DroneBridge enabled firmware for the popular ESP32 modules form Espressif Systems. Probably the cheapest way to communicate with your drone.

• Bi-directional link: MAVLink, MSP & LTM
• Very low price: ~7€
• Up to 150m range
• Weight: <10 g
• Supported by: DroneBridge for Android (app), mwptools, QGroundcontrol, etc.
• Easy to set up: Power connection + UART connection to flight controller
• Fully configurable through easy to use web interface
• Parsing of LTM & MSPv2 for more reliable connection and less packet loss
• Fully transparent telemetry downlink option for continuous streams like MAVLink or and other protocol
• Reliable, low latency, light weight
• Upload mission etc.

Tested with: DOIT ESP32 module

1. Download latest release from this repository or check out db_esp32\releases folder.
2. Get the latest Flash Download Tools from Espressif
3. Settings - bootloader.bin 0x1000 - partitions_singleapp.bin 0x8000 - dronebridge_esp32.bin 0x10000
4. During flasing you might need to hold the "boot" button for 2-3 seconds because some drivers have issues with the process.
5. If you dont get it check out google or this link

TODO

Connect UART of ESP32 to a 3.3V UART of your flight controller. Set the flight controller port to the desired protocol. (Power the ESP32 module with a stable 5-12V power source) Check out manufacturer datasheet! Only some modules can take more than 3.3V/5V on VIN PIN

1. Connect to the wifi DroneBridge ESP32 with password dronebridge
2. In your browser type: dronebridge.local (Chrome: http://dronebridge.local) or 192.168.2.1 into the address bar
3. Configure as you please and hit save

Configuration Options:

• **Wifi password: Up to 64 character long
• **UART baud rate: Same as you configured on your flight controller
• **GPIO TX PIN Number & GPIO RX PIN Number: The pins you want to use for TX & RX (UART). See pin out of manufacturer of your ESP32 device Flight controller UART must be 3.3V or use an inverter.
• UART serial protocol: MultiWii based or MAVLink based - configures the parser
• Transparent packet size: Only used with 'serial protocol' set to transparent. Length of UDP packets
• LTM frames per packet: Buffer the specified number of packets and send them at once in one packet
• MSP & LTM to same port: Split MSP & LTM stream or send both to same port. Set to Yes if you want to use mwptools. Set to No if you use DroneBridge software (app etc.)

** Require restart/reset of ESP32 module

Use the Android app to display live telemetry data. Mission planning capabilities for MAVLink and MSP will follow.

You will need the Espressif SDK: esp-idf + toolchain. Check out their website for more info and on how to set it up. The code is written in pure C using the esp-idf (no arduino libs).

Compile and flash by running: make, make flash