After adding in a display, a couple of buttons, and a more complex program, the self contained Arduino powered Time-Lapse Controller was born!
I have tried to make the instructions as clear and user-friendly as possible, but if any questions arise, feel free to ask!
Step 1: Parts
- 7 Segment Display
- 220 Ohm Resistor x2
- 10K Ohm Resistor x2
- 470 Ohm Resistor
- Hookup wire
- NPN Transistor
- 2/32 Phono-jack
- hookup wire
- mounting surface (i.e. perfboard, breadboard, PCB)
Step 2: Wiring up the 7 Segment Display
After a bit of research, I found some sample code for a 7 segment display here. Taking a closer look at the first example, I noticed that each segment of the display need to be wired to a sequential pin on the Arduino. In the case of the example, pins 2-9 with pin 2 being the "dot" on the display.
Keep in mind that each display's pinout is different and may differ from the display I used (from Radioshack), make sure to pay attention to its datasheet.
- Wire both GND pins of the display to GND on the Arduino with a 220 Ohm resistors
- Wire the display pins to sequential Arduino pins. In my case I used pins 3-9
- Wire the "dot" pin to the Arduino. For me, pin 2
Step 3: Wiring up the Buttons
Using this as a reference, I wired up the two buttons
Follow the pictures in the above link and the one enclosed and it should be pretty easy to figure out.
- using 10K Ohm resistors and hookup wire I connected the buttons to pins 11 and 12.