As I promised in some forums earlier I start to build a new controller for high speed photography. My old controller works fine. I try to reproduce that. When I built the first one I did not document anything. I did lots of things ad hock. All I found were some simple hand drawings.
I already ordered an Arduino Diecimila clone called Seeeduino.
You can find more info on it here.
The Arduino Diecimila hardware details are here.
Summary
| Microcontroller | ATmega168 |
| Operating Voltage | 5V |
| Input Voltage (recommended) | 7-12 V |
| Input Voltage (limits) | 6-20 V |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 40 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 16 KB (of which 2 KB used by bootloader) |
| SRAM | 1 KB |
| EEPROM | 512 bytes |
| Clock Speed | 16 MHz |
I’d like to attach the followings to it:
- 4 pushbuttons inputs: UP, DOWN, SET, RESET that takes 4 digital I/O pins.
- A key chain laser output that takes 1 digital I/O pin.
- A laser detector input that takes 1 digital I/O pin.
- A flash trigger output that takes 1 digital I/O pin.
- A camera shutter output that takes 1 digital I/O pin.
- A dripping device output that takes 1 digital I/O pin.
- A two line LCD screen output that takes 7 + 1 digital I/O pins.
- Two potentiometers for analog input they take 2 analog input pins.
- A microphone which take 1 analog input pin.
That is all together 17 digital I/O pins. The Diecimila has only 14. Fortunately it has 6 analog inputs and I need only three so I can use the other three for digital input.
In the next post I start drawing the circuits which I will attach to the pins.
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