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994d22bb71
Co-authored-by: Takashi Toyoshima <toyoshim@google.com> Co-authored-by: Shun Ikejima <ikejima@google.com>
176 lines
5.2 KiB
Markdown
176 lines
5.2 KiB
Markdown
# Build Guide
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[Read the project overview first](./README.md)
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## File List
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- stls/ : STL files for the case
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- stls/one_dial/ : For the 1-dial edition
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- stls/full/ : For the 9-dial edition
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- pattern/ : Encoder pattern files
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- board/ : KiCad schematics and board layout data
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- board/gerber/ : Gerber data for PCB production and assembly
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- firmware/ : Firmware development resources for Raspberry Pi Pico C/C++ SDK
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- firmware/prebuilt : Pre-built firmware binaries
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## Assembly
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We have prepared a 1-dial edition, which is easier to assemble with only one dial, and a full edition with nine dials.
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### 1-Dial Edition
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#### Required Parts
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- 3D printed parts (1 of each)
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- Bottom case (case_bottom.stl)
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- Top case (case_top.stl)
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- Dial (dial.stl)
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- Dial cap (dial_cap.stl)
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- Encoder (encoder.stl)
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- Clutch (clutch.stl)
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- Fixing cover (cover.stl, print in a color close to white, such as gray)
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- Triple claw (end3.stl)
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- Encoder pattern pattern/one_dial.svg
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- Screws
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- 12 self-tapping screws, 2mm diameter, 4mm length
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- 2 washers
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- Electronic parts ([see the board directory for details](./board/README.md))
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- 1 [Firmware installed](./firmware/README.md) Raspberry Pi Pico
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- 2 assembled sensor boards
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- 1 [Unipolar Stepping Motor 28BYJ-48 5V](https://akizukidenshi.com/catalog/g/g113256/)
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- 1 [Motor driver module](https://www.aitendo.com/product/12366)
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- Wiring materials: as needed
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#### Step 1: Create the Encoder
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Print the [pattern file](./pattern/one_dial.svg) on copy paper at actual size.
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Place the encoder part on top with the printed side down, glue it, and cut around the perimeter and the center.
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Align the ◆ mark on the encoder part with the ▼ mark on the paper.
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#### Step 2: Assemble the Cover Module
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The cover needs to be printed in a non-transparent color because it uses a photosensor.
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In the prototype, we used gray PLA.
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You may need to adjust the resistance of the sensor board for other colors.
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Screw the two sensor boards to the back.
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Also, screw the stepping motor to the back.
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We call the sensor board near the motor as "Sensor L" board and other one as "Sensor H" board.
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Attach the clutch to the motor shaft protruding from the front.
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#### Step 3: Attach to the Case
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From the back, attach the encoder and then the cover.
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Refer to the photo below for the orientation of the cover.
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From the front, attach the dial and cap to the shaft.
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There are small marks on the dial and shaft, so align them.
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Attach the dial cap from the top and secure it with a screw.
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#### Step 4: Wiring
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Attach the sensor board and motor driver to the Raspberry Pi Pico.
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Please check [board assembly guide](./board/README.md) for details.
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Secure the board to the edge of the bottom case with double-sided tape or similar.
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### 9-Dial Edition
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The 9-dial edition consists of nine dial modules.
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These modules are named "Dial A" through "Dial I" respectively.
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These names are used for the encoders, patterns, wiring, and so on.
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The keymap is as follows:
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#### Required Parts
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- 3D printed parts
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- Bottom cases (case_bottom_left.stl and case_top_right.stl), one for each side
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- Top cases (case_top_left.stl and case_top_right.stl), one for each side
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- 9 dials (dial_a.stl to dial_i.stl), including the enter key
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- 9 dial caps (cap_a.stl to cap_i.stl)
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- 9 encoders (encoder_a.stl to encoder_i.stl)
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- 9 clutches (clutch.stl)
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- 2 types of fixing covers, 9 in total
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- 7 small (cover_small.stl)
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- 2 large (cover_large.stl)
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- 3 types of over-rotation prevention claws, 9 in total
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- 8 small (end.stl)
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- 1 triple (end3.stl)
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- 9 types of encoder patterns
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- Screws
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- About 100 self-tapping screws, 2mm diameter, 4mm length
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- 18 washers
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- A few M3 bolts and nuts
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- PCB
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- 11 sensor boards
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- 1 main board (assembled)
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- Electronic parts ([see the board directory for details](./board/README.md))
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- 1 assembled main board with [2 firmware installed](./firmware/README.md)
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- 11 assembled sensor boards
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- 9 [Unipolar Stepping Motors 28BYJ-48 5V](https://akizukidenshi.com/catalog/g/g113256/)
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- Wiring materials: as needed
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### Assembly
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#### Step 1: Connect Left and Right
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Connect the left and right bottom cases with four M3 screws.
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#### Step 2: Create the Encoder
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Same as the 1-dial edition.
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#### Step 3: Assemble the Cover Module
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Basically the same as the 1-dial edition.
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Attach only one sensor board to seven of the covers.
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Attach two sensor boards to two of the covers.
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#### Step 4: Attach to the Case
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Basically the same as the 1-dial edition.
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Please refer to the following figure for how to attach the covers.
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#### Step 5: Wiring
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Wire the motor and sensor board to the dedicated main board.
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