Heathkit SweetP Plotter Documewnts

[Darrell Pelan]

I just got a working Heathkit SweetP Plotter with no documentation or connection cable. I found the kit manual online but no schematic. The interface is a 20 pin parallel port. I also found a YouTube video on how to refill the pens using the guts of a Sharpie. I'm currently working through that process.

Does anyone have the schematic so I can build a cable?

TIA

   Darrell

[norberto.collado koyado.com]

Please use a Multimeter and measure on the 20 pin connector all the pins that are grounded. Find pin 1 on such connector. On the 20 pin connector I will expect 10 pins to be grounded. If not, then it using the additional STATUS pins. After finding pin 1 and all the grounds, hopefully we can figure out the connections to the Computer parallel port.

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[Joseph Travis]

Darrell,

I'll send you the details when I return home from WV.

Joe 

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[Darrell Pelan]

Thanks, Joe!

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[Darrell Pelan]

Thanks! Good plan to move forward.

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[steve shumaker]

I have the manuals but they're oversized.   Working it now.

Steve

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From:	Joseph Travis <jtravi...@gmail.com>
To:	se...@googlegroups.com
Reply-To:	se...@googlegroups.com
Date:	Mon, 10 Aug 2026 12:10:47PM GMT+00:00

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[steve shumaker]

Here's two of three
attachment
Steve

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From:	Darrell Pelan <pel...@gmail.com>
To:	SEBHC <se...@googlegroups.com>
Reply-To:	se...@googlegroups.com
Date:	Mon, 10 Aug 2026 05:02:13AM GMT+00:00

Subject:	[sebhc] Heathkit SweetP Plotter Documewnts

I just got a working Heathkit SweetP Plotter with no documentation or connection cable. I found the kit manual online but no schematic. The interface is a 20 pin parallel port. I also found a YouTube video on how to refill the pens using the guts of a Sharpie. I'm currently working through that process.

[steve shumaker]

And here is 3 of 3  (the manual)

Steve
attachment

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From:	Darrell Pelan <pel...@gmail.com>
To:	SEBHC <se...@googlegroups.com>
Reply-To:	se...@googlegroups.com
Date:	Mon, 10 Aug 2026 05:02:13AM GMT+00:00
Subject:	[sebhc] Heathkit SweetP Plotter Documewnts

I just got a working Heathkit SweetP Plotter with no documentation or connection cable. I found the kit manual online but no schematic. The interface is a 20 pin parallel port. I also found a YouTube video on how to refill the pens using the guts of a Sharpie. I'm currently working through that process.

[Randy E (OoMOR)]

Nice! The Illustration Booklet shows the 20-pin connector pinout.

[Joseph Travis]

Got home a little while ago and had a look at the cable.  It's not straight forward as I hoped.  I'm gonna have to ring it out, pin for pin.  I'll try to do that and get back to you tomorrow.

Joe 

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