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A simple but useful PCB Drill Press
posted November 29 2010 13:44.29 by Giorgos Lazaridis

For those who enjoy making their own PCBs (and not only), Rhys comes with another idea. He made a drill press tool for his workbench. The...

[Link: Rhys Goodwin's Weblog]
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Tags: electronic project   diy   mechanical   tools   

Homemade PCB direct printer
posted November 15 2010 12:45.13 by Giorgos Lazaridis

Rhys Goodwin posted an article in his blog, with a inkjet/toner PCB printer. The idea is as follows: First he put a hot PCB...

[Link: Rhys Goodwin]
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Tags: electronic project   chemistry   diy   computer peripheral hacks   tools   mods   

Diode and BJ transistor tester (PIC)
posted November 9 2010 14:19.41 by Giorgos Lazaridis

Embedded Lab just posted a new project. Using the PIC16F688, he made a diode and Bipolar Junction Transistor tester. The part to be tested is placed at 2 (if diode) or...

[Link: Embedded Lab]
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Tags: electronic project   lcd   diy   pic   microcontroller   tools   tester   

Program PICs with your Linux machine!
posted November 3 2010 20:15.06 by Giorgos Lazaridis

If you happen program PICs and your PC OS is a Linux distro, then you probably have already felt how poor is the PIC support in Linux...

[Via: hack a day]    [Link: hack a day]
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Tags: articles   linux related   pic   microcontroller   tools   

Instant PCB testing jig
posted November 3 2010 19:46.00 by Giorgos Lazaridis

Limor from ladyada.net comes with another interesting idea. She made a testing jig for her PCBs. Using some spring-loaded...

[Via: ladyada.net]    [Link: ladyada.net]
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Tags: electronic project   diy   microcontroller   arduino   mechanical   tools   

Universal motor speed control by a microcontroller
posted August 31 2010 18:06.29

Ben Krasnow found a method to control speed of a universal motor (a 120V AC drill motor in this case) by using a CdS photoresistor instead of the original variable resistor used to control the standard triac dimmer circuit that was the drills trigger. The CdS photoresistor is driven by an LED that is controlled by a PWM pin from an arduino microcontroller. This system provides a very easy way to control 120V AC devices with a single PWM pin, and not use any timing code or worry about zero-crossing of the AC power since this is done intrinsically in the circuit. It also offers true electrical isolation between the AC line voltage and microcontroller.
Simplicity at its best.

[Link: benkrasnow]
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Tags: diy   microcontroller   arduino   tools   

Cheap and dirty laser range finding
posted July 5 2010 18:01.06

Forrest Higgs wanted a way to measure distance for a robot he is making without the need of ultrasonic rangefinders, only alternative he had was with laser for direct measurement or offset trigonometric measurement.
Since direct measurement lasers cost alot he went with the second option, he placed a web cam and a laser pointer point...

[Link: activetelepresence]
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Tags: electronic project   diy   laser   tools   

CNC foam cutter
posted July 2 2010 17:49.56

CNCroro made a made a CNC foam cutter from easy to find and cheap materials. The low price of the project doesn't mean low results though, the accuracy provided by the four unipolar drivers is up to 0.006mm/step making it more than adequate for a good precision project that its builder desired.
Cutting at spee...

[Link: CNCro]
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Tags: crazy hack   diy   mechanical   tools   

Simple inductance meter
posted June 23 2010 19:37.52

Luk made an inductance meter which comes in handy when winding your own coils or transformers as needed in switching power supplies. It becomes even necessary for winding flyback transformers where the air gap must be adjusted.
The author of the original circuit is unknow but Luk made the PCB and added an additional range switch and a buzzer.
Complete details and schematics can be found here.

[Link: doc-diy]
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Tags: electronic project   diy   tools   

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