Scanse Sweep DIY 3D User manual

1
sweep
A Note About Our Target Audience:
This kit is for those that enjoy DIY projects. It
will require a good bit of tinkering to get the
results you want. If you have questions, which
you likely will, make it an opportunity to
become a member of our forum
(http://community.scanse.io/c/3d-scanner). We
hope you have fun building it and learning how
3D scanners work.
Software for This Project Can Be Found At:
https://github.com/scanse/sweep-3d-scanner
3D Models for This Project Can Be Found At:
https://www.hackster.io/scanse/sweep-3d-
scanner-035a5f
Documentation Revision Information
Rev
Date
Changes
0.93
5/16/2017
Initial Release
0.94
5/24/2017
Updated Sweep Install Photo
0.95
6/19/2017
Updated Sweep Scanner Bracket &
Scanner Cover design
Table of Contents
Introduction.................................................2
Tools Required (not Included) ......................2
3D Printing the Enclosure Parts ....................2
3D Scanner Kit Contents...............................2
Test Fit All Parts ...........................................3
Step 1. Install Bearings in Cover....................4
Step 2. Assemble Limit Switch......................5
Step 3. Install Stepper Motor .......................6
Step 4. Assemble Motor HAT........................7
Step 5. Assemble Female Micro USB Cable...8
Step 6. Install Bubble Spirit Level..................9
Step 7. Install Raspberry Pi Assembly .........11
Step 8. Install 90 Degree Scanner Bracket...12
Step 9. Assemble Battery Holder ................17
Step 10. Install 9 Axis IMU.......................... 20
Step 11. Install Battery onto the Scanner....22
3D Scanner Exploded View

2
These assembly instructions will cover the mechanical assembly, programming and basic use of the
Sweep 3D scanner add-on.
-Soldering Iron and Solder
-Wire Stripper
-Small Philips Head Screw Driver
-2.5mm Hex Key with Ball End
The three main enclosure parts and the cable clip are intended to be printable using a consumer
desktop FDM (fused deposition modeling) style printer. You should get functional results when printing
using a 0.2mm layer height. We have oriented the available STL files in the direction we have found they
print best with the least amount of support material. We found that 20-30% infill works well. Our test
parts were made using standard ABS filament, but PLA or other materials can work too (with PLA you
need to worry about the parts melting in a hot car). You can also have these parts printed by a service
like Sculpteo or Shapeways, but it will cost much more.
Difficult to make parts: The last 3D printed part –the custom Light Pipe, is intended to be printed using
a clear resin with an SLA style printer. We realize this may not be as commonly accessible to most
people, which is why we are offering a kit of parts for sale that includes all the 3D printed parts.
We have assembled all the parts you need to make this project in one convenient kit. It includes about
60 parts, including the five necessary 3D printed parts. The 3D printed parts are made of black ABS, and
are printed at 0.2mm layer heights. The one clear component is printed using SLA technology. The only
thing not included in the kit is a Sweep sensor.
The kit is available for purchase on our website: http://scanse.io/3d-scanning-kit/

3
Our 3D scanner kit includes everything you need to build this 3D scanner, except for tools listed above
When working with 3D prints, it is common for slight inaccuracies to be present. Use a small tool such as
a screw driver to remove all support material and small defects.

4
Parts Needed:
-(3) 8MM OD, 3MM ID, 3MM Wide Bearings
-(3) M3 X 8MM Socket Head Cap Screws
-P0087 –Spherical Scanner Cover, Square 3D printed par t
Make sure screw holes are clear of support material. Push bearings into the slots as shown and install
the screws one at a time using the 2.5mm Hex Key as shown.

5
Parts Needed:
-OdiySurveil (TM) Simulated Roller Lever SPDT AC Miniature Micro Switch
-Female to female jumper wire cable
-10K inline resistor
-Heat shrink tubing or electrical tape
-Phillips Drive, #2-28 Thread Size, 3/8" Length
-P0087 –Spherical Scanner Cover, Square 3D printed part.
-(2) Phillips Drive, #2-28 Thread Size, 3/8" Length
Solder one end of the 10K resistor onto the common pin of micro switch. Cut the jumper wire in half, so
that each piece is approximately 100 mm (4 in) long. Strip the ends and solder one piece to the free end
of the resistor. Solder the other piece to the NC (normally closed) tab of the micro switch. Cover the
resistor with heat shrink tubing or electrical tape.
Install the micro switch into Spherical Scanner Cover in the orientation shown using the two screws.
Make sure the switch operation is not hindered by 3D printed plastic.

6
Parts Needed:
- 0.9deg Round Nema 14 Stepper Motor
- (2) M3x5mm Phillips Flat Countersunk Head Machine Screws
- P0087 –Spherical Scanner Cover, Square 3D printed part.
Cut motor wires to approximately 100mm (4 inches). Strip approximately 6mm (1/4 inch) off the ends.
Screw motor into Scanner Cover in the orientation shown.

7
Parts Needed:
-Raspberry Pi 3 Model B
-Adafruit DC & Stepper Motor HAT for Raspberry Pi - Mini Kit
-2.54mm Pitch Single Row Male 90 Degree Right Angle Pin Header
-Female to female jumper wire
Insert the motor screw terminals into motor HAT in the direction shown, then solder in place.
Next solder the large pin receptacle into the intended location.
Next, to maintain the correct spacing, slide the Female Jumper Wires onto the Pin Headers as shown,
before soldering the headers in place. Once the headers are soldered in place, remove the jumper wire.
Finally, install the motor HAT onto the Raspberry Pi 3 Model B

8
Parts Needed:
-StarTech.com 0.5m 20" Micro USB Male to Micro USB Female Cable (USBUBEXT50CM)
-Double sided tape (included on cable)
-P0090 –Spherical Scanner Cable Clip (3D printed part)
-3.5mm (1/8 inch) Heat shrink tubing
-Motor HAT/Raspberry Pi Assembly
Cut the cable about 100mm (4 inch) from the female end. Strip off the outer rubber shield of the cable
using a wire stripper blade. Separate the red (power) and black (ground) wires from the rest, and cut the
other color wires back around 20mm (3/4 inch). Strip approximately 6mm (1/4 inch) of shielding off the
ends of the black and red wires.
Remove the backing on the exposed side of the double-sided tape attached to the connector and slide
the clip and cable into the Raspberry pi. Stick the connector to the top of the Ethernet port as shown.
Slide a 25mm (1inch) piece of 3.5mm (1/8 inch) diameter heat shrink tubing over the end of the cut
wire, leaving the red and black wires poking out. Shrink in place, so that the exposed cable shielding is
covered.

9
Insert the cable’s red lead into the motor HAT screw terminal which read’s “+ power”, and the cable’s
black lead into the motor HAT screw terminal which reads “– power”. Tighten the screw terminals as
shown.
Parts Needed:
-14mm Circular Bubble Spirit Level
-P0087 –Spherical Scanner Cover, Square 3D printed part.
-Super Glue

10
Start by finding a flat level surface (you can use the spirit level to check for this). Insert the spirit level
into the scanner cover as shown. Then put the scanner cover on the flat level surface. Next use your
fingers or a small tool like a screw driver to adjust the position of the spirit level in the hole until the
bubble sits in the center when the scanner cover is sitting flat on the level table.
Put a few beads of glue around the spirit level and let it dry in a level position.

11
Parts Needed:
-(4) Steel Thread Rolling Screw for Plastic, Zinc Plated, Pan Head, Phillips Drive, #2-28 Thread
Size, 3/4" Length
-(2) Nylon Unthreaded Spacers 3/16" OD, 7/16" Length, for Number 2 Screw Size
-P0087 –Spherical Scanner Cover, Square 3D printed part.
Insert the Nylon spacers between Raspberry Pi and Motor Hat mounting holes on the side next to the
screw terminals, while inserting the screws through them as shown.
IMPORTANT: WHEN INSTALLING THE RASPBERRY PI ASSEMBLY INTO THE COVER, YOU NEED TO
REMOVE THE SD CARD. YOU CAN THEN SLIDE THE SD CARD BACK INTO THE PI FROM THE OUTSIDE.

12
Parts Needed:
-Sweep Sensor
-Sweep Cable
-Sweep USB to Serial Adapter
-Sweep USB cable
-(4) M2.5x4mm 316 Stainless Steel Flat Head Phillips Machine Screws
-(1) Steel Thread Rolling Screw for Plastic, Zinc Plated, Pan Head, Phillips Drive, #2-28 Thread
Size, 3/8" Length
-Small zip tie
-P0092 - 90 DEGREE CYLINDRICAL SCANNER BRACKET, TALL
Install the larger screw (which acts as a set screw) into the shaft hole as shown and thread part way in.

13
Assemble the Sweep Cable, Sweep USB to Serial Adapter and Sweep USB cable. Insert the cable through
the scanner bracket and insert the cable into the sideways facing connector in the Sweep sensor.
Insert the Sweep sensor into the bracket as shown. Line up the holes with the sweep connector facing
downward and the sweep led facing upward, and install the 4 small screws.

14
Mark a line with a pencil on the micro USB cable 3.25 inches (82.5mm) from the end of the micro USB
connector. Feed the micro USB cable connector through the Scanner Cover hole shown, then connect
the USB to Serial Adapter board.
Loop the serial cable inside the Scanner Bracket and then slide the USB to Serial Adapter board into the
little clip inside the Scanner Bracket in the orientation shown. Make sure the serial cable is not touching
the rotating head of the Sweep Scanner.

15
Pull the micro USB cable into the scanner cover, then slide it into the provided pinch slot where you the
made the pencil mark earlier. Put as little twist in the cable as possible as shown.
Make sure the flat on the stepper motor shaft is facing the set screw direction and push the 90-degree
bracket onto the motor. Make sure it can freely rotate around 180 degrees, and correctly engages the
limit switch. If you feel binding, gently pull the scanner bracket off the motor and remove any
obstructions.
Run the Sweep USB cable out through the small slot on the side of the scanner cover and into the USB
port on the Raspberry Pi.
Connect the limit switch wires to the Raspberry Pie. One lead should go to pin 17 on the motor HAT
header, while the other lead should go to one of the 3V pins on motor HAT power rail.

16
Next connect the four stepper motors in the color sequence shown. Use a small screw driver to tighten
the screw terminal. Do a light pull test with your fingers to make sure the wires are being held in place
snugly.
The assembly should look like this:

17
Parts Needed:
-SINOELE Ultra Slim Universal 10000mAh Power Bank for iOS and Android Smartphones –Black
-¼-20 Nut
-P0091 - Spherical Scanner Light Pipe
-P0088 - Spherical Scanner Battery Holder, Square
Place the nut on the top of the hexagon hole, then put the tip of your soldering iron through the nut and
turn it on (if you can control the temperature –set it to around 720F (382C)). Slowly guide the nut into
the hole as the plastic melts around it.

18
Once the nut cools, insert the battery into the holder as shown with the power light facing upward. We
have found that pushing the battery into the holder while keeping it parallel with the holder bottom
works best.
You should be able to easily activate the battery’s power button using the built in button on the 3D
print.

19
Peel away the double sided tape backing and insert the light pipe into the slot in the battery holder as
shown.
When you active the battery’s power button, you should see light exit the light pipe toward the outside
of the device.

20
Parts Needed:
-Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
-Female to female jumper wire Dupont cable (1) Yellow, (1) Green, (1)Black, (2) Red
-(4) Steel Thread Rolling Screw for Plastic, Zinc Plated, Pan Head, Phillips Drive, #2-28 Thread
Size, 3/8" Length
Solder pin strips into IMU circuit board with pins projecting out of the side with all the components on it.
Use the four screws to mount the IMU in the scanner cover, making sure to orient it with the 4 pins
closer to the Raspberry Pi.
Follow this wire connection guide to connect the IMU to the Raspberry PI:
IMU->Wire Color->Motor HAT Connections
VIN ->Red Wire->+3V Rail
GND->Black Wire->GND Rail
SDA->Blue Wire->RX0
SCL->Yellow Wire->TX0
RST->Green Wire->#4
PS1->Red Wire->+3V Rail