High Resolution Capacitance Meter

High Resolution Capacitance Meter measures in 0.01pF digits. Total range 0pF to 50uF.

Features:

1. It has very high resolution; from 6 to 7 digits! (Others have 3 or 4 digits)

2. It has a wide range; 0pF to 50uF. (Others do not go over 0.1uF or 1uF)

3. It uses only a single cheap PIC 16F628. (Others use two ICs)

4. It does not need calibration! (Others need calibrating with a special test cap)

5. It can do auto-zeroing, floating zero and negative capacitance (relative to zero).

Prototype:

PCB & LCD

Copper side.

Some Test measurement:

With NO capacitor connected.

With 15pF ceramic cap.

0.1uF Mylar cap.

0.47uF Mylar cap.

10uF Electrolytic cap.

22pF ceramic.