"Rear Box" As Multitasking PCB on FS Car

PUT Motorsport, headquartered in Poland, is engaged in an international racing competition known as Formula Student, wherein engineering teams from across Europe vie to construct the finest racing vehicle. Presently, we are in the process of crafting our new generation fully electric racing car. The integration of electric propulsion necessitates a plethora of bespoke electronic systems for effective control. While some of these components may seem rudimentary, they are indispensable as they serve as dependencies for other crucial elements. One such example is the Rear Box, developed by PUT Motorsport.

Features

Communication:

·        2 CAN transceivers

·        UART (internal only)

·        SPI (internal only)

·        I2C (internal only)

Outputs:

·        2 fan drivers

·        2 pump drivers

·        ASSI driver

·        RTDS driver

·        brake light driver

Inputs:

·        12 digital safety inputs

·        2 suspension load cell sensors

·        2 suspension potentiometer sensors

·        2 water pressure sensors

·        2 water temperature sensors

·        monocoque temperature sensors

The whole project including both the hardware, and the firmware is open source. The repository is available at https://github.com/PUT-Motorsport/PUTM_EV_REARBOX_2023

JLCPCB's commitment to excellence and dedication to innovation perfectly align with our team's goals and aspirations. As a leading PCB fabrication house, JLCPCB's support is invaluable in helping us achieve our objectives in the competitive world of motorsport.

Get to JLCPCB now -> https://jlcpcb.com/HAR

Full schematic:

PCB Layout

Now that we’ve got the PCB design, it’s time to order. For that, you just have to go to jlcpcb.com and click on the “Instant Quote” button.

You don’t have to worry about the settings here, because you can adjust everything in the new appeared tab.

JLCPCB is also a sponsor of this whole project (not only this PCB but all the PCBs in the car!). JLCPCB (Shenzhen JLC Electronics Co., Ltd.), is the largest PCB prototype enterprise in China and a high-tech manufacturer specializing in quick PCB prototype and small-batch PCB production. You can order a minimum of 5 PCBs for just $2 (2 layers), just enough to have a few test/spare ones. To get the PCB manufactured, just upload zipped Gerber files.

Then, you have multiple options to adjust the number of layers to your PCB color. Every option here is very clearly marked and described (when you hover over the question mark).

After making sure your PCB looks good – by clicking Gerber Viewer, you can now place the order at a reasonable price. In the case of this project, there is 2$ for 5, 2-layer PCBs and it’s only 3-4 days build time(the time is extended due to the chosen color). To place the order, click on the “SAVE TO CART” button. Fast and cheap, right?

The quality is always really satisfying so I sincerely recommend JLCPCB.