Difference between revisions of "User:Ctag/storagesign"
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Revision as of 15:32, 21 February 2016
Contents
[hide]Overview
I love working with microcontrollers, and have an interest in low-power things. To get some more practice working with atmega328's I'm going to build a small LED matrix that will label my member storage at the shop.
To begin I'll write the code as an Arduino sketch, then pivot pieces to more traditional C firmware as I learn about them.
Parts List
- Sure Electronics 32x8 LED Matrix
- I'm pretty sure the LED boards on this thing can handle both red and green, but it's not wired up to work :-/
- Can output 16 levels of PWM based brightness. Need to investigate library to see if individual pixels can be set.
- Need to look at what can be merged between the Adafruit library and the one I'm using.
- HC SR501 PIR sensor
- Detects human activity by the infrared we emit.
- Outputs 3.3V high for detected movement. Ground for standby.
- More information
- ATmega328P
- Breadboarding supplies
- 16MHz crystal
- 2x 22pF Capacitors
References
Libraries
Interrupts
nongnu AVR interrupts guide Washington.edu interrupts&timers guide Arduino interrupts guide Another Arduino interrupts guide