AVR acoustic spectrum analyzer, based on Atmega8 AVR microcontroller, operational amplifier, and few other components. Use any HD44780 compatible LCD or VFD, connect audio signal, and enjoy the effect 🙂 You can build in this into your amplifier, pc, car-audio, or other device. On this moment device support following displays: 16*2, 20*2, 24*2, and 20*4. […]
AVR acoustic spectrum analyzer using Atmega8 microcontroller Read More »
MEMS (Micro-Electro-Mechanical Systems) Accelerometers are in widespread use as tilt-sensors in mobile phones and cameras. Simple accelerometers are available both as ic-chip’s and cheap development pcb-boards. Wireless chips are also affordable and available in assembled circuits, with matched antenna-network and decoupling-caps onboard. Hook both wireless board and accelerometer up to a microcontroller via serial interface
Wireless Accelerometer Controlled rgb-LED’s using atmega168 microcontroller Read More »
This is basically a knockoff of the Hypnocube, instead of being 64 LEDs, thus costing at least $150 to make, I made a smaller version of 8 LEDs for under $30. The result is a 2x2x2 cube where each light is independently controllable. I’m not absolutely sure how many colors you can get from each
Mini RGB Light Cube using AVR microcontroller Read More »
This instructable shows how to control a group of led’s with one microprocessor output. The micro I will be using is an Atmel Attiny2313. Step: 1 Parts and Tools Parts: Attiny2313 (got 5 free samples from Atmel) 20 pin socket Resistors (any size will work, depending on your setup. I will explain later) 5v regulator
Control Anything with one AVR pin using Attiny2313 microcontroller Read More »
This is a simple color sensor using Atmega16 MCU and can sense Red ,Green and Blue color. How it works: the sensor consist from LDR sensor and RGB LED ,so when the object putted on the sensor the light that emitting from RGB LED will reflected from the object to LDR sensor and read it by ADC of ATMEGA16 as
Color Sensor using Atmega16 microcontroller Read More »
After Christmas I was in the situation that my nephew’s birthday celebration came near. I asked him if he had a special on his wish list and he told me that he doesn’t have a wish at all, for the moment. He still had not played with every toy he got for christmas. We decided
Ambient Light Gift Badge using ATTiny13 microcontroller Read More »
Every year the holiday season rolls around and I get stuck on what to give for my friends and family. People always say that it’s better to make the gift yourself than buy it at a store so this year I did just that. The first displays a name or basic image when waved through
3 Easy Holiday Gifts using ATTiny microcontroller Read More »
There are numerous posts on Instructables about how to make a flickering LED candle. This is my version. The project requires the following components: 1. Tiny45 AVR Microcontroller (Tiny13 would also do) 2. 1W Warm white (or yellow) LED 3. Perspex tube 4. AA or AAA size batteries- 4 (alkaline or NiMH) 5. PCB stock
YAFLC (Yet Another Flickering LED Candle) using Tiny45 microcontroller Read More »
Do you have a pile of AA rechargeable batteries in your drawer? Some are old, some are new, but which sets would you bring with your camera on your next trip, and which ones are past their useful life? I like using rechargeable batteries, but I’m certain that some of them are not living up
Rechargeable Battery Capacity Tester using ATMega168 microcontroller Read More »
If you’ve ever wanted to power your Arduino or AVR from a battery for development testing (batteries have different power delivery qualities than, say, transformed AC or even a regulated wall wart in DC) testing but were tired of going through batteries (Hey, I admit I’ve sucked batteries dry in hours because of a slipped-up
Power your Arduino/AVR with a Hand-Cranked Battery using ATmega8 microcontroller Read More »
