Monday, June 21, 2010

Thou shalt not turn an op amp into a comparator

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Is that writ in stone? A commandment from Mt. Sinai no less? Texas Instrument engineers Bruce Carter and Ron Mancini say that using an op ...
Sunday, June 20, 2010

A purely analog touch sensor

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My sister's family and I spent the afternoon together last Sunday. Had a late lunch at a fine dining restaurant. Food was great. Unfortu...
Monday, June 14, 2010

Thermometer using a thermocouple, instrumentation amplifer, and microcontroller

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Cobbled up an instrumentation amplifier with a gain of 200 using three op amps (3/4 of an MCP609 ), six 5% 20K carbon resistors manually mat...
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Sunday, June 6, 2010

Does it really show?

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Was just fooling around with image processing software. Take any photo or pic, blur it till it's but an unrecognizable goop of colors,...
Tuesday, June 1, 2010

Macros and Defines for the PIC Baseline and Mid-Range Microcontrollers

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[ I had this article up on my website about a year or so ago. I've changed ISP and that website is now defunct. I'm posting it here ...
Wednesday, May 19, 2010

So what did you learn in school?

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I recently bought a 44780-based 16x2 LCD module from a shop I frequent. Before handing over the LCD they test it to show their client that i...
Sunday, January 24, 2010

Finding the resistor values in a voltage divider

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Am currently designing an instrumentation amplifier circuit that requires two different voltages for level shifting (Vcc/2 and Vcc/10). To o...