hw_sensor

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@larus-breeze

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README

PCB Concept

Format to fit aluminium enclosure: 1455K1202 (120x78x43 space for DGNSS) or 1455J1201 (120x78x27 for single GNSS)
ESP32-WROOM-32U for an improve connectivity. Could also be used to flash the STM32F4 via WIFI. Example for WIFI / TCP: https://github.com/AlphaLima/ESP32-Serial-Bridge connection. Simultaneously two smartphone connections in a double seater are possible via wifi.
Footprint for a milled 5mm pressure hose connector on the edge.
U.FL connectors for GNSS and Wifi/BT antennas via external SMA-Pigtails.
USB-C connectors for GNSS, ESP32 and STM32
2 RJ45 connectors for CAN and RS232

Changes Version 2.0

Changed the PCB format to fit the aluminum enclosure 1455K1202 or 1455J1201.
Redesigned the analog 3.3VA voltage supply with a capacity multiplier and a separate LDO after the 5V Buck converter.
Introduced a separated analog section on the board and placed the regulator, filter and sensors there.
Replaced the Bluetooth module with an esp32 for improved Bluetooth and WiFi connectivity.
Removed the low cost Gyro, Acc and Mag components and added 3 mounting holes in 0.8inch distance for sparkfun headers.
Removed the second MS5611 and improved the layout.
Replaced the existing USART-3 connector with a Pixhawk standard JST-GH 6 pin Connector to connect and supply DGNSS simpleRTK2B+heading modules. 1: 5V_IN, 2: RX (3.3V level), 3: TX (3.3V level), 4,5: Not connected, 6: GND.
Changed to two single RJ45 connectors for CAN and RS232.
Added a footprint for a milled pressure hood including mounting screws to connect static and pitot on the PCBs edge.
Redesigned the digital voltage supply regulators and added sufficient capacity.
Added a separate boost converter to boost the USB Voltage.
Added a Larus Symbol on the board.
Changed the SMA to a u.fl connector for the GNSS Antenna.
Added active current limiting of GNSS antenna feed with circuit taken from the U-Blox F9P hardware integration manual.
Added ESD-protection diodes for voltage supply, GNSS antenna and USB connectors.
Added thermal reliefs on copper fills to improve hand solder-ability.
Added more status and error LEDs and labeling.
Connected USB, RJ45 shields and aluminum enclosure to a separate shield ground net. Routed the shield ground around the PCB and connected it on one point with a ferrit to ground.
Changed the RJ45 CAN pin out so that a twisted pair of a standard patch cable is used.

Comments

PCB Concept

Format to fit aluminium enclosure: 1455K1202 (120x78x43 space for DGNSS) or 1455J1201 (120x78x27 for single GNSS)

ESP32-WROOM-32U for an improve connectivity. Could also be used to flash the STM32F4 via WIFI. Example for WIFI / TCP: https://github.com/AlphaLima/ESP32-Serial-Bridge connection. Simultaneously two smartphone connections in a double seater are possible via wifi.

Footprint for a milled 5mm pressure hose connector on the edge.

U.FL connectors for GNSS and Wifi/BT antennas via external SMA-Pigtails.

USB-C connectors for GNSS, ESP32 and STM32

2 RJ45 connectors for CAN and RS232

Changes Version 2.0

Changed the PCB format to fit the aluminum enclosure 1455K1202 or 1455J1201.

Redesigned the analog 3.3VA voltage supply with a capacity multiplier and a separate LDO after the 5V Buck converter.

Introduced a separated analog section on the board and placed the regulator, filter and sensors there.

Replaced the Bluetooth module with an esp32 for improved Bluetooth and WiFi connectivity.

Removed the low cost Gyro, Acc and Mag components and added 3 mounting holes in 0.8inch distance for sparkfun headers.

Removed the second MS5611 and improved the layout.

Replaced the existing USART-3 connector with a Pixhawk standard JST-GH 6 pin Connector to connect and supply DGNSS simpleRTK2B+heading modules. 1: 5V_IN, 2: RX (3.3V level), 3: TX (3.3V level), 4,5: Not connected, 6: GND.

Changed to two single RJ45 connectors for CAN and RS232.

Added a footprint for a milled pressure hood including mounting screws to connect static and pitot on the PCBs edge.

Redesigned the digital voltage supply regulators and added sufficient capacity.

Added a separate boost converter to boost the USB Voltage.

Added a Larus Symbol on the board.

Changed the SMA to a u.fl connector for the GNSS Antenna.

Added active current limiting of GNSS antenna feed with circuit taken from the U-Blox F9P hardware integration manual.

Added ESD-protection diodes for voltage supply, GNSS antenna and USB connectors.

Added thermal reliefs on copper fills to improve hand solder-ability.

Added more status and error LEDs and labeling.

Connected USB, RJ45 shields and aluminum enclosure to a separate shield ground net. Routed the shield ground around the PCB and connected it on one point with a ferrit to ground.

Changed the RJ45 CAN pin out so that a twisted pair of a standard patch cable is used.

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PCB Concept

Changes Version 2.0

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PCB Concept

Changes Version 2.0

Changes Version 2.2

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