70 lines
1.8 KiB
Markdown
70 lines
1.8 KiB
Markdown
# Change Log
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](http://keepachangelog.com/).
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## [v4.4] - 2019-01-16
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### Removed
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- Removed the on-board Sim Chip, to allow safest possible Sim-Card production.
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## [v4.3] - 2018-11-26
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### Changed
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- Set all vias tented after some production errors came up.
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## [v4.2] - 2018-09-18
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### Added
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- Added a debug UART connector.
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## [4.1] - 2018-07-20
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### Added
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- Added snubber and rise-time limitation to buck converter.
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- Minor Version resistors to indicate x.0 through x.7
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### Changed
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- Connected temperature address pins to ground [Bugfix]
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- Improved some modem and MCU ground connections.
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- Removed ground from under the GPS antenna [Bugfix]
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- Added small amount of extra input capacitance to board connectors
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- Made the thermal-sensor cut-out a bit deeper for even better insulation from the main PCB body.
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## [4.0] - 2018-02-23
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### Added
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- On-board LTE and GPS antenna
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- LTE RF Diversity connector
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### Changed
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- Changed from a fixed modem to a pluggable modem
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- DC/DC Layout improvement
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- Changed from 1-wire thermal sensor to standard I2C type
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- Placed thermal sensor on semi-floating peninsula for better ambient response.
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- Added a GPS chipset external to modem.
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- Added RF anti-pads and tear-drops for slightly improved transmission quality.
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## [3.1] - 2016-09-27
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### Changed
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- Changed SIM-card connector
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- Update version strapping
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### Removed
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- Modem 32K clock to microcontroller
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## [3.0] - 2016-06-03
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### Added
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- Added Ethernet interface (for future use)
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- Added SIM-chip in favor of SIM-card connector
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### Changed
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- Increased 3.7V supply to 4.0V (swapped power-supply)
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- Increased 3.0V supply to 3.3V
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### Removed
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- Removed 2nd microcontroller
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## [2.01] - 2016-01-26
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## [2.0] - 2015-06-14
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## [1.0] - 2015-03-18
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