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nRF52-DK development kit (Nordic Semiconductor)
Delivery within 2 to 4 business days.
Official Nordic kit for nRF52: Bluetooth LE and Mesh, built-in SEGGER programmer, Arduino-compatible headers.
Plugs into this board
RP2350B board (WeAct)
WeAct board built on the Raspberry Pi RP2350, with its two ARM cores and two RISC-V cores to choose from. 48 GPIO broken out and 16 MB of Flash: plenty of pins to drive without running short on space.
Delivery within 2 to 4 business days.
Seeed XIAO ESP32-C3 board
Development board the size of a stamp: RISC-V ESP32-C3, Wi-Fi and Bluetooth 5, external antenna connector. The cheapest of the XIAO range.
Delivery within 2 to 4 business days.
ESP8266-DevKitC-02U board (Espressif)
The official ESP8266 development board, built around the external-antenna ESP-WROOM-02U module, with USB onboard. Plug it in and flash it, a quick base for a small Wi-Fi device.
Delivery within 2 to 4 business days.
ESP8266-DevKitS board (Espressif)
Official ESP8266 module test board: the module sits on spring contacts, no soldering. For flashing and testing before you solder.
Delivery within 2 to 4 business days.
ESP32-C6-DevKitM-1 board (Espressif)
Official ESP32-C6 development board, Wi-Fi 6, BLE 5.3, Zigbee and Thread. Two USB-C ports, RGB LED, 2.54 mm headers.
Delivery within 2 to 4 business days.
Seeed XIAO ESP32-S3 board
XIAO board built on ESP32-S3: dual core, Wi-Fi and BLE 5, external antenna connector, and enough power for a small on-device model.
Delivery within 2 to 4 business days.
FireBeetle ESP8266 board (DFRobot)
ESP8266 board in the FireBeetle form factor, Wi-Fi, ten digital inputs and one analog. Built-in battery charging, low standby current.
Delivery within 2 to 4 business days.
Seeed XIAO nRF52840 board (BLE)
XIAO board built on nRF52840: Bluetooth 5, NFC, and a few microamps in sleep. For a sensor that must run for months on a battery.
Delivery within 2 to 4 business days.