5V via Micro-USB or 3.7V LiPo
3 devices
Adafruit ItsyBitsy nRF52840 Express
Microcontroller BoardTiny breadboard-friendly Bluetooth LE board with Nordic nRF52840 Cortex-M4F @ 64MHz, 1MB Flash, 256KB RAM, 2MB QSPI Flash, 21 GPIO, and native USB — all in a 36×17.6mm footprint. Supports CircuitPytho
ARM Cortex-M4F @ 64MHz (Nordic nRF52840)256KB SRAM1024KB + 2MB QSPI FlashWiFi falseBLE Bluetooth 5.0 BLE (+8dBm, nRF52840)Zigbee falseEthernet false
~$20View
Adafruit HUZZAH32 ESP32 Feather Board
Dev BoardAdafruit's Feather-format ESP32 board with dual-core Xtensa LX6 @ 240MHz, WiFi b/g/n, Bluetooth Classic + BLE 4.2, built-in LiPo charger, and Feather-compatible pin layout. Great all-around wireless I
Xtensa LX6 dual-core @ 240MHz (ESP32)520KB SRAM4MBWiFi 802.11 b/g/nBLE Bluetooth Classic + BLE 4.2
~$20View
Arduino MKR WAN 1310
Dev BoardLoRa-enabled IoT board with SAMD21 ARM Cortex-M0+ at 48MHz, Murata CMWX1ZZABZ LoRa module, ECC508 crypto chip, 2MB SPI flash, onboard LiPo charger, and 104\u00b5A low-power mode — designed for long-ra
ARM Cortex-M0@ 48MHz (SAMD21)32KB SRAM256KB2MB SPI Flash
~$45View
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