| .. | ||
| ATMEGA | ||
| stm32 | ||
| README.md | ||
Documentation
This directory contains the documentation of MoleNet. For the previous versions, please refer to the ATMEGA or stm32 directory, respectively.
The Hardware
MoleNet 6.1 with all available components assembled. Click on the image for a high resolution version.
Available Components
- LoRa (SX1276) via Ra-01H module
- BME280
- SD-card holder
- qwiic for external I2C components
- LEDs
- SDI-12 for environmental sensors
- Additional pins (analog and digital)
Components and their Connections
MoleNet contains various different on-board parts. The following tables lists the connections and other relevant information for the major parts. For further details, refer to schematics of the board. The table lists the part of the board revision 6.3.
| Part | Part Number | Description | Pins |
|---|---|---|---|
| SW1 | SKHHARA010 | Reset button (enable) for ESP32 | EN |
| SW2 | SKHHARA010 | Boot mode button for ESP32 | GPIO0 |
| U1 | ESP32-S3-WROOM-1-N16 | ESP32-S3 | |
| U3 | TLV76133DCYR | Voltage regulator 3V3 | |
| U5 | Ra-01H | LoRa Module (SX1276) | RESET=GPIO15, NSS=GPIO48, MOSI=GPIO47, MISO=GPIO21, SCK=GPIO14, DIO0=GPIO46 |
| U7 | BME280 | Sensor for humidity, barometric pressure and ambient temperature | I2C, SCL=GPIO8, SDA=GPIO9, address=0x76 |
| D6 | NCD0805R1 | User LED | GPIO38 |
| D7 | NCD0805R1 | User LED | GPIO2 |
| D8 | NCD0805R1 | Power LED | Power |
| J1 | Enable SD-card via jumpers | Power=GPIO7 (optional), MOSI=GPIO11, MISO=GPIO13, SCK=GPIO12, CS=GPIO10 | |
| J2 | Enable BME280 connection via jumpers | ||
| J3 | Power out | GND, 3V3, Vin | |
| J4 | Enable LEDs via jumpers | ||
| J5 | Enable LoRa via jumpers | ||
| J6 | USB connector | ||
| J7 | Power in | ||
| J8 | Misc. pins (ADC etc.) | ||
| J9 | Unused GPIOs | ||
| J10 | SDI-12 connector | Uses the following GPIOs: Power=GPIO1, SDI_RX_ENABLE=GPIO36, SDI_RX=GPIO18, SDI_TX_ENABLE=GPIO35, SDI_TX=GPIO17, SDI_MARKING=GPIO37 | |
| J11 | Remaining DIOs from LoRa transceiver | ||
| J12 | Power connector for energy measurements of the entire board. Connect via jumper | ||
| J13 | Micro SD card holder | ||
| J14 | SMA-KWE902 | SMA connector for LoRa | |
| J15 | qwiic connector for I2C devices | SCL=GPIO8, SDA=GPIO9 (shared with BME280) | |
| J16 | Power SDI-12 interface via jumper. Alternative: switch using GPIO1 | ||
| J17 | Jumper for ESP32 power supply. Used to measure only the power consumption of the ESP. Connect via jumper. |
Pins on the ESP32
For the usage of the pins, please refer to the hardware section in this document or the schematics of the corresponding versions available in the PCB-Layouts directory.
Setup using Arduino
- Install Arduino IDE -> arduino.cc
- Install the esp32 package by Espressif via the Boards Manager in the IDE
- Select the ESP32S3 Dev Module as the board
- Select the corresponding USB port
- Set USB CDC On Boot: Enabled
- Set USB Mode: USB-OTG (Tiny USB)
⚠️ Attention: Different ports!
Different ports are created at various times when the MoleNet platform is connected to the computer. One port is to flash the firmware, while the second is to access the MoleNet Platform’s serial port. The first is the default after a reset. The second is usually entered if the boot button is pressed during reset or when powering up the board.
Usually, you have to setup the board twice according to the settings above. Be aware that the port identifier can change depending on your operating system.
Setup using MicroPython
Please use the documentation for the ESP32 available at micropython.org.