Transcript A Surprisingly Accurate Digital LC Meter (I didn`t expect it to work so

A design by
Phil Rice
VK3BHR
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Author Language & Web Site
Marek SP7DQR
Polish
http://sp7dqr.waw.pl/lcmeter_pl.html
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Aleksandr Buyevskiy Russian
http://www.cqham.ru/lc_meter.phtml
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Patrick TK5EP
French
Volker SM5ZBS
German
http://tk5ep.free.fr/tech/lcmeter/fr/lcmetre_f.php
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http://www.janson-soft.de/lcmeter/lcmeter.htm
Pic Based design with software calibration.
http://en.wikipedia.org/wiki/PIC_microcontroller
Low Part Count.
Simple to use.
Battery Powered.
Locally available parts.
Claimed measuring range:
Capacitors - 0.0pF to about 0.1uF
Inductors - 0.0uH to somewhere over 10mH
All Thourgh Hole and NO SUFACE MOUNT 
Small measurements are inaccurate,
because of quantising error.
Capacitors - 0.0pF to about 0.1uF
Inductors - 0.0uH to somewhere over 10mH
Origional Design
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A 16F628 PIC is used. This has internal
comparator, which means the LM311 is no
longer needed.
Software calibration is used. The finished meter
can be calibrated against "any" accurate
capacitor within the range 100pF to about
10000pF.
Redrew schematic in ExpressPCB with Mouser Part numbers.
Redrew layout with changes for new parts.
Extracted Bill of Materials from the schematic.
Upload to Mouser and make any changes for items you have.
Print PCB layout and etch the circuit board (Iron on process).
http://www.staples.com/Staples-Color-Laser-Paper-Glossy-8-1-2-inch-x-11-inch/product_633215
This is still a work in progress…