Feetech STS3215-C018 12 V Serial Bus Servo
Feetech · MPN STS3215-C018 · Maglev ID ac-feetech-sts3215-c018
CN Maker in China, factory not confirmed unknown REPORTED
The 30 kg·cm, 12-bit magnetic-encoder bus servo used in the Hugging Face LeRobot SO-100/SO-101 arms; the low-cost Dynamixel-XL430 substitute.
Specifications
| Stall torque | 30 kg·cm @ 12 V (rated 10 kg·cm) |
|---|---|
| No-load speed | 0.222 s/60° (45 rpm) @ 12 V |
| Voltage | 4-14 V (tested at 12 V) |
| Interface | Half-duplex TTL serial bus (STS protocol) |
| Feedback | 12-bit magnetic encoder (~0.088°/step) |
| Mass | 55 ± 1 g |
| Gear ratio | 345:1, copper gears |
Who makes it
MakerShenzhen Feetech RC Model (深圳飞特模型)
Based inChina
RoleBrand owner
Feetech states OEM/customization support; its sales mailbox bounced Sep 4 2026, current contact [email protected] per the Eyecandy servo benchmark.
Landed cost in the US
CN
41.9%
TW
10%
VN
16.9%
IN
14.4%
JP
12.5%
KR
12.5%
DE
10%
MX
14.4%
US
0%
Total US duty on this part by where it is made (2026-10-29). Mexico shown before USMCA preference; qualifying goods enter duty free. Your factory choice, not the shipping port, sets the origin.
Loading duty data…
Compliance
| HTS classification | 8501.10.40.60 typical, not a ruling |
|---|---|
| NDAA | unknown |
| Blue UAS | unknown |
| FCC | n/a |
Equivalents from other makers
Sources
- https://openelab.com/products/feetech-sts3215-c018-servo-12vspec table + price
- https://www.waveshare.com/st3215-servo.htmWaveshare ST3215 (same spec family, maker not named) $16.99-21.99 range
Record confidence: REPORTED. VERIFIED means the maker's own documents; REPORTED means a credible third party; UNVERIFIED means a single weak source. Anything we could not confirm says unknown.