Unified image
Pocket sensor powered over USB.
Good for
- The most portable Linux sensor
- Walking surveys with a phone
Hardware
| Part | Detail |
|---|---|
| Processor | Raspberry Pi Compute Module 4 |
| Memory | 1 GB stock; 8 GB on an upgraded CM4 |
| Storage | eMMC: 8 GB stock, 32 GB on an upgraded CM4. Check the release notes for the minimum the current image needs |
| Wi-Fi card link | PCIe 2.0 ×1 at 5 GT/s, measured. The BE200 itself reports a 16 GT/s (PCIe 4.0) capability; the CM4 sets the speed |
| USB | USB-C OTG at USB 2.0 High-Speed (480 Mb/s), measured. The CM4 has no USB 3 |
| Wi-Fi | Intel BE200 with antennas inside the case |
| Wired | None; USB-C carries power and management |
| Power | About 1.5 W idle and 2 W while scanning (WLAN Pi figures). Use a supply or adapter that can deliver it |
What you can buy
- Compute module: Stock: CM4 with 1 GB and 8 GB eMMC. Upgradable to any CM4 (up to 8 GB memory, 32 GB eMMC). Our upgraded Go has 8 GB and 32 GB. More eMMC holds longer Save on Remote captures; more memory rides out longer bursts once buffering ships.
- Storage: eMMC only. Fixed by the compute module; write speed not measured.
Radios
| Card | Measured |
|---|---|
| Intel BE200 | 320 MHz on 6 GHz in monitor mode: tunes on this board’s Gen2 link. No network was sending on the channel we tried, so no 802.11 frames were recorded here; the same card captured 320 MHz frames on a NanoPi. The WLAN Commander app offers up to 160 MHz today |
Limits
- USB 2.0 (480 Mb/s) is the only way data leaves the Go, so a full-payload stream is capped there.
- One radio, and no Ethernet.
- Undervoltage has been seen behind an unpowered USB hub.
Measured
- One-hour capture: no drops.
- Held in the hand beside a NanoPi with external antennas: level on 5 and 6 GHz, 3.6 dB quieter on 2.4 GHz, and it counted more access points (82 against 77).
Install
Put the Go into its flash mode to expose its eMMC to the computer, then write the factory image to that eMMC. It has no Ethernet port: USB supplies management and power, so use a stable supply or an adequately powered data adapter.
Then follow the unified image setup guide: claim the sensor with its one-time code, and connect from the app or the device website.