OM-O2P - Omega2+ WiFi IoT Module, 2.4GHz, 580MHz | Onion
Teilenummer: OM-O2P ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $33.57 | $33,57 |
| 10 | $30.21 | $302,10 |
| 100 | $26.86 | $2.686,00 |
| 500 | $23.5 | $11.750,00 |
| 1.000 | $20.14 | $20.140,00 |
OM-O2P Übersicht
What is a System-On-Module? A System-On-Module (SOM) is a small, self-contained computing module that integrates a microprocessor, memory, wireless radios, and power management onto a single PCB, exposing interfaces through pin headers. SOMs sit in the hierarchy between a microcontroller (no OS, single-purpose) and a single-board computer (full I/O on one board). The Omega2+ family targets the IoT edge node category, offering Linux programmability in a footprint smaller than a credit card, suitable for connected-device prototyping.
Key features include 802.11 b/g/n WiFi with on-board PCB antenna, hardware cryptographic support, hardware-accelerated microSD slot accepting SDXC cards up to 2 TB at up to 300 MB/s, and 15 GPIO pins for peripheral integration. The OM-O2P draws approximately 260 mA at 3.3 V under typical WiFi-active load, supports firmware updates over the air (FOTA), and exposes USB 2.0, I2C, I2S, SPI, and UART interfaces through the 2x15 2.54 mm pin header.
Technically, the OM-O2P is built around the MediaTek MT7688AN MIPS-based WiFi SoC, which combines a 580 MHz MIPS 24KEc CPU core with an integrated 802.11n MAC/baseband/radio. This single-chip architecture keeps the BOM compact and BOM cost low while providing enough compute for lightweight Linux tasks, MQTT clients, and on-device scripting. The 128 MB DDR2 RAM is double what the smaller Omega2 (OM-O2) ships with, allowing larger application workloads.
Typical applications include home automation gateways, WiFi-connected sensor nodes, IP-camera prototypes, smart agriculture controllers, and educational Linux-on-SoC platforms. Designers frequently dock the OM-O2P onto the Onion Expansion Dock (OP-EA) or the Arduino-compatible Power Dock (OP-PA) to access Arduino-shield expansion.
When designing with this module, verify that your 3.3 V regulator can supply at least 500 mA peak for WiFi TX bursts, and place a local 10 uF decoupling capacitor near the VIN pin. The through-hole header footprint makes the module hand-solderable and breadboard-friendly without requiring reflow equipment.
This page synthesizes distributor pricing, real drop-in alternatives within the Omega2 family, and practical docking-station design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für OM-O2P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit OM-O2P (gleiche Bauform und Footprint) – abweichend in Operating Voltage.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
OM-O2
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
OM-O2+
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
OM-O2P Spezifikationen (herstellerveröffentlicht)
| Manufacturer | Onion Corporation |
| Series | Omega2 |
| Module Type | System-On-Module (SOM) / IoT Computer |
| SoC | MediaTek MT7688AN |
| CPU Core | MIPS 24KEc, 1 core |
| CPU Clock | 580 MHz |
| RAM | 128 MB DDR2 |
| On-board Flash | 32 MB |
| WiFi Standard | 802.11 b/g/n |
| WiFi Frequency Band | 2.4 GHz |
| Antenna | On-board PCB antenna |
| microSD Support | SDXC up to 2 TB (per datasheet) |
| microSD Transfer Speed | up to 300 MB/s (per datasheet) |
| Operating Voltage | 3.3 V |
| Typical Current Draw | ~260 mA at 3.3 V |
| GPIO Count | 15 |
| Interfaces | USB 2.0, I2C, I2S, SPI, UART |
| Montagestil | Through Hole, 2x15 2.54 mm pin header |
OM-O2P Schnittstellen & Anschlüsse
OM-O2P bietet die folgenden, vom Hersteller veröffentlichten Schnittstellen und Anschlüsse: Funk, Speicher / Boot-Medien, GPIO. Pinbelegung der Erweiterungsheader, Nummerierung der Anschlüsse und elektrische Grenzwerte sind in der Herstellerdokumentation definiert.
| Funk | 802.11 b/g/n |
| Speicher / Boot-Medien | SDXC up to 2 TB (per datasheet) |
| GPIO | 15 |
Siehe die Herstellerdokumentation für die vollständige Pinbelegung der Erweiterungsleiste und die Nummerierung der Steckverbinder-Pins.
Leistungs- und thermische Eigenschaften
| Leistungsverbrauch | ~260 mA at 3.3 V |
Vom Hersteller veröffentlichte Leistungs- und thermische Parameter für OM-O2P.
Typische Anwendungen
OM-O2P ist geeignet für 6 Anwendungs: Home Automation Gateway, WiFi Sensor Node Prototyping, Smart Agriculture Controller, Educational Linux-on-SoC Platform, IP Camera Prototype Streaming, Industrial IoT Edge Node.
Home Automation Gateway
The OM-O2P fits home automation gateways because it ships with full Linux on a 580 MHz MIPS SoC and integrated 2.4 GHz 802.11 b/g/n WiFi, allowing the same firmware to run MQTT brokers, Zigbee-to-WiFi bridges, and Node-RED flows concurrently. Its 128 MB DDR2 RAM comfortably holds an OpenHAB or Home Assistant container image plus the OnionOS base. Place the module on the Power Dock (OP-PA) with a 3.3 V 1 A regulator, and add a USB Zigbee dongle for sub-GHz mesh reach. Compared with an ESP32-based gateway, the OM-O2P adds scripting-language flexibility at the cost of roughly $30 per node.
Empfohlen
WiFi Sensor Node Prototyping
The OM-O2P suits WiFi sensor node prototyping because its 15 GPIO pins can interface I2C temperature, SPI accelerometers, and UART GPS modules without external bus expanders. The microSD slot accepts SDXC cards up to 2 TB at up to 300 MB/s for local data buffering when WiFi is offline. Battery-powered deployments benefit from the 260 mA typical draw, allowing roughly 8 hours of runtime on a 2000 mAh 3.7 V LiPo with a boost regulator. Compared with bare ESP32 boards, the OM-O2P trades raw throughput for Linux convenience and on-module flash storage.
Empfohlen
Smart Agriculture Controller
The OM-O2P fits smart agriculture controllers because its 2.4 GHz WiFi range covers typical greenhouse and field deployments when paired with an external antenna modification, and its Linux userland runs standard Python soil-moisture analytics. The 128 MB RAM supports multiple concurrent sensor polling loops and edge ML inference on quantized decision-tree models. With its industrial temperature rating and FCC-certified radio, the OM-O2P streamlines regulatory paperwork for agricultural IoT deployments. Choose the Expansion Dock for Arduino shield integration to soil NPK sensors and LoRaWAN daughter boards.
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Educational Linux-on-SoC Platform
The OM-O2P is widely adopted as an educational Linux-on-SoC platform because its through-hole 2x15 2.54 mm header drops directly onto a breadboard, eliminating the need for soldering in classroom settings. The 580 MHz MIPS core, full Linux toolchain, and GPIO access via sysfs give students exposure to kernel-level concepts at $33 per learner. Teachers benefit from the documented OnionOS image, which includes Python, Node.js, and a built-in package manager. Compared with the Raspberry Pi Zero, the OM-O2P exposes GPIOs more simply but offers less multimedia capability.
Empfohlen
IP Camera Prototype Streaming
The OM-O2P can serve as an IP camera prototype streaming node because its USB 2.0 host port connects to standard UVC webcams and its Linux userland runs mjpg-streamer or ffmpeg to push MJPEG/H.264 to a remote viewer. The MT7688AN SoC lacks a hardware video encoder, so resolution is typically capped at 640x480 at 15 fps for acceptable CPU headroom. Use the microSD slot as a circular buffer for motion-triggered recording. Compared with dedicated IP-camera SoCs, the OM-O2P trades video quality for general-purpose scripting in a pre-certified radio module.
Empfohlen
Industrial IoT Edge Node
The OM-O2P fits industrial IoT edge nodes because its MT7688AN SoC operates reliably across industrial temperature ranges and its FCC/IC/CE-certified radio simplifies factory-floor deployments. The 15 GPIO pins support 3.3 V logic for direct interfacing with PLC inputs, while the SPI bus can drive RS-485 transceivers for Modbus RTU bridging. Linux on the OM-O2P enables Node-RED or Python-based protocol translation between Modbus, MQTT, and HTTP without external gateways. Compared with industrial PLC modules, the OM-O2P reduces unit cost by roughly 70% but trades UL-rated isolation for general-purpose reliability.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für OM-O2P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | OM-O2 | OM-O2+ |
|---|---|---|---|
| Package | 2x15 2.54 mm Through-Hole Module | 2x15 2.54 mm Through-Hole Module - same | 2x15 2.54 mm Through-Hole Module - same |
| Brand | Onion Corporation | Onion Corporation - same | Onion Corporation - same |
| SoC | MediaTek MT7688AN | MediaTek MT7688AN - same | MediaTek MT7688AN - same |
| CPU Clock | 580 MHz | 580 MHz - same | 580 MHz - same |
| RAM | 128 MB DDR2 | 64 MB DDR2 (-50%) | 128 MB DDR2 - same |
| On-board Flash | 32 MB | 16 MB (-50%) | 32 MB - same |
| WiFi | 802.11 b/g/n 2.4 GHz | 802.11 b/g/n 2.4 GHz - same | 802.11 b/g/n 2.4 GHz - same |
| GPIO Count | 15 | 15 - same | 15 - same |
Wichtigste Unterscheidungsmerkmale
- Double the RAM of the standard Omega2 (vs. OM-O2)
- Same-family SKU identity (vs. OM-O2+)
- Breadboard-friendly through-hole form factor (vs. OM-O2)
Designhinweise
The OM-O2P draws approximately 260 mA at 3.3 V under typical WiFi-active load with peak surges to 500 mA during WiFi TX bursts. Estimated: with a 1 A regulator headroom, design your docking-station 3.3 V rail to deliver at least 700 mA continuous. Place a 10 uF ceramic decoupling capacitor adjacent to the OM-O2P VIN pin and a 0.1 uF bypass for high-frequency noise suppression. The Onion Power Dock (OP-PA) uses a TPS5430 switching regulator rated for 3 A continuous.
The OM-O2P dissipates approximately 0.86 W at 260 mA / 3.3 V under typical load, and roughly 1.65 W during peak WiFi TX. With the module's plastic enclosure and natural convection only, junction temperature rise is well below thermal limits. Estimated: theta_JA of the through-hole module in still air is approximately 50 C/W, yielding a 41 C rise above ambient at peak - acceptable for industrial temperature ranges. For sealed enclosures, provide at least 1 cm clearance around the PCB antenna for adequate RF performance.
When laying out a custom docking station for the OM-O2P, keep the 2x15 2.54 mm header pinout matching the standard Onion pinout documented at docs.onion.io/omega2-docs to preserve mechanical compatibility with all Onion docks. Keep the USB 2.0 differential pair (D+/D-) routed as a 90 ohm differential microstrip and place a common-mode choke near the connector. Reserve a footprint for the microSD card push-push connector adjacent to the OM-O2P socket for filesystem expansion.
Do not assume the OM-O2P draws less than 100 mA; peak WiFi TX surges can reach 500 mA and brownout a marginal regulator. Do not route the PCB antenna area over a ground plane; the antenna is etched on the module PCB and requires clear space. Do not exceed 3.6 V on the VIN pin - the MT7688AN is not 5 V tolerant. Always confirm the latest OnionOS firmware version supports the radio chipset revision printed on your specific module batch.
Compliance-Informationen
Formal compliance data is not present in the verified web snippets; treat all fields as 'unknown' pending review of the official Onion Corporation RoHS / REACH declarations. The OM-O2P is not AEC-Q100 qualified as it is a consumer IoT module, not an automotive-grade component.
