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docs/hardware/devices/heltec-automation/lora32/peripherals.mdx
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@ -25,7 +25,7 @@ values={[
This guide outlines the process of enhancing the Heltec ESP32 V3 board by integrating a GT-U7 GPS Module, although almost any supported GNSS module can be integrated in the same way. The addition of this module provides precise GPS capabilities and a real-time clock (RTC), eliminating the need for WiFi or a smartphone for time tracking. This enhancement is particularly beneficial for the mesh, where tracking the duration since the last seen device is crucial.
However, it's important to note that the GPS module increases the power demand of your node. We'll address this by detailing how to incorporate a switch or an N-channel MOSFET into your setup. This enables firmware-controlled power management, conserving battery life without sacrificing functionality.
However, it's important to note that the GPS module increases the power demand of the node. This guide helps to address this by detailing how to incorporate a switch or an N-channel MOSFET into the setup. This enables additional firmware-controlled power management, conserving more battery life than the soft-sleep option without sacrificing functionality.
### Benefits
@ -58,12 +58,12 @@ The current version of the guide now instructs using either a surface mount or t
Note: these instructions assume a 2N7000 MOSFET is used. For other parts, always check the data sheet!
1. Solder a wire from the TXD pin on the GPS module to GPIO 48 on Heltec board. (You may choose your own GPIO pin)
2. Solder a wire from the RXD pin on the GPS module to GPIO 47 on Heltec board. (You may choose your own GPIO pin)
1. Solder a wire from the TXD pin on the GPS module to GPIO 48 on Heltec board. (Another GPIO pin may be chosen)
2. Solder a wire from the RXD pin on the GPS module to GPIO 47 on Heltec board. (Another GPIO pin may be chosen)
3. Solder a wire from the VCC pin on the GPS module to 3V/5V pin pin on Heltec board.
4. Solder a wire from Right leg (lead 3, Drain) of NPN MOSFET to GND on GPS module.
5. Solder a wire from Left leg (lead 1, Source) of NPN MOSFET to GND on Heltec board.
6. Solder a wire from Middle leg (lead 2, Gate) of NPN MOSFET to GPIO 48 of Heltec board. (You may choose your own GPIO pin)
6. Solder a wire from Middle leg (lead 2, Gate) of NPN MOSFET to GPIO 48 of Heltec board. (Another GPIO pin may be chosen)
7. Go to Meshtastic app > Radio Configurations > Position
8. Set GPS_RX_PIN to 48 (This will communicate to the TXD pin on the GPS)
9. Set GPS_TX_PIN to 47 (This will communicate to the RXD pin on the GPS)
@ -71,14 +71,14 @@ Note: these instructions assume a 2N7000 MOSFET is used. For other parts, always
### Wiring Diagram - Through-Hole
![HeltecESP32V3-gps-module](/img/hardware/Heltec_ESP32V3_GPS_module_low-side.png)
![HeltecESP32V3-gps-module](/img/hardware/heltec/Heltec_ESP32V3_GPS_module_low-side.webp)
### Instructions (Surface Mount MOSFET)
Note: these instructions assume an SI2312 MOSFET is used. For other parts, always check the data sheet!
1. Solder a wire from the TXD pin on the GPS module to GPIO 48 on Heltec board. (You may choose your own GPIO pin)
2. Solder a wire from the RXD pin on the GPS module to GPIO 47 on Heltec board. (You may choose your own GPIO pin)
1. Solder a wire from the TXD pin on the GPS module to GPIO 48 on Heltec board. (Another GPIO pin may be chosen)
2. Solder a wire from the RXD pin on the GPS module to GPIO 47 on Heltec board. (Another GPIO pin may be chosen)
3. Solder a wire from the GND pin on the GPS module to middle pin of the SI 2312 MOSFET
4. Solder a wire from the VCC pin of the GPS module to o 3V/5V pin on Heltec board.
5. Solder a wire from Left leg of SI2312 MOSFET to GPIO 46 on the Heltec board.
@ -91,11 +91,11 @@ Note: these instructions assume an SI2312 MOSFET is used. For other parts, alway
### Photographs and Diagrams - SMD
![HeltecESP32V3-gps-module](/img/hardware/Heltec_ESP32V3_SMDMosfetDiagram.png)
![HeltecESP32V3-gps-module](/img/hardware/heltec/Heltec_ESP32V3_SMDMosfetDiagram.webp)
![HeltecESP32V3-gps-module](/img/hardware/Heltec_ESP32V3_SMDMosfetInPlace.jpg)
![HeltecESP32V3-gps-module](/img/hardware/heltec/Heltec_ESP32V3_SMDMosfetInPlace.webp)
![HeltecESP32V3-gps-module](/img/hardware/Heltec_ESP32V3_SMDMOSFET_GPSInPlace.png)
![HeltecESP32V3-gps-module](/img/hardware/heltec/Heltec_ESP32V3_SMDMOSFET_GPSInPlace.webp)
### Troubleshooting Tips
@ -107,21 +107,7 @@ If the location is not accurate, walk around to allow the GPS to properly lock o
### Conclusion
By following this guide, you can enhance your Heltec ESP32 V3 board with valuable GPS capabilities and an RTC, while effectively managing power consumption. Whether for a hobby project or a more serious application, these additions significantly expand the potential of your device.
By following this guide, the Heltec ESP32 V3 board can be enhanced with valuable GPS capabilities and an RTC, while effectively managing power consumption. Whether for a hobby project or a more serious application, these additions significantly expand the potential of the device.
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<TabItem value="Keyboard">
## Keyboard
Coming Soon
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<TabItem value="Buzzer">
## Buzzer
Coming Soon
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