Hobbywing HW LINK APP Data Log Guide
Clicking on the "Data Log" option on the HW LINK APP homepage presents two primary modes: "Peak Record" and "Data Record". These features allow users to monitor and analyze the performance of their Hobbywing Electronic Speed Controllers (ESCs).
Peak Record [01]
Peak Record refers to the maximum and minimum values recorded during the ESC's last operation. This includes data such as Maximum ESC/Motor temperature, Minimum battery voltage, Maximum motor RPM, and Maximum current.
The specific data items available in Peak Record vary between surface (car/boat) and aerial (airplane) ESCs. Users must select the appropriate option based on their ESC model:
- 1.1. Surface: Select this option for ESCs used in car or boat models (e.g., XERUN, SEAKING V4 series).
- 1.2. Aerial Models: Select this option for ESCs used in airplane models (e.g., Platinum series).
Peak Record Data Example (Surface)
Below is an example of data displayed in the Peak Record interface for a surface ESC:
| No. | Max. ESC Temp | Max. Motor Temp | Min. Battery Volt | Max. Motor RPM | Max. Current | Firmware Version |
|---|---|---|---|---|---|---|
| 1 | 28.0°C/82.4°F | 0.0°C/32.0°F | 7.4V | 15221RPM | 2.8A | XR-3.1.04 |
| 2 | 24.0°C/75.2°F | 0.0°C/32.0°F | 7.4V | 16570RPM | 1.8A | SK-5.0.06 |
Data Record [02]
Selecting "Data Record" navigates to the viewing page for "Real-time Data" and "Data Log (Historical Data)".
Real-time Data
Real-time Data displays information during active operation. Due to the typical Bluetooth range limitation (around 5 meters), this feature is best suited for close-range testing, such as on a bench or desktop.
Settings for Real-time Data
In the "Settings" menu, users can configure parameters essential for accurate speed calculations:
- Gear Ratio (Final Drive Ratio, FDR): Input the vehicle's gear ratio.
- Motor Pole: Specify the number of poles in the motor.
- Tire Diameter: Enter the diameter of the tires in millimeters.
- Speed Unit: Select the desired unit for speed display (e.g., km/h).
After these settings are applied, the real-time data interface will show accurate speed readings. Note that these "Settings" only affect the real-time data display and are not linked to the historical data in the Data Log.
Example Settings Interface: The interface allows adjustment of Gear Ratio (0.01-100.00), Motor Pole (2-100, even numbers), Wheel Size (10-1000 mm), and Unit selection (km/h).
RPM/Speed Toggle
Users can toggle between displaying RPM and Speed. RPM represents the electrical RPM of the motor. For accurate mechanical speed, the correct motor pole count must be set. Speed is calculated based on the user's input settings.
Data Log (Historical Data)
This section displays historical operational data in a graphical format.
Data Log Sources
Users can choose the source for their data logs:
- From OTA Module/Bluetooth Switch: This method uses an OTA Bluetooth module or an integrated Bluetooth switch on the ESC to record data during operation. Many Hobbywing ESCs utilize this, including models like the XERUN XR8 Pro G3 (OTA module), XERUN XR10 Pro G2S (OTA module), EZRUN MAX6 G2 (Bluetooth switch), and EZRUN MAX5 HV Plus G2 (Bluetooth switch).
- From ESC: Data is recorded directly within the ESC itself. This method does not require an OTA module during running (it's connected only for data viewing post-operation) and lacks a Bluetooth switch. This is less common, with the XERUN XR10 Pro G3/G3X being a primary example.
- From File: This refers to locally stored data files. After viewing a data log, a local file is typically saved for future reference.
Note on RPM Conversion: The RPM displayed in the Data Log is electrical RPM for a 2-pole motor. To get the actual mechanical speed, adjust based on the motor's pole count:
Formula: Mechanical RPM = Displayed RPM / (Motor Pole / 2)
For a 4-pole motor, divide by 2. For a 6-pole motor, divide by 3.
Graph Data Explanation [03]
The historical data is presented as a graph with the following axes:
- Horizontal Axis: Represents time, measured in minutes, seconds, and milliseconds.
- Vertical Axis: Represents various recorded data items, such as RPM, throttle (%), input voltage (V), operating current (A), ESC temperature (°C/°F), and motor temperature (°C/°F).
Different colors are used to represent different data items. For instance, a red curve might indicate operating current (0-126A range, peak 126A), and a green curve might show ESC temperature (26-71°C range, peak 71°C).
The data values displayed in the top row correspond to the data at the point indicated by an orange vertical line. For example, values at approximately 1 minute and 49 seconds might show: 39910 RPM, 100% throttle, 15.0V input voltage, 100.2A current, and 56°C/132.8°F ESC temperature.
Users can interact with the graph using the touchscreen to zoom and pan the timeline. A "[reset-view-icon]" (four-arrow icon) in the upper right corner resets the view to its original state.
A "[toggle-display-icon]" (pink icon) in the upper left corner allows switching between RPM and Speed display. Accurate speed display requires correct motor pole, gear ratio, and tire diameter settings in the ESC parameters. This feature is typically found on ESCs like the XERUN XR10 Pro G3/G3X; the icon will not appear if the ESC lacks this capability.
Important Note: The availability of specific data items depends on the ESC's capabilities. For example, sensorless ESCs or motors may not provide motor temperature data, and some ESCs might omit current data. Always verify based on your specific ESC model.
