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teenix · (This post was last modified: 03-10-2024 02:59 AM by teenix.)

Hi all,

Just taking advantage of one of the new program steps working on the Woodstock board with the HP-29 running.

https://teenix.org/msg29c.mp4

cheers

Tony

teenix · (This post was last modified: 03-20-2024 07:44 AM by teenix.)

Hi all,

Almost there, just have to check the battery charger. The LED display will give an indication when the battery is being charged.

Edit.

Just added an image showing the USB cable connected which is running the calculator and charging the battery. Charge indication is the mantissa sign digit, segment D lit.

cheers

Tony

zixingcheche · 03-20-2024, 09:33 AM

Hi Tony

it is good news!
one question about the battery, Can I use AA size battery x2 in original battery case of wookstock (V1.2 DC x2) ?

Thanks!

teenix · (This post was last modified: 03-20-2024 10:33 AM by teenix.)

(03-20-2024 09:33 AM)zixingcheche Wrote: one question about the battery, Can I use AA size battery x2 in original battery case of wookstock (V1.2 DC x2) ?

The cpu board does not use a step up voltage circuit. It was designed for the small LiPo battery which outputs around 4V, 800mAh, model No. 802540.

cheers

Tony

zixingcheche · 03-20-2024, 11:09 AM

Understood. It is same as spice CPU, right?

teenix · 03-20-2024, 11:13 AM

(03-20-2024 11:09 AM)zixingcheche Wrote: Understood. It is same as spice CPU, right?

Yes, pretty much the same.

teenix · 04-07-2024, 03:56 AM

Hi all,

A bit of a mishap. I manage to accidently short the circuit board while fiddling with it and got a few puffs of smoke and a dead board. I rebuilt a new one and while fiddling some more, the board stopped responding to the communications channel. Then it worked, but the re-flash failed. It is a bit frustrating trying to figure out the problem, new board, bad part, solder joint, software bug etc etc.

After some more fiddling, it turned out the battery was discharged enough to get the processor to reset occasionally. What threw me was the display was still working. Then I thought: why wasn't the low battery indicator working. It was just a tweak of the programmable reference setting.

Anyway, the battery was put on charge and it now works. The charge LED shows through the main display window.

I added a printer interface to the 29C model which sends print data to the PC via Bluetooth and the CalCom program will print the info using the original printer font style similar to the 19C. You can also print a hard copy as well.

The attached image shows Dave Eatons USB cable plugged into the Woodstock charger port and the print output of a small running program.

Hopefully just some final testing then done.

cheers

Tony

teenix · 04-07-2024, 06:33 AM

Reassembled Woodstock battery pack with LiPo installed.

tangdfx · 04-07-2024, 02:03 PM

Good news.

Is it possible to add spice series ROM?

The key number is the same and just add an overlay.

teenix · 04-07-2024, 07:54 PM

(04-07-2024 02:03 PM)tangdfx Wrote: Good news.

Is it possible to add spice series ROM?

The key number is the same and just add an overlay.

Not enough memory unfortunately.

teenix · 04-08-2024, 12:14 AM

Hmmm, no smoke lately, might be finished :-)

Greeting screen if it works ok when first assembled.

cheers

Tony