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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 21st Jan 2023, 9:45 pm   #1
LA9CHA Thorvald
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Default 1-50MHz frequency counter kit from Alibaba

Hello, as I was working to install the above mentioned counter in a leader LSG11 signal generator, I managed to destroy the 16-628A pic microprocessor, and am loking for a place to obtain a replacement programmed ic, or if someone may have the program and burn a copy. The counter has 5 led numbers and includes an xtal tester.
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Old 21st Jan 2023, 11:39 pm   #2
Terry_VK5TM
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Default Re: 1-50mhz frequency kit from alibaba

The original code is here https://github.com/Ho-Ro/DL4YHF-Sour...ee/main/DL4YHF, all you need is the correct HEX file (there are 3 variants as described in the ASM file) to program a new PIC.
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Old 22nd Jan 2023, 2:14 pm   #3
Chrispy57
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Default Re: 1-50mhz frequency kit from alibaba

Hi - since the PIC seems to cost between 5 and 10 inc UK postage on EBAY, and a complete kit costs 8.80 inclusive again from a UK seller I wonder if it would be better to just order a new kit and use the PIC if that's all you need?
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Old 22nd Jan 2023, 11:21 pm   #4
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Default Re: 1-50MHz frequency counter kit from Alibaba

As it is cheaper to buy the kit than the part, buy the kit.

Just to point out, these Chinese clones do not have a protected input for the frequency counter so be careful what you connect to it.
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Old 23rd Jan 2023, 1:38 am   #5
Bazz4CQJ
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Default Re: 1-50MHz frequency counter kit from Alibaba

Those 50MHz counters are very vulnerable to PIC death. I'm not sure whether it is sensitivity to static or just overload on the input. It seems to be an issue with counter modules; too little drive and they don't work, too much and the die!

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Old 26th Jan 2023, 11:38 am   #6
LA9CHA Thorvald
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Default Re: 1-50MHz frequency counter kit from Alibaba

Hi and thanks to all of you for advice!
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