Pico C-Plus and Pico C-Super
Elektor’s ‘small-C’ meter upgraded in two ways
Published in issue 422, February 2012
The popularity of All Things Test & Measurement among Elektor readers got substantiated once again recently by Pico C, a cute DIY capacitance meter specially designed to deal with small capacitors like below 10 pF, much to the enjoyment of radio amateurs and leaving professional instruments well behind. One limitation of the instrument was noted though, its maximum value of about 2500 pF, triggering reader Jon Drury to write new software culminating in two new versions called Pico C-Plus and Pico C-Super. C+? No, assembly language was used to write the firmware. Completely rewritten software (assembly code). Ready-programmed controllers available.
Extended capacitance range: <1 pF to 500 nF, max. resolution 0.01 pF
3 capacitance ranges: 5 nF, 50 nF, 500 nF
Pico C-Plus: software upgrade only; no PCB modifications required
Pico C-Super: software upgrade & minor PCB alterations required. Reworked PCB available.
Period meter ranges: 16 ms, 160 ms, 1.6 s
Frequency meter range: 8 MHz, max resolution 1 Hz
Signal Generator:
- range 0.8 Hz – 10 MHz
- resolution 0.1% up to 10 kHz, 1% across 10 kHz – 100 kHz
- square wave 0 – 5 V
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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