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Tom's attempt at the h4

Topic for users to share their building progress.
Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Well I got board one and two with the 72 pin sockets mounted and the socket for the oscillator and my solder paste is dry in the tube oh well time to go online and order more

Tom
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DoG
Posts: 1290
Joined: 07 Apr 2018 12:26

Re: Tom's attempt at the h4

Post by DoG »

Tomswork wrote: 02 Mar 2020 04:48 ...and my solder paste is dry in the tube oh well time to go online and order more...
Just mix in some new flux.
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

I will give it a try I have kester 951 and use the red paste

Tom
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Power supply question how much current does the h4 draw on the 5v and 12v.

Tom
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exxos
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Location: UK

Re: Tom's attempt at the h4

Post by exxos »

Tomswork wrote: 02 Mar 2020 20:33 Power supply question how much current does the h4 draw on the 5v and 12v.
12V basically nothing.
5V about 2amps.
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Thank you my bench power supply can handle that easly


Tom
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Looks like my dma boards are on the way I must remember to order the parts

Tom
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PhilC
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Re: Tom's attempt at the h4

Post by PhilC »

Tomswork wrote: 05 Mar 2020 21:25 Looks like my dma boards are on the way I must remember to order the parts

Tom
That reminds me that I really should get round to ordering myself some too.
If it ain't broke, test it to Destruction.
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Yes and alot of Ebay suppliers are out for a break so it digikey for me

Tom
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Tomswork
Posts: 776
Joined: 22 Nov 2019 22:05

Re: Tom's attempt at the h4

Post by Tomswork »

Tos 1.62 us English roms does anyone have them split hi lo for the 27c010 chips. Is so could you email me a set


Tom
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