Introduction to DIY PIC16F628A LC Meter
A DIY LC meter was popular many years ago. It requires only a PIC16F84A or PIC16F628A micro-controller with a dozen of components. The total budget is under 10 US Dollars. This LC meter was done by a university professor. It's free and open source.
The original author had already design the software, schematic diagram and PCB pattern.Currently, there are many author on the web re-design and modified the software and hardware of this LC meter.
The LC meter is important whenever I need to customize my own coil, or measuring any capacitance. Without a DIY LC meter, an on-sale LCR meter is needed. It cost around 20 US Dollars.
I have design my own printed circuit board for my personal use. Because any ready-designed PCB has different component footprint. I adjust the PCB pattern to fit the component I stock.
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| My design of this DIY LC meter |
Making My Own Circuit And PCB Design
I didn't write my own software or modified the original software. I use a ready-to-use hex file downloaded from the internet. You can google this hex file from any site.
I only made my own schematic and PCB design.
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| Schematic diagram I have made in 2017. |
Schematic and PCB design is done with Proteus 8, and could be downloaded here. The bill of materials is stored in the design file. This meter requires over 40 components. I make this design to fit all components available in local warehouse.
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| My DIY LC meter I have assembled. It's measuring a toriod displaying 497.3 uH. It's powered by a PIC16F628A CPU. |
I had shot a video for this meter on YouTube.
Hello good day sir. Pls come across ur blog and I really find it very interesting. I have learned alot from many projects circuit you had uploaded. pls I need the L-C meter source code in mikro c programs. Likewise, there is programmable timer I come across, I have already downloaded it and I didn't know the function of individual buttons. Which one is meant for menu, set, and so on. Pls it is urgent as, I am working on right now. My Gmail addresses is: rafiuajape4@gmail.com
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