This is the repository for Align Racing's formula student race car's different systems.
Align Racing UiA (AR) is a multidisciplinary student organisation at The University of Agder (UiA), that take part in the world’s largest yearly engineering competition; Formula Student (FS). The organisation continuously consists of around 60 students, from a wide variety of disciplines. The competition includes developing, building, budgeting and marketing a small scale formula type racing car. AR takes this a bit further by having more focus on developing a strong organisation, open for all disciplines, that gives the members a taste of future work-life.
27.07.2019:
- Added: Protection circuit
- Added: Atmega Clock pass-through
- Moved: External oscillator from MCP to Atmega.
28.07.2019:
- Changed: Orientation of tag connector in schematics
- Added: Connector with I/O
- Added: Overcurrent protection with polyfuse
- Added: Overvoltage protection with zener diode
- Added: Reverse polarity protection with diode
- Generated:Bill of Materials
- Added: JAE IL-WX Series 0.8mm Pitch 30 Way connector
- Added: RGB LED
- Added: P-mosfet for reverse polarity-protection
- Positioned power management (OC, OV, RP) in a 12x4mm space.
- Started tracing
29.07.2019:
- Moved: Protection circuit
- Changed board layout
- Changed viasize from 0.2 to 0.3
- Routing of tracks
30.07.2019:
- Added 3D components
- Removed all Tracks
- Added DC/DC converter
- Changed footprint of connector
- Added LP-filter to Atmega Avcc (Datasheet page 348)
03.08.2019:
- Changed folder structure
- Added mounting hole in schematics
- Removed LDO
- Added 5V switching regulator
- Changed Connector footprint
- Added track and via info from JLCPCB (2-Layers)
04.08.2019:
- Completed BOM on Google Drive
- Added 2x 10uF input Capacitor for regulator
- Moved documentation to main
06.10.2019:
- Moved resistors and capacitors away from microcontrollers
- Changed from Atmega328PB to Atmega328P (NB! Need to check circuit PWM and such)
- Disconnected all output pins on the Atmega328P
- Created a ACM simulation folder
- Connected pins that are equal to Atmega328PB
List of possible imporvements for ACM 2019
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Remove the Fuse as it is 20% of the total cost. Change it to a soldered SMD fuse or a diode. % Soruce https://docs.google.com/spreadsheets/d/1aR7CLCnCkN-1Qp3qICuXivDnihjTyPiA6Gjus2cEa0c/edit#gid=311613741&range=R12:R13
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More I/O (Especially 2 interrupt) or change board dimension ratio. (1:1) like a flight controller
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Remove castellated holes, since it makes the boards less reliable, and are also harder to manufacture.
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Change the led to a larger led for easy board manufacturing.
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Change I/O to only one side of the board for hot swap.
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ICSP take a large amout of space, change it to pads or small programming connector.
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Change the width of the PCB to X*2,54mm so that it fits standard pin layout
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Remove clock capacitors as "CSTNE16M0V530000R0" got 15uF embedded. Doesn't not require external load capacitors
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Add a diode with a capacitor after. ACM reset due to low voltage when high current draw.
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Possibility for UART out
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Add low pass filter for the A/D converter (AVcc input) (See page 14 in 328p datasheet)
All content included in this Git repository is under the license:
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
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Under the following terms:
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- NonCommercial — You may not use the material for commercial purposes.
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