Build Guideintermediate
DIY Evil Crow RF V2 el Cheapo — Budget PCB Build from Scratch
Open-source custom PCB design for building an Evil Crow RF V2 clone from off-the-shelf parts including an ESP32 DevKit, two CC1101 modules, and a MicroSD card reader, with gerber files for PCB fabrication.
Boards:ESP32
Firmware:Arduino
Use Cases:Security & SurveillanceEducationIoT Prototyping
Overview
The Evil Crow RF V2 el Cheapo Version by knightr1d3r007 is a DIY PCB project that lets you build your own Evil Crow RF V2 from commonly available off-the-shelf components. It provides an affordable entry point into sub-GHz RF security research for those who want to build rather than buy.
Supported Frequency Bands
- 300-348 MHz
- 387-464 MHz
- 779-928 MHz
Required Components
- ESP32 DevKit V1 — 30-pin board with ESP-WROOM-32 chip
- 2x TI CC1101-v2 modules — 8-pin blue modules with circular holes
- MicroSD card module — 6-pin, headers must be reversed for back-of-PCB mounting
- 2x tactile buttons with 10k pull-up resistors
- On/off switch
- Pin headers, solder, flux, iron
- MicroSD card — up to 32GB
- 5V power source — battery pack or USB power bank
Build Notes
- The MicroSD module solders on the back of the PCB with pin order: CS, SCK, MOSI, MISO, VCC, GND
- Important: Powering via the ESP32's USB port will NOT power the CC1101 modules or SD card — use the dedicated 5V input
- PCB gerber files are available in the GitHub releases for ordering from PCB fabrication services (JLCPCB, PCBWay, etc.)
Firmware
The board runs the standard Evil Crow RF V2 firmware and is compatible with all alternative firmware projects (h-RAT custom firmware, HUN73R.0047, etc.).
License
MIT License — for educational purposes only.
