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Wiimote Project » Hardware Support » IR Pens » Electronics 101 - Basics for those who want to make their own IR-Pen.
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Author Topic: Electronics 101 - Basics for those who want to make their own IR-Pen.  (Read 115233 times)
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« Reply #45 on: February 22, 2009, 11:57:45 PM »

I would def go with 940.

I have them available here:



http://stores.shop.ebay.com/Infrared-Pen-Interactive-Whiteboard

if you need them
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« Reply #46 on: March 07, 2009, 01:55:07 AM »

i would buy one of them ir pens if they were sold on amazon.co.uk
i wouldnt want to make a paypal and ebay accounts for 1 thing.

if any1 sells these on amazon.co.uk, reply!
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« Reply #47 on: March 16, 2009, 07:36:39 PM »

Can anyone here describe to me what short and long range is to me, as in how many meters? Is diffusing via the sanding the led method good for short range only, or does it help in every case? I heard that the vishay tsal6400 and vishay tsal5300 are good, but is the 5300 better for short range compared to the 6400? Would diffusing the 5300 make it even better? Which one is most ideal for a sensor bar?
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« Reply #48 on: March 17, 2009, 03:57:36 AM »

boogerlad
Difussing improves long & short range. As it creates a larger more define IR-Blob. What is lost is the reflection value, not an issue for a sensor bar. Either 6400 or 5300 will do your job nicely.

benpaddlejones Smiley
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« Reply #49 on: March 17, 2009, 05:17:23 AM »

from what I've been reading, you say that the 5300 is best for shorter range? Define short range and long range for me please. Also, if i find the 5300 cheaper, i should just get that correct?
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« Reply #50 on: March 17, 2009, 08:24:56 AM »

boogerlad
As a rock climber this reminds me very much of the multiple questions I get from new climbers about the best choice for protection. It depends, (whats available, rock type, weather, expereince, etc)? The problem is far more complex than just a definition of range.

If you really want to argue the merrits you need to consider:
- Level of diffusion
- Surace
- Reflection value
- Angle holding IR-Pen
- Wiimote location
- Battery source
- Rear projection & rear detection
- Body position
- User expereince
- The list goes on

The best advice I can give you is buy both and see which works best for your specific situation. The reality for 99.9% of users is you won't notice a significant difference.

They cost 50 cents each so we are not talking about busting the budget. If you buy from farnell buy both with 1 postage.

It would be nice to say "use TSAL5300 for X setup" and "TSAL6400 fr Y setup" but I honestly can't. If you want a concept of some of the setup options look at: http://www.boonjin.com/smoothboard/index.php?title=IWB_installation_option

I hope this helps (without being of any real help), let me know if I can explain more.

benpaddlejones Smiley

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« Reply #51 on: March 17, 2009, 05:58:32 PM »

thanks for all your help. I know what to do now =)
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« Reply #52 on: March 18, 2009, 01:45:27 AM »

boogerlad
I'd be very keen to here what your experiences are from comparing the two IR-Leds. Perhaps worth putting in the http://www.wiimoteproject.com/ir-pens/tsal5300-v-s-tsal6400/ post.

benpaddlejones Smiley
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« Reply #53 on: September 21, 2009, 03:45:41 PM »

Hi all! First I want to say that this is one wonderful forum,keep up the good work!
My question is about the Ir diode-in my town I can only find     the Vishay  TSUS5402 diode
Here is the datasheet http://www.datasheetcatalog.org/datasheet2/a/0s4cfts7uls54gietlirxr01lkpy.pdf
Is it going to do the job?What do you think?
Thanks in advance for your replies.
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« Reply #54 on: September 21, 2009, 05:08:53 PM »

luiziano
Looks all OK, but i suggest you buy 1-2 and test first. As I found in all my testing of different IR-Leds whats written on the data sheet and what it does are often very different. The vishay TSAL6400 is your safest bet, but f this is all you can get see what happens.

benpaddlejones Smiley
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« Reply #55 on: September 22, 2009, 10:57:26 AM »

Thanks for the answer!And just a last question,I can't understand from the datasheet what is the typical forward voltage of the diode?One time it says it is 1.3 and the next 2.2.Can you help ?
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« Reply #56 on: September 23, 2009, 04:57:05 AM »

luiziano
Vishay updated their data sheet both same beast Smiley

benpaddlejones
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« Reply #57 on: October 21, 2009, 02:09:13 PM »

For those of you who are too lazy to go to the LED calculator page referenced above. Here is the output I got for it for some common voltage levels. This would only be for the TSAL 6400 IR LED, which has a forward volatage of 1.5 Volts and a forward current of 100 mAmp.

For two AA, AAA, C or D batteries, giving about 3 Volts:

Use a 15 ohm / 1/2 watt resistor.

For 3 button cells AG13 or LR44, giving about 4.5 Volts:

Use a 33 ohm / 1 Watt resistor.

For two 3 volt button cells, giving about 6 Volts:

Use a 47 ohm / 1 Watt resistor.

Use this information at your own risk. I believe it to be accurate, but I am not taking responsibility for any losses that may occur through it's use or miss-use.

James.

« Last Edit: November 09, 2009, 11:49:26 PM by shakespeare1212 » Logged

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« Reply #58 on: January 27, 2010, 09:43:25 PM »

This LED looks comparable, what do you think?
http://datasheet.octopart.com/OED-EL-1L2-Lumex-datasheet-164846.pdf

Available at Digikey:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=67-1001-ND
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« Reply #59 on: January 28, 2010, 06:47:22 AM »

Statik
It looks the part, but I have found with many of tehse cheaper IR-leds that the specs and the reality are not quite aligned. Always a case of suck and see.

benpaddlejones Smiley
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