Robot wiring and sensor chains
4-wire 200 mm adapter (STEMMA (JST PH) / Grove-compatible) — plugs I2C sensors and boards together without soldering.
Engineering inference
Adafruit Industries
Adafruit STEMMA to Female Sockets 200 mm
Adafruit 3950 STEMMA cable, 200 mm: JST PH 4-pin (2 mm pitch, STEMMA I2C) on one end and 4 × 0.1″ female sockets on the other; wires black GND, red V+, white SDA, green SCL. Breaks a STEMMA port out to header pins; the JST PH plug also fits a Seeed Grove socket with matching wires.
3950Development boardPrice$1.50www.adafruit.com · in stock
Buy at www.adafruit.com Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
No-load speed, rated performance and stall limits describe different operating points. A stall specification is not a continuous operating rating.
3D model & CAD
3D model & CAD files
Downloadable geometry for mechanical fit checks.
No CAD file is stored for this product yet.
Connectors & wiring
Connectors and wiring
What each end plugs into and what each wire carries.
- Cable type
- adapter
- Ecosystem
- STEMMA (JST PH) / Grove-compatible
- Connector A
- JST PH 4-pin, 2 mm pitch (STEMMA)
- Connector B
- 4 × 0.1″ female sockets
- Conductors
- 4
- Connector pitch
- 2 mm
- Length
- 200 mm
| Pin / wire | Position | Role | Notes |
|---|---|---|---|
| SCL | PH-1 | i2c scl | green wire, JST PH pin 1 |
| SDA | PH-2 | i2c sda | white wire, JST PH pin 2 |
| V+ | PH-3 | power | red wire, JST PH pin 3 |
| GND | PH-4 | ground | black wire, JST PH pin 4 |
| Connector | Type |
|---|---|
| end_a | JST PH 4-pin, 2 mm pitch (STEMMA) |
| end_b | 4 × 0.1″ female sockets |
Specifications
Motor performance
No-load, rated-load and stall figures retain their separate test conditions.
Stall torque and current are not continuous ratings. Check the duty cycle and starting load when choosing the driver and power supply.
Thermal limits by level
Product operating conditions, chip ambient ratings, package case limits and junction maxima remain separate.
Motor body
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
Board connectors
| ID / type | Pins | Pitch | Notes |
|---|---|---|---|
| end_aJST PH 4-pin, 2 mm pitch (STEMMA) | 4 | 2 mm | — |
| end_b4 × 0.1″ female sockets | 4 | 2.54 mm | — |
Complete structured record
Every available field, including details beyond the summaries. Null means the value has not been established.
Sourcing & files
Supplier offers
US / USD is the target market. Observed price and stock are separate from a delivery quote.
www.adafruit.com
US · USD
$1.50Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 06:02 PM UTC
- Delivery estimate
- Not quoted
Observed within the last 24 hours. Confirm the current supplier quote.
Visit supplier (opens in a new tab)Delivery depends on quantity, postal code and shipping method. A dispatch statement such as “ship today” is not an arrival estimate.
Design files and references
Each source keeps its own verification status. Confirm the part revision and file contents before using it in a design.
Datasheet (opens in a new tab)
Manufacturer reference
Adafruit STEMMA to Female Sockets 200 mm (Adafruit 3950) — store photo (opens in a new tab)
Manufacturer reference
store photo of the cable
Source evidence
Document provenance, retrieval dates and the field groups supported by each source.
Supports: spec.provides.cable_type, spec.provides.conductors, spec.provides.connector_a, spec.provides.connector_b, spec.provides.ecosystem, spec.provides.features, spec.provides.length_mm, spec.provides.pitch_mm, spec.usage.connectors, spec.usage.pinout, spec.usage.pinout_complete
sha256 b30a0289ebeba9657d75cb9b08b8b1275f1608a71e1fedaa5479ec8d67854a4d
Supports: offers
FAQ
Adafruit STEMMA to Female Sockets 200 mm questions
How much does the Adafruit STEMMA to Female Sockets 200 mm cost?
From $1.5 at www.adafruit.com. Prices are observed unit prices before tax and shipping.
Where does this Adafruit STEMMA to Female Sockets 200 mm data come from?
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.
Sources
- Adafruit STEMMA to Female Sockets 200 mm datasheet — Adafruit Industries
- www.adafruit.com listing