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  • Breadboard

    24-Jan-2014 3:55pm
    ATMega1284 and Resistor Networks

    We've been selling many different AVR microcontrollers for some time. This week we add the ATMEGA1284 to our lineup.

    The ATMEGA1284 is quite impressive with 128K of flash and 16K of RAM. It comes in a 40 pin through-hole PDIP package, has the same general pinout as the ATMEGA32A but runs faster and has more features. Like the ATMEGA32A, in can be used with our 40 Pin AVR Development Board.

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    14-May-2013 9:14pm
    New products for May 2013

    It's always exciting to add new products and this month is no exception

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    19-Sep-2011 6:35am
    8 Breadboard Hacks

    A few hacks to make bread boarding easier...

    1. Hacking the power buses

    The power buses on a breadboard are constructed in multiple pieces. To get continuity down the length of the bus continue reading...

    3-Apr-2011 1:41pm
    Analogue to Digital Conversion Interrupts on an ATmega168

    Back in February, we wrote a post on Analogue to Digital Conversion. Many people mentioned that it was a bit light and they would like a more advanced tutorial. Well here it is...

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    13-Feb-2011 8:44am
    Analogue to Digital Conversion on an ATmega168

    Many AVR microcontrollers are capable of doing Analogue to Digital Conversion. The ATmega168 has 6 ports (8 ports on the SMD packages) that can be used for analogue input. This tutorial shows you how.

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    9-Jan-2011 11:32am
    Reading and writing EEPROM

    EEPROM (Electrically Erasable Programmable Read Only Memory) Is non-volatile memory, meaning it persists after power is removed. The ATmega168 microcontroller has 512 bytes of EEPROM which can be used to store system parameters and small amounts of data. This tutorial shows you how to read and write EEPROM.
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    23-Oct-2010 6:40am

    Atmega168 Experimenter's Kit

    Recently a friend asked me, "What do I buy if I'm just starting out with embedded systems and want to learn?". I told him a breadboard solution would be best and started rattling off all the bits that he would need. Then I got thinking, what if we made this a kit? So here it is...

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    4-Sep-2010 3:53pm

    This tutorial will teach you how to use external and pin change interrupts on an AVR microcontroller. I will be using an ATmega168. The general principles apply to other AVR microcontrollers, but the specific vary greatly.

    External interrupts on an atmega168 microcontroller

    What is an Interrupt?

    Imagine your are sitting at your computer, reading this post. The phone rings and you answer it. After you hang up the phone (it was a telemarketer trying to sell you a timeshare), you get back to the awesomeness of the post, picking up where you left off.

    Microcontroller interrupts are just like that.

    • The microcontroller is executing it's main routine
    • An event occurs, which raises an interrupt
    • The Interrupt Service Routine (ISR) is run
    • On termination of the ISR, the microcontroller returns to it's main routine, at the point where it left off

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    30-Jun-2010 9:25am
    Introduction to I/O registers

    This tutorial will teach you how to use the I/O ports on an AVR microcontroller. I will be using an Atmega8 but the general principles apply to any AVR microcontroller.

    Introduction

    The Atmega8 has 23 I/O ports which are organised into 3 groups:

    • Port B (PB0 to PB7)
    • Port C (PC0 to PC6)
    • Port D (PD0 to PD7)

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    28-May-2010 9:23am

    This tutorial shows you how to control 16 LEDs with just 3 control lines. We do this by daisy chaining 74HC595 shift registers

    Image

    The 74HC595 shift register has an 8 bit storage register and an 8 bit shift register. Data is written to the shift register serially, then latched onto the storage register. The storage register then controls 8 output lines. continue reading...