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Simple Opensource Arduino LC Meter Preview

We named this new Arduino LC meter Goliath, it’s a simple tool for hobbyist for Inductance and capacitance measurement. Because it’s base on Arduino, so you can easily to use the Foca to update the new firmware. It’s Opensource, you can modify the code to reach your special needs.

To locate our product, we refer to is another simple LC meter in entry-level market. Our reference is LC100-A, and we did the same parameters as its performance. Here are some performance parameters that on LC100-A   manual:
  • Measurement accuracy:1%
  • Capacitor measuring range: 0.01 pF – 10uF
  • The minimum resolution: 0.01 pF
  • Large Capacitor measuring range 1uF-100mF/minimum resolution:0.01UF
  • Inductor measuring range: 0.001 uH – 100mH
  • Large Inductor measuring range: 0.001 mH – 100H
  • The minimum resolution: 0.001uH

For the first parameters “1% measurement accuracy”, to be honest, we don’t have accurate measuring instruments can verify it, we can only use some accurate capacitor as a reference source. And we will compare the test results between these two device. And we see that the 0.01pF resolution on LC100-A’s manual, we consider that it just a theoretical value and it’s imposable to reach and has practical significance, so we just say that we can reach the 1pF – even you touch the test hook, the capacitance change more than 0.01pF. The same as resolution of inductor measuring.

As we test a 2000pF 1%  Capacitor, the LC100-A shows 1950pF and the Goliath shows 2005pF. For some big capacitor, we test a 100uF 20% and 2200uF 20% – the general accuracy of most electrolytic capacitors. The result is : LC100-A get the 92uF and 2310uF, the Goliath report 98uF and 2374uF. The difference is in the normal range, and we can not conclude which device more accurate because the capacitor has 20% error and nobody know the specific value. The only conclusion we can give is that they are all working properly.

To review the Goliath Arduino LC meter, we will go on to get some more precise instrument and accurate method. As before, we will put a small batch about 10 units on iStore for sale, with BETA price.