Posts Tagged ‘control’
Using the parallel port (and a little circuit) to control my light switch !
Hello YouTube.
Today I made something very cool.
I made a circuit wich uses the Parallel port (aka printer port) to control a relais.
Nothing very special here, but with the relais I can power a motor, wich pulls a string, WICH is connected to the light switch. Result ?
Clicking a button on my (old) PC triggers the relais so the motor pulls the string SO my lights go on 
Duration : 0:2:3
Arduino Controlled Light switch
I’ve set up a servo to press the light-switch in my room in halls at the University of Manchester. It’s connected to a number of switches and also the internet (so I can control them from my phone!).
Duration : 0:1:39
Configuring I/O in VTScada – Digital Output Tags
http://www.trihedral.com VTScada Technical Writer / Instructor Andrew Harvie compares digital output tags and digital control tags. He then demonstrates how to add them to a VTScada application screen using the Set Value Button, Set Value Hotbox, and momentary push button drawing methods.
For: Developers
Level: Beginner
Version: VTS 9.1
TOPICS:
~ Digital Output tags
~ Digital control tags
~ Set Value Button drawing method
~ Set Value Hotbox drawing method
~ Momentary push button drawing method
Online Developer’s Guide
http://www.trihedral.com/vtshelp/developers_guide_9-1
Duration : 0:7:26
Spinning VTS How-to: Creating Digital Outputs
www.trihedral.com VTS Technical Writer Instructor Andrew Harvie compares digital output tags, digital control tags. He then demonstrates how to add them to a VTS application screen using the Set Value Button, Set Value Hotbox, and momentary push button drawing methods. For: Developers Level: Beginner Version: VTS 9.1 TOPICS: ~ Digital Output tags ~ Digital control tags ~ Set Value Button drawing method ~ Set Value Hotbox drawing method ~ Momentary push button drawing method Online … VTS …
Duration : 0:7:32
Programmable timer remote for Canon EOS cameras
My first “serious” project (besides playing with lights, as my friend Alan put it) is almost done.
This is going to be a configurable remote for my Canon EOS 350D / Digital Rebel XT (and possibly for all the cameras of that series). The shutter is closed when two lines of the 2.5 mm stereo jack are shorted; this is achieved by using the relay.
My remote has two modes of operation, chosen through a simple deviator used as a switch: time lapse and bulb.
In time lapse mode, it counts down to the specified interval and quickly closes the relay switch to fire the camera’s shutter, then starts counting again. In bulb mode, it immediately closes the relay switch and starts counting; when the counter reaches zero, the relay switch is opened (the camera’s shutter opens too) and it goes back to idle mode.
The interval is defined in seconds and can be any multiple of 5 between 5 and 995 (that’s over 16 and half minutes, and it’s close to the camera B mode limit of 999 seconds). It is changed through two buttons (UP and DOWN).
The third button, ENABLE, starts or stops the counter; I had originally thought about using a deviator switch for it, but I realized that the counter should have been stoppable by software too, therefore a push-button proved most useful for that.
In this video, the shutter control is replaced by a green LED as I currently lack a wire long enough for my needs. I will solder it to the connector tomorrow, and test it in the field. Hopefully my camera won’t be fried by it. 
The software takes 1262 bytes.
Equipment used:
1 x ATmega8
1 x 5V-operated relay
3 x 74HC595 (8-bit serial-in parallel-out shift register with latches)
3 x 7-segment C.A. displays
5 x 1N4148 diodes (4 for the buttons/switch, 1 as a protection for the relay coil)
3 x 3mm red LEDs
1 x 7805 (voltage regulator)
1 x BC239B (NPN)
1 x 100 nF (smoothing)
1 x 1 µF (deounce)
1 x 1 k? (debounce)
1 x 2.2 k? (NPN base)
6 x 470 ? (LEDs and LED displays)
3 x momentary push buttons
1 x deviator (as switch)
1 x switch (main)
Duration : 0:1:48