Rotary printed stack
Confirm FR-4, copper and finish, carbon system, film build, cure, collector routing, contact windows, and protection as a compatible sensing structure.

Custom rotary feedback element
Rotary carbon film sensor PCBs translate angular movement through printed resistive and collector tracks on FR-4. Chipsimple reviews active angle, resistance or voltage curve, direction, wiper material and force, center and mounting geometry, electrical loading, terminals, protection, calibration, environment, and movement duty as one sensor interface.
These FR-4 carbon-film values support early rotary sensor selection. Board stack, ink, active angle, response curve, contact system, loading, center and mounting features, protection, calibration, environment, and lifecycle requirements are released with the complete mechanism.
Final values confirmed against customer drawing.
| Base Material | FR-4 |
|---|---|
| Board Thickness | 0.4–3.2 mm typical |
| Copper Weight | 0.5–2 oz typical |
| Carbon Ink | Polymer carbon / Ag-C blend |
| Carbon Film Thickness | 8–15 µm typical |
| Cure Temperature | 120–150°C typical |
| Sheet Resistance | 50–5,000 Ω/□/25 µm reference |
|---|---|
| Target Resistance | 10 Ω–1 MΩ typical |
| Resistance Tolerance | ±5% / ±10% typical |
| Linearity | ±1–5% FS typical |
| Surface Finish | HASL / ENIG / ENEPIG |
| Wear Life | ≥10,000 cycles typical |
Rotary feedback quality depends on alignment and contact as much as printed resistance. Engineering review connects arc geometry, collector tracks, active angle, curve points, wiper radius and force, shaft concentricity, mounting datums, electrical loading, end stops, protection, contamination, duty cycle, calibration, and the production test fixture.
Confirm FR-4, copper and finish, carbon system, film build, cure, collector routing, contact windows, and protection as a compatible sensing structure.
Release active angle, direction, start and end references, arc radii, curve points, dead zones, terminals, center features, and mounting datums.
Define wiper material, fingers, force, radius, shaft play, concentricity, support, stops, speed, lubrication, connector, and assembly tolerances.
Measure output against angle with controlled loading, direction, speed, force, repeatability, contact noise, cycling, environment, calibration, sampling, and failure limits.
Rotary printed elements fit compact feedback mechanisms when the angular curve, wiper, shaft, electronics, enclosure, and lifecycle validation are defined together.
Application illustrationAutomotive throttle feedback requires released angle, redundant or single tracks, wiper mechanics, vibration, temperature, contamination, calibration, and vehicle-level validation.
Review application inputs
Application illustrationCompact actuator boards can be reviewed after gear travel, shaft alignment, connector, curve, contact force, temperature, and end-of-line calibration are defined.
Review application inputs
Application illustrationRobotic joints and servos need application-specific resolution, speed, support, loading, contact stability, movement duty, environment, and controller calibration.
Review application inputsThe verified photographs show compact round or partial-round FR-4 boards with concentric black printed tracks, conductor paths, center openings, mounting features, and terminals. They do not prove angle range, response curve, resistance, contact noise, shaft alignment, wear, or calibrated sensor performance.

Chipsimple supports polymer-carbon printing, laboratory inspection, managed production, and protected packing in Dongguan. Rotary sensor projects release the board and ink system, angular curve, wiper fixture, calibration test, sampling, traceability, and acceptance limits together; finished-sensor performance remains tied to the customer mechanism.
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Short answers for quotation planning; released drawings and validation requirements remain controlling.
Define resistance or voltage output against angle, tolerance or linearity, direction, active and total angle, reference points, wiper material and force, radius, shaft and mounting geometry, speed, movement duty, loading, connector, environment, calibration, and end-of-line acceptance method.
No. They are practical category-level selection values, not a released product specification. Material compatibility, geometry, print build, electrical loading, assembly, environment, inspection method, and expected volume can narrow the usable window. Final values are confirmed against the controlled drawing and approved project conditions.
Use the production-intent wiper, shaft, housing, and electronics to measure output across angle, direction, loading, speed, and force. Include repeatability, contact noise, end behavior, temperature, vibration, contamination, wear, calibration, sample size, and controlled failure limits.
Send the controlled drawing or artwork, dimensions and tolerances, material preference, electrical targets, assembly interface, operating environment, validation requirements, prototype quantity, annual volume, and schedule. Include the angle-response curve, mounting datums, shaft and wiper design, force, speed, load, calibration, and target cycles.
Send the angular curve and real mechanism so the track, collector, wiper, shaft, mounting, loading, protection, calibration, and wear route can be reviewed together. Controlled reference angles and test-fixture conditions are essential for a useful quotation and repeatable release.
PDF, DWG, DXF, STEP, Gerber, ZIP, Excel, Word, or sample photos are accepted.
