Procuring Components

This section outlines how to source all required components for this project.

info

All the prices are mentioned in Japanese Yen.

---

✅Actuators (Total Cost: ￥397,356)

Component	Quantity	Model	Cost
J1, J2 motors	4	DM-J8009-2EC	￥205,790
J3 motor	2	DM-J4340P-2EC	￥42,066
J4 motor	2	DM-J4340-2EC	￥37,387
J5, J6, J7, J8 motors	8	DM-J4310-2EC V1.1	￥112,113

---

🛠 Mechanical Components (Total Cost: ￥478,518)

Component	Link	Cost
Manufactured Arm Parts	View Parts	￥316,018
Off-the-shelf Arm Parts	View Parts	￥34,336
Pedestal Components	View Parts	￥20,222
Gripper Components	View Parts	￥107,942

---

⚡Electrical Components (Total Cost: ￥84,564)

Component	Link	Cost
All Electrical Components	View Components	￥84,564

📦 Mechanical Components

We divide components into:

• Off-the-shelf Components: Standard items with a part number.
• Manufactured Components: Machined on-demand using MISUMI’s MEVIY service.

All required components are listed in the Bill of Materials section, with model numbers and recommended sources.

---

🛒 Off-the-shelf Components

Most mechanical and fastener components are available as catalog items from MISUMI.

Steps:

1. Go to MISUMI website.
2. Enter the model number (e.g., CBE4-8) in the search bar.
3. Confirm dimensions/specs.
4. Add to cart and order.

note

No drawings needed for catalog parts — model numbers are sufficient.

---

🛠️ Manufactured Components

Some components in this project are designed for custom manufacturing and are ordered through MEVIY, MISUMI’s automated 3D machining service.

There are two ways to place orders:

📎 Method 1: Upload CAD File

If you wish to review or customize the design:

1. Go to MEVIY website.
2. Upload the STEP file (available in our GitHub repo).
3. Select material, finish, and tolerances.
4. Review the quote and place order.

🔢 Method 2: Use Project Model Numbers (Recommended)

We have pre-registered model numbers for all custom components. To order directly:

1. Visit MISUMI's search page.
2. Paste the model number provided in our BOM (e.g., MVBLK-ASN-48S-4BGUX-L).
3. The MEVIY system will identify it as a custom part.
4. Specify quantity and order (no CAD upload required).

note

This method ensures you get the exact geometry we've validated for the project.

🔄 Alternatives & Local Options

You may also:

• Source equivalents from other vendors (check specs).
• Manufacture custom parts locally using the provided STEP files.

---

⚡Electrical Components

This project uses a mix of off-the-shelf electronic modules and custom PCBs and wiring harnesses. Below are recommendations on how to procure them.

---

🛒 Off-the-Shelf Components

Below are the recommended product links to be used with OpenArm 01:

• Power Supply: Output Voltage: 24V; Output Current: 15A
• USB to CANFD Converter
• Emergency Stop

tip

Always check product ratings, reviews, and delivery estimates. Buy a few spares for time-sensitive builds.

---

🧩 Custom PCBs & Wiring

For custom electronics, we provide pre-designed PCB layouts and wire harness diagrams.

🧾 PCB Fabrication + Assembly

JLCPCB can be used to manufacture and optionally assemble the custom boards:

1. Download the Gerber + BOM + CPL files from the project repository.
2. Go to JLCPCB.
3. Upload the Gerber zip file to get a quote.

4. Follow the on-screen instructions to review options. We recommend leaving default settings unless you have specific requirements. Optionally choose Remove Mark in the Mark on PCB option.

5. Scroll down to the PCB Assembly tab and enable the option.

6. Click on Next.

7. Click on Next.

8. Upload the BOM and CPL files, and click on Process BOM & CPL.

9. Review the parts on the next page and proceed.

10. Review the 2D and 3D models on the next page and click on Next.

11. Proceed to place the order.

---

🔌 Custom Wires and Harnesses

LCSC can be used to order custom wires and harnesses for OpenArm 01:

1. Go to the customs cable page.
2. Scroll down to the link where you can upload drawings.

3. Upload the drawings provided and scroll down to input the desired quantity and click on Confirm your cable plan.

4. Proceed to click on Submit cable order. A request for quote will be generated and LCSC will send a quote which can be used to place the order.

---

⚙️ Motors

If you are interested in purchasing motors, please visit our Purchase page. We will assist you with pricing, availability, and shipping details.