Kiro & Seeu 5PCS LM2596 LM2596S DC-DC Step Down Variable Volt Regulator: Input 3.0-40V, Output 1.5-35V, Adjustable Buck Converter for Electronic Voltage Stabilization & Power Supply Module Review

【High Precision】 High-precision potentiometer, stepping up clockwise, stepping down counterclockwise. Superior solid-state capacitors that can effectively filter out high frequency noise. Suitable for various electronic projects. 【Input Voltage】 DC 3.2V to 40V (input voltage must be 1.5V higher than the output voltage, no boost). 【Output Voltage】 DC 1.25V to 35V voltage is continuously adjustable, maximum output current is 3A. 【Easy to DIY】 Connect to power source, using a mini screwdriver to increase or decrease output voltage by adjusting the screw on the blue potentiometer and monitor voltage with multimeter to get the needed voltage, clockwise to step up voltage and counterclockwise to step down voltage. (Factory default stays a high voltage, you need to contrarotate about 7-15 circles before the voltage starts ramping down, 1 circle means +/- 1V). 【Steps to Use】 Connect to power source, adjust the swirl button on the blue potentiometer and monitor voltage with multimeter to get the needed voltage (The factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down.