Build a Fleet of Low Power, Cloud-Connected e-Ink Displays #eink @hacksterio
Brandon Satrom posts on hackster.io on using the Blues Wireless Notecard and Notehub.io to keep a fleet of e-Ink displays synchronized across a facility.
In this article, I’ll walk through a simple, low-cost and low-power solution for connected digital signage using the Notecard, Notehub.io and e-Ink. The hardware consists of a Notecard, Swan, Notecarrier B, and an inexpensive e-Ink display. The firmware responds to Notehub environment variable changes and uses those values to update the text on the display, or show a bitmap image. Environment variables can be set on a device or at the fleet level to update any number of connected e-Ink displays at the same time.
The hardware for this project starts with the e-Ink display. There are no shortage of great displays available in one, two, three, or more colors, and I selected the Adafruit 2.13″ Tri-color FeatherWing for this project. It supports three colors, has a 250×122 pixel screen, includes a MicroSD card slot for images, and as a FeatherWing, has a socket on the back for a Feather-compatible MCU.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.