Intervaluino Plus Version 1.0
Intervaluino Plus is a small configurable intervalometer for your DSLR camera. You can use an Arduino board as soon as it is compatible with Arduino Uno. I used a RBBB board and also tested it with an Arduino Duemilanove.
The name of Intervaluino Plus comes from the concept of extending the capabilities of the previous Arduino intervalometer called Intervaluino made by Timm Suess.
Intervaluino Plus is configurable via 4 buttons: left, right, up and down and comes with a 4 digit 7 segment serial display Sparfunk COM-0976X that only needs one line to be controlled. Left and right buttons are used to change the menu option whereas up and down change the value of the options themselves.
When Intervaluino Plus is switched on it asks how many pictures have to be taken by displaying the text "PICS". We can then use up and down to increase or decrease the amount from 1 picture up to 9999. If you are thinking that you don’t want to push the botton 9999 times you are as lazy as me So I implemented a "fast forwad" that makes the counter go faster if you leave the button pushed for some time. Also to know that you are on the first option the first dot down on the right of the display will remain on.
Once we have selected the amount of pictures to take we can push the left button to go to the next menu option, which is called "PERI". It represents the period of time we want between every picture. We can configure it from 1 second up to 9999. This time you will see that the second dot is on, representing that we are changing the second option.
We are now ready to take pictures! Just push the left botton once more and the display will show "PHOT" and the Intervaluino Plus will start taking pictures. Once finished the job Intervaluino Plus will go back to the first option again.
There is a "hidden" feature so you can adjust the display brightness on power up. If you turn on the Intervaluino Plus while you maintain pushed the up button the display will bright at the highest level whereas maintaining the down button will make the display barely bright. Use this option to safe battery or if the light conditions prevent you from reading clearly the digits.
A schema and a breadboard diagram can be found in the repository. Also a .FZZ file (used by Fritzing) is available.
+--------------------+-5V
| |
+--+--+ ARDUINO |
| 5V | |
| | S4 |
| D8 |---------+---/ --+
| GND |---<10k>-+ |
| | S3 |
| D7 |---------+---/ --+
| GND |---<10k>-+ |
| | S2 |
| D6 |---------+---/ --+
| GND |---<10k>-+ |
| | S1 |
| D5 |---------+---/ --+
| GND |---<10k>-+ 4N35 /---O--\/ +-+
| | +----+ / | |
| D9 |---<330>---------------------|1 5|---/ --O------/\ | |
| | COM-0976X | | | |
| | +-----+ +--|2 4|---------O----------+-+
| D3 |---------------| RX | | +----+ STEREO FEMALE 2.5mm
| | 5V--| VCC | |
| | | GND | |
| GND | +--+--+ |
+-----+ | |
|---------------------+-------+
===
Ground
The Arduino board is basicaly connected like this:
- D3 -> 4 digit 7 segment serial display RX.
- D5 -> Right push switch.
- D6 -> Left push switch.
- D7 -> Up push switch.
- D8 -> Down push switch.
- D9 -> Optocoupler.
Connect all the push switches to 5 volts and install 10K ohm pull-down resistors on D5, D6, D7 and D8.
You must install a 330 ohm resistor in series on D9 for the optocoupler.
- 1x Arduino compatible board, a RBBB for example.
- 1x Sparfunk COM-0976X 4 digit 7 segment serial display.
- 1x 4n35 or 4n25 optocoupler.
- 4x push switches.
- 4x 10KΩ resistors.
- 1x 330Ω resistor.
- 1x connector for your camera cable. Female 2.5mm stereo jack for Canon DSLR.
- Change the limit of 9999 pictures and 9999 maximun seconds between every picture.
- A "BULB" option so the shutter stays open for a period of time configured in the options.
- Texts longer than 4 characters that will scroll on the display.
- Add another button to use it as an "enter" key.
See the LICENSE file.