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I have a sensor from a Propel Star Wars drone that I can't identify. The metal part of the sensor is marked with "A6103 040". I have tried various libraries and sensors, including BME280, BMP280, BMP388, BME680, MPU6050, MS5611, HTU21D, LPS22HB, and MS8607, but none have worked. Does anyone have an idea what sensor this could be, or has experience with similar sensors used in Propel drones?

The sensor has an I2C address of 0x76 and shows the following register values:

| Register | Value  |
|----------|--------|
| 0x00     | 0xCA   |
| 0x01     | 0x4E   |
| 0x02     | 0xA4   |
| 0x03     | 0x21   |
| 0x04     | 0xD0   |
| 0x05     | 0xBC   |
| 0x06     | 0x03   |
| 0x07     | 0x83   |
| 0x08     | 0xC7   |
| 0x09     | 0x00   |
| 0x0A     | 0x00   |
| 0x0B     | 0x00   |
| 0x0C     | 0x00   |
| 0x0D     | 0x10   |
| 0x0E     | 0x00   |
| 0x0F     | 0x00   |
| 0x10     | 0x0D   |
| 0x11     | 0x0E   |
| 0x12     | 0xFA   |
| 0x13     | 0x12   |
| 0x14     | 0xDE   |
| 0x15     | 0xBF   |
| 0x16     | 0x36   |
| 0x17     | 0x35   |
| 0x18     | 0xF4   |
| 0x19     | 0xFB   |
| 0x1A     | 0x04   |
| 0x1B     | 0x3E   |
| 0x1C     | 0xDF   |
| 0x1D     | 0xEB   |
| 0x1E     | 0x00   |
| 0x1F     | 0x3C   |
| 0x20     | 0xFC   |
| 0x21     | 0x2B   |
| 0x22     | 0x00   |
| 0x24     | 0x20   |
| 0x25     | 0x57   |
| 0x26     | 0x62   |
| 0x27     | 0xA6   |
| 0x28     | 0x32   |
| 0x29     | 0x00   |
| 0x2A     | 0x00   |
| 0x2B     | 0x00   |
| 0x2C     | 0x00   |
| 0x2D     | 0x00   |
| 0x2E     | 0x00   |
| 0x2F     | 0x00   |
| 0x30     | 0x61   |
| 0x31     | 0x14   |
| 0x32     | 0x02   |
| 0x33     | 0x66   |
| 0x34     | 0x97   |
| 0x35     | 0x0D   |
| 0x36     | 0x00   |

Here are some photos of the sensor and the board: enter image description here enter image description here

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    \$\begingroup\$ Thinking about the sensors a drone might have, maybe it's an accelerometer. Do the values change if you change the orientation of the device? \$\endgroup\$
    – Andrew Morton
    Commented Jul 19 at 17:32
  • \$\begingroup\$ Hey Andrew, yes the values changes but I recently found out: It is an Altimeter SPL06-001. Thank you \$\endgroup\$
    – Halit Efk
    Commented Jul 19 at 18:29
  • \$\begingroup\$ Strictly speaking, it is not an Altimeter, it is a pressure sensor used as an Altimeter. \$\endgroup\$
    – hcheung
    Commented Jul 19 at 23:55

1 Answer 1

Reset to default
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Might be a pressure sensor like the Goertek SPL06-001. It's probably used to measure the altitude of the drone.

It uses the I²C address 0x76 if the SDO pin is pulled to ground according to the datasheet.

enter image description here

enter image description here

(Source: lcsc.com)

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  • \$\begingroup\$ Hi Nanash1, I wanted to thank you for your invaluable assistance in identifying the sensor from my Propel Star Wars drone. With this information, I was able to proceed with the correct setup and implementation. 20:22:58.391 -> Measured Air Pressure: 979.22 mb 20:22:58.391 -> Local Airport Sea Level Pressure: 1011.30 mb 20:22:58.391 -> altitude: 271.1 m 20:22:58.391 -> altitude: 889.4 ft Your help has been much appreciated, and I’m grateful for your guidance. How could you identify it really quickly? It is impressing! \$\endgroup\$
    – Halit Efk
    Commented Jul 19 at 18:25
  • \$\begingroup\$ I won't speak for @nanash1 who obviously is skilled in recognising components, but the shape of the can of the sensor is very much typical of a mems pressure sensor or microphone (same same but different). So the type is not too tough to guess. Then I would say its a matter of knowing where to search for what and make some educated guesses and finally check datasheets \$\endgroup\$
    – MrGerber
    Commented Jul 19 at 20:50

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