Picocalc done properly?


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toml_12953
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Joined: 13/02/2015
Location: United States
Posts: 546
Posted: 12:38pm 02 May 2025      

  matherp said  Is there really a big market for this sort of thing?

If there is why not do it properly?

Single board that can be fully built by JLC using my standard component blocks from various boards

RP2350, 16Mb Flash, 8Mb PSRAM
Battery backed RTC
I2S Audio with amp, speakers + headphone jack
Battery with onboard charging and use when external power connected.
16-bit parallel display so fast
Custom keyboard with 10x8 matrix scanned direct from the RP2350 so no tacky I2C faults
Case design for resin print by JLC or home print
Properly supported by standard MMBasic

Everything open source and no profit

The only bit that would require a bit of investment is the tooling for the keyboard. Looks like this would be about GBP1500 one-off for a similar keyboard to the PicoCalc and probably less for a membrane keyboard with click keys. The £1500 is a UK price I'm sure there are Chinese firms who could do this cheaper - haven't researched - and that would have to be amortised across a reasonable build volume - say 100

Interesting?


It all sounds great. I'd buy one. However, I'm not a typical user. You'd be competing against the $75.00 USD PicoCalc so you'd have to create a lot of buzz for such a device if you want to attract the kinds on numbers that would make it feasible. At £1500, there are a lot of much more powerful tiny computers available although they're not self-contained with screen and keyboard. If you ever do produce such a device at under $1K USD, let me know!