MT3608 DC-DC Step-Up Boost Converter 2A Adjustable Power Module for Arduino

Convert a single-cell battery into a flexible power source with the MT3608 DC-DC step-up module — it steps low-voltage inputs (for example a 3.7V Li‑ion) up to common voltages such as 5V, 9V, or 12V for Arduino boards, motors, and sensors. The board operates from low inputs (around 2V) and can be adjusted for higher outputs commonly used up to about 28V, delivering reliable performance in portable projects. The switch-mode regulator is designed for efficiency (up to 93%) to preserve battery life, and a precision multi-turn trimmer lets you fine-tune the output; note the potentiometer may require roughly 15–20 counter-clockwise turns before the voltage begins to change. Compact and maker-focused, it’s a practical choice for DIY power solutions with up to 2A peak output and a high-sensitivity trimpot for accurate tuning.