Omnimo nRF52840 is a compact development board that features the Nordic’s powerful nRF52840 multiprotocol SoC. This chip supports a wide array of wireless protocols, including Bluetooth Low Energy, Bluetooth mesh, NFC, Thread, Matter, and Zigbee. The board is compatible with over 2,000 add-on boards from the Feather, Qwiic, mikroBUS, and Pmod ecosystems.

With its robust wired and wireless capabilities and user-friendly design, Omnimo nRF52840 is ideal for projects centered around mobile applications. It is also suitable for a wide range of electronic and IoT projects and is compatible with beginner-friendly environments like CircuitPython and the industrial SDK, nRF Connect.

Adafruit Feather-Compatible Pinout

Omnimo features a Feather socket, allowing you to choose from dozens of useful FeatherWing modules to meet your needs. It also supports Adafruit’s Feather pinout, so programs that work on other boards like the Feather nRF52840 Express can be used with Omnimo nRF52840.

Compatible With a Wide Array of Add-On Boards

You will undoubtedly find add-on boards suited to your project among the wide range of Click modules. Omnimo nRF52840 is one of the smallest possible boards, regardless of module type.

Qwiic and Pmod-friendly

Omnimo nRF52840 is equipped with a JST 4-position 1mm connector linked to the I2C port, also known as Qwiic or Stemma QT. With over 300 compatible modules available on the market, you can quickly connect one or more of them to the board in series. Additionally, you can use dozens of Grove modules through this connector with an adapter cable (e.g. PRT-15109).

Digilent Pmods can also be connected directly to Omnimo nRF52840, allowing you to benefit from a wide range of available modules.

Accessibility Maintained

Omnimo’s LEDs and switches are thoughtfully positioned to remain accessible regardless of which add-on boards are used. It also includes a dedicated on/off switch, so you don’t need to unplug the USB cable or battery to power down the board. Furthermore, the battery can be recharged even while the board is turned off.

Develop Your Application with Ease

The board comes preloaded with the UF2 bootloader, allowing you to develop programs for the board using Arduino IDE or CircuitPython and load compiled code via USB serial or by dragging and dropping firmware files using the mass storage interface. If you prefer, you can also use the over-the-air (OTA) programming capability.

Advanced programming and debugging is possible through the SWD port (standard 2x5 1.27 mm connector), allowing you to take advantage of many features of the Nordic nRF Connect SDK to build your project.

Optimized for Home Assistant

Omnimo nRF52840 is perfect for Home Assistant due to its support for multiple protocols and extensive compatibility with add-on boards, particularly those equipped with sensors. Its low power consumption allows for long-term battery-powered operation, where wall power can’t reach.

Features & Specifications

• Based on Nordic Semiconductor's nRF52840 (MDBT50Q-1MV2)
  • Multi-protocol: Bluetooth LE, Bluetooth Mesh, Thread, NFC, ANT, Zigbee, and 2.4 GHz proprietary protocols
  • 1 MB Flash and 256KB RAM
  • 2 MB of QSPI Flash for storing CircuitPython files
  • Interfaces: SPI, UART, I2C, I2S and USB
  • 12-bit, 200 KSPS ADC - 8 channels
  • 4 PWM channels
  • On-chip NFC-A tag for simplified pairing and payment solutions
  • 1.8 V to 3.3 V regulated supply for external components

Interfaces

• mikroBUS
• 26 GPIO pins, Feather-compatible layout
• Pmod
• Qwiic/Stemma QT
• Three programming options: USB, SWD debug connector, or OTA
• Supported programming tools: Arduino IDE, CircuitPython, and Nordic nRF Connect SDK

Power

• Battery connector to connect 3.7-4.2 V Lithium-polymer battery
• On-board 3.3 V LDO regulator
• Switchable output voltage to turn off modules when not in use

Buttons and Indicators

• Side on/off switch
• 2 user-programmable LEDs, 1 NeoPixel RGB LED
• 2 user-programmable buttons
• Side reset button

Comparisons

Comparison with other form factors

¹ Some mikroBUS and Pmod pins are shared with Feather socket pins.
² Supported by many Feather boards, though not universally.
³ It is possible to connect multiple Grove modules using a Qwiic-to-Grove adapter cable (e.g. PRT-15109).
⁴ Applicable to most XIAO boards, but not all.

Comparison with similar boards that are based on the nRF52840 SoC

Support & Documentation

Omnimo nRF52840 is a fully open-source project. The design files for version 1.1 are available in the project’s GitHub repository. Design files for the latest version will be uploaded at the end of the campaign. Some example projects and use cases can be found on Hackster.io.

Manufacturing Plan

The board will be manufactured by our partner Elecrow, a company with years of experience and deep expertise in manufacturing, testing, packaging, and global shipping. Every board will be thoroughly tested, programmed with the UF2 bootloader, and carefully packaged, all handled by our trusted partner.

Fulfillment & Logistics

Once the production run is complete, the Omnimo nRF52840 boards will be sent to Crowd Supply’s fulfillment partner, Mouser Electronics, which will handle global distribution to all backers. To ensure safe delivery, each board will be carefully sealed in an anti-static bag, protecting it from electrostatic damage during transit. You can learn more about Crowd Supply’s fulfillment service under Ordering, Paying, and Shipping in their guide.

Risks & Challenges

Although global supply chain challenges such as tariffs and parts availability remain a potential concern, we are well prepared to deliver the product on time and within budget. With the support of partners like Elecrow, Nordic, Mouser, and others, we’re able to reduce project risks and adapt quickly when needed. Should any delays or changes occur, we’re committed to keeping backers informed with transparent and timely updates.