{"product_id":"bourns-pel12s-rotary-encoder-red-illuminated-shaft-24-detents","title":"Bourns PEL12S Rotary Encoder with Red Illuminated Shaft — 24 Detents, 12mm, No Pushbutton","description":"\u003ch2\u003eBourns PEL12S Rotary Encoder with Red Illuminated Shaft — 24 Detents, 12mm\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBourns PEL12S-4224S-N1024\u003c\/strong\u003e is a premium 12mm vertical-mount incremental rotary encoder with a red illuminated knurled shaft — designed for applications where multiple encoders are used simultaneously, such as MIDI controllers, audio mixing equipment, and Eurorack synthesizer modules. The clear knurled shaft is designed to be used without a knob so the red LED illumination is visible, creating a distinctive and functional visual indicator. 24 detents per revolution provides fine control resolution.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e Bourns PEL12S-4224S-N1024\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Incremental rotary encoder (no absolute position)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetents per Revolution:\u003c\/strong\u003e 24 (24 clicks = 1 full rotation)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e A (CLK) and B (DT) quadrature outputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePushbutton:\u003c\/strong\u003e None (no shaft press function)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Continuous 360° (no mechanical stop)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Color:\u003c\/strong\u003e Red\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Max Current:\u003c\/strong\u003e 25mA (recommended: 5–10mA with 220–330Ω resistor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Operating Voltage:\u003c\/strong\u003e 3V–12V (with appropriate current limiting resistor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBase Dimensions:\u003c\/strong\u003e 12.4 × 13.2mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Height with Shaft:\u003c\/strong\u003e 24mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreadboard Compatible:\u003c\/strong\u003e Yes (bend or trim mounting tabs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePin Configuration (5 pins total)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED side (2 pins):\u003c\/strong\u003e LED+ and LED− — connect with current limiting resistor (220–330Ω for 5V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEncoder side (3 pins):\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003eA = Clock (CLK) output → MCU digital input (interrupt-capable recommended)\u003c\/li\u003e\n      \u003cli\u003eC = Ground\u003c\/li\u003e\n      \u003cli\u003eB = DT (Direction of Travel) output → MCU digital input\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDirection Detection Logic\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClockwise (CW):\u003c\/strong\u003e When A changes state, B ≠ A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounter-Clockwise (CCW):\u003c\/strong\u003e When A changes state, B = A\u003c\/li\u003e\n  \u003cli\u003eUse interrupt-driven reading (pins 2 \u0026amp; 3 on Arduino Uno) for best performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMIDI controllers:\u003c\/strong\u003e Multiple illuminated encoders for parameter control with visual feedback\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio mixing:\u003c\/strong\u003e Volume, pan, and EQ control with LED status indication\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEurorack synthesizers:\u003c\/strong\u003e Modulation depth, frequency, and envelope control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDJ equipment:\u003c\/strong\u003e BPM, filter, and effect parameter control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial HMI:\u003c\/strong\u003e Illuminated rotary control with active\/inactive visual feedback\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Bourns PEL12S-4224S-N1024 rotary encoder with red illuminated knurled shaft\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003ePremium Bourns quality — 24 detents, red illuminated shaft, 12mm footprint. The professional-grade encoder for MIDI controllers, audio equipment, and multi-encoder user interfaces.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45683866763499,"sku":"","price":3.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Encoder-with-Illuminated-Shaft.jpg?v=1723004862","url":"https:\/\/keszoox.com\/products\/bourns-pel12s-rotary-encoder-red-illuminated-shaft-24-detents","provider":"Keszoox","version":"1.0","type":"link"}