Raspberry Pi Zero
Raspberry Pi Zero Series — 65 × 30 mm Linux SBC — Zero v1.3 / Zero W / Zero 2 W The Raspberry Pi Zero series squeezes a full Linux...
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Raspberry Pi Zero Series — 65 × 30 mm Linux SBC — Zero v1.3 / Zero W / Zero 2 W
The Raspberry Pi Zero series squeezes a full Linux computer into a 65 × 30 mm board, making it one of the most affordable ways to get a real Linux node into any project. All three variants — Zero v1.3, Zero W, and Zero 2 W — share the same footprint, 40-pin GPIO pinout, and HAT ecosystem, so you can prototype on one model and drop in a faster or wireless-capable variant later without redesigning your enclosure or wiring.
Key Highlights
- Ultra-compact 65 × 30 mm footprint — identical across all three variants, so you can fit the board inside enclosures, robots, and wearables that a full-size Pi would never reach.
- Full Raspberry Pi OS support — runs the complete Linux software stack with Python, Node.js, and apt; the Zero 2 W additionally supports the official 64-bit OS image for broader modern package compatibility.
- 40-pin HAT-compatible GPIO header — 26 usable GPIO pins with SPI, I²C, UART, and PWM; works with thousands of off-the-shelf HATs, sensor breakouts, and motor driver boards.
- CSI-2 camera connector on every model — the 22-pin flat-flex port connects to official Raspberry Pi camera modules (a Zero-specific ribbon adapter is needed), enabling time-lapse photography, IP cameras, and computer vision projects.
- Built-in Wi-Fi 802.11n + Bluetooth on W variants — the Zero W adds 2.4 GHz wireless and Bluetooth 4.1, the Zero 2 W upgrades to Bluetooth 4.2; no USB dongles or hubs required for wireless connectivity.
- Quad-core Cortex-A53 on the Zero 2 W — delivers roughly 5× the multi-threaded throughput of the single-core Zero v1.3/W, opening the door to Python web servers, OpenCV frame processing, and N64/PSX emulation.
- Mini HDMI output up to 1080p — useful for setup, kiosk displays, and media playback; a standard mini-to-full HDMI adapter gives you a full desktop view in seconds.
- Micro USB OTG port — works as a USB gadget device (serial console, Ethernet adapter, HID emulator) or, with an OTG cable, hosts keyboards, drives, and USB hubs.
- MicroSD bootable storage — no soldering, no lock-in — flash any OS image to a Class 10 card (8–32 GB recommended) and swap it out in seconds; no eMMC to worry about.
- Active production with stable, competitively low pricing — all three models remain in full production by the Raspberry Pi Foundation with unchanged official MSRP, making them safe to spec into long-running projects.
Technical Specifications
| Feature | Zero v1.3 | Zero W | Zero 2 W |
| SoC | Broadcom BCM2835 | Broadcom BCM2835 | RP3A0 (BCM2710A1) |
| CPU | 1-core ARM11 @ 1 GHz | 1-core ARM11 @ 1 GHz | 4-core Cortex-A53 @ 1 GHz |
| Architecture | ARMv6, 32-bit | ARMv6, 32-bit | ARMv8, 32/64-bit |
| RAM | 512 MB SDRAM | 512 MB SDRAM | 512 MB LPDDR2 |
| Storage | MicroSD (Class 10+) | MicroSD (Class 10+) | MicroSD (Class 10+) |
| Wi-Fi | None | 802.11n, 2.4 GHz | 802.11b/g/n, 2.4 GHz |
| Bluetooth | None | BT 4.1 + BLE | BT 4.2 + BLE |
| USB Port | 1× Micro USB OTG | 1× Micro USB OTG | 1× Micro USB OTG |
| Video Out | Mini HDMI (1080p) | Mini HDMI (1080p) | Mini HDMI (1080p) |
| Camera | CSI-2, 22-pin | CSI-2, 22-pin | CSI-2, 22-pin |
| GPIO Header | 40-pin (26 usable GPIO) | 40-pin (26 usable GPIO) | 40-pin (26 usable GPIO) |
| Power Input | 5V Micro USB, 1A min | 5V Micro USB, 1A min | 5V Micro USB, 2A rec. |
| 64-bit OS | No | No | Yes |
| Dimensions | 65 × 30 × 5 mm | 65 × 30 × 5 mm | 65 × 30 × 5 mm |
Which Zero Is Right for You?
The choice comes down to connectivity and how hard your software will push the CPU. Tethered sensor nodes and wired automation projects are well served by the no-frills Zero v1.3. Need wireless out of the box? The Zero W adds 802.11n and Bluetooth 4.1 and is the community's most popular IoT pick. For multi-threaded workloads — think OpenCV, a Pi-hole dashboard, or PSX emulation — the Zero 2 W and its quad-core Cortex-A53 are in a different league entirely.
| Criteria | Zero v1.3 | Zero W | Zero 2 W |
| CPU Performance | Basic — 1 core | Basic — 1 core | High — 4 cores, ~5× faster |
| Built-in Wireless | None | Wi-Fi + BT 4.1 | Wi-Fi + BT 4.2 |
| 64-bit OS Support | No | No | Yes |
| Best Use Case | Embedded / tethered nodes | IoT sensors & smart devices | Advanced IoT & light servers |
| Tier | Entry | Mid | Advanced |
Common Applications & Use Cases
- Pi-hole Network Ad Blocker — run Pi-hole on a Zero W or Zero 2 W to block ads across every device on your network; at roughly 2 W idle draw it runs around the clock for almost nothing on your electricity bill.
- IoT Sensor Networks — wire up temperature, humidity, or air-quality sensors over I²C or SPI and use the Zero W's built-in Wi-Fi to push readings to an MQTT broker or cloud dashboard without any USB adapters.
- Wireless Camera Node — attach an official Pi camera module via the CSI-2 connector for time-lapse photography, wildlife monitoring, or 1080p IP streaming over Wi-Fi; works on Zero W and Zero 2 W headlessly.
- Home Automation Controller — drive relays, LED strips, and servo motors through the GPIO pins, then tie everything into Home Assistant or Node-RED for a full smart-home automation stack at pocket-money cost.
- Retro Gaming Console with RetroPie — emulate NES, SNES, and Game Boy on any Zero model; step up to the Zero 2 W for N64 and PlayStation emulation that the single-core boards simply cannot handle.
- USB Gadget Device — configure the OTG port as a USB keyboard, mouse, serial console, or virtual Ethernet adapter; popular for portable security testing tools and plug-in automation devices.
- Lightweight Web Server — host static sites, REST APIs, or Flask/FastAPI microservices; the Zero 2 W handles modest request loads comfortably where the older single-core models would struggle under any real concurrency.
- DIY Weather Station — pair a BME280 or DHT22 sensor with the GPIO header and push readings to Grafana or a cloud IoT platform; the compact form factor fits neatly inside any standard Stevenson screen enclosure.
- Robotics & Embedded Motor Control — control DC motors and servos via PWM, read encoder pulses, and communicate with peripherals over UART; the tiny board keeps robot payload and PCB footprint to an absolute minimum.
- Classroom & Maker Education — budget-friendly enough to buy a set for a whole class; students can run Python, explore GPIO electronics, and experiment freely without the anxiety of damaging expensive hardware.
What's in the Box
- 1× Raspberry Pi Zero Series Board (variant as per selected option — Zero v1.3, Zero W, or Zero 2 W)
Not included: microSD card, 5V micro USB power supply, mini HDMI adapter, USB OTG adapter, and Pi camera ribbon cable (a Zero-specific 22-pin to 15-pin adapter is required for all camera modules). These accessories are available separately.
Frequently Asked Questions
Does the board come with a microSD card or an OS pre-installed?
No — all Zero models ship as a bare board. You'll need a Class 10 microSD card (8 GB minimum, 16–32 GB recommended) and a computer to flash the OS image. Download the free Raspberry Pi Imager, choose your OS (Raspberry Pi OS, DietPi, RetroPie, etc.), write it to the card, and you're ready to boot. The Zero 2 W also supports the official 64-bit OS image for a wider range of modern packages.
What power supply do I need? Will a phone charger work?
All three models are powered by 5V DC via micro USB. A stable 1A supply is sufficient for the Zero v1.3 and Zero W at idle. For the Zero 2 W under full load — or any model with USB peripherals attached — use a quality 5V/2A or 5V/2.5A supply. Many phone chargers are poorly regulated and trigger undervoltage warnings that cause SD card corruption and random reboots. Use a dedicated Pi power supply or a known-quality brand for reliable long-term operation.
Which operating systems are supported?
All three models support Raspberry Pi OS (32-bit), DietPi, OSMC, and RetroPie. The Zero 2 W also runs Raspberry Pi OS 64-bit and Ubuntu Server ARM64, which unlocks a broader range of modern packages. Important caveat: the Zero v1.3 and Zero W use an ARMv6 CPU — some newer runtimes (recent Node.js LTS, certain Go binaries) no longer ship ARMv6 builds, so verify your software stack's ARM architecture requirements before committing to those older boards.
Do I need to solder the GPIO header? Can I use standard HATs?
The Zero v1.3 and Zero 2 W ship with an unpopulated 40-pin header footprint — you solder on a standard 2×20 0.1-inch pin header yourself. If you'd rather skip the soldering iron, look for the pre-soldered H variants (Zero WH, Zero 2 WH) which come with headers already fitted. Once headers are in place, any standard Raspberry Pi HAT fits mechanically; always check the HAT's power budget against your supply rating to avoid brownouts.
Can I use Pi camera modules with these boards?
Yes — all three Zero models have the 22-pin CSI-2 camera connector. The connector is smaller than on full-size Pi boards, so you need a Zero-specific ribbon cable adapter (22-pin to 15-pin, sold separately). Official Raspberry Pi cameras — Camera Module 3, HQ Camera, and Camera Module v2 — all work. Most third-party CSI cameras are compatible too.
Is there Ethernet? How do I get wired internet?
No Zero model includes a built-in Ethernet port. For wired connectivity, connect a USB-to-Ethernet OTG adapter (ASIX AX88179 chipset is well supported) to the micro USB OTG port, or add a USB Ethernet HAT via the GPIO header. Real-world throughput will be capped at around 20–30 Mbps by the USB 2.0 bus. For most IoT work, the built-in Wi-Fi on the Zero W and Zero 2 W is the simpler and more practical option.
When should I pick the Zero W instead of the Zero 2 W?
The Zero W shines for always-on, mostly-idle tasks: MQTT sensor nodes, Bluetooth beacons, Pi-hole, or simple data loggers. If your workload is I/O-bound (waiting on sensors or network responses) the single-core W is usually plenty and draws a touch less power. The Zero 2 W earns its modest premium the moment your project is CPU-bound — multi-threaded Python, real-time frame analysis, a web dashboard, or PSX/N64 emulation. If in doubt, start with the Zero 2 W; you won't regret the headroom.
How do I connect a keyboard and mouse with only one USB port?
Use a USB OTG hub adapter to expand the single micro USB port into multiple full-size USB-A ports — keyboard, mouse, and USB drive all at once. That said, most users configure the board headlessly over SSH via Wi-Fi (Zero W / 2 W) or via USB gadget Ethernet (any model) and never need a physical keyboard after the initial setup. Enable SSH and Wi-Fi credentials directly in Raspberry Pi Imager before flashing for a truly zero-touch first boot.
Will my existing Raspberry Pi 3 or Pi 4 HATs and accessories work on the Zero?
The 40-pin GPIO header is electrically identical across all modern Pi models, so most HATs work on the Zero. Mechanical note: the Zero's smaller board means some HATs may overhang or need standoffs — check your HAT's mounting pattern. Power-hungry HATs (motor drivers, audio cards) must be verified against your supply's current rating. Camera ribbon cables are not cross-compatible — Pi 3/4 use a 15-pin CSI cable, the Zero needs a Zero-specific 22-pin to 15-pin adapter.
Is the Raspberry Pi Zero series still in production and supported in 2026?
Yes. As of May 2026, the Raspberry Pi Foundation confirms all three Zero models are in active production with stable, competitively low MSRP pricing — exempt from the component price increases affecting larger Pi models. Official OS images and Python tooling are fully maintained across all three variants. The Zero 2 W receives the most active software development attention, while the Zero v1.3 sees decreasing third-party package support due to its ARMv6 architecture — a key consideration if you're selecting a board for a multi-year deployment.
