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Uploaded byTristan Roddis
Introduction to programming AVR microcontrollers
The document discusses affordable physical computing using AVR microcontrollers which can be programmed in-system and used in various applications from cars to consumer electronics. It highlights inputs from sensors and outputs to actuators, along with inexpensive programming solutions and examples of projects. Additionally, it mentions the Arduino platform as a user-friendly option for hobbyists and provides links to resources and examples of creations.
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Introduction to programming AVR microcontrollers
- 1. Do you wantchips with that? Physical Computing on the cheap
- 2. What? + + =
- 3. AVR microcontrollers Embeddedcomputer (8-bit RISC, up to 20MIPS, with ADC, PWM, timers, EEPROM...) 1k to 32Mb programme memory 80p to £4.50 each Can be programmed in-system using C Hobbyist-friendly format (DIL) Used in cars, microwaves, traffic signals... and the Arduino
- 4. Why? Physical computingInputs (sensors) sound, light, motion (switches, dials, flex, pressure, accelerometer, IR/ultrasound ranging), serial input from computer Outputs (actuators) sound, light (LEDs – digital and 'analog'), motion (motors, servos), other devices (using relays), serial output to computer
- 5. How? Computer (Linux,Mac, Windows) AVR-GCC compiler AVRdude programmer Cable Breadboard or socket AVR chip
- 6. How cheap? £3:DIY parallel cable (search Instructables for 'ghetto programming') £10: DIY serial cable (adafruit.com) £15: DIY USB cable (adafruit.com) £25: pre-built USB (Rapid electronics)
- 7. Demo Switch toa laptop with a serial port...
- 8.
- 9. Programmable LED Inventedby Alex Weber http://www.instructables.com/id/Programmable-LED/
- 10. Micro text displayInvented by Windell Oskay (Evil Mad Scientist Laboratories) http://www.evilmadscientist.com/article.php/microreader2
- 11. MiniPOV Invented byLimor Fried http://www.ladyada.net/make/minipov2/
- 12. Multimode mood candleInvented by yours truly http://www.instructables.com/member/tristanr/ (hassle me if it's not there soon: [email_address] )
- 13. Aside: the ArduinoOpen source hardware in a variety of shapes and sizes Uses the ATMEGA168 chip Easier to programme (Wiring vs C) Adds: - headers for all pins - voltage regulator - status LEDs - USB-serial converter
- 14. Links Instructables - http://www.instructables.com/ Make Magazine - http://www.makezine.com/ Lada Ada - http://www.ladyada.net/make/ Evil Mad Scientist Laboratories - http://www.evilmadscientist.com/ Atmel - http://www.atmel.com/products/avr/ AVR Freaks - http://www.avrfreaks.net/
- 15. P.S. If anybodywould like to share postage on buying some business-card sized prototype boards, please contact me: [email_address] http://www.evilmadscientist.com/article.php/card