Slider

This repo contains the source code which is compiled and run on the Arduino slider.ino as well as the HTML, CSS, JS used to build the interface (which is stored on the SD card.)

I have written up a port detailing how I motorised the slider.

Update Yun

Go to: http://arduino.cc/en/Tutorial/YunSysupgrade

Install open SSH (for sFTP)

opkg update
opkg install openssh-sftp-server

Install

I have an Arduino Yun with an Adafruit Motor Shield V2 connected to a stepper motor (200 steps/rev, 12V 350mA) which moves the slider dolly via a belt drive.

I have a wire connected to the dSLR remote trigger port, between ground and pin 7.

REST Endpoints

The following endpoints are available:

• /arduino/run/1 start the slider
• /arduino/run/0 stop the slider
• /arduino/reset/1 reset the slider position
• /arduino/distance/400 set the distance to move the slider in mm
• /arduino/delay/400 set the shutter delay in ms
• /arduino/steps/3 set the number of stepper steps per move

JavaScript

There is a sendRequest method in the JavaScript which allows you to send a command such as:

sendRequest('run/1', function (response) {
    console.log(response); // This is the raw text output from the Yun
});

The raw text output from the Yun is parsed in the JavaScript using the value method, this simply uses regex and formats the value appropriately.

Workflow

The workflow to start a timelapse is:

• Connect to the Arduino access point
• Browse to http://arduino.local/sd/slider
• Configure the slider options
• Press start

Developed by Joel Vardy.