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ULN2003 Stepper Motor Driver Board
Drive stepper motors and high-current loads effortlessly with the ULN2003 driver board from The Engineer Store, Bengaluru. This compact breakout board integrates the popular ULN2003A Darlington transistor array, providing seven high-voltage, high-current open-collector outputs - ideal for controlling 28BYJ-48 stepper motors, relays, solenoids, LED strips, and other inductive loads directly from microcontrollers like Arduino, ESP32, and Raspberry Pi. Onboard LED indicators for each channel give instant visual feedback of output status. Fast shipping across India with a 7-day warranty on manufacturing defects and dedicated technical support.
Specifications
| IC Chip | ULN2003A (7-channel Darlington transistor array) |
| Number of Channels | 7 (independent high-current outputs) |
| Output Type | Open-collector Darlington pairs with integrated flyback diodes |
| Input Voltage (Logic) | 3.3V - 5V (TTL/CMOS compatible) |
| Motor/Load Supply Voltage | 5V - 12V DC (up to 50V max per ULN2003A datasheet) |
| Max Output Current | 500mA per channel (peak), recommended continuous ~300mA |
| Total IC Rating | Up to 2.5A aggregate across all channels (with thermal considerations) |
| Stepper Motor Connector | 5-pin female header (direct plug for 28BYJ-48 stepper motor) |
| Input Header | 4-pin or 7-pin male header for microcontroller connections (IN1-IN4 / IN1-IN7) |
| LED Indicators | 4 or 7 onboard LEDs (one per active channel for status monitoring) |
| Flyback Protection | Built-in suppression diodes on each output for inductive load protection |
| Board Dimensions | Approximately 30mm x 35mm (compact form factor) |
| Mounting | Screw holes / standoff compatible for secure project mounting |
| Operating Temperature | -20 degreesC to +70 degreesC |
| Compatibility | Arduino UNO/Nano/Mega, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other 3.3V/5V logic MCUs |
| Primary Use | 28BYJ-48 unipolar stepper motor driving, relay control, solenoid driving, LED array switching |
| Type | Motor Driver / Darlington Array Breakout Board |
| Origin | Original / Authentic ULN2003A IC |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 Technical Support |
Key Features
- 7 Darlington Pair Outputs: Each channel can sink up to 500mA, making it capable of driving stepper motors, relays, solenoids, lamps, and other medium-power loads that microcontroller GPIO pins cannot handle directly.
- Direct 28BYJ-48 Compatibility: The onboard 5-pin connector allows plug-and-play connection to the widely used 28BYJ-48 unipolar stepper motor - no additional wiring or adapters needed.
- Built-in Flyback Diodes: Integrated suppression diodes on every output channel protect your circuit from voltage spikes generated by inductive loads such as motors, relays, and solenoids during switching.
- 3.3V & 5V Logic Compatible: Input pins accept both 3.3V and 5V logic levels, ensuring seamless interfacing with Arduino, ESP32, ESP8266, Raspberry Pi GPIO, STM32, and virtually any popular development board.
- Onboard LED Status Indicators: Individual LEDs on each output channel provide real-time visual confirmation of which outputs are active - invaluable for debugging and monitoring during development.
- Compact & Breadboard-Friendly: The small PCB footprint fits easily on breadboards, perfboards, or inside project enclosures, and mounting holes allow secure installation in permanent builds.
- Simple Wiring: Connect microcontroller digital pins to the input header, attach your motor or load to the output connector, supply power, and you're ready - minimal external components required.
- Versatile Beyond Stepper Motors: While optimized for stepper motor control, each channel works independently for switching relays, LED strips, buzzers, solenoid valves, DC motors (single direction), and other loads.
Why Choose The Engineer Store?
- 100% authentic ULN2003A IC - sourced from trusted, authorized component distributors to guarantee genuine performance and reliability.
- 1-5 day shipping from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
- Expert technical support included - our engineering team assists with wiring, code, and integration via email and WhatsApp around the clock.
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy ULN 2003 board Online in India
Purchase the ULN 2003 board online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on ULN 2003 board with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy ULN 2003 board at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
ULN2003 Stepper Motor Driver Board
Drive stepper motors and high-current loads effortlessly with the ULN2003 driver board from The Engineer Store, Bengaluru. This compact breakout board integrates the popular ULN2003A Darlington transistor array, providing seven high-voltage, high-current open-collector outputs - ideal for controlling 28BYJ-48 stepper motors, relays, solenoids, LED strips, and other inductive loads directly from microcontrollers like Arduino, ESP32, and Raspberry Pi. Onboard LED indicators for each channel give instant visual feedback of output status. Fast shipping across India with a 7-day warranty on manufacturing defects and dedicated technical support.
Specifications
| IC Chip | ULN2003A (7-channel Darlington transistor array) |
| Number of Channels | 7 (independent high-current outputs) |
| Output Type | Open-collector Darlington pairs with integrated flyback diodes |
| Input Voltage (Logic) | 3.3V - 5V (TTL/CMOS compatible) |
| Motor/Load Supply Voltage | 5V - 12V DC (up to 50V max per ULN2003A datasheet) |
| Max Output Current | 500mA per channel (peak), recommended continuous ~300mA |
| Total IC Rating | Up to 2.5A aggregate across all channels (with thermal considerations) |
| Stepper Motor Connector | 5-pin female header (direct plug for 28BYJ-48 stepper motor) |
| Input Header | 4-pin or 7-pin male header for microcontroller connections (IN1-IN4 / IN1-IN7) |
| LED Indicators | 4 or 7 onboard LEDs (one per active channel for status monitoring) |
| Flyback Protection | Built-in suppression diodes on each output for inductive load protection |
| Board Dimensions | Approximately 30mm x 35mm (compact form factor) |
| Mounting | Screw holes / standoff compatible for secure project mounting |
| Operating Temperature | -20 degreesC to +70 degreesC |
| Compatibility | Arduino UNO/Nano/Mega, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other 3.3V/5V logic MCUs |
| Primary Use | 28BYJ-48 unipolar stepper motor driving, relay control, solenoid driving, LED array switching |
| Type | Motor Driver / Darlington Array Breakout Board |
| Origin | Original / Authentic ULN2003A IC |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 Technical Support |
Key Features
- 7 Darlington Pair Outputs: Each channel can sink up to 500mA, making it capable of driving stepper motors, relays, solenoids, lamps, and other medium-power loads that microcontroller GPIO pins cannot handle directly.
- Direct 28BYJ-48 Compatibility: The onboard 5-pin connector allows plug-and-play connection to the widely used 28BYJ-48 unipolar stepper motor - no additional wiring or adapters needed.
- Built-in Flyback Diodes: Integrated suppression diodes on every output channel protect your circuit from voltage spikes generated by inductive loads such as motors, relays, and solenoids during switching.
- 3.3V & 5V Logic Compatible: Input pins accept both 3.3V and 5V logic levels, ensuring seamless interfacing with Arduino, ESP32, ESP8266, Raspberry Pi GPIO, STM32, and virtually any popular development board.
- Onboard LED Status Indicators: Individual LEDs on each output channel provide real-time visual confirmation of which outputs are active - invaluable for debugging and monitoring during development.
- Compact & Breadboard-Friendly: The small PCB footprint fits easily on breadboards, perfboards, or inside project enclosures, and mounting holes allow secure installation in permanent builds.
- Simple Wiring: Connect microcontroller digital pins to the input header, attach your motor or load to the output connector, supply power, and you're ready - minimal external components required.
- Versatile Beyond Stepper Motors: While optimized for stepper motor control, each channel works independently for switching relays, LED strips, buzzers, solenoid valves, DC motors (single direction), and other loads.
Why Choose The Engineer Store?
- 100% authentic ULN2003A IC - sourced from trusted, authorized component distributors to guarantee genuine performance and reliability.
- 1-5 day shipping from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
- Expert technical support included - our engineering team assists with wiring, code, and integration via email and WhatsApp around the clock.
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy ULN 2003 board Online in India
Purchase the ULN 2003 board online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on ULN 2003 board with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy ULN 2003 board at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.