Shared Projects by Mark-Pickhard

This is like a KY-040 module only no +V, no pullups, proto area and much smaller

All dimensions below are mm.

• Encoder Footprint: 2.5/5.0 pitch, 15.5 separation, 1.05 dia hole
• Connector & Prototype Area: 2.54 pitch, 0.9 dia holes
• Connector: A/Clk, B/DT, S/Sw, G/Gnd/Common
• The intention is the encoder is on the top side and the header connector is on the bottom side

See This Document for details about this sensor

Link to the Schematic

In addition to the core functionality of a 5V power supply and an AC relay, this includes options for:

• Two different AC relays
• A voltage-presence sensor
• An additional off-board sensor
• A 3.3V regulator
• A Wemos-D1-Mini module

This has a beeper and LED that are switch-selectable to turn on for continuity (conduction) or for discontinuity (open circuit). See Hackaday Project Discontinuity / Continuity Tester

Details are at Hackaday at DB25 IDC26/Header Breakout Board.

This connects up to one each of D-Sub DB25M, DB25F, and IDC26 13x2 0.1" 2.54mm header/ribbon cable. All three connectors are wired together in the standard fashion (DB25-1=IDC26-1, 2=3, 3=5, …, DB25-13=IDC26-25, DB25-14=IDC26-2, 15=4, 16=6, …, 25=24). This can also be used with DB15 and DB9 connectors. The edge of the board sits between the two rows of Dsub pins and is surface soldered. The Dsub DB connectors can be solder cup (preferred) or straight pin (which have to be bent inward toward the PCB for a friction fit before soldering). Solder the D-Sub(s) before soldering in a header.