WSAL21568 – SC15 Servo/en
Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.
Summary
The Waveshare SC15 is a high-torque, programmable serial bus servo (up to 17 kg·cm at 8.4 V). It supports a 210° range in servo mode and continuous rotation in motor mode. Up to 253 units can be controlled simultaneously over the serial bus.
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Technical overview
- Input voltage: 4.8–8.4 V; idle current ~200 mA, stall current ~1700 mA.
- Angle range: 210° in servo mode / 360° continuous in motor mode.
- Position sensor resolution: 210°/1024 steps.
- Bus baud rate: 1 Mbps; ID range 0–253.
- Dimensions: 40.5 × 40 × 20 mm.
- Two TTL bus ports per servo allow daisy-chaining multiple units.
- Feedback values: position, load, speed, input voltage.
- Two operating modes switchable via software: servo mode (absolute angle) and motor mode (stepper, ±7 revolutions, not retained after power loss).
Notes and version constraints
- Service life is only given as “over 100,000 cycles” from reliability tests; no warranty or certification is stated in the source.
- When changing a servo ID, the EPROM area must be unlocked first, otherwise changes are lost after reboot.
- When using many servos on the same driver board, the power supply must be sized accordingly; otherwise voltage drops may occur.
- The default scan limit of the driver is ID 0–20; higher IDs require modifying the MAX_ID variable in the program and re-uploading.
- The “17 kg·cm torque” figure applies specifically at 8.4 V; available torque decreases at lower voltages accordingly.
Source and revision record
- SC15 Servo - Waveshare Wiki
- Source revision: 111153
- Captured: 2026-09-03T02:59:49+00:00
- SHA-256:
2e9928e5b6b8634559f5598457361836a8794df2344da3efa6f34f9c6cabb2f0