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Arduino MKR Zero - 32-Bit SAMD21 Board with Built-In SD Card Slot
Build advanced audio, data-logging, and IoT projects with the Arduino MKR Zero. Powered by the Microchip SAMD21 Cortex-M0+ 32-bit ARM processor and featuring a built-in micro-SD card slot with dedicated SPI interfaces, this compact board is purpose-built for rich audio playback, high-speed data storage, and portable battery-powered applications. Available now at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Board | Arduino MKR Zero (ABX00012) |
| Microcontroller | Microchip SAMD21 Cortex-M0+ 32-bit ARM MCU |
| Operating Voltage | 3.3 V |
| Clock Speed | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Digital I/O Pins | 22 (12 PWM capable) |
| Analog Input Pins | 7 (8/10/12-bit ADC) |
| Analog Output Pins | 1 (10-bit DAC) |
| Storage | Built-in Micro-SD card slot (dedicated SPI) |
| Audio | I2S bus interface for digital audio |
| Connectivity | UART, SPI, I2C, USB |
| USB | Micro-USB (native USB / programming / power) |
| Power Input | USB 5 V or Li-Po single-cell 3.7 V battery (JST connector) |
| Battery Charging | Built-in Li-Po charging circuit via USB |
| Board Dimensions | 61.5 mm x 25 mm |
| Form Factor | MKR standard (compatible with all MKR shields & carriers) |
| Weight | ~32 g |
| Origin | 100% Original Arduino - Authorized Stock |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp Technical Support 24/7 |
Key Features
- 32-Bit ARM Power: SAMD21 Cortex-M0+ at 48 MHz delivers significantly more processing headroom than 8-bit Arduino boards, enabling real-time audio, complex math, and multi-sensor projects.
- Built-In Micro-SD Card Slot: Dedicated SPI bus for the SD card means you can read/write files without conflicting with other SPI peripherals - ideal for data logging and WAV file playback.
- I2S Digital Audio Bus: Native I2S interface lets you connect digital audio DACs, amplifiers, and MEMS microphones for high-quality sound projects without bit-banging.
- True Analog Output (DAC): 10-bit DAC on pin A0 produces genuine analog voltages - perfect for waveform generation, audio synthesis, and analog control signals.
- Li-Po Battery Ready: On-board JST connector and integrated charging circuit let you run portable projects on a single-cell Li-Po battery that charges automatically when USB is connected.
- MKR Ecosystem Compatible: Plug directly into MKR shields (MKR Relay Proto, MKR ENV, MKR GPS, MKR Motor Carrier, etc.) and MKR carrier boards for rapid prototyping.
- 3.3 V Logic: Native 3.3 V operation for direct interfacing with modern sensors, displays, and wireless modules without level shifters.
- Native USB: Appears as a virtual COM port - no external FTDI chip needed. Also supports USB HID (keyboard/mouse emulation) and USB MIDI.
- Compact MKR Form Factor: At just 61.5 x 25 mm, it fits into enclosures, wearables, and space-constrained designs with ease.
Why Choose the Arduino MKR Zero?
- Audio Projects Made Simple: The combination of I2S, DAC, and on-board SD card makes this the easiest Arduino board for music players, sound effects machines, talking alarm systems, and interactive audio installations.
- Reliable Long-Term Data Logging: Dedicated SD SPI bus ensures stable, high-speed logging even while communicating with sensors on the main SPI/I2C lines - critical for weather stations, environmental monitors, and scientific instruments.
- Go Portable Instantly: Connect a Li-Po battery, load your sketch, and deploy anywhere. The on-board charger keeps things simple - no external charging modules required.
- Gateway to the MKR Ecosystem: Start with MKR Zero, then add Wi-Fi (MKR WiFi 1010), LoRa (MKR WAN 1310), NB-IoT (MK
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 MKR Zero Online in India
Purchase the MKR Zero 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 MKR Zero 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 MKR Zero 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.
Arduino MKR Zero - 32-Bit SAMD21 Board with Built-In SD Card Slot
Build advanced audio, data-logging, and IoT projects with the Arduino MKR Zero. Powered by the Microchip SAMD21 Cortex-M0+ 32-bit ARM processor and featuring a built-in micro-SD card slot with dedicated SPI interfaces, this compact board is purpose-built for rich audio playback, high-speed data storage, and portable battery-powered applications. Available now at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Board | Arduino MKR Zero (ABX00012) |
| Microcontroller | Microchip SAMD21 Cortex-M0+ 32-bit ARM MCU |
| Operating Voltage | 3.3 V |
| Clock Speed | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Digital I/O Pins | 22 (12 PWM capable) |
| Analog Input Pins | 7 (8/10/12-bit ADC) |
| Analog Output Pins | 1 (10-bit DAC) |
| Storage | Built-in Micro-SD card slot (dedicated SPI) |
| Audio | I2S bus interface for digital audio |
| Connectivity | UART, SPI, I2C, USB |
| USB | Micro-USB (native USB / programming / power) |
| Power Input | USB 5 V or Li-Po single-cell 3.7 V battery (JST connector) |
| Battery Charging | Built-in Li-Po charging circuit via USB |
| Board Dimensions | 61.5 mm x 25 mm |
| Form Factor | MKR standard (compatible with all MKR shields & carriers) |
| Weight | ~32 g |
| Origin | 100% Original Arduino - Authorized Stock |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp Technical Support 24/7 |
Key Features
- 32-Bit ARM Power: SAMD21 Cortex-M0+ at 48 MHz delivers significantly more processing headroom than 8-bit Arduino boards, enabling real-time audio, complex math, and multi-sensor projects.
- Built-In Micro-SD Card Slot: Dedicated SPI bus for the SD card means you can read/write files without conflicting with other SPI peripherals - ideal for data logging and WAV file playback.
- I2S Digital Audio Bus: Native I2S interface lets you connect digital audio DACs, amplifiers, and MEMS microphones for high-quality sound projects without bit-banging.
- True Analog Output (DAC): 10-bit DAC on pin A0 produces genuine analog voltages - perfect for waveform generation, audio synthesis, and analog control signals.
- Li-Po Battery Ready: On-board JST connector and integrated charging circuit let you run portable projects on a single-cell Li-Po battery that charges automatically when USB is connected.
- MKR Ecosystem Compatible: Plug directly into MKR shields (MKR Relay Proto, MKR ENV, MKR GPS, MKR Motor Carrier, etc.) and MKR carrier boards for rapid prototyping.
- 3.3 V Logic: Native 3.3 V operation for direct interfacing with modern sensors, displays, and wireless modules without level shifters.
- Native USB: Appears as a virtual COM port - no external FTDI chip needed. Also supports USB HID (keyboard/mouse emulation) and USB MIDI.
- Compact MKR Form Factor: At just 61.5 x 25 mm, it fits into enclosures, wearables, and space-constrained designs with ease.
Why Choose the Arduino MKR Zero?
- Audio Projects Made Simple: The combination of I2S, DAC, and on-board SD card makes this the easiest Arduino board for music players, sound effects machines, talking alarm systems, and interactive audio installations.
- Reliable Long-Term Data Logging: Dedicated SD SPI bus ensures stable, high-speed logging even while communicating with sensors on the main SPI/I2C lines - critical for weather stations, environmental monitors, and scientific instruments.
- Go Portable Instantly: Connect a Li-Po battery, load your sketch, and deploy anywhere. The on-board charger keeps things simple - no external charging modules required.
- Gateway to the MKR Ecosystem: Start with MKR Zero, then add Wi-Fi (MKR WiFi 1010), LoRa (MKR WAN 1310), NB-IoT (MK
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 MKR Zero Online in India
Purchase the MKR Zero 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 MKR Zero 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 MKR Zero 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.