Untighten the screws and slide the stripped wires underneath, and retighten them. Strip these wires and connect them to the power supply unit s L, N, G nodes respectively. If that s the case, use a multi-meter to determine the L, N, and G nodes). Cut the end of the power plug (not included in the kit) to reveal the three wires: Brown, Blue, Green (you might get a different set of colors depending on your power plug. Switch to the correct voltage before use. Connect the Power Supply If you are in a region with 110V outlet, first open the case and and switch to the 110V mode. The thermistor connector does not have a particular orientation.Ħ 4. If you find the motor spinning the opposite direction later, simply disconnect and flip the connector (make sure you do this while the power is off, otherwise you risk frying the Pololu boards). This Instructables article gives a detailed step by step guide to crimping connectors: When crimping the motor connectors, follow the Black-Green-Blue-Red order. It might be easy to use a crimping tool (the best place to find one is Ebay or Radio shack), but needle nose pliers also work. You need to crimp the Dupont connector pins and attach the connector shells. Crimp Connectors Motors, hotend thermistor, and the heatbed thermistor have bare wires. Make sure the Potentiometer on the Pololu stepper is away from the side labeled D10 D9 D8. Install the heat sinks on the Pololu steppers, and make sure the heat sink are not touching multiple components on the Pololu stepper (the clearance could be small, but it is there!) Install the Five Pololu steppers in the boxed pins shown on the left picture. We have heard numerous cases where these steppers got fried because of incorrect orientation. MAKE SURE THE ORIENTATION IS CORRECT AS SHOWN BELOW! The potential meter (outlined in red on the right picture below) should be facing away from the D10 D9 D8 side on the RAMPS 1.4 shield. The Mega 2560 board s USB side is directly under RAMPS 1.4 shied s D8 D9 D10 area.ĥ Stack up the RAMPS 1.4 shield on top of Mega 2560 Board Next stack the Pololu steppers on top of the RAMPS 1.4 shield. Make sure the orientation is correct as shown above. Connect the Boards Stack the RAMPS 1.4 shield on top of the Arduino Mega 2560 board. To have the most precise stepping (1/16 micro stepping), insert three jumpers to each of the areas outlined below: Install all jumpers to the orange area to ensure the most precise stepping If you would like to learn about other modes of stepping (full stepping, half stepping, 1/8 stepping, etc.), please refer to this article: These modes are not suitable for 3D printer motion control, but could be useful for other projects. Insert jumpers to RAMPS 1.4 The jumpers (in the plastic bag below) control the precision of the motor movement. It can control up to 5 stepper motors with 1/16 stepping precision and interface with a hotend, a heatbed, a fan (or a second hotend), a LCD controller, a 12V (or 24V with appropriate modification) power supply, up to three thermistors, and up to six end stoppers. It will run 5 steppers and 4 servos plus a hand full of sensors.1 RAMPS 1.4 Assembly Guide 3D Printer Czar Version 1Ģ Table of Content Getting to know RAMPS Insert jumpers to RAMPS Connect the boards Crimp Connectors Connect the Power Supply Connect the Restģ Getting to know RAMPS 1.4 RAMPS 1.4 is probably the most widely used electronics for RepRap machines as of March It consists of a RAMPS 1.4 shield, an Arduino Mega 2560 board (or a clone), and a max of five Pololu Stepper drivers. Thank you John! I did not know that I needed to add a jumper to get access to my power supply on the servos. So, I jumpered the indicated pins and had the full power of my ATX supply which I have hacked into a very nice benchtop power supply. You can also leave this pin not connected if you have no plan to add extra servos. Since there is not a lot of extra power from the Arduino's power supply you can connect it directly to your 5V power supply if you have one. It is designed so that you can jumper it to the VCC pin and use the Arduino's power supply to supply 5V for extra servos if you are only powered from USB or 5V. The 5V pin in that connector on RAMPS only supplies the 5V to the auxiliary servo connectors. I went looking in the docs and found this. I didn't know that the power for the servos required a jumper! John rightly saw that I had a current problem.
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