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Audio Adapter Board for Teensy 3.0 - 3.2, 3.5 and 3.6 : ID 1780 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Teensy 4.0 Launched for $20 with a Much Faster NXP i.MX RT1062 Arm Cortex-M7 Processor - CNX Software
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Teensy 3.5 & 3.6 by Paul Stoffregen » Thanks, Rewards, Production Prep, Software, Test PCBs — Kickstarter
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