Models
The following MEGA UniShield models are available:
MODEL
INTERFACE
Wi-Fi Antenna
UU-1-EW
ESP32 Development Board
Internal
UU-1-EX
ESP32 Development Board
External
Product Notes
The ESP32 UniShield will accommodate any compatible ESP32 Development Board. The
interface is mounted in a header pair (2 row @ 1000 mil x 19 pins @ 100 mil) on the Riser board
and can be replaced or upgraded if needed.
ESP32 UniShields with internal Wi-Fi antenna interfaces should be mounted in plastic
enclosures to ensure adequate signal strength and communication externally. If mounting in a
metal enclosure, external antenna model should be used.
Note: For UniShields with Wi-FI shields and external antennas, never power the UniShield
or connect its Interface Microcontroller to USB without first connecting the external antenna
cable and antenna to the shields uFL connector.
Base Board
The ESP32 UniShield Base board has two banks of I/O terminals. Each bank is powered by one
pair of power terminals: VA or VB. VA is the blue screw terminal pair at the bottom of the board
and VB is the pair at the top (both screws in each terminal). Banks are arranged as follows, with
position determined when the printed text is oriented upright (readable) on the Base board:
BANK / POWER TERMINAL
TERMINAL NUMBERS
(oriented by printed text)
VA
1, 2, 3 (bottom row)
VB
4, 5, 6 (top row)