HP-25C Eumulator

[Chris Chung]

(01-17-2015 10:46 AM)Didier Lachieze Wrote:  However I've noted something strange: the BST function doesn't seem to work, when in program mode pressing BST doesn't move one step back. it doesn't seem to be an issue with the physical button switch as for ex. f SCI 3 works in non program mode and is correctly registered in program mode.
EDIT: don't mind, it was switched to HP 33 emulation ... Switching back to HP 25 everything is OK.

Very nice build and well equipped to do the job. A pair of tweeters helps in a lot of places.

Yes, that confuses me initially as well. Found out the HP-33's back step is shift (G) + SST. The PCB silkscreen is for HP-25 so it doesn't play well when you are in HP-33 or HP-21 emulation.

@walter
Here is the video that shows the various start-up modes

V3 3rd batch list expect shipping late January
rposperi x3, Marcus (k), Geoff, jebem (k), walter, Den, RMollov, Herman (k), algorhythm x2 (k) (12 units)

V3 4th batch list expect shipping mid February
pcfu44, Bernd, Graig, c_d, DMaier, olr (6 units)

EDIT A few member PMed and ask for payment instructions.
I will send out common instructions to everybody when the units are almost ready, (i.e. all parts and PCBs arrived), and I would wait 2/3 days for the payment and for your shipping addresses (and also allow time for myself to do the assembly). My paypal account is associated w/ an gmail account and that's all one needs to send money. This worked well for the last 2/3 batches.
A kit will cost you US$30, assembled unit is US$40. Shipping is $3 for Canada, $5 for US and $8 for rest of the world. Only 2 units / kits per shipping packet. I.e. For 3 units / kits you have to pay 2 x shipping. This is the constraint of the cheaper postage (called light packet) I am using.