~/workshop $ cat ./inventory/wh148-b10k-potentiometer/README.md

WH148 B10K Linear Potentiometer w/ Knobs (ALLECIN, 4pcs)

category: Bench stock
qty: 4 potentiometers + assorted knob caps (per kit photo: 6 knobs of varying colors included)
status: owned / untested
maker: WH148 is a generic potentiometer series manufactured by multiple Chinese pot makers; this kit resold/assembled by ALLECIN

Overview

A standard 3-pin (single-turn, no built-in switch) rotary potentiometer — the classic “volume knob” style variable resistor used for analog control input (volume, brightness, threshold tuning) or as a voltage divider feeding an ADC pin. B10K = linear taper, 10kΩ end-to-end resistance.

Key specs

Resistance: 10kΩ ±20%, linear (B) taper
Power rating: 0.125W
Total rotation: 300° ± 5°
Rotation torque: 2–20 mN·m
Rotary life: 10,000 cycles
Shaft: 6mm knurled/D-shaft, ~7mm length, panel-mount threaded bushing (15mm)
Pins: 3, through-hole/panel-mount

Pinout

Pin	Function
Pin 1	End terminal (one end of the resistive track)
Pin 2	Wiper (variable output — the tap point that moves with rotation)
Pin 3	End terminal (other end of the resistive track)

Using it as a variable resistor: use Pin 2 + either end pin. Using it as a voltage divider (typical for reading position on an ADC): Pin 1 to a rail (e.g. 3.3V), Pin 3 to GND, Pin 2 (wiper) to the ADC input.

Wiring / typical usage

For analog input to a microcontroller: tie the two end pins across the reference voltage and ground, read the wiper (Pin 2) on an ADC pin. For use as a simple rheostat (e.g. dimming, gain trim in an analog circuit): use only Pin 2 and one end pin, leaving the third disconnected. No pull-ups, debounce, or additional components needed — it’s a passive analog part.

Code / libraries

N/A — passive analog component. Read via analogRead() (Arduino) or the platform’s ADC API; no library required.
Config notes: with a 3.3V reference and 10-bit+ ADC, expect roughly linear counts across the rotation range, ±20% tolerance on absolute resistance (irrelevant for ratio-based position reading, matters if used as a precision resistor).

Source material

Datasheet/specs: HandsOn Tech WH148 datasheet (PDF), HandsOn Tech WH148 10K product page
Purchase link: Amazon, “ALLECIN WH148 B10K Potentiometer…” (with assorted knob caps)
Product photo: /inventory/wh148-b10k-potentiometer/product-photo.png — HandsOn Tech’s own WH148 product photo. Representative of the standard WH148 body/pin layout; the specific ALLECIN kit’s knob cap colors/shapes differ (see the purchase listing photo for the exact caps included).

Verification

Specs verified against the HandsOn Tech WH148 datasheet — WH148 is a widely standardized generic pot series, high confidence on pinout/mechanical specs. "B10K" (10kΩ linear) confirmed from the part's own printed marking convention, standard across WH148 resellers.

Notes / gotchas

“B” taper = linear; “A” taper = logarithmic/audio taper. This kit is B (linear) — fine for general analog input/position sensing, not ideal for perceptually-linear audio volume control (an A-taper pot would feel more natural there).
0.125W power rating is low — fine for logic-level voltage dividers, not for switching any real load current directly.