HiLetgo 4pcs L298N Motor Driver Controller Board Module Stepper Motor DC Dual H-Bridge for Arduino Smart Car Power UNO MEGA R3 Mega2560 L298N as main driver chip makes strong driving ability/small heating/strong anti-interference/low calorific value Use large-capacity filter capacitors and diode with freewheeling protection function, increasing reliability Dual-channel H-bridge driver working mode creates higher working efficiency To avoid damage the voltage stabilizing chip, please use an external 5V logic supply when using more than 12V driving voltage Large capacity filter capacitance, afterflow protection diode, more stable and reliable