SparkFun MicroMod Update Tool

The SparkFun MicroMod Update Tool is a sophisticated device designed to interface with the MicroMod Asset Tracker Carrier Board. It allows for direct communication with the u-blox SARA-R510M8S module through the advanced u-blox m-center cellular evaluation software. Simply connect a USB-C cable and you're ready to go.

The Update Tool is not a full MicroMod Processor Board, but rather a simpler device that includes a CH340C USB-Serial converter. This gives you full access to all eight pins of the SARA-R5’s UART interface via the Asset Tracker’s USB-C connector. Essentially, it acts as a bridge from USB to serial.

The device features eight pairs of Plated Through Hole connections for the UART signals. These can be used to connect directly to the SARA UART using 3.3V signals. The split pads on the rear of the Tool can be opened to isolate the CH340C completely, allowing the pins nearest the M.2 to link directly to the SARA UART.

Features:

• CH340C USB-Serial converter
• Eight pairs of Plated Through Hole connections with split pad jumper links for:
  • Serial Transmit (TX)
  • Serial Receive (RX)
  • Request To Send (RTS)
  • Clear To Send (CTS)
  • Data Terminal Ready (DTR)
  • Data Set Ready (DSR)
  • Ring Indicator (RI)
  • Data Carrier Detect (DCD)
• LED indicator for:
  • Power (3.3V)

Documents:

MicroMod Update Tool Documentation:

• Schematic
• Eagle Files
• Hookup Guide
• Board Dimensions
• GitHub Hardware Repo

u-blox Documentation and Software:

• u-blox m-center
• u-blox EasyFlash v12.08 Download
• Firmware Update App Note

MicroMod Documentation:

• Getting Started with MicroMod
• Designing with MicroMod
• MicroMod Info Page
• MicroMod Forums