![]() ![]() Almost any of the general-purpose I/O pins can be connected to a PWM timer, or be made part of an I 2C or UART port. Pin assignments on the ESP32-S2 are much more flexible than you would find on Atmel AVR-based boards like the Uno. Adafruit has also placed a NeoPixel RGB LED about where the amber LED on the Arduino Uno would be. The devices are designed to be daisy-chained so you can connect several to the one port on the board (STEMMA QT is compatible with SparkFun’s QWIIC). This 4-pin connector provides power and an I 2C interface to sensors and I/O devices available from Adafruit that feature the same connector. The board also features a STEMMA QT I 2C connector. Given that Wi-Fi is a major selling point of the board, untethering it further by providing easy battery support is welcome. For example, there is a LiPoly connector and charge controller, like you’d find on a Feather. An ESP32-S2 in the traditional Arduino Uno form factorĪlthough the board generally follows the Uno form factor, it sports a number of improvements borrowed from Adafruit’s other boards. Thus shields designed for the Arduino Uno’s 5V system may not work. The form factor allows shields to be added to the Metro, but be aware that all I/O runs at 3.3V. ![]() It also allows the board to act as a USB input device (HID). The addition of USB mass storage to the platform allows drag-and-drop deployment of Adafruit’s CircuitPython, making the board very easy to program. The heart of the board, the Espressif ESP32-S2, improves on the ESP line of Wi-Fi-enabled microcontrollers by adding native USB support. The Adafruit Metro ESP32-S2 packages the best features of Adafruit’s recent microcontroller boards in a traditional Arduino Uno form factor. Gift the gift of Make: Magazine this holiday season! Subscribe to the premier DIY magazine todayĬommunity access, print, and digital Magazine, and more Share a cool tool or product with the community.įind a special something for the makers in your life. ![]() Skill builder, project tutorials, and more Get hands-on with kits, books, and more from the Maker Shed Initiatives for the next generation of makers.
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