# Changelog
All notable changes to the EyeRIS KiCAD Schematics will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [1.0.2] - 2022-07-18 RevC

### Changed

- Bumped Rev to C
- Removed support for two separate battery packs. Either use one pack of the current 4S LiIon config, or a custom pack with 2P4S
- Replaced DIP switches with solder jumpers for selecting RS-232 or UART for serial comms
- Added thermal vias and heatsink pads for Boost converter Sync and Ctrl FETs
- Updated sync FET to larger and more efficient part
- Cleaned up tracks and vias
- Cleaned up silk screen

## [1.0.1] - 2021-04-08 RevB

### EyeRIS-LRAUV-Control

### Added

- Each strobe FET (Q12,14,16,18,20,22,24,26,28,30) now has a 30k resistor between the gate and trigger FET. This keeps with gate-source voltage in spec during the flash
- The capacitor bank discharge FET (Q4) has a 20V Zener diode between gate and source to keep gate-source voltage in spec

### Changed

- The capacitor discharge resistor (R25) was increased from 49.9 Ohm to 500 Ohm to limit discharge current and power dissipation
- The boost-enable pullup resistor (R157) was changed to 30k and connected between gate and Vin
- The battery charger sense resistor network (R16 and R15) were corrected to R16 = 0.015 Ohm and R15 = 10 Ohm, this fixed an error in part substitution
- Q5 and Q8 were changed in the schematic to a new part that is available for order: SISS12DN footprint is the same


## [1.0.0] - 2021-02-15

### EyeRIS-LRAUV-Control

### Added

- OR-ing diodes for both battery inputs (completed)
- Fuses on both battery inputs (completed)
- Discharge FET for strobe cap bank on boost convert power loss (completed)
- Revise internal battery pack to 8-cell custom pack

### Changed

- Fixed typo in DS3231 wiring between Vcc and Bat
- Fixed miss-wiring of SDA and SCL into SX1509
- Tied SHDN pin on LTC2066 chips to V+ per datasheet rec.



## [0.9.0] - 2021-02-08
### Added
- Import of Strobe projects
- Initial Version of LRAUV control board

## [0.8.0] - 2020-12-01

### Changed

- Final version of revB EyeRIS-Strobe

## [0.5.0] - 2020-06-01

### Added

- RevB EyeRIS-Strobe

## [0.1.0] - 2019-06-01

### Added

- EyeRIS-J-Box project