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ESP Drone Transmitter Controller Specification
Architecture
ESP32-based DIY drone transmitter/controller with a 0.96 in SSD1306 I2C OLED display, two analog joysticks, NRF24L01+PA+LNA 2.4 GHz RF link, optional MPU-6050 IMU, USB-C programming/power, CH340C USB-UART bridge, 2S LiPo battery input, charging/power-management, 3.3 V logic rail, status LEDs, buzzer, and user buttons.
Reference requirements
  • Board size: 140 x 80 mm
  • Stackup: 4-layer PCB
  • MCU: ESP32, 240 MHz class module
  • Display: 0.96 in OLED 128 x 64, SSD1306 I2C
  • RF link: NRF24L01+ PA+LNA 2.4 GHz module, target range about 1 km
  • Battery: 2S LiPo, 7.4 V nominal, 8.4 V full
  • Power input: USB 5 V and 2S LiPo battery input
  • Logic voltage: 3.3 V
  • Control channels: 8 total, 4 ADC joystick axes plus 4 switch channels
  • Target update rate: 250 Hz packet rate
Design choices
  • Use ESP32-WROOM module rather than bare ESP32 for beginner-friendly RF reliability.
  • Use 4-layer PCB for better RF, ground return, power integrity, and routing margin.
  • Use I2C for OLED and optional IMU with shared 4.7 kΩ pull-ups.
  • Use SPI for NRF24L01+ radio.
  • Use named nets for all functional interfaces to keep the schematic readable.

    Architecture

    Reference requirements

    Design choices

Documents

    ESP Drone Transmitter Controller Specification

    DRC Remediation Log

Assets

Assets are files uploaded to this project which can be used in various ways.

ESP Drone Transmitter Controller thumbnail
ESP32-based DIY drone transmitter/controller with OLED display, dual joysticks, NRF24L01+PA+LNA radio, USB-C/2S LiPo power, charging, controls, indicators, and external interfaces.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$56.09–$56.51

Digi-Key

$16.44–$17.20

HQonline

$5.15–$5.24

LCSC

$45.12–$45.39

Mouser

$19.39

TME

$1.01

Verical

$0.81–$1.04

Controls