RAMPS 1.4 Controller:RepRap Mega Pololu Shield, or RAMPS for short. It is designed to fit the entire electronics needed for a RepRap in one small package for low cost. RAMPS interfaces an Arduino Mega with the powerful Arduino MEGA platform and has plenty room for expansion. The modular design includes plug in stepper drivers and extruder control electronics on an Arduino MEGA shield for easy service, part replacement, upgrade-ability and expansion. Additionally, a number of Arduino expansion boards can be added to the system as long as the main RAMPS board is kept to the top of the stack.DRV8825 Driver Module:This DRV8825 Stepper Motor Driver Module is upgrade of A4988.Simple step and direction control interface.4-layer, 2 oz copper PCB for improved heat dissipation.Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step.Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor's rated voltage to achieve higher step rates.Package List:1x RAMPS 1.4 Controller5x DRV8825 Driver4x Heat Sink1x Screwdriver
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