Blue Pill STM32F103C8T6

Dev Board
Blue Pill STM32F103C8T6

Popular low-cost development board based on the STM32F103C8T6 ARM Cortex-M3 microcontroller running at 72 MHz. Features 64 KB flash, 20 KB SRAM, and extensive peripheral support for embedded developme

STM32F103C8T620 KB64 KB37 GPIO

Pine64 PineTime

nRF52832
Pine64 PineTime

Open-source smartwatch built on the Nordic nRF52832 SoC with 1.3-inch IPS touchscreen, heart rate sensor, accelerometer, and week-long battery life. Runs InfiniTime, Wasp-OS, or Zephyr firmware. Price

ARM Cortex-M4F @ 64MHz, FPU, DSP, AES-128 hardware64 KB SRAM512 KB + 4 MB external SPIBLE Bluetooth 5.0 BLE
~$27View

makerdiary nRF52840-MDK USB Dongle

nRF52840
makerdiary nRF52840-MDK USB Dongle

Open-source multi-protocol wireless USB dongle based on the Nordic nRF52840 SoC. Supports BLE 5.4, Thread, Zigbee, 802.15.4, NFC, and USB 2.0 with UF2 drag-and-drop bootloader. Priced at $12.99.

ARM Cortex-M4F @ 64MHz, FPU, DSP, CryptoCell-310 (RSA, ECC, SHA-256, AES)256 KB SRAM1 MBBLE Bluetooth 5.4 BLE + MeshZigbee Zigbee 3.0
~$13View

nice!nano v2 Wireless Keyboard Controller

nRF52840
nice!nano v2 Wireless Keyboard Controller

Pro Micro drop-in replacement wireless keyboard controller built on the nRF52840 with BLE 5.0, onboard LiPo charger, mid-mount USB-C, and UF2 bootloader. The most popular controller for ZMK wireless s

ARM Cortex-M4F @ 64MHz, FPU, DSP, CryptoCell-310256 KB SRAM1 MBBLE Bluetooth 5.0 BLE
~$25View

BeagleConnect Freedom

CC1352P7
BeagleConnect Freedom

Open-source wireless IoT board with TI CC1352P7 dual-band radio (sub-GHz + 2.4 GHz), BLE 5.0, two mikroBUS sockets for 1,000+ Click boards, and Zephyr RTOS. Designed for long-range wireless sensor net

ARM Cortex-M4F @ 48MHz, FPU, DSP144 KB SRAM + 8 KB cache704 KB + 2 MB external SPIBLE Bluetooth 5.0 BLE
~$30View

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More to explore — popular traits shared by devices with Firmware: Zephyr RTOS.