Electrifier L293D Motor Driver Shield for ATmega328P Boards, 4 DC Motors

Building a robot car, a camera slider or a small automation rig means driving several motors at once, and doing that from bare microcontroller pins is neither safe nor practical. The Electrifier L293D Motor Driver Shield solves this in one stackable board: two ST L293D H-bridge driver ICs provide four bidirectional DC motor channels, each rated at 0.6A continuous and 1.2A peak per the L293D datasheet, with chip-level thermal shutdown built into each driver IC. The same hardware reconfigures for two stepper motors with single, double, interleaved and micro-step drive modes, while two dedicated 5V servo headers sit on hardware timer pins — so a differential-drive chassis with a pan-tilt servo head runs from this one shield. An onboard Texas Instruments SN74HC595N shift register manages the direction logic, keeping more controller pins free for sensors, and mature open-source motor libraries mean the code side is a few lines, not a weekend project. The shield uses the standard R3 stackable layout, dropping straight onto ATmega328P and ATmega2560 based development boards with headers passed through for additional expansion. Wiring stays clean in real use: screw terminal blocks for all four motor outputs, a separate EXT_PWR terminal so the motor supply never shares a rail with your logic, a power-select jumper for single-supply setups, and a reset button that remains reachable after the shield is stacked. It suits students building line followers and obstacle-avoidance bots, hobbyists working on RC and gear-motor projects, and engineers prototyping multi-motor control before committing to custom hardware. Every Electrifier module ships with a one-year warranty and comes from ISO-certified manufacturing, with specifications published from component datasheets rather than recycled seller claims.