These projects are targeted for beginners. They will include small do it yourself kits and small projects that will target basic components. The time for these project are generally anything under 60 minutes.
This project is a sound meter shown by LEDs. It makes use of an electret microphone, op amp, and LM3914 LED Driver IC. How it is used is the louder the environment around the sensor is, the more LEDs are turned on by the LM3914. It’s a fairly simple and interesting project that’s ideal for newcomers to electronics.
The small AC to DC Voltage Converter project uses four diodes to make one bridge rectifier to transfer AC power to DC power. Also, we use capacitors to remove ripples in the circuit. After we transfer from AC power to DC power, we need to use one 5v voltage regulator to give 5v DC output from 12 v DC output.
This is a piano board with eight push button switches that allows you to play one octave (Do Re Mi Fa So La Si Do) and with this one octave you can try to play some songs you like. For this project there are some important knowledge you need to know before you start.
This project demonstrates the basics of digital logic, the characteristics of a NE555 timer, and demonstrates how binary numbers are counted. The components used are: a NE555 timer, a 12-bit ripple counter, two 2-input NOR gates, a 4-input AND gate, a 2-input AND gate, and a 2-input OR gate. The logic gates, NOR, AND, and OR come in TTL and CMOS equivalents which can be found at Lee’s Electronic. This project is a simple egg timer with two settings: hard or soft boiled and comes with a reset...
This project is designed to keylessly lock and unlock the door by knocking. The device makes it convenient for the user since the user does not need a key to lock the door especially when the user is racing against time. Users can unlock the door by using a secret knock, the secret knock pattern can easily be changed by a user.
A step-by-step tutorial on how to build an electric gear motor back scratcher. This project introduces the concepts of PWM, geared motors, 555 IC timers, potentiometers, relay circuit design, soldering, prototyping circuitries on PCB, and 3D designing.