![]() ![]() In that case, you can solder the wires directly to the original motor control MOSFET, as shown in the last diagram.īy changing the motor controller, the motor might not turn when the speed setting from candle is too high. Some versions of the woodpecker PCB might not have the PWM motor speed control signal brought out to the header pins. Wire the speed controller according to the diagram. Print MotorControllerBox.stl to cover the speed controller. To mount the speed controller, I removed the 2 outer fins of the heatsink, such that it fits perfectly in between the aluminium frame. We can now install the 48V powersupply on the back of the CNC with some screws. Install them in holders and connect the cables to the remaining wires we routed through the drag chain. Finally, mount the carriage back on the CNC and insert the new spindle motor.Īt this point, we can also add 2 line lasers to indicate the position of the router bit. Print Spindlemount.stl, SpindlemountLaser.stl and Z_leadscrew_stop.stl and reassemble the carriage according to the pictures. Start by taking apart the original carriage: remove the stepper motor, leadscrew, M8 rods and spindle mount. To accommodate the large spindle, we will have to make a new spindle mount. Upgrading it will allow us to cut aluminium quite easily! We will also add a speed controller, which is necessary for softer materials such as acrylic. The spindle is one of the weakest points of this CNC machine. Type $$ to view the current settings Type $22=1 to enable homing Type $27=5 to adjust the homing pull off Type $20=1 to enable soft limits Type $130=300 to set the maximal x dimension (for CNC3018) Type $131=180 to set the maximal y dimension (for CNC3018) Type $132=40 to set the maximal z dimension Type $$ again to verify the changes. Use the Arduino IDE (or any other terminal) to connect to the CNC by opening a new serial monitor (make sure you select the correct baud rate). To do this, connect your CNC to a PC with a USB cable. Soft limits prevent the CNC to crash into its own frame by halting moves which would cause a crash. The homing switches and soft limits must now be enabled in the GRBL settings (GRBL is the software which runs on the microcontroller on the PCB). Plug them into the PCB according to the wiring diagram. ![]() Solder a red and black wire to the limit switch and add dupont connectors to the other end. Use one of the extra wires we ran through the dragchain in the previous step to connect this limit switch to the main board. The Z axis switch is simply screwed into the Z axis mount. Print this piece twice and mount it on the locations indicated in the pictures. The X and Y limit switches are mounted on the brackets which hold the M8 rods by means of LimitSwitchHolder.stl. Homing switches will allow us to home the machine and soft limits will prevent from crashes. Now that the wiring is neat, we can start with the real upgrades. Besides a 3D printer, we'll also need a soldering iron and some basic tools. The necessary files are included in each step, as well as a wiring diagram. There is enough documentation already for the assembly of these kits, so I will focus on the upgrades only. We will start this guide with an assembled CNC kit. Upgrading the spindle to cut aluminium.In this instructable, I will walk you through the upgrades I made to my machine, including: With a few upgrades however, the quality and safety can greatly be improved to turn it into a very potent CNC machine! While they are great machines for their price, their performance is not that terrific. The most common type are the 1610, 2416 or 3018 types, referring to the dimension of their machine bed. CNC machines are more accessible than ever, with the large range of cheap CNC machine kits from China.
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