{"title":"Adjustable breadboard power supply kit [v1.0]","handle":"adjustable-breadboard-power-supply-kit-v1-0","url":"/products/adjustable-breadboard-power-supply-kit-v1-0","description":"Build your own breadboard-friendly adjustable power supply with this soldering kit. Based on the MIC2941 low-dropout regulator, it provides a guaranteed 1.25A output with only 40–400 mV dropout — far better than the LM317's typical 1.25–2.0V. This means you can generate 3.3V from as low as 3.7V input (three AAs or a lithium-ion battery).\n\nThe kit includes all components and a PCB, ready to assemble in about 30–45 minutes with basic soldering skills. An output selection switch lets you quickly choose between 3.3V, 5V, or a continuously adjustable voltage via the onboard potentiometer.\n\nKey Features\n\n\nMIC2941 Low-Dropout Regulator – 1.25A guaranteed output with only 40–400 mV dropout\n\n3 Output Modes – Switch between 3.3V, 5V, or adjustable (1.25V to input voltage minus 0.5V, 20V max)\n\nOnboard Potentiometer – Fine-tune the adjustable output voltage\n\nShort Circuit & Overheating Protection – Built-in safety features\n\nInput Protection Diode – Guards against negative voltages or AC power supplies\n\nDual Input Options – 2.1 mm DC jack and screw terminal connector\n\nDual Indicator LEDs – Visual feedback for high and low voltages\n\nOn/Off Switch – Power control for the entire board\n\nHeat Sink Included – Keeps the regulator cool under load\n\n\nIdeal For\n\nPowering breadboard circuits at 3.3V or 5V\nProjects requiring adjustable voltage from battery or DC supply\nBeginner-friendly soldering practice\nWorkbench power supply for prototyping\n\n\nPackage Contents\n\n1× PCB and all components (unassembled soldering kit)\n1× Heat sink\n\n\n\nNote: Breadboard, battery clip, and DC power supply are not included. Requires a soldering iron, solder, and diagonal cutters for assembly.\n\n\nResources\n\nAssembly Guide & Project Page (Adafruit Learn)\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":11581,"title":"Default Title","sku":"AF-184","price":31.15,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":50,"option1":"Default Title"}]}