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My HP-41CV projects - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: General Forum (/forum-4.html) +--- Thread: My HP-41CV projects (/thread-12134.html) |
My HP-41CV projects - _dev-null - 01-07-2019 07:24 PM Hello! I like to share my 41CV projects with this awesome community. I got two 41CV in poor condition on ebay. I cleaned the calculators, fixed the cracked posts and installed a new NiMh battery. One of them is my workhorse and the other unit sits on a shelf in the livingroom together with a HP-65 and HP-67. I don't use it as a calculator very often, instead it is my PDA, Clock and programming/experiment/fun device. It is equipped with a X-Functions Module, Clonix41, Time-Module, HP/IL Module and a 82143A Printer that is not always connected. (i need more expansion ports ![]() New Battery: I soldered 4 1/3 AAA GP-NiMh Batterys together with a 2 pin connector and put them in a 3D printed battery compartment. HP/IL - PIL-IO: I build the awesome PIL-IO board from J-F Garnier (thanks for developing this cool piece of Hard-/Software). The PIC-microcontroller is soldered together wit a MAX232 on a piece of breadboard. It has one RS232 connector, UART TxD/RxD and 4 I/O pins. Underneath the breadboard is a LiIon battery togehter with a step-up circuit to provide the 5V. I can charge the battery with micro-USB. The programming of the PIC controller is done with a PicKit 3 programmer. Clonix: I also build a Clonix41 module (thank you Diego Díaz for developement, i love your work). It was a bit more difficult to build the module and a programming adapter/device. I dont used a printed circuit for it. I wired the PIC-microcontroller with insulated copper wires to the module contacts. The first prototype had an external 12Mhz quarz, because i had no small one that fits into the module case. Second and final Version had a small quarz inside the module. Programming was done with a self build programming adapter and the PicKit 3 programmer. Currently it is loaded with CCD,Extended-IO, HPIL-Development and Zenrom. The next project is a new battery for the 82143A printer with a self printed battery case and some Arduino projects with the PIL-IO. Pictures: http://www.sp-net.at/nextcloud/apps/gallery/s/6oamMwGCQ7fNwFT Stefan from Austria RE: My HP-41CV projects - JurgenRo - 01-07-2019 09:04 PM (01-07-2019 07:24 PM)_dev-null Wrote: Hello! Awesome, thanks for sharing - I look forward to reading more of your projects! Juergen (from Germany) RE: My HP-41CV projects - Sylvain Cote - 01-08-2019 01:05 AM Hello Stefan, I see that you are having fun, thanks for sharing. (01-07-2019 07:24 PM)_dev-null Wrote: I need more expansion portsYou definitively need this ![]() Regards, Sylvain RE: My HP-41CV projects - mfleming - 01-08-2019 02:36 AM Stefan, Your Clonix build has a very clever solution to the PCB routing problem - no PCB! With that not getting in the way it looks like parts and direct wiring have plenty of room in the shell. Nice work, ~Mark RE: My HP-41CV projects - _dev-null - 01-08-2019 02:18 PM Hello! Today i printed a new battery holder for my 82143A printer. I soldered 4 Sub-C NiMh cells together and made new battery contacts out of brass sheet. For safety i added 3 layers electrical tape between the cells and the brass contacts. Charging is done with a NiMh charger outside of the printer, because the internal charging circuit is not compatible with the NiMh battery. Printing my notes and program listings works perfect! Pictures: http://www.sp-net.at/nextcloud/apps/gallery/s/6oamMwGCQ7fNwFT Later I tried the program "TE" from the book "Extended Functions Made Easy" and noticed a conflict between the CCD Module and Zenrom if loaded together in one clonix module. With both Modules loaded, the Alpha Input is not working correctly. I found a Note inside the CCD folder from the HP41-DVD: Quote:Incompatibilities: I also found a little program that does this job: LBL "TLC" 13.4 PEEKB 128 XOR POKEB CLST END Now Alpha input works! Stefan RE: My HP-41CV projects - _dev-null - 01-08-2019 02:24 PM (01-08-2019 01:05 AM)Sylvain Cote Wrote: Hello Stefan, Yes. I need one. But these things are totally overpriced $$$$ Maybe I can build one. But this has a low priority on my list ![]() |