// Devices

THE HANDHELDS.

Touchscreen ESP32 field units and the hardware around them. Built to run open firmware, carry real radios, and survive a pocket. Photos of finished units are on the way — specs are real.

3.5" CYD Field Unit

Core unit

A touchscreen ESP32 handheld on the ESP32-3248S035R board — the base every build starts from.

BoardESP32-3248S035R · dual-core 2.4GHz
Display3.5" ST7796 · 320×480 · resistive touch
Onboard radioWiFi + BLE
Add-on radiosCC1101 · NRF24 · PN532
StoragemicroSD
FirmwarePueo · Bruce · Marauder

CYD35 Case

In development

A printed enclosure for the 3.5" unit — two-part shell with antenna mounts and a module bay.

Fit3.5" CYD + RF modules
BuildFDM · parametric (ring + tray)
PortsAntenna mounts · USB · microSD
OutputSTEP · STL · 3MF
StatusActively designed

RF Hat

Planned

One expansion board that carries every radio, instead of flying-wire modules.

RadiosCC1101 · NRF24 · PN532
PowerDedicated 3.3V for PA modules
Mounts toCYD 3.5" breakout pins
StatusIn design (KiCad)

BUILT TO ORDER

Units are hand-built, not mass-produced. A proper order and contact flow is coming — in the meantime, the specs above are current and the firmware comparison is one tap away.

Authorized use only. These are tools for security testing on equipment you own or are permitted to test.