Having a really bad three weeks!

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Having a really bad three weeks!

Post by daveejhitchins » Tue Jul 11, 2017 7:06 pm

It was a dark, moonlit night . . . When my RepRap Huxley 3D printer started to fall apart - The printing became erratic - I traced it to a crack in one of the X support bearing tubes. When I looked further I noticed that some of the other parts had cracks in them. All the parts we the supplied printed pieces . . . . Then along came DanielJ and offered to reprint the affected parts =D> Many thanks :D

In the meantime, realising I'm way behind in producing 3D printed MGC case, I ordered a replacement in the form of a Kodama Trinus - Built like a brick outhouse 8) - It duly arrived this Monday morning. Build went very smoothly - Set-up went OK - Then I noticed that one of the hot-end fans wasn't working . . . It has two of them in series?? The outer one seemed dead. Checked with a 9V battery - Fan OK - Checked Voltage on the connector pins -
it appeared very erratic. So, I thought, get the 'scope out and have a look. But first a visual check. There seemed to be a driver (transistor/FET?) and, probably, driven directly from the processor. All the soldering looked fine. Setting up the 'scope, I connected to channel 4 (nearest to the printer, the way I had it) nothing :? Spent a while checking other pins - after a while it dawned on me that channel 4 wasn't working. Don't think I've used it before - RIGOL 4 month old. Fortunately purchased from the UK main dealer.

Well, that's my 3 pieces - everything should go smoothly from now on [-o<

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

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Re: Having a really bad three weeks!

Post by vanpeebles » Fri Jul 14, 2017 6:43 am

Build a heavy duty steam powered one :D

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Re: Having a really bad three weeks!

Post by tricky » Fri Jul 14, 2017 7:02 am

If start with cast iron as steel can be tricky at home ;)

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Re: Having a really bad three weeks!

Post by 1024MAK » Fri Jul 14, 2017 4:02 pm

Bodge it using Meccano :lol:

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Re: Having a really bad three weeks!

Post by jgharston » Fri Jul 14, 2017 6:25 pm

1024MAK wrote:Bodge it using Meccano :lol:
Indeed! :)

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PDP11 BBC BASIC IV Version 0.25
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