A prototyping board to build your hexpansion

Features:

• 64 Kbit (8 KiB) EEPROM
• EEPROM write protection jumper (P1): short it to write-protect
• Qwiic connector
• I2C pull-ups
• Power LED
• max 3V3 current: 600 mA

Parts to solder

• R1: one 402 Ω resistor
• R2, R3 and R4: three 4.7 kΩ resistors
• C1: a 0.1 µF capacitor
• D1: an LED
• U1: a 64 Kbit EEPROM
• U2: a Qwiic connector

We missed a mark on the board. This is the correct LED polarity:

Online code editor for badge apps

We extended (vibe coded) the badge emulator and added a code editor. You can try live coding your badge app here

Github repository

See https://github.com/codemyriad/protogon for source KiCad files and more