Comment by DamonHD
7 days ago
I designed a consumer product based on a respun Uno, that has sold >500k units. The toolchain and hardware remains pretty capable, and can run super low power with care (~1 microamp most of the time).
7 days ago
I designed a consumer product based on a respun Uno, that has sold >500k units. The toolchain and hardware remains pretty capable, and can run super low power with care (~1 microamp most of the time).
But why? You can have the same chip for much less. The "toolchain" is just a bit of syntactic sugar around existing languages and tools, but more to the point, nothing stops you from using it with your own hardware.
I'm not doubting you, just sincerely curious.
If they've done 500k units, "based on a respun Uno" almost certainly means "there's a atmega328p on the PCB, a 16MHz crystal, and some points granting access to the serial and reset pins"
ATMega328p, 32768Hz xtal, in a smart radiator valve. See OpenTRV (for the open part of the s/w and h/w) and Radbot for the commercial product.
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That design started ~10Y ago. If I was starting again I might pick something different.