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I would like to know if someone has done it or, at least, tested (mathematically,) the idea of, with an appropriate size led-matrix, construct a 'kind' of oscilloscope & for what range of frequencies

Careful guys, you aren't going to want to pot, or goo if you are more technical, the heat sink. It needs to have lots of airflow. James "Jim" M. Geidl, K6JMG No trees were harmed in the sending of

I'm going to second the Arduino (AVR) suggestion. The arduino microcontroller is easy to learn, is open source hardware, has the usb capabilities including an available breakout board, is programmed

I am a code weenie at heart so I may not actuslly DO anything with them. I might just write little samples or copy code projects I find on the Internet. I have used them for small robots, a controller

Hey Yan, "If the motor is OK, then get yourself a PWM controller, pot it in your choise of goo, and have at it. Virtualvillage.com had 30A PWM controllers for soemthing like $20 one time... Here's one

I haven't. I mentioned it.? I really am chopped liver around here. ;-) ===== But still BASIC.? I have no problem with it.? But it seems others might think so. ==== It needs a serial (RS232)

Harold Darter wrote: If the motor is OK, then get yourself a PWM controller, pot it in your choise of goo, and have at it. Virtualvillage.com had 30A PWM controllers for soemthing like $20 one time...

John, I play at robotics and use the mcu for the brains of my robots. Before you buy one at Radio Shack be sure and compare prices on the Internet. James "Jim" M. Geidl, K6JMG No trees were harmed in

In a wet environment, especially where the wet may be (conductive) salt water, that seems entirely reasonable. Proprietary-protective/anti-tamper goo is usually hard epoxy. Reese

smaller ones with world..... All this discussion on the micro controllers sound really neat. I've wanted to try and play with one, and been looking at a couple. Radio Shack had a Basic stamp kit and

Andy, You are correct, the picaxe chips are very nice. Picaxe seems to be making a very conscious thrust into the market. I see a lot more "conversation" about them and most of it is great. This is

Hi Vaclav everyone seems to have forgotten PICAXE.......Really easy to use, very cheap (UK Government subsidy), no programmer needed, all software is free to download, great Forum, really fast chips

Hey Jong, "Sounds like a good project to build your own (gutting the troller and just using the motor, throttle, etc.) I'm now assuming the problem is the PC board." That's right. My plan is to find

Sounds like a good project to build your own (gutting the troller and just using the motor, throttle, etc.)? I'm now assuming the problem is the PC board. Jong

Hey Jim, The goo may be waterproofing rather than anything else. I think your right. Being a deterrent to unauthorized repair is probably just an added benefit to the factory. Hal _____ From:

Hey Steve, "My experience - just pick it out." This unit is 10" long, 3.5 " wide and the encapsulant (thanks to you I now have a name for it) is .375-.5 thick. Picking out manually could prove a

_____ From: Electronics_101@... [mailto:Electronics_101@...] On Behalf Of jong kung Sent: Sunday, January 30, 2011 11:03 AM To: Electronics_101@... Subject: RE:

Hey Reese, "That seems like a method unlikely to produce satisfactory results anyway. Short of careful temperature controls and peeling the coating away before it smokes and bubbles. Soften it but

The goo may be waterproofing rather than anything else. James "Jim" M. Geidl, K6JMG No trees were harmed in the sending of this message; however, a large number of electrons were terribly

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