DroneBridge for ESP32

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

Features

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, impload 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

Setup

Flashing the firmware using the precompiled binarys

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

Wiring

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

Configuration

Connect to the wifi DroneBridge ESP32 with password dronebridge
In your browser type: dronebridge.local (Chrome: http://dronebridge.local) or 192.168.2.1 into the address bar
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 with DroneBridge for Android

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

Compile yourselfe (developers)

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

jemo07/ESP32_STM32Wifi