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5V 5mA, best option for power? Power regulator info?
To boost you have 2 choices: charge pump or inductive boost converter. The charge pump is much simpler (you don't have to deal with magnetics). That's probably what I'd go with,...
Friday, 18 September 2009 - 05:49
help on PWM dimmer
You can do incandescent dimming with a triac. I've built that up before but it's been years. The triac will auto turn off on the negative cycle. I can't recall off-hand how I...
Friday, 18 September 2009 - 05:27
Negative voltage
What's the part number of that buzzer? Maybe it has an internal oscillator and that positive node is somehow getting a negative voltage imposed on it. If it's a high impedance...
Friday, 18 September 2009 - 05:20
quadrature counter interface
+1 on shift registers. They can go both ways. Serial to parallel out and parallel to serial in depending on which way you need to go. 74HC595 and 74HC165 are examples.
Friday, 18 September 2009 - 05:15
Do cordless anti-static wristbands work?
For home use you can just touch a grounded object. For example a grounded chassis on a piece of test equipment or power supply (grounded through 3rd prong on AC outlet, which I...
Friday, 18 September 2009 - 05:05
Compiler Error
FWIW, it was trivial to write my own c code. Troubleshooting time was nil once I got a logic analyzer hooked up. I should have done this right off the bat. Thanks Clawson. Also...
Friday, 18 September 2009 - 04:59
sleep mode not working in simulator
Thanks for the reply, that pointed me in the right direction. I had "AVR Simulator" selected as the debug platform and changed it to "AVR Simulator 2". I also had the wrong device...
Saturday, 5 September 2009 - 23:07
Compiler Error
Well, these files compile as-is in the arduino environment. They are cpp files (classes, inheritance, etc.). I thought exactly the same thing - it in fact should be an error and...
Saturday, 15 August 2009 - 04:54
Using Magnetic Card Reader in Low Current Application
Well, I have to be able to do this in an automated production environment in the thousands of units. I'm not sure how I would hack the card detect unless you're referring to...
Thursday, 6 August 2009 - 23:33
Using Magnetic Card Reader in Low Current Application
I thought of that but I don't see a simple way to incorporate my own microswitch into the unit. Even the internal units I've looked at have the plastic molding in place where the...
Thursday, 6 August 2009 - 10:58