// ESP32 Field Units
HUNT EVERY
SIGNAL.
Field-ready touchscreen handhelds and cases that run open-source firmware like Pueo, Bruce and Marauder — plus the straight answers on which firmware, which radios, and how to flash them.
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THE ARSENAL
devices · firmware · guides01 — Devices
The Handhelds
The 3.5" CYD unit and printed cases — specs, the radios they carry, and what each build is for.
See the hardware →
02 — Firmware
Which One, Why
Pueo vs Bruce vs Marauder — radios, drone/camera detection, which board, and the honest trade-offs.
Compare firmware →
03 — Guides
Flash It, Wire It
Flashing recipes, CC1101/NRF24/PN532 wiring and power, antennas, and the CYD touch fix.
Coming soon →
Unit
Radios
Source
Pueo
wifi · ble · nrf24 · sub-ghz · rfid +drone
open
Bruce
wifi · ble · sub-ghz · rfid · ir
open
Marauder
wifi · ble +drone +cams
open
Authorized use only. Everything here is for equipment you own or have written permission to test. These tools scan, capture and transmit — using them against other people's gear is illegal in most places, and nothing on this site changes that.