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April 9, 2008
about 2 years ago
Yes, their stuff is expensive, but it is fairly durable. Kids are not kind to hardware and equipment.
Vernier publishes a How-to-make-your-own photo gate circuit:
Other build-your-owns here:
It is great that that part is 1/10 the price, but it is no substitute. You need a separate emitter & detector. These photo gates are big enough to pass your hand through. Or a variety of cars and buggies and balls used in physics classrooms. And you can use a remote laser pointer and make the gate wide enough for an elephant to walk through.
about 5 years ago
Shazbat … no answer here after 9 months. And this is exactly what I’d love to know.
By any chance did you get one? Have you tried it outdoors?
about 6 years ago
Dude, gimmee a pull of whatever you’re smoking.
The SI4735 is a radio on a chip, not a front end on a chip. There are no I/Q outputs on the chip. Even the audio does not get fed to the Arduino. All the Arduino does is command the chip to the mode & frequency of choice.
about 6 years ago
By “tight fit”, you mean gently tug every leg of the IC out to its extreme reach and hand solder with a tiny soldering iron. Personally I bet less than 1 in 10 is successful attempting this.
Incorrect. The product you point out is for a much bigger IC than the package Sparkfun sells the SI4735 in. Read about people’s experience with the BOB-00500 here: http://www.sparkfun.com/products/10227
Edit: Look at the size of the center IC on this shield. That is the SI4735. Look at the chip above and left of that. That is an SSOP size.
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