RFM12B USB Interface Module

RFM12BUIM02 Schematic RFM12BUIM02 PCB Layout RFM12BUIM02 Prototype #1 RFM12BUIM02 Prototype #2
RFM12BUIM02 Production RFM12BUIM02 Case Inner RFM12BUIM02 Case Outer RFM12BUIM02 Application

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Product description

   The RFM12BUIM02 is a simple yet powerful USB interface to the RFM12B versatile radio module from HopeRF. The firmware on the module allows the user to select from a range of packet formats (data length, node ID, CRC length etc) with minimal configuration. It also has onboard flash storage to buffer inbound data until it is retreived by the USB host computer.

   The module comes with a bootloader function, allowing the firmware to be upgraded by the user. The latest C++ Windows libraries and example programs, showing each library function, are are available from our support section. Also available is the latest device firmware in both compiled hex and source code. We do not have code available for *nix or Apple devices at present but this is something we're working on when we have time!

   This project is available for self-assembly but please be aware that three components use surface-mount technology and need suitable tools for careful placement and soldering. The kit also includes a pre-drilled case and decals.

Product specifications

  • Microcontroller: Microchip PIC18F2550

  • Packet buffer: Microchip 25LC640A 8KB Flash

  • Interface: USB 2.0 with a Mini-B socket

  • Power: USB powered drawing a maximum of ???mA when transmitting

  • Firmware: Bootloader or ISCP upgradable

  • Indicators: Power, 2 * USB status, RF Receive, RF Transmit, RF Error

  • Radio specifications

    Radio type: HopeRF RFM12B-xxx-S1

    Radio frequencies (module dependant): 433MHz, 868MHz or 915MHz

  • Antenna specifications

    Socket: M4 screw terminal

    Antenna type: Compressed helical (433MHz)

  • Dimensions w x d x h - mm (inch): TBC


Pricing and Availability


Part Number: RFM12BUIM02

Assembled price: £TBC GBP

Parts Only price: £TBC GBP

Availability: Coming Soon


All prices are excluding UK VAT.

All UK/EU deliveries will have VAT applied at the current 20% rate.

Deliveries outside of the UK/EU are zero rated for UK VAT.


Postage and packing is calculated automatically at checkout based on the destination.