Green Team Twente is the multidisciplinary student team that builds a hyper-efficient hydrogen car. Since 2012, the year Green Team Twente was born, we have been building fuel-efficient hydrogen cars at the University of Twente in Enschede, the Netherlands. Our goal is to drive as efficient as possible and to show the world that driving on hydrogen is already a great alternative to driving on fossil fuels, next to battery electric vehicles. We do this by building cars that look similar to city cars, allowing people to see themselves driving in them in the near future.
Below you can see the schematic of the steering wheel PCB that will go into our steering wheel. Except for the throttle and mechanical brakes, the driver will operate the entire car using the buttons attached to this PCB. It will also feature an OLED screen, where speed and other relevant information will be presented.
In this design two data busses are implemented: I2C for the GPIO expanders and SPI for the OLED display. To expand the GPIO of the LPC chip, we use NXP’s PCA9555A chip. Furthermore, two buck converters (to scale down from 48V in the power line of the CAN bus) and linear voltage regulators are implemented for the multiple voltages that are required at the board, such as the OLED display (3.3V, 3.5V, 12V), the microprocessor (3.3V and 5V) and GPIO (5V).
After the designing process, the composition will be uploaded to Eurocircuits and after a few days, we have some happy electrical engineers, eager to make the PCB functional.
With the experience of last year and a having a strong electronics team that have made a completely renewed inside, we hope to finally reach the 1000 km/L milestone! We are glad to have Eurocircuits as one of our largest partners and we are looking forward to our collaboration in the coming years!
Feike van Veen
Green Team Twente
University of Twente, Auke Vleerstraat 3B, 7521 PE, Enschede, The Netherlands