This is yet again a very simple astable multivibrator circuit using NE555. The circuit produces a sound that somewhat sounds like a raindrop. This is a very basic electronic kit project for electronics beginners and hobbyists. Anyone with basic electronics and soldering skills can build this easily.Continue reading
The circuit is an astable mode timer. The output frequency of the NE555 varies with the change in resistance of the photoresistor. When you block the light falling on the photoresistor, its resistance drops and that contributes to the change in frequency of NE555.Continue reading
This is a great kit to learn the basics of soldering. The SparkFun ClockIt is a basic alarm clock with buzzer based on the ever-popular ATMega328. If you’re just learning how to solder, this kit should take you 15-20 minutes. If you’re a weathered pro at soldering, this is a great relaxing build that should take 5-10 minutes.Continue reading
The kit has a photoresistor and an infrared sensor. The photoresistor works with laser light and the infrared sensor works with NE555 based infrared transmitter.
The receiver/counter module also has a NE555 based monostable circuit that gets triggered whenever the infrared ray or the laser light is blocked.
This is an LED flasher kit based on NE555 and 74HC595. The LEDs on this kit scroll and give a water flowing effect.Continue reading
This is yet another heart-shaped multicolor LED flasher DIY kit. The soldering process is pretty straight forward. The silkscreen label should guide you through soldering. It takes around half an hour to build the kit and basic soldering skill is enough to build it.Continue reading