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General • Re: Digital Voltmeter with 4 ½ digits - Raspberry Pico

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Testing the project:

Accessing the Raspberry Pico's serial/USB console using the Serial Debug Assistant program.

https://apps.microsoft.com/detail/9nblg ... t-BR&gl=BR

Configuring the program for Raspberry Pico console parameters on Windows.
Serial debug assitant 01.png


By varying the input voltage with the potentiometer and measuring the voltage with my DVM Fluke 17B+ (3 measurements per second), I performed these tests.
(DVM - Raspberry Pico: 5 measurements per second)

Code:

Calibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20283 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20098 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20201 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20247 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20105 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20209 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20260 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20051 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 20236 ticks // VIN Voltage: 0.025 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617357 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617715 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617481 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617506 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617769 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617509 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617524 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 617764 ticks // VIN Voltage: 0.772 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 2000302 ticks // VIN Voltage: 2.500 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 2000415 ticks // VIN Voltage: 2.501 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 2000817 ticks // VIN Voltage: 2.501 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 2000378 ticks // VIN Voltage: 2.500 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 2000536 ticks // VIN Voltage: 2.501 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 2000764 ticks // VIN Voltage: 2.501 VCalibration: 350 // Voltage Auto Zero: 0.046 V # VIN Period: 2000302 ticks // VIN Voltage: 2.500 VCalibration: 350 // Voltage Auto Zero: 0.045 V # VIN Period: 2000519 ticks // VIN Voltage: 2.501 V

Statistics: Posted by Gustavo_Murta — Wed Sep 17, 2025 4:05 am



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