Document created by Lauren Percy Employee on Oct 17, 2015Last modified by Diana Torres on Apr 18, 2017
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wunderbar.jpgThe WunderBar by relayr is a revolutionary IoT (Internet of Things) starter kit that includes six different sensors and a master module. This kit enables hardware and software developers to quickly and easily prototype their ideas and create apps to interact with the physical world. The kit works right out of the box and is energy efficient, fast, and secure.


Master Module

  • Freescale ARM Cortex-M4 MK24
  • 1MB Flash, 256KB SRAM
  • 12 GPIOs (analog, SPI, I2C, UART)
  • Gainspan GS1500 WiFi with TLS encryption
  • Nordic nRF51822 with Bluetooth LE stack
  • Li-ion Battery charger
  • Device firmware upgrade over USB (for BLE, Kinetis & WiFi module)
  • Backup Li-ion battery included

Mini Modules

  • Dimensions: 18.6 x 29 x 6.8 mm
  • Nordic ARM Cortex M0 nRF51822
  • Bluetooth LE stack, ceramic antenna
  • 256KB flash, 16KB SRAM
  • 8 GPIOs (analog, SPI, I2C, UART)
  • 1 x WiFi
  • 1 x BLE bridge to Grove/Arduino/Raspberry Pi
  • 1 x IR transmitter
  • 6 x BLE (Beacons)



Kinetis KL2xThe Kinetis KL2x ultra low power MCU family adds a full-speed USB 2.0 On-the-Go (OTG) controller or a full-speed crystal-less USB 2.0 device controller in addition to the Kinetis KL1x series. The Kinetis KL2x MCU family is also compatible with the Kinetis K20 MCU family (based on the ARM® Cortex®-M4 core), and with all other Kinetis KL1x, KL2x, KL3x, and KL4x series MCUs, providing a migration path to lower and higher performance and feature integration.


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