OM-O2P-EVAL - Omega2+ IoT Eval Board | Onion | Wi-Fi 4
MPN: OM-O2P-EVAL ✓ Hoạt độngOM-O2P-EVAL Tóm tắt
An evaluation board (eval board or development kit) is a reference PCB produced by a module vendor that breaks out every signal of a system-on-module (SoM) into accessible headers and adds power regulation, USB, and user I/O so engineers can verify functionality with minimum hardware effort. In the embedded taxonomy, the OM-O2P-EVAL sits at the top of the stack: SoM -> evaluation board -> development platform -> IoT prototyping system. The Omega2+ itself is built around the MediaTek MT7688 SoC, which integrates a MIPS 24KEc CPU, 802.11 b/g/n radio, and peripheral controllers, making it a representative single-chip Wi-Fi 4 SoC for low-cost connected products.
Key features of the OM-O2P-EVAL include the bundled Omega2+ module (128 MB DDR2, 32 MB on-module flash), 2.4 GHz 802.11 b/g/n Wi-Fi 4 radio, USB 2.0 host/device ports, a Micro-USB power input, GPIO/SPI/I2C/UART headers, and a reset button. The kit is supported by the OnionOS Linux distribution and the Omega2 SDK, providing out-of-the-box firmware flashing and network onboarding. Because the radio subsystem and regulatory certification are inherited from the Omega2+ module, the eval board requires no separate FCC/IC/CE testing for the Wi-Fi portion when used in its stock configuration.
The architecture combines a single-chip Wi-Fi SoC (MT7688) with 16-bit DDR2 memory, hardware crypto engines, and a complete TCP/IP networking stack running on a Linux kernel. Performance is characterized by 580 MHz MIPS CPU clock, 128 MB RAM, and Wi-Fi throughput suitable for low-rate telemetry (typically a few Mbps in practice). Power consumption is dominated by the Wi-Fi radio and varies between ~150 mA (idle) and ~400 mA (active TX) at 3.3 V.
Typical applications include Wi-Fi sensor nodes, smart-home hubs, retrofit industrial telemetry, classroom IoT projects, and proof-of-concept connected products. The wide software support (Node.js, Python, C, mDNS, MQTT) makes it a flexible node for prototyping before porting firmware to custom hardware.
Design consideration: provide a stable 5 V / 1 A Micro-USB supply and avoid sharing that rail with noise-heavy motors; for production, migrate to a custom carrier that retains the Omega2+ SoM footprint to leverage the existing radio certification. This page synthesizes distributor inventory, drop-in alternatives, and engineering notes not found in a single manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho OM-O2P-EVAL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với OM-O2P-EVAL (cùng hình factor và footprint) — khác nhau ở Operating Voltage.
OM-O2-EVAL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
OM-O2P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →OM-O2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
OM-O2P-EVAL Thông số kỹ thuật (bản công bố của nhà sản xuất)
| Product Type | IoT Evaluation / Development Board |
| Bundled Module | Onion Omega2+ (OM-O2P) |
| Wireless Standard | 802.11 b/g/n (Wi-Fi 4), 2.4 GHz |
| Host SoC | MediaTek MT7688 (MIPS 24KEc) |
| CPU Clock | 580 MHz |
| On-module RAM | 128 MB DDR2 |
| On-module Flash | 32 MB |
| USB Interface | USB 2.0 host + Micro-USB device/power |
| Operating Voltage | 5 V via Micro-USB |
| GPIO Voltage | 3.3 V logic |
| User I/O | GPIO, SPI, I2C, UART headers |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Kiểu lắp đặt | Through-hole headers (breadboard-friendly) |
| Dimensions (approx.) | 49 mm x 35 mm carrier |
| Trạng thái RoHS | Compliant |
| Supported OS | OnionOS (Linux/OpenWrt-based) |
Giao diện và cáp kết nối OM-O2P-EVAL
OM-O2P-EVAL mở ra các giao diện và cáp kết nối sau được công bố bởi nhà sản xuất: Mạng无线, USB, GPIO. Các chân mở rộng, số thứ tự cáp kết nối và giới hạn điện học được xác định trong tài liệu hướng dẫn của nhà sản xuất.
| Mạng无线 | 802.11 b/g/n (Wi-Fi 4), 2.4 GHz |
| USB | USB 2.0 host + Micro-USB device/power |
| GPIO | 3.3 V logic |
Tham khảo: hướng dẫn của nhà sản xuất cho bản đồ chân cổng mở rộng và số thứ tự chân kết nối đầy đủ.
Đặc tính điện và nhiệt
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
Các thông số điện và nhiệt của OM-O2P-EVAL được công bố bởi nhà sản xuất.
Ứng dụng tiêu biểu
OM-O2P-EVAL phù hợp cho 6 Áp dụngs: Wi-Fi IoT Sensor Node, Smart Home Bridge / Hub, Retrofit Industrial Telemetry, Classroom IoT Education Platform, Proof-of-Concept Connected Product, Low-Cost Wireless Gateway for Sub-GHz Sensors.
Wi-Fi IoT Sensor Node
The OM-O2P-EVAL's 2.4 GHz 802.11 b/g/n (Wi-Fi 4) radio and Linux environment make it a strong fit for low-rate Wi-Fi sensor nodes that report temperature, humidity, or occupancy to a cloud broker. Per the Onion Omega2+ datasheet, the MT7688 SoC integrates a hardware crypto engine and WPA2 station mode, which lets a developer authenticate against an enterprise AP with a single command-line flag. The eval board exposes I2C and GPIO headers so an engineer can plug in a BME280 or similar sensor in minutes. The 128 MB of DDR2 in the bundled Omega2+ module comfortably runs Node.js or Python telemetry stacks, and a typical MQTT publish loop draws around 200 mA at 3.3 V.
Được đề xuất
Smart Home Bridge / Hub
For a smart-home bridge, the OM-O2P-EVAL offers enough compute headroom to run a home automation daemon (Home Assistant, openHAB, or a Node-RED flow) while serving as the Wi-Fi access point for sub-GHz or BLE peripherals. The MT7688 SoC handles the Wi-Fi association and NAT routing in software, and the carrier board's USB host port can attach a Z-Wave or Zigbee dongle for legacy device support. OnionOS includes avahi/mDNS, Mosquitto MQTT, and Python 3 out of the box, so a developer can spin up a working hub within an afternoon. Quiescent current sits near 150 mA, low enough for always-on operation.
Được đề xuất
Retrofit Industrial Telemetry
The OM-O2P-EVAL's small footprint (49 mm x 35 mm carrier) and on-board 802.11 n radio are well suited for retrofit industrial telemetry nodes that ride on top of existing equipment. Engineers can wire the GPIO/UART headers to a PLC or 4-20 mA sensor and push readings to a central SCADA gateway over MQTT. Per the MT7688 datasheet, the chip supports WPA2-Enterprise and 802.1X, which lets the node authenticate against industrial Wi-Fi infrastructure. The 580 MHz MIPS core is fast enough for Modbus TCP polling at sub-second rates, and the eval board's 0-70 C operating range covers most indoor industrial environments.
Được đề xuất
Classroom IoT Education Platform
For STEM classrooms and university IoT courses, the OM-O2P-EVAL is one of the cheapest Linux + Wi-Fi eval kits available, with a sub-$50 retail price and direct support for Python, JavaScript, and C tutorials. According to Onion's learning portal, students can flash the Omega2+ firmware, join a campus Wi-Fi network, and complete an MQTT publish-and-subscribe lab within a single 90-minute session. The breadboard-friendly headers and clearly labeled GPIO map reduce setup friction, and the eval board's Micro-USB power input works with standard phone chargers available in any classroom.
Được đề xuất
Proof-of-Concept Connected Product
When validating a connected-product idea, the OM-O2P-EVAL lets a hardware team demonstrate functionality within days instead of months. Because the bundled Omega2+ module is pre-certified for FCC, IC, and CE in the 2.4 GHz band, prototype demos can be performed in any geography without re-running radio compliance testing. Per the Onion design guide, the eval board's pin map exactly matches the Omega2+ SoM, so firmware developed on the kit can be carried over to a custom carrier with no software rework. The eval board also exposes USB host, making it easy to attach a camera or flash drive for media-centric prototypes.
Được đề xuất
Low-Cost Wireless Gateway for Sub-GHz Sensors
The OM-O2P-EVAL pairs naturally with a sub-GHz radio daughterboard (such as an SX1276 LoRa module) attached via SPI, creating a LoRa-to-Wi-Fi gateway for long-range sensors. Per the MT7688 datasheet, the SPI peripheral supports up to 40 MHz clock, which is fast enough to keep up with LoRa packet rates at SF7-SF12. The eval board's Linux userland lets the engineer run a packet forwarder (e.g., the LoRaWAN basics-station) directly on the Omega2+ module. Power draw peaks around 400 mA during simultaneous Wi-Fi TX and LoRa RX, which is still well within a 5 V / 1 A USB budget.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho OM-O2P-EVAL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | OM-O2-EVAL | OM-O2P | OM-O2 |
|---|---|---|---|---|
| Brand | Onion Corporation | Onion Corporation | Onion Corporation | Onion Corporation |
| Package | Carrier PCB with 0.1" headers (breadboard-friendly) | Carrier PCB with 0.1" headers - same | Bare SoM (castellated) - headers not included | Bare SoM (castellated) - headers not included |
| Bundled Module | Omega2+ (OM-O2P) | Omega2 (OM-O2) | Omega2+ (OM-O2P) - bare | Omega2 (OM-O2) - bare |
| On-board RAM | 128 MB DDR2 | 64 MB DDR2 | 128 MB DDR2 | 64 MB DDR2 |
| On-board Flash | 32 MB | 16 MB | 32 MB | 16 MB |
| Wireless Standard | 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 | 802.11 b/g/n 2.4 GHz - same |
| Host SoC | MediaTek MT7688 (MIPS 24KEc 580 MHz) | MediaTek MT7688 - same | MediaTek MT7688 - same | MediaTek MT7688 - same |
| Form Factor | Eval board (breadboard-ready) | Eval board - same form factor | Bare SoM only | Bare SoM only |
Bảo phân biệt quan trọng
- Highest memory configuration in the Omega2 EVAL family (vsOM-O2-EVAL)
- Carrier board included for immediate breadboard use (vsOM-O2P (bare SoM))
- Pre-certified 2.4 GHz Wi-Fi 4 radio inherited from Omega2+ module (vsOM-O2 (bare SoM))
Ghi chú thiết kế
Estimated: supply the OM-O2P-EVAL with a regulated 5 V / 1 A Micro-USB source. Peak current draw during Wi-Fi TX is approximately 400 mA at 3.3 V (per Onion module datasheet), so a marginal 500 mA supply will brown-out under burst load. Do not back-feed 3.3 V through GPIO headers while USB is connected, as the onboard LDO is not designed to share rails with an external source. Add a 100 uF bulk capacitor on the 5 V rail if the host supply is long or noisy.
Keep the antenna area of the Omega2+ module clear of copper pours, ground planes, and tall components. Per the FCC filing for the Omega2+ module, the chip antenna needs a 10 mm keep-out around the antenna pad. If you migrate from the eval board to a custom carrier, replicate the antenna keep-out geometry verbatim, otherwise the radiated efficiency and regulatory compliance of the pre-certified module will be invalidated.
The OM-O2P-EVAL's GPIO pins are 3.3 V logic; connecting 5 V signals directly to any pin will damage the MT7688. Always use a level shifter (such as a TXS0108E or discrete MOSFET circuit) when interfacing with 5 V peripherals. Also note that GPIO 6 and GPIO 7 share the UART1 pins by default and require a device-tree overlay to repurpose; new users often lose serial debug access by accidentally reassigning these pins.
The OM-O2P-EVAL is rated for 0 C to +70 C operation and does not require a heatsink. Estimated: at 25 C ambient, the MT7688 dissipates roughly 0.7 W during continuous Wi-Fi activity, producing a small (~10 C) rise above ambient that is well within the thermal envelope. For sealed enclosures without airflow, monitor the SoC temperature via /sys/class/thermal/ and throttle Wi-Fi duty cycle if temperatures exceed 60 C.
Thông tin tuân thủ
RoHS compliant and lead-free per Onion product page. REACH, halogen-free, and conflict-minerals declarations are not explicitly published for the EVAL variant; the Omega2+ module inherits FCC/IC/CE radio certification from the MediaTek MT7688 filings. AEC-Q100 is not applicable for a commercial-grade development board.