ET-S64
QMC5883L Compass
3-axis magnetometer for heading, ±8 gauss, Qwiic
AED 9.00
Out of stockOverview
3-axis magnetometer for heading, ±8 gauss, Qwiic
The ET-S64 is built around the QST QMC5883L — ±2/±8 gauss, 16-bit, 1–2° heading accuracy. It connects over I²C fixed 0x0D and is powered from VIN 3.3–5.5V, LDO.
Two Qwiic / STEMMA QT connectors let you chain it with other boards without soldering, and the 2.54 mm header fits a breadboard.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Robot and boat heading
- Digital compasses
- Magnet detection
Key features
What makes it different
Sensor
QST QMC5883L: ±2/±8 gauss, 16-bit, 1–2° heading accuracy
Interface
I2C fixed 0x0D
Supply
VIN 3.3–5.5V, LDO
Libraries
QMC5883LCompass, ESPHome qmc5883l
Qwiic / STEMMA QT
Two JST-SH connectors plus a 2.54 mm header — 3.3 V and 5 V hosts.
Open documentation
Schematic, BOM and layout notes published for every board.
Specifications
Technical specifications
| Sensor | QST QMC5883L: ±2/±8 gauss, 16-bit, 1–2° heading accuracy |
|---|---|
| Interface | I2C fixed 0x0D |
| Supply | VIN 3.3–5.5V, LDO |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 6-pin 2.54 mm header |
| Main IC | QMC5883L (LCSC C976032) |
| Revision | Rev A |
| Libraries | QMC5883LCompass, ESPHome qmc5883l |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
Performance
Range
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5.5V |
| 2 | 3V3 | Power | LDO output |
| 3 | GND | Ground | Ground |
| 4 | SCL | I²C | I²C clock |
| 5 | SDA | I²C | I²C data |
| 6 | DRDY | Output | Data-ready (3.3V) |
Qwiic / STEMMA QT pins: GND, VIN, SDA, SCL (same on both connectors). I²C pull-ups (10 kΩ) are on the board; cut JP2 to remove them.
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S64 QMC5883L Compass (assembled)
- 1 × 6-pin 2.54 mm male header, unsoldered
Getting started
- Plug in a Qwiic / STEMMA QT cable, or solder the header and wire VIN, GND, SDA and SCL
- Libraries: QMC5883LCompass, ESPHome
qmc5883l - Run an I²C scanner to confirm the address: 0x0D
Compare
Which motion or compass sensor?
| QMC5883L Compass (this board)This board | ET-S63 MPU-6500 6-DoF IMU | ET-S26 LSM6DSOX 6-DoF IMU | ET-S28 MMC5983MA 18-bit Magnetometer | |
|---|---|---|---|---|
| What it does | 3-axis magnetometer for heading, ±8 gauss, Qwiic | Accelerometer + gyroscope with MPU-6050-style registers, Qwiic | Accelerometer + gyro with machine-learning core | Precision 3-axis compass for drones and robots |
| Interface | I²C fixed 0x0D | I²C 0x69 / 0x68 (JP3), register-compatible with… | I²C 0x6A / 0x6B (JP3), INT1/INT2 | I²C fixed 0x30, INT |
| Best for | Robot and boat heading | Self-balancing robots | Activity and gesture recognition | Drone and rover compass |
| Price | 9 AED | 39 AED | 39 AED | 49 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.