Using a smartphone in conjunction with an endoscopic camera turns your gadget into a powerful diagnostic tool. Owners of Xiaomi equipment often purchase inexpensive wired or wireless models to conduct visual inspection of hard-to-reach places, this can be checking the condition of the car’s engine, searching for items under furniture or diagnosing pipes in the bathroom.
However, despite the simplicity of the design, the pairing process can raise questions for beginners. The Android system on which MIUI runs requires certain permissions and sometimes manual adjustments to correctly display the video stream. In this article, we will discuss all the nuances of connection, choosing the right software and solving typical problems.
The success of the operation depends largely on the type of connection you use. USB-The cameras require standard support OTG, While Wi-Fi models work over a local network, understanding these differences can help avoid wasting time and nerves when you first start a device.
Compatibility check and equipment preparation
Before you try to connect an endoscope, you need to make sure that your smartphone is technically capable of transmitting an image, and the key is that you can support OTG (On-The-Go) without this technology, the phone can't feed power to the camera and read data from it.
Most modern Xiaomi models, from the Redmi Note series to the Mi flagships, support this standard. However, on budget or very old devices, the feature can be software disabled by the manufacturer, and you can check for support through specialized applications or by examining the specification of the processor.
It is also important to prepare the camera itself. If you use a wired model, check the USB connector for oxidation. For wireless versions, make sure that the device battery is charged, as a weak charge can cause the connection to break during the diagnostic process.
- 🔌 Make sure the camera is equipped with an adapter. USB Type-C or Micro-USB, corresponding to your phone’s connector.
- 📱 Check in the phone settings, whether the debugging mode is activated by USB (Although this is rarely required for simple cameras, it sometimes helps).
- 🔋 Charge your smartphone to at least 40%, as the camera and screen quickly consume energy.
⚠️ Warning: Do not connect powerful endoscopes with long cable (more than 5 meters) directly without additional power if the phone starts to issue an error".
Selection and installation of software
The most common mistake users make is trying to use the standard application "Camera". Xiaomi endoscopes and compatible devices require specialized software that can decode the video stream in a format MJPEG or H.264. The camera manual usually contains QR-code APK-file.
If the paper manual is lost, you can use universal applications from the Google Play Market, the leaders in this niche are programs with names like "USB View", "CameraFi" or "OTG View". For Wi-Fi models, often use applications "HD WiFi" or "Max-ASee".
When installing the app, pay attention to the permissions requested. To work properly, the program requires access to storage (to save photos and videos) and access to the local network (for Wi-Fi cameras), without these permissions, the functionality will be reduced.
It is important to choose an app that has high marks and fresh reviews, as older versions may not work properly on Android 10-14 installed on the new Xiaomi.
Instructions: wired connection USB-camera
Connecting a wired endoscope is the most stable option, ensuring that the image is transmitted without delay. First, connect the camera to the adapter, and the adapter to the charging connector of the smartphone. USB-device.
If the sound doesn’t appear, check the OTG in the settings. In some versions of MIUI, you need to manually activate Settings → Additional Features → OTG. After activation, launch the previously installed application.
Inside the application, select the source of the signal. This is usually a button with a USB or OTG icon. If the drivers are installed correctly, the video stream will appear on the screen. Image quality can be adjusted in the application menu by changing the resolution to 1280×720 or 1920×1080.
☑️ Checklist of connection USB-camera
⚠️ Warning: If the phone shows a message"USB-"Device is not supported," try another adapter. Cheap cables are often unshielded and can't transmit data.
Setting up a wireless Wi-Fi endoscope
Wireless camera models create their own access point. Once the device is turned on (pressing the power button for 3-5 seconds), it will broadcast a Wi-Fi signal. The network name usually contains a brand name or model, for example, Wireless-IPCAM.
You need to connect to this network through your Xiaomi Wi-Fi settings. The default password is often listed on the camera case sticker and is usually 12345678 or 1234567890. Once connected, the phone's internet may go missing - that's okay, the phone switched to the camera's local network.
Launch the app and press the connection button. If the connection is established, you will see an image. To improve signal stability, try to keep the phone at a distance of no more than 5-7 meters from the camera.
What if your Wi-Fi camera isn’t on the list?
Comparison of Connection Types
The choice between wired and wireless depends on your tasks. The wired version is more reliable, but limits mobility. Wireless is convenient, but depends on battery power and interference in the air.
Below is a table that helps you decide on the type of connection for different use cases.
| Parameter | USB (Wired) | Wi-Fi (Wireless) | Bluetooth (Rarely) |
|---|---|---|---|
| Video delay | Minimum | Medium (0.5-2 sec) | Tall. |
| Range. | Cable length (2-10 m) | Up to 10 meters. | Up to 5 meters. |
| Nutrition | From the phone (OTG) | Built-in battery | Built-in battery |
| Stability | Tall. | Depends on the interference. | Low for video |
Resolving problems and errors
Often, users are faced with a situation where the phone sees the device as a drive, but not as a camera. This means that the standard Android driver worked. The application needs to manually switch USB mode from Charging or Transferring Files to USB Camera or OTG.
Another problem is the black screen in the app, which may be due to resolution incompatibility. Try changing the format of the video from YUYV to MJPEG in the app settings, which is less demanding on CPU resources and more widely supported by budget cameras.
If the image twitches or has a low frame rate, close the background apps on your smartphone. Xiaomi is known for its aggressive power saving system, which can limit the performance of the processor when working with external devices.
- 🔄 Reboot your phone with a connected camera – this often resets driver errors.
- 📉 Reduce the resolution in the app to 640×480 test.
- 🔌 Use a quality adapter, preferably original or certified.
⚠️ Note: Do not use an endoscope to inspect hot surfaces or inside working machinery unless the camera has an appropriate thermal protection class.
Operation and care tips
To extend the life of a flexible camera hose, avoid sharp inflections at 90 degrees. Inside the cable are thin wires that can burst when flexed frequently in one place. When stored, twist the cable with rings with a diameter of at least 10-15 cm.
The camera lens should be wiped with a soft microfiber after each use, especially if you have been inspected in dusty or oily environments.
If the camera has waterproofing, do not dive deeper than specified in the specification (usually IP67).
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Lubricate the flexible cable with silicone lubrication before inspecting the oil engines – this will make it easier to extract and clean the camera after work.