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TENSTAR 2pcs NRF52840 Development Board – the ultimate companion for your Nice!Nano V2.0 Bluetooth Split Keyboard projects. These compact, red‑colored boards are fully compatible with the Pro Micro layout, providing a powerful, low‑power microcontroller solution for DIY enthusiasts, hobbyists, and professional developers alike.
Product Overview
Each board is built around the Nordic Semiconductor NRF52840 SoC, featuring Bluetooth 5.0, dual‑mode connectivity, and a 32‑bit ARM Cortex‑M4 processor. Designed for split keyboard and Bluetooth applications, the TENSTAR boards offer a streamlined, ready‑to‑use platform for firmware development, rapid prototyping, and custom keyboard builds.
Key Features
- Dual‑mode Bluetooth 5.0 and USB connectivity
- 32‑bit ARM Cortex‑M4 processor @ 64 MHz
- Rich peripheral set: UART, I²C, SPI, PWM, ADC, and more
- Built‑in STK500 compatible ISP header for easy programming
- Compact 2.1 × 1.5 in. footprint, perfect for Pro Micro and Nice!Nano V2.0 layouts
- Red PCB color for clear visual identification in multi‑board setups
- Open‑source firmware support (Arduino, QMK, TinyUSB)
- Low power consumption – ideal for battery‑powered keyboards
- Robust, industry‑grade components for reliable long‑term use
Specifications
• MCU: NRF52840 (ARM Cortex‑M4, 64 MHz)
• Flash: 1 MB, RAM: 256 KB
• Connectivity: Bluetooth 5.0, USB 2.0 (Full‑Speed)
• Operating Voltage: 3.3 V (5 V tolerant)
• Pin Count: 42 (36 usable I/O)
• Package: 2.1 × 1.5 in. (53 × 38 mm)
• Operating Temperature: –40 °C to +85 °C
• Weight: 12 g per board
Why Choose TENSTAR?
With the TENSTAR NRF52840 boards, you gain a ready‑to‑go development platform that eliminates the need for custom PCB design. Their compatibility with the Nice!Nano V2.0 and Pro Micro ecosystems means you can instantly plug them into your existing keyboard prototypes or create brand‑new split keyboard designs with minimal effort. The boards’ robust Bluetooth 5.0 support ensures low latency and high stability, making them perfect for gaming, typing, and productivity applications.
Ideal Uses
- Custom split keyboard firmware development
- Bluetooth peripheral prototypes
- Educational projects in embedded systems
- Rapid prototyping for IoT devices
- Open‑source hardware and firmware experimentation
Order your 2‑piece TENSTAR NRF52840 Development Board set today and unlock the full potential of your keyboard projects. Whether you’re building a high‑performance gaming rig, a minimalist typing station, or a next‑generation IoT device, these boards provide the power, flexibility, and reliability you need.
Price: Original price was: $ 35.97.$ 11.51Current price is: $ 11.51.