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Post: The performance problems you are having are coming from using Python. Python is an interpreted language which has a far lower performance than compiled programming languages like C or C++. To get the most performance out of the ADC DAC Pi I would recommend using a compiled programming language like C. To give you an idea of the performance difference I rewrote your program using the C version of our ADC DAC Pi library and ran it on a Raspberry Pi B 3+. The C program takes approximately 22.3 milliseconds to complete the same 10000 loops as your python program. The code for the C program is shown below. You can download the ADCDAC Pi C library from our [url=https://github.com/abelectronicsuk/ABElectronics_C_Libraries]Github repository[/url]. [pre][code]/* * test.c * compile with "gcc ABE_ADCDACPi.c test.c -o test" * run with "./test" */ #include <stdio.h> #include <stdint.h> #include <sys/time.h> #include <time.h> #include <unistd.h> #include "ABE_ADCDACPi.h" void clearscreen () { printf("\033[2J\033[1;1H"); } int main(int argc, char **argv){ setvbuf (stdout, NULL, _IONBF, 0); // needed to print to the command line struct timeval t1, t2; double dt; double d[10000]; set_dac_gain(1); // start timer gettimeofday(&t1, NULL); int i; for (i = 0; i <= 10000; i++){ set_dac_voltage(1, 1.5*i/10000); d[i] = read_adc_voltage(1, 0); } // stop timer gettimeofday(&t2, NULL); // compute and print the elapsed time in millisec dt = (t2.tv_sec - t1.tv_sec) * 1000.0; // sec to ms dt += (t2.tv_usec - t1.tv_usec) / 1000.0; // us to ms printf("%G",dt); return (0); } [/code][/pre]