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Welcome to the wvc700r3-life-better-mppt wiki!

This is the place for some illustrative photos to show the changes

Factory default pictures

STEP 1: Remove and bridge L1 coil:

STEP 2: Remove Z3 relais:

STEP 3: Bridge Z3 Pins:

STEP 3: Install additional OVP:

STEP 4: Move R42 (SMD 0603 8,2k):

STEP 5: Modify R20: Solder a resistor with 39K (SMD 0805) in parallel to R20 to increase the clock frequency of the switching converter from 55 to 70kHz.

STEP 6: Connect ATTINY85 to circuit board: