All Products

Core boards (Teensy 4.1)

• Teensy 4.1 ($56.95) — 600MHz ARM Cortex‑M7 (NXP iMXRT1062) dev board; best default pick if you want the full Teensy 4.1 feature set.
• Teensy 4.1 (Headers) ($64.95) — same board but comes with headers pre-included for easier breadboard/prototyping.
• Teensy 4.1 without Ethernet ($54.30) or Teensy 4.1 without Ethernet (Headers) ($60.70) — choose these if you don’t need wired Ethernet.

Production / code-protection variants

• Teensy 4.1 Lockable Microcontroller Board ($54.20) — lockable variant aimed at moving from prototype to production.
• Teensy 4.1 Lockable Without Ethernet ($50.95) — lockable + no Ethernet PHY.

Popular add-ons for Teensy 4.1

• Ethernet: Ethernet Kit for Teensy 4.1 ($7.15) or the more integrated Ethernet Adapter for Teensy 4.1 ($9.75). For the Ethernet header connection, add 2x3-pin 2mm PTH Header Pins and Socket for Teensy 4.1 Ethernet ($1.10).
• USB host: USB Host Cable for Teensy 4.1 and 3.6 ($4.95) — converts the Teensy’s USB host header to a USB‑A female port.
• Extra RAM: 8MB PSRAM Chip for Teensy 4.1 ($4.25) or 8MB PSRAM chip for Teensy 4.1 ($3.30) — adds 8MB PSRAM (solder-on) for memory-hungry projects.

Headers / shields / getting started

• Teensy Stackable Header Kit (Extended) ($3.95) — stackable headers sized for Teensy 4.1 / 3.6 / 3.5.
• SparkFun Qwiic Shield for Teensy - Extended ($9.90) — adds 4x Qwiic (I²C) connectors for quick sensor/display hookups.
• Teensyduino Tutorial Kit ($13.50) — handy starter parts pack aligned to the official Teensyduino tutorials.