+ (VCC, 3.3–5V — only feeds the two 10kΩ pull-ups on CLK and DT)
SW — built-in pushbutton, shorts to GND when the shaft is pressed (no pull-up on the board for this one: use INPUT_PULLUP)
DT — quadrature output B
CLK — quadrature output A
विनिर्देश
सप्लाई वोल्टेज
3.3–5 V
आउटपुट
2-channel quadrature (CLK, DT)
पुल-अप रेज़िस्टर
10 kΩ on CLK and DT; none on SW
Detents per turn
Typically 20
Rotation
Continuous 360°, no end stop
Push switch
Shorts SW to GND when pressed
कॉन्टैक्ट
Mechanical — debounce needed
नोट्स
Read CLK/DT transitions to determine rotation direction; debounce SW (and CLK/DT) in software, or read CLK/DT from an interrupt on CLK.
The header reads GND, +, SW, DT, CLK top to bottom with the mounting hole above it — most clones keep this order, but check the silkscreen: a few swap CLK and DT.
