This instructable will show you how to interface a 16-key keypad to your AVR microcontroller and read the key when a key is pressed. I’ll introduce the keypad first, then the 74HC922 16-key decoder IC as a pin-saving mechanism, then finally how to take the data and massage it so that you get the correct […]
16-key Keypad Decoding with an AVR MCU Read More »
What do you do with an old phone, a microcontroller and lots of time? You hook the old phone’s LCD screen to the computer USB of course! In this project we’re going to communicate with a Nokia 3310 LCD display over USB! How are we going to do that? We’re going to connect the LCD
Connecting Nokia 3310 LCD to USB using AVR 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 »
The reason i mainly built this project was to program the ATTiny45, which has a 8 pin connection, while my USBtinyISP (from Ladyada) only has a 10 pin and 6 pin connection. After snooping around the internet for about 3-4 weeks i found nothing what i really found was that i needed more stuff, so
ISP 6 pin to 8 Pin Socket Using ATTiny45 Read More »
So you wana learn how to programme a micro controller? This tutorial has been designed as a next step, following the fantastic tutorial ‘Ghetto Programming: Getting started with AVR microprocessor on the cheap.’ by The Real Elliot link you should read this before progressing onto this next step. Today my friends we are going to
English version available at the bottom Se enseñara paso a paso como instalar los controladores (drivers) necesarios para el correcto funcionamiento del programador USBasp para microcontroladores AVR. Primero, mencionaremos algunas consideraciones para evitar fallos por usos indebidos del programador. También se mencionará el protocolo y pines que debe tener en cuenta para poder programar su
This instructable will show you how to read the number on a binary pushwheel or thumbwheel switch using LED’s or an AVR microcontroller (I’m using an ATmega328p but this can be adapted for any AVR or probably another microcontroller of your choice). Multiple thumbwheel switches can be strung together to make an electronic combination lock,
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
AVR LCD Namebadge Using ATtiny2313 Read More »
The Arduino — and AVRs in general — have a wide range of power supply options ranging from around 1.8V to 5.5V. The choice of voltage is usually determined by the desired clock speed or power consumption requirements. The Arduino and its many variants have power jacks that allow connections from big, clunky “wall warts.”
Power Your Arduino From Your Car using AVR microcontroller Read More »
This tutorial will step you through the process of creating a set of controllable and configurable traffic lights whilst also teaching you the basics of Arduino. Some knowledge is needed and I highly recommend reading and following through on most if not all of the pages of the following document, created by the wonderful Arduino.cc
Making a set of traffic lights Using Arduino Read More »
