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The GT2 pulley with 60 teeth or grooves is one of the best choices for 3d printer construction or XYZ linear motion for small CNC because the gt2 pulley tooth profile is anti-backlash
first stage K-input (active LOW)
NodeMCU is an open source development board and firmware based in the widely used ESP8266 -12E WIFI module
Opto Endstop will immediately output the digital control
a reset button
Nut Block for 8mm ACME Lead Screw pwm The GT2 pulley with 60This 8mm Acme Nut Block is an easy to assemble low cost choice for any lead screw linear motion design. You mount plate on the ACME nut block and start moving it at once using stepper motor as the drive power. Note ACME (tarapazoidal) here means the type of the thread of the lead screw on which we mount the moving nut block. Specifications Pitch: 2mm Lead: 8mm Material: Delrin Thread Type: ACME (Tarapazoidal) 8mm ACME nut block detailed dimensions