Avnet Wi-Go Module¶

Common features¶

The Wi-Go system is compete wireless data acquisition based on the Freescale Freedom Development Platform for Kinetis KL25Z MCUs. The Wi-Go system adds Wi-Fi capability to the Freedom platform and its 800mA/h battery can provide days of power to facilitate portable data acquisition from the on board sensor system, while the on-board serial flash memory facilitates data storage and provides additional storage for complex web pages. The Wi-Go system is a two board set that includes a modified Freescale Freedom Development Platform mated to an Avnet Wi-Go module so no other components are needed to get started developing your own application for the Internet of Things.

Wi-go features
• Accelerometer for 3D acceleration monitoring (MMA8451Q)
• Magnetometer for compass direction monitoring (MAG3110)
• Altimeter based elevation monitoring (MPL3115A2)
• Air Pressure monitoring (MPL3115A2)
• Temperature monitoring (MPL3115A2)
• Ambient Light Level monitoring, buffered (TEMT6200)
• 2 MBytes of low-power serial flash memory (S25FL216K)
• Wi-Fi Communications module (LBWA1ZZVK7)
• Battery operation, monitoring and smart charging (800mAh Lithium Polymer battery) (MAX8856TDFN14)
• Buck-Boost regulator for extended use of battery (MAX8625A)
• LED ouputs (1x TriColor LED, plus 3x discrete User LEDs)
• Vishay’s TEMT6200FX01 analog output ambient light sensor

Kit contents
• Avnet Wi-Go module
• Kinetis-L Series KL25 Freedom platform (modified)
• Getting Started QuickStart Card
• Getting Started Guide (online)
• USB cable (USB A plug to Mini-USB B)

Modified FRDM KL25Z¶

The FRDM KL25Z board included with this kit cannot be powered from USB when disconnected from the Wi-Go baseboard because following components are removed and/or modified :

• Diode D1 (removed) - This allows turning the kit on/off from the switch on the Wi-Go module.
  
• Diode D5 (pin1 bridged to pin3) - The voltage drop over D5 brings the input voltage of the MAX8856 near its lower limit of 4.25V.

mbed Header file¶

• Pin declarations - Wi-Go-Pins ^{UNDER DEVELOPMENT}
  

mbed Libraries¶

• Accelerometer - For 3D acceleration monitoring
  MMA8451Q ^{UNDER DEVELOPMENT}
  
• Magnetometer - For compass direction monitoring
  Simple MAG3110 library and Example program ^{UNDER DEVELOPMENT}
  
• Altimeter, air pressure and temperature monitoring
  MPL3115A2 ^{UNDER DEVELOPMENT}
  
• Ambient Light Level monitoring
  TEMT6200 ^{UNDER DEVELOPMENT}
  
• Serial flash memory 2 MBytes, low-power
  S25FL216K ^{UNDER DEVELOPMENT}
  
• Wi-Fi Communications module
  LBWA1ZZVK7 ^{UNDER DEVELOPMENT}
  Based on TI's CC3000 SimpleLink WiFi module (http://processors.wiki.ti.com/index.php/CC3000). A patch programmer (firmware update tool) is also necessary - info at http://processors.wiki.ti.com/index.php/CC3000_Patch_Programmer
  
• Battery charger & power manager - operation, monitoring and smart charging (800mAh LiPo battery)
  MAX8856 ^{UNDER DEVELOPMENT}