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Feeds 21:34 2 A: Controlling 28byj48 bipolar convert with l293d ic Question Stepper 28byj48 unipolar OK with uln2003 Slit the red wire so there are only two windings Measured ohms across coils. Pin […]

Calibrate PH-4502C pH meter Ask Question 0 I have a pH meter (DIY-4502C) hooked up with Raspberry Pi. However, the instructions to calibrate is in Chinese and seems outdated. Does anybody know how to […]

Calibrate PH-4502C pH meter Ask Question 0 I have a pH meter (DIY-4502C) hooked up with Raspberry Pi. However, the instructions to calibrate is in Chinese and seems outdated. Does anybody know how to […]