1.8 KiB
1.8 KiB
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