I got to seen this badge in person at the Embedded Linux Conference recently at the SiFive booth and it is very nice!

RISC-V Electronic Badge created by AntMicro

http://badge.antmicro.com/

Battery-powered and programmable over NFC from a smartphone. The RISC-V badge features an e-Ink screen to display the badgeholder’s name or whatever they will want to tell the RISC-V community.

GitHub: antmicro/riscv-badge-hw

This repository contains all the hardware design files required to build the RISC-V Electronic Badge development kit. The Badge allows for displaying text and graphics on an e-Paper screen. The actual content to be displayed can be written to the EEPROM memory using an NFC programmer. The Badge contains a PCB module with a RISC-V based microcontroller (SiFive's FE310) that reads the content of the EEPROM memory and transfers it to the e-Paper.

I need to determine the BoM cost and how much would be feasilbe with the $25/badge budge for OHS18.

-Drew Fustini