ET-S41
MAX-M10S Multi-GNSS Receiver
GPS, Galileo, BeiDou and GLONASS with backup battery
AED 89.00
Out of stockOverview
GPS, Galileo, BeiDou and GLONASS with backup battery
The ET-S41 is built around the u-blox MAX-M10S — 4 concurrent GNSS, −167dBm, internal LNA + SAW, ~1.5m CEP, up to 10Hz (25mW tracking). It connects over I²C (DDC) 0x42 via Qwiic and UART on the header (both level-shifted; 1PPS output + LED) and is powered from VIN 3.3–5.5V, onboard 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
- Drone and rover navigation
- Asset tracking
- Accurate time from GPS (1PPS)
Key features
What makes it different
Module
u-blox MAX-M10S: 4 concurrent GNSS, −167dBm, internal LNA + SAW, ~1.5m CEP, up to 10Hz (25mW tracking)
Interface
I2C (DDC) 0x42 via Qwiic and UART on the header, both level-shifted; 1PPS output + LED
Antenna
u.FL: passive patch or active antenna (bias via JP3)
Backup
CR1220 holder on V_BCKP → hot start in ~1s
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
| Module | u-blox MAX-M10S: 4 concurrent GNSS, −167dBm, internal LNA + SAW, ~1.5m CEP, up to 10Hz (25mW tracking) |
|---|---|
| Interface | I2C (DDC) 0x42 via Qwiic and UART on the header, both level-shifted; 1PPS output + LED |
| Antenna | u.FL: passive patch or active antenna (bias via JP3) |
| Backup | CR1220 holder on V_BCKP → hot start in ~1s |
| Supply | VIN 3.3–5.5V, onboard LDO |
| Size | 38.1 × 25.4 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 8-pin 2.54 mm header · U.FL receptacle 50Ω — Antenna |
| Main IC | MAX-M10S-00B (LCSC C4153167) |
| Revision | Rev B |
| Libraries | SparkFun u-blox GNSS v3 (Arduino), Adafruit_GPS (NMEA), gpsd on Pi, ESPHome gps |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
| JP3 (default Open) | Close for ACTIVE antennas (feeds 3.3V bias via L1/R6). Leave open for passive patch antennas |
Performance
Time to first fix
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 | TX | UART | NMEA/UBX out, host level, 9600 default |
| 7 | RX | UART | into module, host level |
| 8 | PPS | Output | 1 pulse/s, host level |
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-S41 MAX-M10S Multi-GNSS Receiver (assembled)
- 1 × 8-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: SparkFun u-blox GNSS v3 (Arduino), Adafruit_GPS (NMEA), gpsd on Pi, ESPHome
gps - Run an I²C scanner to confirm the address: 0x42
Compare
Which navigation board?
| MAX-M10S Multi-GNSS Receiver (this board)This board | ET-S42 ZED-F9P RTK GNSS | ET-S43 SDP810 Airspeed Sensor | |
|---|---|---|---|
| What it does | GPS, Galileo, BeiDou and GLONASS with backup battery | Multi-band RTK GNSS, centimetre-level | Differential-pressure airspeed sensor with pitot kit |
| Interface | I²C (DDC) 0x42 via Qwiic and UART on the header,… | — | I²C 0x25 |
| Best for | Drone and rover navigation | RTK drones and rovers | Fixed-wing drone airspeed |
| Price | 89 AED | 829 AED | 89 AED |
Downloads
Documents and design files
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