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“Required parts: Basys3 FPGA 8x8 RGB LED Matrix by GEEETECH 9V battery 2N3904 transistors (x32) 1K resistor (x32) 100 Ohm resistor (x1) 50 Ohm resistor (x1) The LED Matrix is a common anode matrix with 32 total pins. The common …
“After looking through many instructables it’s clear that many makers love to use the pre-assembled relay modules to switch large loads or mains voltages using their Raspberry Pi or Arduino. These can be bought from places like eBay for …
“The Certamen quiz team competition from the Junior Classical League involves quiz questions on Greek/Roman subjects. Individual contestants press buzzer buttons when they have an answer. The machine keeps track of the order in which buttons were pressed, subject …
“Gases such as natural gas can be incredibly dangerous, and can even lead to death if not kept in check. In this DIY Hacking project, we will look at the MQ-2 Gas Sensor, understand how it works, and learn …
“IoT Cat Door using a Raspberry Pi 3, Node-Red and BLE tracking tags! The goal of this project is to build an IoT style motorized pet door so we can control which animals can come into the house. For this …
“Alarm circuits are common in the field of hobby electronics, typically utilizing a switch (such as a reed switch) and a speaker to produce an alarm. However, the alarm system in this project has several unusual features that will be …
“Have you ever wondered where the term “Breadboard” came from? Here’s an example of what breadboards were all about. In the early days of electronics, components were large and cumbersome. They didn’t have transistors or integrated circuits, only …
“High-power LEDs over 1W are now quite inexpensive. I’m sure many of you are incorporating LEDs as light sources in your projects. However I realize that the finding and configuring the power supply is still not as simple as …
“Hey everyone, getting busy with your DIY projects? If your projects are LED based, you will require a power supply that is quite efficient and make sure the circuit consumes low power. A joule thief can be a solution. Only …
“Today I am back with another project called DIY ULTRA CHEAP COMBINATION LOCK CIRCUIT. A combination lock is a type of locking device in which a sequence of numbers or symbols is used to open the lock. There are two …