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# random
c

crooked-tent-69024

07/17/2021, 7:16 PM
Hi, I want to build a wrist watch for people I love using e-ink display, can I get some articles on that? or if someone has built it before and can guide me through it.
r

refined-vegetable-38843

07/17/2021, 7:40 PM
I am aware of this https://rebble.io/
m

melodic-crowd-48995

07/17/2021, 7:51 PM
Saw this on HN some time back: https://github.com/peerdavid/Watchy
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crooked-tent-69024

07/17/2021, 8:29 PM
I want to buy a ER-EPM0154-1R, possible in india? Thanks @refined-vegetable-38843, @melodic-crowd-48995, very helpful
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creamy-sundown-74328

07/18/2021, 10:51 AM
You can get a ttgo watch by lilygo from banggood
Or maybe available in india as well
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crooked-tent-69024

07/18/2021, 10:56 AM
@creamy-sundown-74328 , I wanted to build one myself, my loved one would appreciate that :), but I will look into it thanks
v

victorious-energy-56764

07/18/2021, 1:50 PM
I like the idea. If you keep a chronicle of your research and journey of building it, it would be lovely to read
3
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faint-energy-11966

07/18/2021, 3:57 PM
I want to build something like this for myself later this year. If you come across some good resources, do let me know.
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creamy-sundown-74328

07/19/2021, 5:37 AM
@crooked-tent-69024 Ah cool, yeah there are lots of modules available these days to do that easily at a low cost. I made one around 6-7 years ago with OLED and ESP8266. https://github.com/shantanugoel/esp8266-smartwatch
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crooked-tent-69024

07/19/2021, 5:39 AM
hey @victorious-energy-56764, @faint-energy-11966 I will 🙂
very cool @creamy-sundown-74328, let me explore that, thanks 😄
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creamy-sundown-74328

07/19/2021, 6:15 AM
I left it out in the middle though (As I do with my all side projects :P) and didn't build the final chassis with lipo. But let me know if you need any help during your endeavors and I can help out. You should mostly look at ESP32 (Can choose from S2/C3 variants of it as well depending on your needs) as that will give you most things together (A good enough micro controller + onboard wifi + BT + ADC + enough SPI/i2c/gpio/battery to connect any peripherals, all in one for an extremely cheap package and small form factor conducive to a watch). Lots of third party firmware/drivers as well and if you want to do your own, it's pretty easy to write. They support micropython and nodemcu as well in case you want to go that way instead of the native C SDK (though C will require much less space and be more performant)
So with that, only HW things you will need to choose are a relevant size e-ink display, a few buttons, a lipo battery and 3d print a chassis
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crooked-tent-69024

07/19/2021, 9:04 AM
I love esp32, I am using it for building a wifi lamp, :D I am using nodemcu btw. And yes I am using C to do stuff, I want to use e-ink display, I hope the lipo battery isn't giant.
🙌 1