¶ Order Yours Today
| Store | URL | Description |
|---|---|---|
| Tindie | tindie.com | Our Official Store on Tindie |
| Official Store | shop.uniteng.com | Our Official Store, Secure Payments By PayPal, Volume Discount Available |
¶ Overview
The Nano Series devices are engineered to be a portable and durable solution for outdoor adventures such as hiking, piloting, skiing and more. They are designed to strike a balance between RF performance, size, ruggedness, and power efficiency, providing users with a reliable solution in various outdoor environments.
The Core Advantage of Nano Series
The Nano Series' Lora Antenna offers superior performance in various environments, including near the human body, due to its special design that minimize signal degradation and maintain efficient communication. In contrast, most other antennas currently available experience significant performance degradation when placed near the human body, as evidenced by a marked shift in resonant frequency and a substantial increase in VSWR, making them less suitable for wearable wireless devices. More Technical Information
For the firmware, all Nano Series devices come with pre-installed Meshtastic. More detials could be found in the The Latest Firmware section.
Meshtastic Frequency Bands Supported by Nano G2 Ultra[1]:
US (902.0Mhz to 928.0Mhz), EU_868 (869.4Mhz to 869.65Mhz), JP (920.8Mhz to 927.8Mhz), ANZ (915.0Mhz to 928.0Mhz), RU (868.7Mhz to 869.2Mhz), KR (920.0Mhz to 923.0Mhz), TW (920.0Mhz to 925.0Mhz), IN (865.0Mhz to 867.0Mhz), NZ_865 (864.0Mhz to 868.0Mhz), TH (920.0Mhz to 925.0Mhz), UA_868 (868.0Mhz to 868.6Mhz).
The primary design goal of the Meshtastic[2] Mesh Device Nano G2 Ultra is to reduce power consumption and improve battery life by using the low power MCU NRF52840 and optimizing the power relatived designs. The typical battery life is optimized to be about 5 days. Nano G2 Ultra and Nano G1 Explorer have exactly the same Lora front-end circuit design and internal wideband Lora antenna, which supports frequencies from 815 Mhz to 940 Mhz. The wideband antenna, combined with an optimized wideband Lora RF frontend circuit, enables the Nano G2 Ultra to work with the majority of regions' LoRa frequency bands around the world without the need for antenna changes. The design of the Nano G2 Ultra also takes into account the potential effect of the human body on its antenna performance, ensuring optimal RF performance even when carried in a pocket.
¶ Power Consumption and Features Comparison of Nano G2 Ultra and Nano G1 Explorer
| Editions | Nano G2 Ultra | Nano G1 Explorer |
|---|---|---|
| Core Research Areas | Low Power Design | Human Body Near Antenna (HBN) Wideband High Radiation Efficiency Planar Antenna and RF Front-end Design |
| Photo | |
 |
| Product Status | ACTIVE | ACTIVE |
| Current Hardware Version | 22 Sep 2023 | 06 Mar 2023 |
| Lora RF Max Output Power | Up to 22 dBm | Up to 22 dBm |
| LoRa Transceiver | SX1262 | SX1262 |
| Lora Operation Frequency | Wideband from 815 Mhz to 940 Mhz | Wideband from 815 Mhz to 940 Mhz |
| MCU | NRF52840 | ESP32 |
| WIFI | - | YES |
| Bluetooth | v5.4 | v4.2 |
| Satellite Navigation | GPS, BDS | GPS, BDS |
| Real-Time Clock (RTC) | NXP PCF8563 | - |
| USB Connector | Type C | Type C |
| Screen | 1.3 Inch OLED Screen | 1.3 Inch OLED Screen |
| Battery | Optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery | Optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery |
| Power Input Socket | USB Type C, JST 1.25mm Connector for Rechargeable Li-Polymer Battery | USB Type C, JST 1.25mm Connector for Rechargeable Li-Polymer Battery |
| LoRa Antenna | Build In Wideband PCB Antenna | Build In Wideband PCB Antenna |
| Accessories | Build In 10 Pin FPC Connector (0.5mm Pitch, 1x I2C, 6x GPIO, VCC3V3 and GND) Optional I2C Extension Board (1x GROVE I2C Socket and 1x SparkFun QWIIC I2C Socket for Sensors and Keyboard) |
- |
| Typical Average Power Consumption | 14.24 mA @ 4.3V (Lora TX Power = 22 dBm, GPS OFF, Screen OFF, Two Nodes in Network) | 70.50 mA @ 4.3V (Lora TX Power = 22 dBm, GPS Low Power Mode, Screen OFF, Two Nodes in Network) |
| Typical Scenarios | Hiking, Pilot, Skiing, Work with the majority of regions' LoRa frequency bands around the world without the need for Antenna changes. The typical battery life is optimized to be about 5 days (For Hardware Version 22 Sep 2023 or Later) | Hiking, Pilot, Skiing, Work with the majority of regions' LoRa frequency bands around the world without the need for Antenna changes. The typical battery life is optimized to be about 16 Hours. |
In general, Nano G2 Ultra is not designed to replace Nano G1 Explorer, Nano G2 Ultra focuses on low power, and Nano G1 Explorer supports WIFI.
¶ Characteristics
| Item | Description |
|---|---|
| Lora Operation Frequency | 815 Mhz to 940 Mhz |
| Lora Max RF Output Power | 22 dBm |
| VSWR of Lora PCB Antenna | < =1.5 @ 915 MHz and 868Mhz |
| Gain of Lora PCB Antenna | 2.0 dBi, Omni-directional |
| Impedance Bandwidth of Lora PCB Antenna | 815 Mhz to 940 Mhz for VSWR < = 2 |
| Polarization of Lora PCB Antenna | Linear |
| High-Precision Frequency Reference for Lora | 32MHz TCXO (+-1.5 ppm) |
| Positioning And Navigation Module | Build-in GPS Module, LNA and Omni-directional Antenna. GPS and BDS are supported |
| VSWR of GPS PCB Antenna | < =2 @ 1575.42 MHz, GPS L1 Band |
| Impedance Bandwidth of GPS PCB Antenna | 1474 Mhz to 1590 Mhz for VSWR <= 2 |
| Item | Description | Note |
|---|---|---|
| MAX Charging Current | 485 mA | |
| Typical Charging Time | 3 Hours | From 0% to 100%, 3.7V 1200mAh 603450 JST 1.25 Rechargeable Li-Polymer Battery |
| Typical Battery Life | 5 Days | 1200mAh Li-Polymer Battery, Two Nodes in Network, Channel Options: Long Rang Fast, GPS set to OFF |
| Item | Description |
|---|---|
| Size | 10cm x 5.8cm x 2.5cm |
| Color | Black |
| Weight | ~123g, optional 3.7V 1200mAh 603450 JST 1.25mm Rechargeable Li-Polymer Battery installed |
¶ Hardware
¶ Switch/Button Definition
| Icon | Type | Name | Description |
|---|---|---|---|
| Button | Program Button | Single press changes the page of information displayed on the screen. Double press sends a broadcast message of the device position. |
|
| Button | Message Read Button | Single press clears New Message LED | |
| Switch | GPS ON/OFF Switch | Toggle the switch up turns on the GPS Toggle the switch down turns off the GPS |
|
| Switch | LED or Buzzer Switch | Toggle the switch up selects Buzzer for Enhanced Message Notification Circuit Toggle the switch down selects LED for Enhanced Message Notification Circuit |
|
| Switch | Power ON/OFF Switch | Toggle the switch up turns on the device Toggle the switch down turns off the device |
¶ Schematics
| Product | Download | Version |
|---|---|---|
| Schematics for Nano G2 Ultra | nano_g2_ultra_19_jun_2023.pdf | Version: 19 Jun 2023 |
¶ PCB
- Power ON/OFF Switch
- LED or Buzzer Switch for Enhanced Message Notification Circuit
- GPS ON/OFF Switch
- Message Read Button - Clear New Message LED
- User Button
- Internal Bluetooth Antenna
- Real-Time Clock (RTC), Part No. NXP PCF8563
- 10 Pin FPC Connector (0.5mm Pitch, 1x I2C, 6x GPIO, VCC3V3 and GND)
- Enhanced Message Notification Circuit and New Message LED Indicator
- Buck-boost converter, > 95% efficiency, Texas Instruments(TI) TPS63051
- Quad SPI 16Mbit Flash
- nRF52840 - Multiprotocol Bluetooth 5.4 SoC
- 32MHz TCXO (+-1.5 ppm), Part No. DSB211SDN from DAISHINKU CORP. (KDS)
- RF Switch
- USB Type C Socket
- Battery Charging LED Indicator （Red）
- Battery Standby LED Indicator (Green)
- Reset Button for nRF52840
- Semtech SX1262 Lora Transceiver
- FPC Connector for OLED Screen
- Serial Wire Debug (SWD) Port for nRF52840
- JST 1.25mm Connector for optional 3.7V 603450 Rechargeable Li-Polymer Battery
- Active Buzzer
- ATGM336H-5N Whole Constellation Positioning and Navigation Module
- Internal Wideband Lora Antenna
- GPS Pulse Per Second (PPS) LED Indicator, the PPS LED is functional if and only if the board is powered by the external power. (Improving the battery life)
- GPS Omni-directional Antenna
- 1.3 Inch OLED Screen
¶ Power Status
| Battery Charging LED Indicator (Red) | Battery Standby LED Indicator (Green) | Description |
|---|---|---|
| ON | OFF | Battery is being charged |
| OFF | ON | Battery is full charged |
| OFF | OFF | USB Type C is disconnected or Reverse Battery Protection |
| BLINKING | ON | Powered by USB Type C and No battery installed |
Whether powered through USB Type-C or the Internal Li-Polymer Battery, the New Message LED Indicator will automatically activate upon system startup, until the user deactivates it using the Message Read Button. This indicator serves not only as a notification for new messages but also as a way to confirm that the built-in battery is functioning properly.
¶ Mechanical Design
Similar as Nano G1 Explorer, the Nano G2 Ultra is also constructed by stacking up PCB boards.This method offers a good balance of cost and mechanical strength. An optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery could be installed.
Note: Blue Rectangle - Nylon Machine Screws and Nuts
| Item | Quantity |
|---|---|
| M3x12mm Screws | 2 |
| M3x20mm Screws | 4 |
| M3 Nuts | 6 |
¶ Power Consumption Measurement
Power Consumption Measurement will recently be updated to hardware version: 22 Sep 2023.
¶ Instrument Setup
To test the power consumption when powered by battery, connect the Micro Power Analyzer to the Nano G2 Ultra's (Hardware Version: 19 Jun 2023) JST 1.25mm Connector for optional 3.7V 603450 Rechargeable Li-Polymer Battery. The power supply voltage is set to 4.3V.
The following items will be measured:
- Average Power Consumption
- Power Consumption when GPS OFF
a. Lora TX mode, GPS OFF, Screen OFF
b. Lora RX mode, GPS OFF, Screen OFF
c. Lora RX mode, GPS OFF, Screen ON - Power Consumption when GPS ON
e. Lora TX mode, GPS ON, Screen OFF
f. Lora RX mode, GPS ON, Screen OFF
¶ Measurements
- Average Power Consumption
Average Power Consumption = 14.24 mA @ 4.3V, Measurement Duration: 13 minutes and 32 seconds, Lora TX Power = 22 dBm, GPS OFF, Screen OFF, Two Nodes in Network
According to the figure above, Meshtastic Firmware sometimes enters the sleep mode to further reduce power consumption. With the continuous optimization of the firmware, it can be expected that the sleep time will be longer and the power consumption will be further reduced. - Power Consumption when GPS OFF
a. Lora TX mode, Lora TX Power = 22 dBm, GPS OFF, Screen OFF = 138.85 mA @ 4.3V
b. Lora RX mode, GPS OFF, Screen OFF = 14.43 mA @ 4.3V
c. Lora RX mode, GPS OFF, Screen ON = 20.80 mA @ 4.3V
From the above data, we know that the power consumption of the screen is about c - b = 20.80 mA - 14.43 mA = 6.37 mA @ 4.3V - Power Consumption when GPS ON
e. Lora TX mode, Lora TX Power = 22 dBm, GPS ON, Screen OFF = 156.93 mA @ 4.3V
f. Lora RX mode, GPS ON, Screen OFF = 36.63 mA @ 4.3V
From the above data, we know that the power consumption of the GPS is about f - b = 36.63 mA - 14.43 mA = 22.2 mA @ 4.3V
The working mode of the GPS module is complicated, and the power consumption will be different in different modes. For example, when the Almanac and Ephemeris data expires, the Almanac and Ephemeris data need to be downloaded from the satellites, the power consumption of the GPS module will increase, and the positioning time will also increase.
¶ Summary for Power Consumption Measurement
| Item | Measured Value | Note |
|---|---|---|
| Average Power Consumption | 14.24 mA @ 4.3V | Measurement Duration: 13 minutes and 32 seconds, Lora TX Power = 22 dBm, GPS OFF, Screen OFF, Two Nodes in Network |
| Power Consumption when GPS OFF | a. Lora TX mode, Lora TX Power = 22 dBm, GPS OFF, Screen OFF = 138.85 mA @ 4.3V b. Lora RX mode, GPS OFF, Screen OFF = 14.43 mA @ 4.3V c. Lora RX mode, GPS OFF, Screen ON = 20.80 mA @ 4.3V |
1.3 Inch OLED Screen Power Consumption is about c - b = 20.80 mA - 14.43 mA = 6.37 mA @ 4.3V |
| Power Consumption when GPS ON | e. Lora TX mode, Lora TX Power = 22 dBm, GPS ON, Screen OFF = 156.93 mA @ 4.3V f. Lora RX mode, GPS ON, Screen OFF = 36.63 mA @ 4.3V |
GPS Power Consumption is about f - b = 36.63 mA - 14.43 mA = 22.2 mA @ 4.3V |
¶ RF Design - Lora
Nano G2 Ultra and Nano G1 Explorer have exactly the same Lora front-end circuit design and internal wideband Lora antenna. For detailed test information, please refer to the WIKI page of Nano G1 Explorer.
¶ Summary for Conduction Test
| TX Setting | Lora Region | Measured Output Power |
|---|---|---|
| 22 dBm | Region = “US” | 23 dBm |
| 22 dBm | Region = “EU868” | 22.5 dBm |
¶ Summary for Antenna Measurement
¶ Standard Measurement
| Item | Measured Value |
|---|---|
| VSWR @ 915 MHz | 1.4297 |
| VSWR @ 868 MHz | 1.4573 |
| Impedance Bandwidth | 815 Mhz to 940 Mhz for VSWR <= 2 |
¶ Human Body Near Antenna (HBN)
What is the Human Body Near Antenna (HBN) Problem
| Item | Measured Value |
|---|---|
| VSWR @ 915 MHz | 1.757 |
| VSWR @ 868 MHz | 1.936 |
¶ RF Design - GPS
Nano G2 Ultra and Nano G1 Explorer have exactly the same GPS front-end circuit design and internal GPS antenna. For detailed test information, please refer to the WIKI page of Nano G1 Explorer.
¶ Summary for GPS Antenna Measurement
| Item | Measured Value |
|---|---|
| VSWR @ 1575.42 MHz, GPS L1 Band | 1.605 |
| Impedance Bandwidth | 1474 Mhz to 1590 Mhz for VSWR <= 2 (Efficiency>=90%) |
¶ Notification Circuit
¶ Enabling ext_notification_plugin
You will be alerted by either Active Buzzer or New Message LED when receiving an incoming message.
Execute following command by using Meshtastic CLI:
meshtastic --set external_notification.enabled true --set external_notification.alert_message true --set external_notification.output_ms 100 --set external_notification.active true
Output:
Connected to radio
Set external_notification.enabled to true
Set external_notification.alert_message to true
Set external_notification.output_ms to 100
Set external_notification.active to true
Writing modified preferences to device
Re-power the device, the incoming new message will result in 100ms alert or turn on New Message LED corresponding to the selection of "LED or Buzzer Switch".
More details: https://meshtastic.org/docs/settings/moduleconfig/external-notification
- Open the Meshtastic App
- Navigate to: Vertical Ellipsis (3 dots top right) > Radio configuration > External Notification
Re-power the device, the incoming new message will result in 100ms alert or turn on New Message LED corresponding to the selection of "LED or Buzzer Switch".
More details: https://meshtastic.org/docs/settings/moduleconfig/external-notification
¶ Internal Li-Polymer Battery Charger
Community-Verified Compatible Batteries
These batteries have been verified by the user community for compatibility with the Nano G2 Ultra and are sold by third-party sellers. We have not tested the quality of the batteries, so we cannot make any guarantee for the quality of the batteries.
More Information
The Nano G2 Ultra includes an Internal Li-Polymer Battery Charger, and an optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery can be installed. The built-in battery is expected to come with a protection board to prevent over-discharge. To install the battery, you need to remove the nylon nuts located within the four green rectangles and take off the battery cover.
¶ Specifications
| Item | Description | Note |
|---|---|---|
| MAX Charging Current | 485 mA | |
| Typical Charging Time | 3 Hours | From 0% to 100%, 3.7V 1200mAh 603450 JST 1.25 Rechargeable Li-Polymer Battery |
| Typical Battery Life | 5 Days | 1200mAh Li-Polymer Battery, Two Nodes in Network, Channel Options: Long Rang Fast, GPS set to OFF |
¶ The Latest Firmware
Meshtastic Mesh Device Nano G2 Ultra had been supported by the official meshtastic repository on Github starting from Pull Request #2660 and Meshtastic Firmware 2.1.21.97.
Firmware file: firmware-nano-g2-ultra-2.x.x.xxx.uf2
¶ Drag & Drop nRF52 Firmware Updates
Before entering bootloader mode, please Toggle the LED or Buzzer Switch () down to select LED for Enhanced Message Notification Circuit. Otherwise, the buzzer will make noise because the bootloader will set all GPIOs to input mode.
Download and unzip the latest firmware from Meshtastic Downloads.
- Connect your device to your computer with a USB data cable.
- Double click the Reset Button on your device (this will put it into bootloader mode)
Remove the nylon nuts located within the four green rectangles and take off the battery cover. Reset Button (Yellow Rectangle) is under the battery, please use a ballpoint pen or SIM Needle to click the Reset Button. - Notice a new drive will be mounted on your computer (Windows, Mac, or Linux)
- Open this drive and you should see three files: CURRENT.UF2, INDEX.HTM, and INFO_UF2.TXT
- Drop the appropriate firmware file (firmware-nano-g2-ultra-2.x.x.xxx.uf2) from the release onto this drive.
Once the file has finished copying onto the drive, the device will reboot and install the Meshtastic firmware.
Previous versions of the Meshtastic firmware may save stale data, causing devices to get stuck in a crash loop during startup. If you experience issues when upgrading your nRF52 device from a previous version of Meshtastic, you may need to perform a full factory reset of the internal flash memory.
Follow the guide to factory erase your nRF52 device before continuing to flash firmware.
More Information: https://meshtastic.org/docs/getting-started/flashing-firmware/nrf52/drag-n-drop
¶ Bootloader
Bootloader and Meshtastic firmware are pre-installed, if there is no special reason, you don’t need to install the bootloader yourself.
If you are a developer, you need to use DAPLink or J-Link to install the bootloader through Serial Wire Debug (SWD) Port for nRF52840 .
| Version | Date | Download | Description |
|---|---|---|---|
| 0.6.4 | 25-Jul-2023 | nano_g2_nrf52840_bootloader-0.6.4_s140_6.1.1.hex.zip | Bootloader for Nano G2 Ultra |
¶ Software
¶ Android
The Android APP could be downloaded and installed from the Google Play Store: https://play.google.com/store/apps/details?id=com.geeksville.mesh
APP Source Code: https://github.com/meshtastic/Meshtastic-Android/releases
¶ iOS
The iOS APP could be downloaded and installed from following URL: https://meshtastic.org/docs/category/apple-apps
¶ Python / MQTT and More
Python, Web Interface and MQTT are also supported by the Meshtastic. More information: https://meshtastic.org/docs/software
¶ Advanced Topics
¶ Accessories
GPIO access is fundamentally dangerous because invalid options can physically damage or destroy your hardware. Ensure that you fully understand the schematic for your particular device before trying this.
Nano G2 Ultra has a 10 Pin FPC Connector (0.5mm Pitch), this Connector contains an I2C interface, 6 GPIO, VCC (3.3VDC) and GND. This connector can be used to support accessory designs.
¶ Optional I2C Extension Board
The I2C Extension Board has two I2C sockets, which are used to connect GROVE[3], Adafruit STEMMA QT[4] and SparkFun QWIIC[5] devices. These two I2C sockets are based on the 10 Pin FPC Connector of Nano G2 Ultra.
¶ Meshtastic supported I2C devices
¶ Telemetry Module
Supported sensors connected to the I2C bus of the device will be automatically detected at startup. Environment Telemetry and Air Quality must be enabled for them to be instrumented and their readings sent over the mesh.
| Sensor | I2C Address | Data Points |
|---|---|---|
| BMP280 | 0x76, 0x77 | Temperature and barometric pressure |
| BME280 | 0x76, 0x77 | Temperature, barometric pressure and humidity |
| BME680 | 0x76, 0x77 | Temperature, barometric pressure, humidity and air resistance |
| MCP9808 | 0x18 | Temperature |
| INA260 | 0x40, 0x41 | Current and Voltage |
| INA219 | 0x40, 0x41 | Current and Voltage |
| LPS22 | 0x5D, 0x5c | Barometric pressure |
| SHTC3 | 0x70 | Temperature and humidity |
| SHT31 | 0x44 | Temperature and humidity |
| PMSA003I | 0x12 | Concentration units by size and particle counts by size |
More Information: https://meshtastic.org/docs/settings/moduleconfig/telemetry
¶ Canned Message Module
Canned Message Module, I2C Extension Board and M5Stack CardKB[6] can turn Nano G2 Ultra into a stand-alone device, which can send and receive messages without a mobile phone.
- M5Stack CardKB
The CardKB is fully supported in freetext mode and select mode. Use UP/DOWN/ENTER to select a predefined message and send it. For a freetext message, just type it in and press ENTER to send it.
If you don't want to broadcast your freetext message, you can use the CardKB to send it to a specific node. Just press TAB and select the target node with the LEFT/RIGHT keys. The message will be sent to the node with the matching name and node number. The target node will be remembered for your next message.
More Information: https://meshtastic.org/docs/settings/moduleconfig/canned-message#cardkb
¶ Installation Instructions
Nano G2 Ultra and I2C Extension Board are connected by 10 Pin FPC Connectors (0.5mm Pitch, Front Flip-Lock Actuator) and a 10cm FPC cable. The figure below explains in detail about how to operate the FPC Connector.
- To install the I2C expansion board, you need to remove the nylon nuts located inside the six green rectangles, then remove the six boards until you can see the green main board.
Before removing the sixth board, disconnect the battery. Be sure to disconnect the battery and USB cable to ensure the following operations will not damage the device.
-
Use a 10cm FPC cable to connect the 10 Pin FPC Connector (FPC2) on the green motherboard. Pass through the hole in the yellow rectangle and the four boards in the red rectangle in Step 1. Finally, connect the 10cm FPC cable to the 10 Pin FPC Connector (FPC1) on the I2C Extension Board. When connecting the 10cm FPC cable to connect the 10 Pin FPC Connector, always keep the blue plastic piece on the 10cm FPC cable facing towards you.
-
Install the Optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery. Then install the I2C expansion board on top of the battery. The 10cm FPC cable can be placed on the top of the battery. The FPC cable allows 180-degree bending. The battery cover that comes with the device is not needed in this configuration, please keep it properly.
¶ Battery Life Related Settings
According to the Power Consumption Measurement, the settings related to battery life are mainly related to ATGM336H-5N Whole Constellation Positioning and Navigation Module (GPS) and 1.3 Inch OLED Screen.
- Typical power consumption for GPS is about 22.2 mA @ 4.3V
- Typical power consumption of 1.3 Inch OLED Screen is about 6.37 mA @ 4.3V
For GPS, you can increase the GPS Update Interval to further reduce power consumption.
More Information about GPS Update Interval: https://meshtastic.org/docs/settings/config/position
For 1.3 Inch OLED Screen, you can decrease the Screen On Duration (display.screen_on_secs) to further reduce power consumption.
More Information about Screen On Duration (display.screen_on_secs): https://meshtastic.org/docs/settings/config/display
¶ Real World Testing
¶ Datasheet
| Part No. | Datasheet | Description |
|---|---|---|
| ATGM336H-5N | atgm336h-5n.pdf | High performance whole constellation positioning and navigation module |
| DSB211SDN | dsa_dsbxxxsdn_en.pdf | 32.000MHz TCXO (+-1.5 ppm) |
| TI TPS63051 | tps63051.pdf | Buck-Boost Converter |
¶ Reference
RegionInfo. Retrieved Feb 20, 2023, from https://github.com/meshtastic/firmware/blob/afc75b25529590253c513f19e4b6f6f0ef94bf95/src/mesh/RadioInterface.cpp ↩︎
Meshtastic Project. Retrieved Feb 13, 2023, from https://meshtastic.org ↩︎
Grove I2C. Retrieved Jul 23, 2023, from https://wiki.seeedstudio.com/Grove_System/#grove-i2c ↩︎
Adafruit STEMMA QT. Retrieved Jul 24, 2023, from https://learn.adafruit.com/introducing-adafruit-stemma-qt/what-is-stemma-qt ↩︎
Qwiic Connect System. Retrieved Jul 23, 2023, from https://www.sparkfun.com/qwiic ↩︎
CardKB Mini Keyboard Programmable Unit V1.1 (MEGA8A). Retrieved Jul 23, 2023, from https://shop.m5stack.com/products/cardkb-mini-keyboard-programmable-unit-v1-1-mega8a ↩︎