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$10 bitcoin Hardware Wallet, DIY/FOSS/ESP32/easy build! 📺www.youtube.com/watch?v=uMg598-3wIk
118 sats \ 3 comments \ @cryptocoin 11 Dec 2022 bitcoin
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25 sats \ 0 replies \ @joko 12 Dec 2022
Really cool concept! I guess we have found the lower bound of how cheap we can make something that holds your keys. Good luck making something cheaper than $10.
Two things i noticed:
  1. Seed is generated and shown on the host device. Bad idea for obvious reasons
  2. Password is entered on the host device. Also bad idea for obvious reasons
I don't think there's a reason why both of this couldn't be handled by the device itself - so maybe something for a future update! Even a Jade will be orders of magnitudes more secure, but also 6x as expensive.
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25 sats \ 0 replies \ @nullama 12 Dec 2022
This is based on the LilyGo TTGO ESP32 microcontroller, which has bluetooth and wifi, and made in China.
Cool to tinker with, but I wouldn't put large amounts of money there.
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0 sats \ 0 replies \ @cryptocoin OP 11 Dec 2022
Here's the Tweet that kicked off the Twitter thread where this video was shared:
Boom! $10 @lnbits free and open-source DIY #bitcoin hardware wallet 🤩🔧🙌 ✅ Cheap ✅ Very easy to build ✅ Airgapped OR over web-serial ✅ Uses hardware RNG
https://twitter.com/arcbtc/status/1599771920957775872 [Nitter]
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