Dondolo Electric Box

thingiverse

This electric box is for connecting the servo, 2 Hotend Fan's and a printer fan on a Ramps 1.4 board. The Fan's are using PWM from Servoports D4, D5 and D6. The servo is connected to port D11. The guide is original from the D.E.I.S.S Extruder https://www.thingiverse.com/thing:651723 The PCB is drawn in Target 3001. I have milled it on my CNC milling cutter. The box is mounted above the servo Extract from D.E.I.S.S Setup Guide: Setup electronics The servo needs to be powerful enough to move the engine and provide the torque to move it against the spring of the levers. The RAMPs (the Arduino Mega) is a very powerful, powerful, and easy-to-use tool that can be used in a wide range of applications. This could be done by adding a 5V regulator which is directly driven by the 12V power supply. I created a small hand soldered PCB which also expands the D4 to D6 to drive a fan. The schematics are shown below. From this PCB, the servo is supplied with 5V as well as the servo signal, the fan fan, the cooling fan and a spare channel for the stepper driver and polyswitch (prevents the bed cut off at higher temperatures) , There are several pre-soldered 5V step-down regulators and fan expanders available on the internet which could be used without soldering. D4 = Print fan D5 = Hotend0 fan (activated at temperature above 50 ° C) D6 = Hotend1 fan (activated at temperature above 50 ° C) D11 = Servo output