BLE function For Indoor and Outdoor Positioning¶

Description¶

ThinkNode-M3 Meshtastic Tracker - High-precision Positioning Device¶

The ThinkNode-M3 Meshtastic tracker is a high-performance device designed specifically for Meshtastic users. Integrating the LR1110, nRF52840, and GPS modules, it provides a high-precision, low-power positioning and communication solution. Its lightweight design makes it easy to carry and install, ensuring accurate location tracking whether worn on the body, mounted on a vehicle, or discreetly placed anywhere.

The Meshtastic Tracker can be linked to the Meshtastic app on your phone, enabling communication and positioning even in environments without cell phone signals or network coverage. It's perfect for outdoor activities like hiking, camping, or emergency rescue.

The ThinkNode-M3 LoRaWAN Tracker uses a magnetic charging design, sends a message once a minute, and can work for up to 18 hours. It also monitors ambient temperature, humidity, and movement. A one-touch alert function allows for quick distress signals in emeThe message is sent once every minute and can work for up to 18 hours. rgencies. The IP66 rating ensures durability and reliability in a variety of harsh environments, making it an ideal choice for outdoor adventures and emergencies.

For customized requirements (based on MOQ), please contact us at service@elecrow.com.

Model ILO13903D

Hardware Overview¶

Specification¶

Main control IC	nRF52840
LoRa Chip	LR1110
LORA Frequency	EU868/US915
Sensitivity requirement	-140 dBm or above
Maximum transmission power	+20 dBm
Transmission rate range	1.76~62.5Kbps
LoRa frequency range	860MHz-960MHz
Communication distance	5~6 kilometers
Bluetooth	Bluetooth 5.0
GNSS Location	Support GPS/GLONASS/GALILEO/BDS
GNSS Sensitivity	-148dbm (cold start) -156dbm (hot start)-160dbm (recapture) -162dbm (tracking)
GNSS Positioning accuracy	<1.5m（CEP50）
Sensors	Temperature Sensor, humidity Sensor, accelerometer
Indicator	One Red/Green/Blue three-color indicator light
Button	Power On/Off/SOS Trigger
Battery Capacity	760mAh, lithium battery
IP Rating	IP66
Operating temperature	-20℃-+60℃
Charging method	Magnetic charging
Antenna	Internal onboard antenna (GNSS/LORA/WIFI/BLE)
Power Supply	5V DC
Size	L/W/H: 646410 (mm)Fixed Base: 686810.2 (mm)
Material	PC+ABS
Certificate	CE / FCC
Net Weight	40g

Usage¶

Button Function Guide:¶

Press and hold for 3 seconds to power on. Upon startup, the red indicator light illuminates for 5 seconds while the buzzer sounds for 2 seconds before stopping. After 3 seconds, the blue light flashes continuously, indicating readiness for connection (searching for Bluetooth).
Press and hold for 5 seconds to enter sleep mode. The red light flashes rapidly for 3 seconds while the buzzer sounds for 3 seconds.
Press and hold continuously for 10 seconds to reset, forcing the device to restart.

USB Instructions:¶

Enter programming mode by holding the reset button for 20 seconds. The computer will display an ‘ELECROWBOOT drive’; select the firmware to be programmed and drag it into the drive.
Hold the reset button for 10 seconds to exit programming mode, then press it for 3 seconds to power on the device.
Should the device become bricked, connect it to a computer via USB to restart it.

Before use, please ensure the firmware has been downloaded. (The corresponding firmware is also provided prior to shipment.)¶

Burning Firmware¶

ClickMeshtastic firmware

1,Select the corresponding firmware.

2, follow the steps to download the firmware.

M3 firmware will be released shortly.¶

example 1:¶

The following outlines the procedure for transmitting signals to the designated relay point.¶

How to obtain the app:

1: Visit the Google Play Store (https://play.google.com/), search for ‘meshtastic’, locate the app, and download it for installation.

2: Visit the official Meshtastic website (https://meshtastic.org/downloads/) and download the software.

Before use, press and hold the power button for three seconds to switch on:

Prepare two mobile phones with Meshtastic APP installed and two thinknode M5\M1\M2 devices.

Android App Usage GuideiOS App Usage Guide

Android App(Version 2.6.30)¶

First go to the app store to download and install the Meshtastic APP

Meshtastic APP Usage:¶

Same settings on the receiving side as on the transmitting side¶

After opening the application, tap ‘Scan’ and select the corresponding Meshtastic device to connect.

When the Meshtastic_xxxx device is searched, tap to enter pairing mode.

Enter this code(123456) on your cell phone(The default code for the ThinkNode M6 is 123456.).

Set LoRa frequency: Tap the settings icon, select ‘Radio Configuration’, then tap the ‘LoRa’ option. Scroll down to the “Add” column and enter the required value in the ‘Coverage Frequency (MHz)’ field corresponding to the desired frequency.

If two devices want to communicate, they need to join to the same channel, this time you need to select the fourth of the five options above, the other end of the phone needs to join to the same channel by scanning the code or entering the link, the channel can be customized name and so on.¶

After joining, the two devices can now chat in the first screen by selecting Group Chat.

iOS App：¶

Same settings on the receiving side as on the transmitting side¶

1)Open the app, tap Bluetooth on the home page and see the device you want to connect. Click on Pairing.

The default code for the ThinkNode M6 is 123456.

2)When the Meshtastic_xxxx device is searched, tap to enter pairing mode.

3)After successful Bluetooth pairing, You need to go to Settings and click on Lora Settings.

4) Set lora Region. and then scroll down to set the frequency. consistent with the previous settings for the region. Finally, check ignore MQTT and save.

5)Go to the information page, select a channel and a QR code will appear, use another device to scan this QR code to enter.

6)Join and start sending or receiving messages.

Video effect demonstration:（coming song）¶

How to buy¶

Please visit this page to purchase ThinkNode M3 Meshtastic Tracker.

Support¶

If you have any problem about how to use it, you can connect to us at the bottom-right of bazzer or contact to techsupport@elecrow.com to get technology support.