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1  Using Arduino / Project Guidance / Transmitting Webcam Stream via RF on: April 09, 2012, 07:06:10 am
I have a webcam and I have an RF transmitter/receiver pair (0v/5v, same as Arduino).

When thinking about sending the stream, my first thought was using an Arduino with video decoding capabilities, etc. BUT:

If I hook the webcam to a breakout board to convert the USB voltages to 0v/5v, send that to the receiver where it will be changed back into USB voltages to be sent straight to a computer, will this theoretically work?



Although this looks like I'm eliminating the need for an Arduino, it will still be an important part of the project, just not in the sending/receiving of webcam data.
2  Using Arduino / Sensors / Ultrasonic Emitters and Transducers: on: January 29, 2012, 09:43:17 am
I bought one of these:

http://www.maplin.co.uk/ultrasonic-transmitter-40khz-16mm-open-591658

and one of these:

http://www.maplin.co.uk/ultrasonic-receiver-40khz-16mm-open-591659

and I am basically getting an analog reading from the receiver and turning the transmitter on and off using a delay.


I have 2 arduinos, the transmitter arduino has one side of the ultrasonic transmitter connected to pin 12 and the other to ground.

The receiver arduino has one side connected to analog pin 1 and the other to ground.


The result I get from the serial bus is a seemingly random oscillation of numbers from 1000 down to about 40. It will start at a bit over 900 and work its way down to about 40 then go back up.


I have a feeling there are several things I am doing wrong so any help is appreciated!


-Jack
3  Topics / Device Hacking / Hacking a 'distance estimator': on: January 29, 2012, 09:34:57 am
I have one of these:

http://www.robertdyas.co.uk/P~138092~Draper-Stud-Detector-and-Distance-Estimator

And I was debating the feasibility of opening it up and trying to get an output from it to use in an arduino program, if you've done anything like this or know anything about how such devices work I'd be grateful for the help!


-Jack
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