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In this step we are constructing the frame.
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You will need 4x T slot 20x20 L160, 9x T slot 20x20 L102, 20x Hidden corner connection slot 6.
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Start by assembling using a 2mm Allen key.
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Beware of the correct hidden corner connection orientation.
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You can find the assembly diagram on the next step.
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If you purchased square nuts that only fit into the slot from the end, be sure to insert them before assembling the frame with the hidden corners.
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You should now have a complete frame.
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Make sure you dont fasten the holding connectors for the extra L102 beam on one side.
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Beware of the orientation (short side vs long side) of the hidden corners!
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For this step you will need:
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3D printed: Axis side with homing sensor, Axis side, 2x Ball bearing housing
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8x M4-20 screws, 8x M4 nuts
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2x Ball Bearing 6008ZZ (or appropriate for your tube diameter)
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Insert the 8 nuts in the pockets of the axis sides.
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Attach the ball bearing housings on the back of each axis side and fasten it with M4-20 screws as shown.
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Finally, place the ball bearings inside the pockets created.
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In this step you will need:
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1x side assembly (the one without the homing sensor holder)
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4x M4 slot 6 nuts, 4x M4-10 bolts
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Screw the M4-10 bolts through the side assembly as shown on the second picture and attach the M5 slot 6 nuts
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Finally slide the whole piece inside the frame as shown (bottom side touching the frame) and secure it by screwing the 4 M4-10 bolts.
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In this step you will need:
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3D Printed: Worm gear
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Thread lock glue
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2x M5 nut, 1x M5 washer (wrong in the picture), 90mm M5 threaded rod
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Apply glue as shown.
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Follow the diagram for the dimensions.
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In this step you will need:
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The previous worm gear assembly.
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3D Printed: Worm mount
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2 ball bearings 625ZZ
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4x M4 nut slot 6, 4x M4-10 screws, 2x M4 washer.
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Insert the ball bearings inside the pockets of the mounts. Then screw the bolts into the nuts slot6 as shown in the pic.
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Finally slide the worm mounts in the slot 6 rails as shown. First the one without the gear assembly first, then the second with the gear assembly as shown.
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Don't forget the washer between the ball bearings and the worm gear assembly.
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In this step you will need:
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The second axis side assembly (the one with the homing sensor holder)
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2x M5 slot6 nuts, 2x M5-10 bolts
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2x M4 slot6 nuts, 2x M4-20 bolts
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The stepper motor mount.
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Attach the bolts, slot 6 nuts and the stepper motor mount.
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Finally attach the whole assembly to the frame as shown in the picture.
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You will need:
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The homing sensor electronic circuit
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1x M3 nut, 1x M3-12 bolt, 1x M3 washer (not shown)
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Mount the homing sensor on the axis mount as shown.
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In this step you will need:
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3D printed: Axis spacer collar
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3x M3 nut, 3x M3-10 set screws
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Insert the nuts in the pockets of 3d printed part, then screw the set screws as shown.
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You may need to sand the final surface of your 3D printed part (check how it fits inside the side ball bearings.
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You will need:
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The homing ring part
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1x M3 nut, 1x M3-25 bolt.
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One small piece of aluminum tape (or something that blocks the IR light)
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Insert the M3 nut to axis gear part.
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Pass the axis through:
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Axis collar spacer
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Homing ring
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Axis gear
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Warning: Make sure the hole is facing the top.
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Axis spacer
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Tighten the alen bolts on the axis spacer collar part.
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Open a 3mm hole on the axis and tighten the M3-50.
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Align the homing ring pin to the homing sensor and tighten the screw.
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In this step you will need:
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4x M3-6 /w washers
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NEMA 17 stepper motor
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GT2 pulley 20 tooth 5mm bore
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Pass the pulley through the stepper motor shaft
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Place the motor under the mount and tighten the screws.
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In this step you will need:
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3x M3 nuts
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4x M3-6 Head cap screws
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3x M3-12 Head cap screws
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3D printed part motor_mount_flange
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GT2 pulley 20 tooth 6mm bore
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Bolt the motor on the flange
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Insert the pulley over the motor shaft and bolt the flange, with the motor, on the motor base.
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Loose the screws on the hidden corners in a way that stepper motor can slide towards the worm gear.
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Place the the GT2 timing belt 158mm between the worm and motor pulleys.
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Align the height of the pulleys and secure the pulley on the axis.
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Slide the axis side to tighten the belt and secure the screws and hidden corners
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Push the axis spacer collar onto the bearing and tighten the screws.
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We are going to need:
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40cm of wire for endstops
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Connector for triple pin header
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35 cm cable manager
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Use cable manager to manage endstop and stepper motor cables.
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Connect the endstop.
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In this step you will need:
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1x M3 nut
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1x M3-6 Head cap screw
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1x M2-6 Thread-Forming Screw
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SatNOGS encoder board
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1x D6x2.5 Neodymium Diametric Magnet
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And 3D printed parts: M3_TSlot20_nut, encoder_holder
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Place the nut into the 3D printed part and slide it into the aluminum profile
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Slide The pcb into the 3D printed part and use the M2 screw to gently hold it in place
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Using some cyanoacrylate glue, fix the magnet over the center of the pulley that is over the worm gear
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Bolt and align the encoder over the magnet using the M3 screw
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Assemble the elevation axis like the previous one. The only difference is that the length of t-slots that are parallel to the axis is 180mm and the timing belt is 202 mm.
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Slide the hidden corners in the bottom side of the elevation axis.
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Place the azimuth axis on top of the elevation in a way that the extension of the azimuth axis intersects with the elevation axis. Center it in the other direction.
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In this step you need
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Assembled satnogs PCB controller
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2x M5-14 screws, 2xM5 t-slot nuts
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2x M3-10 screws, 2xM3 nuts
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Make sure you are using the latest controller that can be found here https://github.com/satnogs/satnogs-rotat...
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The controller depicted is an older version.
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