Posts Tagged ‘digital’
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
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
FENIX Flashlight LD20 CREE Q5 LED…
Fenix LD20…
https://www.fenix-store.com/product_info.php?products_id=362
Features:
Utilizes a Premium (Q5) Cree 7090 XR-E LED with a life of 50,000 hours
Two modes of output, selected by turning the bezel (patented)
General Mode: 9 lumens (71hrs) – 47 lumens (13hrs) – 94 lumens (5hrs) – SOS
Turbo Mode: 180 lumens (2hrs) – Strobe
36 days of survival use (2 continuous hours per day on the lowest setting)
Digitally Regulated for Constant Brightness
Uses two 1.5V AA ( Alkaline, NiMH, Lithium ) batteries (not included), inexpensive and widely available
150mm (L) x 21.5 mm (D)
Removable titanium-coated steel pocket clip
Made of T6 aircraft grade aluminum
Durable Type III hard anodized finish
56-gram (or 2.0 oz) weight (excluding batteries)
Waterproof to IPX-8 Standards
Toughened ultra clear glass lens with AR coating
Push-button tail cap switch
Capable of standing up securely on a flat surface to serve as a candle
Batteries not included
Includes a holster, a lanyard, two spare o-rings, and a rubber switch boot
Operation
Fully press to switch on and turn the bezel to select the General Mode or the Turbo Mode. A soft-press anytime while the light is on will change the brightness levels of a certain mode. Keep the light off for over 2 seconds, the light will turn completely off, and the regulative circuit will be restored.
MSRP: $79.00
[ignore this]
THE USE OF ANY COPYRIGHTED MATERIAL IS USED UNDER THE GUIDELINES OF “FAIR USE” IN TITLE 17 § 107 OF THE UNITED STATES CODE. SUCH MATERIAL REMAINS THE COPYRIGHT OF THE ORIGINAL HOLDER AND IS USED HERE FOR THE PURPOSES OF EDUCATION, COMPARISON, AND CRITICISM ONLY. NO INFRINGEMENT OF COPYRIGHT IS INTENDED.
Duration : 0:2:57
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