Microcontrollers (MCUs) are fantastic little ICs that give an extra element of versatility to your electronics, robotics or other project. But they’re really not much use on their own. To function, all MCUs need some sort of support components, and a board to live on — one example of course being the famous Arduino. These […]
Augmenting a Microcontroller using AVR Read More »
after making a usbtiny isp programmer and using it for 6 months, i was looking at making another one for carrying around. i like the simplicy of the usbtiny isp design but would like to make it even smaller and take less parts. one thing in the original design that i want to change is
VUSBTiny AVR SPI Programmer Using ATtiny85 Read More »
video Direction Aware Messaging LED Spin Top We recently built a LED spinning top with message display. Its an improved version of a similar top published by Elektor in their December 2008 issue. The Elektor top can be spun only in one direction. The synchronization required to print message on the LEDs arranged along the
Direction Aware Messaging LED Spin Top Read More »
Did you make a mistake while programming fusebits, or purposely disabled reset pin (RSTDISBL) or ISP programming (SPIEN)? No need to buy or make inconvenient HV programmer only for unlock couple of Tiny AVR’s. This Attiny fusebit HV doctor will cure your dead tiny microcontrollers, by restoring all fusebits to factory settings – nice and
Repair dead AVR's – Attiny fusebit doctor (HVSP) Read More »
Have you ever been chugging away at a project(s) and the project keeps growing and growing, while you add more things to it (we call that a Feaping Creaturism)? On a recent project, I was building a frequency meter and added a five function signal generator/frequency synthesizer. I soon wound up with more switches than
How to Read Many Switches with One MCU Pin Read More »
This is a business card that will type out some text when you plug it into a USB port. It uses a ATtiny85 microcontroller with V-USB based code to emulate a keyboard. The typing is triggered by the CAPS LOCK status LEDs being toggled 3 times. This instructable will focus on using CadSoft EAGLE to
USB PCB Business Card Using ATtiny85 Microcontroller Read More »
The instruction manual for each of the MANY munchkin series of card games always includes a phrase like “you will need a 10 sided die for each player or some other device to keep score.” 10 sided dice are not hard to find in my house, but I took this as a challenge to make
Using max7219 microcontroller Build an electronic score keeper/storage box Read More »
Dice are fun. Polyhedral dice used in D & D are even more fun, particularly in big handfuls of different sizes. But a handful isn’t always practical. Ever since I saw the dragon bone electronic die wand advertised in the back pages of Dragon magazine when I was a kid, I wanted an electronic device
Using AtTiny2313 microcontroller Build an electronic polyhedral die Read More »
Instructables author extraordinaire Randofo created a great programming shield to use your Arduino to program 8 pin ATTINY processors. He was even generous enough to give 50 copies of it out to people who authored instructables using AVR processors. It works great on brand new ATTINYs and any chip that is programmed to use it’s Internal clock.
Using the 8Pin ATTINY programming shield with an external clock Read More »
This project is used to measure the distance using ultrasonic sensors. The ultrasonic signal passes through the atmosphere to a barrier, which we want to measure the distance. Part of this signal is reflected and travels back to the receiver. The time delay between sending and receiving signals are then determined by distance barriers. The
Ultrasonic range finder using ATMega8515 Read More »
