The Grand Bank of Jon Jon *Not FDIC Insured.
summary
Builds a kid-facing bank: a Raspberry Pi 7-inch touchscreen runs a Nerves + Scenic UI, Phoenix and Ecto back end, a Chrome extension hijacks Amazon buttons, and devices talk over Erlang distribution so the ATM stays local. Adds NFC and magnetic-stripe auth, an admin swipe flow, and a simple ledger that recomputes balance by summing all transactions (typically ten to a hundred items). System runs at home, kids use it, and it mostly works.
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chapters (11)
- 0:00Introduction
- 1:44Why create a kid’s bank
- 5:18Designing the Grand Bank
- 8:13Tech stack and ATM
- 11:02Local-first mentality
- 12:52Demo of kid interaction
- 14:40Gotchas and fixes
- 16:46Handling thumbnails
- 17:29Ledger implementation
- 18:34Results and lessons learned
- 20:19Final thoughts
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