Home made Pulse to tone convertor - UK Vintage Radio Repair and Restoration Discussion Forum

Cruisin Marine · 27th Jul 2022, 10:26 pm

This may be of some interest, I just found it after considering buying a 746 phone in a charity shop.

https://www.mattmillman.com/projects...one-converter/

Cruisin Marine · 27th Jul 2022, 11:24 pm

Once again a spelling mistake, should be CONVERTER with an E, I despair at my rushed typing sometimes.

Graham G3ZVT · 28th Jul 2022, 12:18 am

Yes I made a few of the forerunner of those. I was trying to get the first one going for about six months on and off and had practically given up, when by chance I saw this by Joe ThePillenwerfer

https://www.vintage-radio.net/forum/...d.php?t=135674

I managed to understand Joe's instructions and it got me into programming the ATtiny85, I have since used them for other projects too.

Here is my final version, it's a good deal neater than my prototype. The two boards form a sandwich in the case.

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I was aware of the Matt Millman code and simplified hardware, but I haven't tried it.

27th Jul 2022, 10:26 pm	#1
Cruisin Marine Heptode Join Date: Jul 2018 Location: Worthing, West Sussex, UK. Posts: 916	Home made Pulse to tone convertor This may be of some interest, I just found it after considering buying a 746 phone in a charity shop. https://www.mattmillman.com/projects...one-converter/

27th Jul 2022, 11:24 pm	#2
Cruisin Marine Heptode Join Date: Jul 2018 Location: Worthing, West Sussex, UK. Posts: 916	Re: Home made Pulse to tone convertor Once again a spelling mistake, should be CONVERTER with an E, I despair at my rushed typing sometimes.

28th Jul 2022, 12:18 am	#3
Graham G3ZVT Dekatron Join Date: May 2010 Location: Greater Manchester, UK. Posts: 18,583	Re: Home made Pulse to tone convertor Yes I made a few of the forerunner of those. I was trying to get the first one going for about six months on and off and had practically given up, when by chance I saw this by Joe ThePillenwerfer https://www.vintage-radio.net/forum/...d.php?t=135674 I managed to understand Joe's instructions and it got me into programming the ATtiny85, I have since used them for other projects too. Here is my final version, it's a good deal neater than my prototype. The two boards form a sandwich in the case. I was aware of the Matt Millman code and simplified hardware, but I haven't tried it. __________________ -- Graham. G3ZVT Last edited by Graham G3ZVT; 28th Jul 2022 at 12:33 am.