This header is a two-row socket, with each row the inverse of the other. This
configuration allows the sensor module to be plugged in from either the TOP or
BOTTOM of the PCB. On the assembled SumoBot WX, the Ping))) Ultrasonic sensor fits
best under the board, whereas the LaserPING fits well on the top.
You must only connect one PING module to the socket, either in
the TOP or BOTTOM position. You must never connect to both sides
(or socket rows) at the same time!
3) Piezospeaker
The piezospeaker is connected to P20; drive with frequency-out signals in the 300 to
5000 Hz range.
4) Mounting Holes
The four plated mounting holes are positioned to attach the SumoBot WX Board to the
robot chassis included in the SumoBot WX Competition Kit.
5) UART Switch
The UART slide switch allows the user to change which Propeller I/O pins are connected
to the WiFi Module socket's TX/RX serial I/O pins.
With the switch in the top position, pins P30 and P31 are connected to the WiFi module
serial pins, which allows for wireless programming of the Propeller on the FLiP module.
With the switch in the bottom, pins P24 and P25 are connected to the WiFi module,
which is useful for transmitting serial data in certain situations, such as when the
Propeller is being programmed by a USB connection that would interfere with data on
P30 and P31.
Another common use for the SER2 connection is when using the FLiP to program the
WiFi module network settings.
Switch position
FLiP pin
Radio module pin
PROG (31/30)
P31 (Propeller FLiP RX)
TX (DO)
P30 (Propeller FLiP TX)
RX (DI)
SER2 (25/24)
P25 (Propeller FLiP RX)
TX (DO)
P24 (Propeller FLiP TX)
RX (DI)
Copyright © Parallax Inc.
SumoBot WX Board (#32132)
v1.1 8/17/2020 Page 3 of 9