# RSB1

# Overview

<span class="fontstyle0">Universal lightweight</span> motorized rotary actuator for automated 360° product photography

[![IMG_0584_.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2021-02/scaled-1680-/IMG_0584_.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2021-02/IMG_0584_.jpg)

- Black anodized aluminium
- Modular construction
- GT2 belt drive for smooth operation
- Double preloaded instrumentation bearings zero backlash
- 12.7mm through hole for wire harness or slip-ring
- Magnetic Hall sensor for precise homing
- Reduction ratio 1:5# Specifications

<table border="1" id="bkmrk-parameter-value-unit" style="border-collapse: collapse; width: 100%; height: 58px;"><tbody><tr style="height: 29px;"><td class="align-center" style="width: 58.642%; height: 29px;">**Parameter**</td><td class="align-center" style="width: 20.3703%; height: 29px;">**Value**</td><td class="align-center" style="width: 20.9876%; height: 29px;">**Units**</td></tr><tr style="height: 29px;"><td style="width: 58.642%; height: 29px;">Reduction ratio</td><td style="width: 20.3703%; height: 29px;">5:1</td><td style="width: 20.9876%; height: 29px;"> </td></tr><tr><td style="width: 58.642%;">Stepper motor step angle</td><td style="width: 20.3703%;">1.8</td><td style="width: 20.9876%;">deg</td></tr><tr><td style="width: 58.642%;">Motor current</td><td style="width: 20.3703%;">1</td><td style="width: 20.9876%;">A</td></tr><tr><td style="width: 58.642%;">Rotary stage max torque</td><td style="width: 20.3703%;">0.5</td><td style="width: 20.9876%;">Nm</td></tr><tr><td style="width: 58.642%;">Weight</td><td style="width: 20.3703%;">475</td><td style="width: 20.9876%;">g</td></tr><tr><td style="width: 58.642%;">Slewing hole diameter</td><td style="width: 20.3703%;">12.7</td><td style="width: 20.9876%;">mm</td></tr><tr><td style="width: 58.642%;">Radial load</td><td style="width: 20.3703%;">&gt;20</td><td style="width: 20.9876%;">N</td></tr><tr><td style="width: 58.642%;">Axial load</td><td style="width: 20.3703%;">&gt;100</td><td style="width: 20.9876%;">N</td></tr></tbody></table># How to start using

#### Start program

- Connect actuator to port A
- Connect cables (USB and power)

TBD: picture

- Install serial port driver if needed [STM32 Virtual COM Port Driver](https://www.st.com/en/development-tools/stsw-stm32102.html)
- Download latest Windows release from [GitHub](https://github.com/Kurokesu/RSB1_360_product_photography)
- Extract zip file and run **RSB1\_360\_photography** program
- You should be greeted with window

[![main_window.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/scaled-1680-/main_window.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/main_window.png)

- Select COM port and press CONNECT
- Status bar at the bottom should tell controller status and version. Or error message will pop

#### Move actuator

- TBD: load program
- TBD: create custom program
- TBD: screenshot
- Run

#### Video

TBD: quick step-by-step video# Dimensions

RSB1 dimensions

[![RSB1_dimensions.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/scaled-1680-/RSB1_dimensions.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/RSB1_dimensions.png)

Detailed platform dimensions

[![RSB1_platform.png](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/scaled-1680-/RSB1_platform.png)](https://wiki.kurokesu.com/uploads/images/gallery/2020-08/RSB1_platform.png)# Wiring

#### RJ45 pinout

<table border="1" id="bkmrk-pin-signal-1-%C2%A0-2-%C2%A0-3" style="border-collapse: collapse; width: 40.2469%;"><tbody><tr><td class="align-center" style="width: 18.7654%;">**Pin**</td><td class="align-center" style="width: 21.4815%;">**Signal**</td></tr><tr><td style="width: 18.7654%;">1</td><td style="width: 21.4815%;">GND</td></tr><tr><td style="width: 18.7654%;">2</td><td style="width: 21.4815%;">5V</td></tr><tr><td style="width: 18.7654%;">3</td><td style="width: 21.4815%;">SIG1</td></tr><tr><td style="width: 18.7654%;">4</td><td style="width: 21.4815%;">A1</td></tr><tr><td style="width: 18.7654%;">5</td><td style="width: 21.4815%;">A2</td></tr><tr><td style="width: 18.7654%;">6</td><td style="width: 21.4815%;">SIG2</td></tr><tr><td style="width: 18.7654%;">7</td><td style="width: 21.4815%;">B1</td></tr><tr><td style="width: 18.7654%;">8</td><td style="width: 21.4815%;">B2</td></tr></tbody></table>

<p class="callout info">SIG1 is used for homing signal</p># Drive train specifications

<main class="content-wrap card" id="bkmrk-belt-reducer-rsb1-ha">#### Belt reducer

RSB1 has GT2 belt in order to transfer power to plate. 12/60 tooth pulleys provide 1:5 reduction rate.

<div><div><div></div></div></div>#### Motor

<div><div><div><table border="1" id="bkmrk-parameter-value-unit" style="border-collapse: collapse; width: 100%;"><tbody><tr><td class="align-center" style="width: 65.3086%;">**Parameter**</td><td class="align-center" style="width: 17.9012%;">**Value**</td><td class="align-center" style="width: 16.7901%;">**Unit**</td></tr><tr><td style="width: 65.3086%;">Size</td><td style="width: 17.9012%;">NEMA17</td><td style="width: 16.7901%;"> </td></tr><tr><td style="width: 65.3086%;">Step angle</td><td style="width: 17.9012%;">1.8 <span class="st">±</span>5%</td><td style="width: 16.7901%;">deg</td></tr><tr><td style="width: 65.3086%;">Phase count</td><td style="width: 17.9012%;">2</td><td style="width: 16.7901%;"> </td></tr><tr><td style="width: 65.3086%;">Mass</td><td style="width: 17.9012%;">150</td><td style="width: 16.7901%;">g</td></tr><tr><td style="width: 65.3086%;">Rated voltage</td><td style="width: 17.9012%;">3.5</td><td style="width: 16.7901%;">V</td></tr><tr><td style="width: 65.3086%;">Rated current</td><td style="width: 17.9012%;">1.0</td><td style="width: 16.7901%;">A</td></tr><tr><td style="width: 65.3086%;">Resistance per phase</td><td style="width: 17.9012%;">3.5 <span class="st">±</span>10%</td><td style="width: 16.7901%;">Ω</td></tr><tr><td style="width: 65.3086%;">Inductance per phase</td><td style="width: 17.9012%;">4.5 <span class="st">±2</span>0%</td><td style="width: 16.7901%;">mH</td></tr><tr><td style="width: 65.3086%;">Holding torque</td><td style="width: 17.9012%;">160</td><td style="width: 16.7901%;">mN\*m</td></tr></tbody></table>

</div></div></div></main># GRBL motion settings

#### Recommended GRBL parameters

Motion controller needs to know about actuator capabilities.

<table border="1" id="bkmrk-grbl-parameter-value" style="border-collapse: collapse; width: 100%; height: 116px;"><tbody><tr style="height: 29px;"><td class="align-center" style="width: 34.321%; height: 29px;">**GRBL parameter**</td><td class="align-center" style="width: 29.1357%; height: 29px;">**Value**</td><td class="align-center" style="width: 36.5432%; height: 29px;">**Definition**</td></tr><tr style="height: 29px;"><td style="width: 34.321%; height: 29px;">$100</td><td style="width: 29.1357%; height: 29px;">111.110</td><td style="width: 36.5432%; height: 29px;">X steps/mm</td></tr><tr style="height: 29px;"><td style="width: 34.321%; height: 29px;">$110</td><td style="width: 29.1357%; height: 29px;">20000.000</td><td style="width: 36.5432%; height: 29px;">X Max rate, mm/min</td></tr><tr style="height: 29px;"><td style="width: 34.321%; height: 29px;">$120</td><td style="width: 29.1357%; height: 29px;">2000.000</td><td style="width: 36.5432%; height: 29px;">X Acceleration, mm/sec<sup>2</sup></td></tr><tr><td style="width: 34.321%;">$130</td><td style="width: 29.1357%;">90.000</td><td style="width: 36.5432%;">X Max travel, mm</td></tr></tbody></table>

<p class="callout info">Assume motor is connected to X axis.</p># Ordering

**RSB1** rotary actuator can be ordered directly on [Kurokesu e-store](https://www.kurokesu.com/shop/motion_systems)