Arduino Forum

Topics => Science and Measurement => Topic started by: YacBr on Jun 05, 2018, 10:38 pm

Title: Alternative electric sine wave 50Hz analogread ADC for Raspberry
Post by: YacBr on Jun 05, 2018, 10:38 pm
Hello !
i want to use my arduino board as an ADC for the raspberry to make an digital oscillo !
the signal which is acquired is an alternative sine wave with 50 Hz frequency ,
any help ?
Title: Re: Alternative electric sine wave 50Hz analogread ADC for Raspberry
Post by: MarkT on Jun 07, 2018, 09:34 pm
Which arduino board?  What sample rate do you want?  Total samples fit in RAM?
Title: Re: Alternative electric sine wave 50Hz analogread ADC for Raspberry
Post by: wvmarle on Jun 10, 2018, 01:23 pm
It makes more sense to me to use an external dedicated ADC - you can easily get higher resolution and higher sampling rates for less cost and less effort than doing this through an Arduino. Mind that the Arduino's ADC can do a mere 9k sps at 10 bit resolution. Good enough for many applications, but for a scope it's pretty sad.

By the way, about USD 200 buys you the DSO Quad from Seeed Studio, I got one and really like it. For a scope it's not fast but it can easily display 1-2 MHz signals which is far more than an Arduino could ever dream of.
Title: Re: Alternative electric sine wave 50Hz analogread ADC for Raspberry
Post by: MarkT on Jun 28, 2018, 12:49 pm
I think you need a hat.

Perhaps this one or something similar: https://www.diymat.co.uk/product/universal-plus-hat-raspberry-pi/