Am I right? If you want to make something of yourself to detect the grey, let me give you a cheap and cheerful idea. […]
Do you like the idea of high-voltage electronic sparking devices, but don’t have the time or patience to learn the complex theory? Here’s a simple tutorial that can help you to make many high-voltage projects […]
USB LED Flashlight presented here is a simple do-it-yourself rechargeable flashlight with built in rechargeable cell, cell charger, white light source, and a standard usb interface for overnight charging. Since the design is based on […]
While Googling for nothing, I noticed a little device “USBtinyISP” helpful for programming Attiny85 microcontrollers using the same setup method as for handling Arduino sketches. There’s also no difference in the development environment as we […]
Here is a simple yet highly reliable thermal control circuit which can be used with almost all electric geysers. The Arduino microcontroller based circuit switches an electromagnetic relay on or off according to the temperature […]
In yesteryear I’d designed and developed an AC230V over voltage protector switch based on the popular PIC microcontroller PIC12F675 (shown below is the photo of that prototype). The electronic switch can be used to safeguard […]
Optical smoke alarms, also known as photo-electric smoke alarms, are particularly useful in bedrooms, lounges, hallways, and in other areas where we can otherwise expect false alarms from the common ionization smoke alarms. An optical […]
Recently I came to understand the true demand for a multi-purpose digital pulse counter. So I designed an east-to-build digital pulse counter circuit based on some generally available cheap electronic components. The quick microcontroller based […]
