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SMT160 based Temperature indicator

There are lot of temperature sensors both with analog & digital outputs. This project gives you an another temperature indicator which has been done with a digital sensor SMT160. Although it is a digital sensor it does not gives out the temperature directly. The output is duty cycled modulated. The sensor can measure temperature from […]

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Transform a Cheap RC Transmitter With Custom Firmware

Transform a cheap RC Transmitter with Custom Firmware using ATMEGA64 Microcontroller

The Turnigy 9x is a cheap Chinese radio transmitter widely sold by hobby king and other retailers under a variety of names. This is a computerized radio transmitter and is already a great deal for the price ($53 currently) and pretty capable if you can figure out how to use the stock firmware. The microcontroller

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Using ATMega328 Microcontroller Custom Tron Disc Mod

In this Instructable, I cover modding the store-bought Deluxe Identity Disc to an upgraded version with 64 leds, controlled by an AVR MCU. The upgraded version is costume-ready and would be an excellent addition to your Tron costume – it’ll also look great on your desk/dresser/etc. My 7 year old daughter watched Tron:Legacy with me

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Starry Ceiling 1

Starry Ceiling for Kids Bedroom Using AT90S8538 microcontroller

When my little girl was born I wanted to make her a special night light for in her room. I made her a ceiling light with twinkling stars. It is made up of a piece of custom wood with 100 LEDs mounted in it. An AVR AT90S8538 micro controller runs a bascom program that produces

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Using max7219 microcontroller Build an electronic score keeper/storage box

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

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Using AtTiny2313 microcontroller Build an electronic polyhedral die

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

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How to drive a lot of LEDs from a few microcontroller pins

How to drive a lot of LEDs from a few microcontroller pins.

Using the fact that many microcontroller pins have three states (+V, GND, or “high impedence”). You can drive N*(N-1) LEDs from N pins. So the little 8 pin microcontroller like a PIC12Fxxx or an ATtiny11 can drive 20 LEDs on its five available output pins, and still have one pin left for some kind of

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