DIY Dyno ( hardware and software opensource )

It is someone interested in a DIY Dyno ?
so far
custom board with :
ft232rl ( usb-serial )
atmega328 (arduino firmware)
mcp3208 (12bit adc )
mpxh6400 ( 4 bar map )
2x ina125 ( load cell amp )
2x rpm ( engine and roller )
2X 0-5 wb02 imput
2x egt
1x 12 bit optional input
4x opto out ( driving brake and misc )
weather station ( hih humidity senzor , lm35 temp senzor , mpx 4250 ).
software : working spi , sending string , labview bazic app

The project will be open source .

egt test Dyno board egt test - YouTube

The schematic and pcb are in eagle ... and software is labview ( i am noob at code .... and it is just for test the hardware . far from working software).

Need some help with arduino code and maybe use processing instead of labview .
Tanks in advance for your ideas / support / test

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4 Bar MAP? 9,999 RPM High expectations?

What are you planning for hardware?

Is this going to be a flywheel type acceleration dyno or a dyno that can be loaded and maintained at a given load for testing?

interesting, but what are you planning on using it for?

(car guy here, eddy current chassis dyno's are the common platform for tuning)

I have a eddy curent brake ( 1000nm+) from a volvo truck .The power supply is 24v/100amp ( backup ship battery ...) and it will be driven by IGBT module . But it could be adapted for water/oil pump. I want to use it to tune efi .

4 bar = 3 bar boost and 10000 rpm .... we have a honda in city that does 11 000 rpm and 2.5 boost ( darton b18 , worked head , borgwarner s300 turbo , forged piston /rods .......... )

Tanks in advance .

the arduino code :
serial comands :
1 - light a led ( test)
2 - light a led ( test)
3 - sends temp , kpa , rh ( weader station )
? - mcp adc ? adc1 , adc2 ... , adc8 , rpm , roller rpm ,

need to do : implement rpm and drum rpm ( on int0 and int1 ) , and pid for load control ( rpm or speed setpoint ) . Can anybody help ?

sketch_sep02a.ino (3.3 KB)

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#raceautoelectro and ‪#‎DiyDyno‬ for progress : #DiyDyno Update ! thanks to... - Race Automotive Electronics | Facebook . i will post the final software and hardware here .

working brake rpm and engine rpm , data save , bazic graph .

Any progress with the load control for eddy current brake?

Cool project!!
how is it coming along?

I would like to be a part of it if possible, i have alot of skills whithin steel and engineering, and i have made som plans/drawings for a rolling road dyno, diy waterbrake and other stuff, which i would like to share.
However. I need help with programming the arduino and the front end.

I tune engines and make EFI conversions, therefore i need a steady state dyno controller for tuning.

i started out for a few years ago with my dyno project, but then i got divorsed, and i could'nt find the time for finíshing the project, until now, were i control my own time :slight_smile:

back then i did some coding i arduino, so i could control the brake to hold a steady rpm on the rollers, i set the target rpm with a potmeter, used a PID controller, so no matter how much load i put in, they kept the same rpm, i had a 20x4 display where i could monitor the rpm, target rpm and torque, i never got around to make a frontend, so i could make a graph/log etc.
anyway. the harddisk on the computer i used is dead, and i have no backup :frowning:
I dont remember how i did the code, so i'm pretty lost right now, on the programming side anyway.

I really hope we can make a good coorporation, and a good useable product twogether everyone.

Thanks in advance
Palle

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Hello gerad89 , any updates with you progress?

Have a look at Dtech's approach

DYNertia3 analysis software is provided with our whole range of dynamometer systems.

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can I copy your program?
may you share the processing program