So, you’re going to a conference/meetup/nerdfest and you want to do something that sets you apart from normal people. An LCD namebadge powered by an ATtiny2313 is a great way to do that. This is a general purpose LCD display unit powered by a 9V battery and a simple voltage regulator circuit (the same 7805 circuit you see absolutely everywhere). It’s no-frills, but …
Here’s my instructable for a DIY TiX clock. It is powered by an AVR microcontroller. The display is made up using a piece of reflector grid you find covering office lights, some smoked perspex, a diffuser and a bunch of LED’s. The Idea came from the Tix clocks you can buy at various places on the web, …
DIY TiX Clock using ATMEGA16 AVR microcontroller Read More »
For our ECE 4760 final project, we designed and built a wirelessly programmable digital pace clock with a large format LED display and Android smartphone control and programming. This original design achieves the functionality of commercailly available pace clocks but with an intuitive user interface that goes beyond anything that is available in the current marketplace, all at a small fraction of the cost. The clock …
A Wireless Programmable Pace Clock Using Atmega644 Read More »
In Part 2 of the DNA Melting Lab you will make revisions to allow greater control of your instrument and to reduce the effects of noise. You will add a pulse-width modulation (PWM) heater controller to enable careful control of the heating and cooling rates of the DNA sample. This will allow you to maintain …
DNA Melting Part 2: Lock-in Amplifier and Temperature Control Using Arduino Read More »
First, let me introduce you my project. I made an Alarm clock with extended functionality & thermometer and humiditymeter. Everything started when my friend (who used to bring me some old electronic rubbish and I used to check if there’s not something useful) brought me some cashing register display similar like that. When I first …
With this device you diminish the use of water in your house or work. Instead of waiting to see vapor in the shower to get in, this device help you to know when the water its at the temperature you want and you can instantly enter to the shower. In this way you don’t waste the water …
The Particle Photon is a microcontroller suitable for wearable project’s considering it’s small form factor and that it supports OTA updates. For those of you who do not know what a Particle Photon is it is a tiny microcontroller with on board WiFi (Cypress WiFi chip) and the STM32 ARM Cortex M3 microcontroller, which is ideal for cool …
Particle Photon – Wearable Pulse and Temperature Sensor Using Arduino Read More »
This project started as many of mine usually do, as a honey-do. We have compiled an extensive list of our book and movie collections on our computer at home, but my wife wanted to be able to scan the list from the video store (yes, we still go to the video store). So I created …
This instructable is a basic version of Bley Joel’s (“It’s nine o’clock on a Saturday, the regular crowd shuffles in”) Solar Shield, and it should work for most arduinos. I’ve tested it with SparkFun’s Arduino Pro, and the new Leonardo. Myself and the other Solar Pocketeers* are actually waiting for a new set of PCBs for …
Arduino Solar Shield – A DIY solar source for your projects without waiting for PCBs Read More »
The 74HC595 is an easy and inexpensive (at about 60 cents apiece) way to increase the number of digital out pins on your Arduino. In this tutorial I’ll show you how to drive up to 16 LEDs with one 74HC595 using a technique called multiplexing. In the end, all 16 LEDs will require only three …
