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By ratter
#39655
Hi
I need to build a pwm signal to voltage convertor for a turbo speed sensor to communicate with my data logger
the sensor creates a 5 volt pwm signal possibly up to 6000 Hz and I need to convert this signal to a analog 05 volts
I will most likely be using a Arduino Nano board (unless somebody recommends something different) but are not very good at coding, so any help or recommendations would be appreciated
By ratter
#39657
Thank you for the link
I'm relatively new to this stuff, with that set up in the link, is that using the Arduino to create a pwm?
I'll have a pwm signal from a speed sensor and want to convert that to 0-5v
By theonewithin
#39659
ratter wrote:
Mon Dec 02, 2019 7:12 am
Thank you for the link
I'm relatively new to this stuff, with that set up in the link, is that using the Arduino to create a pwm?
I'll have a pwm signal from a speed sensor and want to convert that to 0-5v
Read the link....


If you can't understand it then there is little hope you will be able to get what you want.
By JHolland
#39660
If you are only sending the signal into the Arduino then you may only need the RC. You need to determine what frequency range you need to measure and how quickly the turbo will accelerate and decelerate to determine the time constant.
By JHolland
#39661
I think that you may be going about this the wrong way - converting to analogue will give a poor response, you should really use an input capture channel to measure the period.
By brenyw
#40486
If you are using a nano then it's pretty simple,, you can just use it to measure the frequency then output a proportional voltage to one pin. You measure the frequency by either measuring the period or counting the pulses over time, or a combination of the 2 depending on the frequency involved. The only tricky bit is getting a clean pulse to measure and running the nano from a good voltage supply.
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