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A Lithium Battery Charger with Load Sharing

You may have found that charging your project’s lithium battery while at the same time trying to use your circuit didn’t quite workout, with problems like the circuit not turning on and the battery...


IC Samples

Everyone likes free stuff. I thought I’d share my recent success of getting a few free chip samples: Atmel 3 day delivery from US to UK via DHL WW Express ATmega328P-AU x3 (Your favorite mic...


AVRDUDESS – A GUI for AVRDUDE

AVRDUDESS is a GUI for AVRDUDE, a tool for programming Atmel microcontrollers. Some key features: Supports all programmers and MCUs that AVRDUDE supports Supports presets, allowing you to ...


Millisecond tracking library for AVR

This is a lightweight library for keeping track of time to millisecond accuracy, the data type for storing milliseconds can be easily configured, it supports ‘unsigned long long’ which can keep tra...


Bluetooth Net Monitor

A newer version of the Bluetooth network monitor can be read about here, but I’d recommend carrying on reading this post first. Whenever I want to see why a download is going a little slow or gett...


Getting Bluetooth modules talking to each other

Before we start, please note that most Apple devices don’t support the virtual serial link profile that these modules use. A really easy method of making your projects wireless is to use serial Bl...


nRF905 Radio Library for AVR and Arduino

The nRF905 is a radio transceiver IC similar to the well known nRF24L01, but operates at 433/898/915MHz instead of 2.4GHz, has a much longer range and a few extra IO pins. However, the nRF905 data ...


LCD Image Viewer

This is a quick project I made to try out a 1.8″ colour LCD display from Ebay, the microcontroller code is very simple, after initializing the display it just waits for serial data and sends it str...


CPU Usage LEDs

This project has now become the AVR USB RGB LED Controller project. The CPU Usage LEDs host program can be found in the examples directory. Having seen a few circuits around the web that light up ...


AVR microcontroller based PWM fan controllers

If you’d like a fan controller kit please email me at blog@zakkemble.net Kit: £10 Post: £2 if you’re in the UK, otherwise £4 Microcontroller will come programmed and ready to go. Only available whi...