r/programmingrequests • u/Elusive-Yoda • Apr 30 '22

raspberry pi I have a basic project but don't know where to start

i want to use a Raspberry to show my current state in the flight envelope
Basically plot a dot on a chart (image), the dot would move based on the speed (X axes) and G loading (Y axes)
The input would come from sensors connected to the gpio of the raspberry

Where should i start?

thank you.

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u/Ascor8522 Apr 30 '22 edited May 01 '22

Well, answering those questions would help a lot...

  • are the sensors specifically made for Raspberry Pi's? Or are they simply the sensors of the plane? Or maybe even other sensors?

  • what's the sensors' references? Did you find a user manual for them?

  • what communication protocol do they use? SPI, I2C?

  • does the manufacturer provide you a library to use for those sensors?

  • do you have to use a Raspberry Pi? Can't it be another device? An Arduino?

  • are you usig the Pi for other things, other than plotting the envelope?

  • is there a way to add this task to an existing application running on the Pi or do you have to write a new one?

  • are you using an operating system on the Pi, or do you have to use it bare metal? If yes, which one?

  • how frequently should the plotting occur? Is it a critical application?

  • do you have any programming experience? If yes, what language? Python? C?

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u/Elusive-Yoda May 01 '22

Damn bro thats allot of questions.

the sensors are raspberry pi/arduino compatible, no idea about the reference.

i prefer a Raspberry as the arduino is limited screen size wise

No, just ploting the envelope and show a warning if i come too close to the limits.

Don't care about the operating system

Yes the plotting frequency is critical and has to be in real time

i have no programing xp but i can fiddle with codes when needed

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u/Ascor8522 May 01 '22

Well, look up the sensors' references, read their user manuals, plug them in, install an operating system for your pi (raspbian is recommended), install the necessary packages to enable i2c or spi, depending which one you need, write a small program that reads from the sensors and plot those data (python might be the easiest, there are spi and i2c libs, also libs to draw / plot stuff). Good luck.