DFRobot
8421 Encoder-Vertical
The 8421 Encoder (Vertical) is an absolute position encoder with 16 positions (0–F) using BCD/8421 encoding. Unlike incremental encoders or potentiometers, t...
The 8421 Encoder (Vertical) is an absolute position encoder with 16 positions (0–F) using BCD/8421 encoding. Unlike incremental encoders or potentiometers, the mechanical position directly determines the output code — no memory, reference point, or continuous counting is required. Simply read the position whenever you need it.
This makes the encoder highly reliable with strong interference resistance, and it retains position without power. The vertical-mount form factor is suited for applications where the shaft axis runs perpendicular to the mounting surface.
Key Features
- Absolute Position Encoding – 16 positions (0–F) with 8421 BCD output
- No Memory Required – Position is always readable without reference homing
- Vertical Mount – Shaft axis perpendicular to the mounting surface
- 10,000 Step Service Life – Durable for industrial applications
Specifications
- Encoding: 8421 BCD, 16 positions (0–F)
- Operating Current: 150 mA
- Max Voltage: 42V
- Service Life: 10,000 steps
- Operating Temperature: −40°C to +85°C
- Dimensions: 19 × 19 mm
- Mounting Aperture: 2.0 mm
- Mounting Hole Pitch: 15 × 15 mm
Also Available
Package Contents
- 1× 8421 Encoder (Vertical)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- encoder
- A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
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Supplier page — dfrobot.com
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