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such as the Feather 32u4
MicroSD Card: Optional SD card support for storing images to display
PWM Rate: With a PWM rate of ~400 Hz
Easy-to-use AT command set via UART interface
(3) Boot Button
Adafruit METRO 328 - Arduino Compatible - with Headers - ATmega328 loRa HAT for Raspberry Pi such as the Feather 32u4The Adafruit METRO 328 is a fully assembled and tested Arduino compatible microcontroller board with through hole headers attached. It features the ATmega328P running at 16MHz with 32KB flash memory and 2KB RAM, compatible with Arduino UNO R3 shields and boards. This board works with the Arduino IDE (desktop and cloud) by selecting 'Arduino UNO' in the boards menu. Power the METRO with 7 9V DC or via the micro USB connector for 5V USB sources. An on
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