IVEE and IVEE7 (DIY calculators) - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: Not HP Calculators (/forum-7.html) +--- Forum: Not remotely HP Calculators (/forum-9.html) +--- Thread: IVEE and IVEE7 (DIY calculators) (/thread-15584.html) |
IVEE and IVEE7 (DIY calculators) - deetee - 09-14-2020 06:44 AM Hello all! I proudly present IV and IV7 - probably the best RPN calculators I have built so far. They are based on arduino hardware (avr atmel328) and are programmable (900 steps, FORTH-like). While IV has an OLED-display IV7 tries to represent numbers and text (yes that's somehow possible) on an 8-digit-7-segment-display. See some videos on: https://youtu.be/m1aFRhqvuLM and https://youtu.be/uZYgRxXX5ro Regards deetee RE: IVEE and IVEE7 (DIY calculators) - mpark - 09-14-2020 01:05 PM Wow, very cool little calculators! I wonder why you went from a graphic display in IVEE to a 7-segment display in IVEE7. Seems like a step backwards. In any case, I'm amazed at how much functionality you packed into those tiny devices. What's your next project? RE: IVEE and IVEE7 (DIY calculators) - deetee - 09-15-2020 04:58 AM (09-14-2020 01:05 PM)mpark Wrote: Seems like a step backwards. It depends. IVEE7 is cheap and simple. The board costs less than $1.50 (includes wired connectors) and an Arduino Micro (clone) costs approximately $2.50. So basically IVEE7 can be (home-)made for less than $5 (without soldering). So separate from the plotting function IVEE7 lacks in some comfort (ie commands abbreviation with 2 letters), but has the whole range of functions of IVEE - and offers an additional matrix section. (09-14-2020 01:05 PM)mpark Wrote: What's your next project? First I want to improve the code of IVEE and IVEE7. While porting the code I found some bugs and improvements in the original code. If I had one wish free - I would wish to have IVEE as a (cheap) buyable product on the market with a good hardware quality (like HP calculators). A credit card sized gadget like the Arduboy (with 16 keys) would be very charming. But that's far beyond my capabilities. Regards deetee |