1.8 KiB

Raw Blame History

Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog.

[v4.4] - 2019-01-16

Removed

Removed the on-board Sim Chip, to allow safest possible Sim-Card production.

[v4.3] - 2018-11-26

Changed

Set all vias tented after some production errors came up.

[v4.2] - 2018-09-18

Added

Added a debug UART connector.

[4.1] - 2018-07-20

Added

Added snubber and rise-time limitation to buck converter.
Minor Version resistors to indicate x.0 through x.7

Changed

Connected temperature address pins to ground [Bugfix]
Improved some modem and MCU ground connections.
Removed ground from under the GPS antenna [Bugfix]
Added small amount of extra input capacitance to board connectors
Made the thermal-sensor cut-out a bit deeper for even better insulation from the main PCB body.

[4.0] - 2018-02-23

Added

On-board LTE and GPS antenna
LTE RF Diversity connector

Changed

Changed from a fixed modem to a pluggable modem
DC/DC Layout improvement
Changed from 1-wire thermal sensor to standard I2C type
Placed thermal sensor on semi-floating peninsula for better ambient response.
Added a GPS chipset external to modem.
Added RF anti-pads and tear-drops for slightly improved transmission quality.

[3.1] - 2016-09-27

Changed

Changed SIM-card connector
Update version strapping

Removed

Modem 32K clock to microcontroller

[3.0] - 2016-06-03

Added

Added Ethernet interface (for future use)
Added SIM-chip in favor of SIM-card connector

Changed

Increased 3.7V supply to 4.0V (swapped power-supply)
Increased 3.0V supply to 3.3V

Removed

Removed 2nd microcontroller

[2.01] - 2016-01-26

[2.0] - 2015-06-14

[1.0] - 2015-03-18