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Post: I found that one can "increase" the sampling rate by launching more than one python acquisition script simultaneously (one per ADC Pi board). E.g. with one board @ 12bit I can achieve sampling rate of 24.5 Hz (cumulative for all 8 channels sampled ane after another in continious mode as per example [url=https://www.abelectronics.co.uk/kb/article/1047/adc-sample-rate-comparison]ADC sample rate comparison[/url]) If I sample with the same single script 2 ADC Pi boards, I get half of that, around 12 Hz per 16 channels (here I mean 1 sample is when each of 16 channels takes one reading, so 16 readings=1 sample, so "true" speed would be 16*12Hz, which does not help for "multichannel measurements") Now if I launch 2 python scripts (roughly "simultaneously") instead, one per single ADC Pi board (each sampling 8 channels in cont. mode), they will run on separate CPU-cores (I can see that in "top") and I get effectively 21 Hz sampling rate with 16 channels (2 boards): [pre][code]pi@adc-raspi3:~/ABElectronics_Python_Libraries/ADCPi/demos $ ./continious_1.py & ./continious_2.py [4] 3904 100 samples in 4.720 seconds on 8 channels of board 2 21.185 samples per second 100 samples in 4.720 seconds on 8 channels of board 1 21.186 samples per second [3]   Done                    ./continious_1.py[/code][/pre] Both finish practically identically by time. I used here my old RPi 2, need to try the same with Pi 4 soon... My hope is to use 1 CPU per ADC PI board, so if I can get 8 x 4 CPU = 32 channels per one RPi, that may suffice for my purpose... Alex