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

The format is based on [Keep a Changelog](http://keepachangelog.com/).

## [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