Teensy 4.0 breakout boards

These boards allow you to access the bottom solder pads on the Teensy 4.0.

• PJRC has this list: breakout-board-for-teensy-4-0

• Hyperbolic Labs: Teensy 4.0 Ultimate Breakout Board -- sold out since October 2019

• Loglow/talldog Teensy 4.0 breakout board

• SD-Connector for Teensy 4

• Burgess T4.0 expansion board

• Trainer4edu/FRDM Teensy 4.0 boards:

• • Trainer4edu/FRDM Information
• • OSH park PCB without USB host
• • OSH park PCB with USB host
• • PJRC Thread discussing the Trainer4edu/FRDM

• Blackketter Teensy 4.0 boards:

• • PJRC thread about the Blackketter board
• • Blackketter breakout board information
• • OSH park PCB for Blackketter board