In whch yr hmbl svt makes an incredibly cheap trash smartwatch run Micropython.
This is me disassembling, exploring, reassembling and reflashing a super-cheap LT716 smartwatch from AliExpress. For approximately $3 you get a 24MHz Telink TC32 CPU with 512kB of flash and 16kB of RAM, a decentish 80x160 screen, BLE hardware and the usual set of hardware, all in a fairly nice small package. What to do with it? Well, it turns out it runs Micropython really well.
Useful links follow:
- the RP2040 Telink debugger I wrote:
- the Micropython port itself:
- rbaron’s blog post, which a lot of this work is based on and which inspired me to do this:
- pvvx’s github repository, who I completely forgot to mention in the video but who did a lot of the SWS reverse engineering and produced the STM32 debugger --- even though I couldn’t make this work, this was invaluable as a reference, so thanks!
- Linux and Windows TC32 compiler binaries:
- Telink’s TLSR8232 documentation page, including the SDK downloads:
- mirror of the compiler and SDK, in case it vanishes from Telink’s web site:
- upload of the ROM dumps from the two devices:
- affiliate link to what may or may not be the same model of watch that I bought: (the vendor I bought mine from seems to have vanished!)
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