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Makers and Making: IR TV remote Bazooka
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Apr 28th 2008
So a few years ago I built a foil lined TV remote bazooka.
I added a few IR LEDs into a little foil dish reflector at the back of the 4 foot cardboard tube and ran wires to the IR LED at the end of the remote.
I changed out the AAA cells for C cells and taped the thing together...IT WORKED!!
I could literally hit "LEARN" on the cheap RCA learning remote and cycle thru codes till I got a response from TVs perhaps 100 feet away inside buildings!
I looked a little crazy standing outside with the thing but it was really fun!
Anyway you could see how such a thing would be entertaining.
So I'm working on TV Bazooka mark Two.
RCA learning remote
35 IR LED array
reflector part from a truck headlight
and a battery pack to run the thing.
Sadly I need some help, I know if I try to run all that current thru the remote I'll torch it.
I want to use the pulse going to the remote's single IR LED to run the big array.
I need some instructions on how to rig some sort of transistor between them to switch on and off the array.
Any help in here?
I added a few IR LEDs into a little foil dish reflector at the back of the 4 foot cardboard tube and ran wires to the IR LED at the end of the remote.
I changed out the AAA cells for C cells and taped the thing together...IT WORKED!!
I could literally hit "LEARN" on the cheap RCA learning remote and cycle thru codes till I got a response from TVs perhaps 100 feet away inside buildings!
I looked a little crazy standing outside with the thing but it was really fun!
Anyway you could see how such a thing would be entertaining.
So I'm working on TV Bazooka mark Two.
RCA learning remote
35 IR LED array
reflector part from a truck headlight
and a battery pack to run the thing.
Sadly I need some help, I know if I try to run all that current thru the remote I'll torch it.
I want to use the pulse going to the remote's single IR LED to run the big array.
I need some instructions on how to rig some sort of transistor between them to switch on and off the array.
Any help in here?
Apr 29th 2008 edited
The easiest way is to use an n-channel mosfet. Make sure it is rated for the specified current, and you are ready to go.
Gate: RCA learning remote
Source: Ground
Drain: Current-Limiting Resistor
(Other side of resistor goes to the LED array).
The IRF510 from RadioShack can do the trick if you are using less than 3 amps.
Edit: You might need a p-fet. Which way did you have your old one set up? Were the LED's wired directly to ground or to power?
Gate: RCA learning remote
Source: Ground
Drain: Current-Limiting Resistor
(Other side of resistor goes to the LED array).
The IRF510 from RadioShack can do the trick if you are using less than 3 amps.
Edit: You might need a p-fet. Which way did you have your old one set up? Were the LED's wired directly to ground or to power?
Apr 30th 2008
Please take a look here...
http://www.aaroncake.net/forum/topic.asp?TOPIC_ID=7477
Things have evolved a bit, there's a crude drawing and some parts listed,
Thanks very much for the input
Peter
http://www.aaroncake.net/forum/topic.asp?TOPIC_ID=7477
Things have evolved a bit, there's a crude drawing and some parts listed,
Thanks very much for the input
Peter
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