ASCII art NFT hardware and software device
This limited edition of 32 pieces is part of the Kunsthalle Zürich NFT edition program by Andreas Gysin.
Each piece has a unique number (edition number) permanently fused into the hardware. Every hardware device is related to the digital NFT token on the Ethereum blockchain.
The custom PCB relies on an ESP32 microcontroller and uses a monochrome memory liquid crystal display to show the ASCII art NFT.
Visit the LCD1 official webpage.
lcd.ertdfgcvb.xyz photography by Simone Cavadini Realtime token Twitter development thread
The two-layer PCB board is 71x71mm; it uses FR-4 as the base material and has the ENIG surface finish for higher visual quality and durability.
The board is powered by a 500mA 3.7V lipo battery that can be recharged via USB-C. There is a 5V pad that can be used to power it cleanly for installation or exhibition purposes.
Three RGB LEDs and a small speaker are also on the board. The two top buttons are used to navigate the menu.
There are two voltage regulators, the first is for the main 3.3V, and a second booster provides the 5V required by the monochrome display.
The speaker is driven by a tiny DAC/amplifier that communicates with the ESP32 via the I2S bus.
The ESP32 microcontroller is programmed via the USB-C connector.
The board has been fabricated and assembled at JLCPB.