[Facts] Raspberry Pi + I²C + MCP23017: digital output toggle timespan (Bash, Python, C)

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purpose: measuring the timespan between rising/falling-edge (=off/on/off-change) of a digital-output-bank (GPA0…GPA7) testing equipment: -Raspberry Pi 3 Modell B-I2C-adress of MCP23017-chip = 0x20-MCP23017 register-adress of 8 digital-outputs: 0x14-Owon SDS7102 digital ocsilloscope conclusion: I²C-baudrate bash Python C 100.000 5,18 ms @ 75 … Continued

[FAQ] QElectroTech

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Q: How to show power-contacts in contact-table?A: menu “project” –> menu-entry “project-properties” –> Tab “new folio” –> Tab “cross-references” –> type-entry “coil” –> enable “show the power contacts in the cross” Q: What is the difference between “label formula” and … Continued

Test: Uni-T UT612 LCR-Meter

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manufacturer: Uni-T modell: UT612 LCR-Meter (2015 modell) calibration: before measurement (open circuit and shotcut) measurement: with supplied measuring bridge testobject: 2x foil capacitor (manufacturer: Yageo, C = 220 µF, Umax = 250 V, SEK 105°C, 08/2008)   Results for capacitor … Continued