IoT, meet Blockchain. Blockchain, meet IoT.
By Adam Calihman IoT and blockchain are two very hot industries that, until recently, seemed rather discrete and unrelated. Since the dawn of IoT 1.0,
March 28, 2019
Insert Coin; Receive Bitcoin
This is the first of two posts about a Bitcoin vending machine I built while interning at NetBurner. Part 2 is more technical.
Bitcoin is cool. It's also kind of absurd – based on impossibly complex cryptography and hyped by libertarians and Reddit anarcho-capitalists,
the technology seems destined either to radically change our concepts of value and trust or to languish as a "magic internet currency" for nerds and drug dealers.
June 30, 2015
Bitcoin Hash Functions and Printer Drivers
This is the second of two posts about a Bitcoin vending machine I built while working for NetBurner. Part 1 is more philosophical.
The logic of my Bitcoin vending machine is simple enough:
- Wait for a coin pulse
- Generate a new Bitcoin address
- Send coins from my address to the new one
- Print QR codes
And repeat. I used a thermal printer and a coin acceptor from Adafruit
and controlled them with NetBurner’s MOD5441x development kit. The source code for the whole project is on Bitbucket.
June 30, 2015