{"title":"LED Brightness Adjuster Kit","handle":"led-brightness-adjuster-kit","url":"/products/led-brightness-adjuster-kit","description":"This handy kit gives you a simple way to compare and tune the brightness of your own LEDs, helping you avoid a project full of mismatched indicator lights. It was originally designed for side-by-side LED testing and is especially useful when choosing resistor values or learning how brightness changes with resistance.The PCB slots into the power rails of a breadboard, and you can stack up to 10 boards next to each other for comparing multiple LEDs. Each board provides five LED footprints for different SMD and through-hole sizes, although only one LED should be fitted to each board.Brightness is adjusted with a 10k linear potentiometer, with a 100 Ohm resistor in series to help protect the LED from burning out. Silkscreen markings around the potentiometer show approximate resistance, and the R+ and R- test points let you measure the exact resistance with a DMM.The kit includes the PCB, potentiometer, 100 Ohm resistor and breadboard headers. LEDs are not included, and the kit is not pre-assembled, so it is a good soldering practice project and a practical introduction to Ohm’s Law. This is a SparkX experimental product: it has been tested, but is supplied with no guarantees and live technical support is not available.Features:Breadboard-friendly: Designed to slot into the power rails of a breadboard.Stackable testing: Stack up to 10 boards next to each other for side-by-side LED comparison.Multiple LED footprints: Includes five footprints for different sizes of LEDs, including SMD and through-hole.Adjustable brightness: Uses a 10k linear potentiometer to adjust LED brightness.LED protection: Includes a 100 Ohm resistor in series to help protect the LED from burning out.Resistance markings: Silkscreen labels around the potentiometer indicate approximate resistance.DMM test points: R+ and R- test points allow measurement of exact resistance with a DMM.Kit format: Includes parts for assembly and is suitable for soldering practice.Bring your own LED: LEDs are not included so you can test your own parts.Specifications:Board mounting: Designed to slot into the power rails of a breadboard.Board stacking: Stack up to 10 boards next to each other.LED footprints: 5 different footprints for different sizes of LEDs (SMD and through-hole).LED population: Only one LED should be added to each board.Potentiometer: 10k linear potentiometer.Series resistor: 100 Ohm resistor.Test points: R+ and R-.Resistance measurement: Measure the exact resistance with a DMM.Included: PCB.Included: Potentiometer.Included: 100 Ohm resistor.Included: Headers for connecting into a breadboard.LEDs: NOT included with this kit.Assembly: The kit does not come pre-assembled.","vendor":"SparkFun","product_type":"LED Kit","in_stock":true,"options":[],"variants":[{"id":16296,"title":"Default Title","sku":"SF-SPX-21226","mpn":"SPX-21226","price":9.2,"on_sale":false,"in_stock":true,"available_quantity":92}]}