■ SCREENSHOT 2. This message was transmitted by our
VEmesh Node in Standard mode. The zero in the “alert
message” indicates the state of the VEmesh Node’s toggle
switch array. Looks like somebody didn’t run this through
the old spell checker.
zero, and repowering the Node.
After powering up the Node in Standard mode, the
VEmesh Node and Gateway activity LEDs resume their
synchronous blinking cycles. Recall that the Gateway and
Nodes in the network exchange data using predetermined
timing. The blinking of the nodes’ indicator LEDs is
representative of the synchronized data exchanges. The
idea behind the Data Burst
Pushbutton is to demonstrate how a
node can break the data exchange
sequence and send its message
immediately. The Data Burst
Pushbutton evaluation mode worked
as designed as you can see in
Screenshot 2. The zero preceding
the colon in the canned message
reflects the setting of the toggle
The VEmesh technology was
initially designed with remote utility
meter reading and wireless sensor
applications in mind. However, I can
envision a sensor or group of sensors
tethered to a microcontroller whose
UART is tied to a VEmesh Node’s RS-
232 interface. Another thought that
comes to mind is the incorporation
of a microcontroller’s analog-to-digital
output into a VEmesh data message.
Yet another good application of this
wireless network is an alarm system
in which monitor nodes can be
added at will.
I’m sure you have some practical
uses for a VEmesh wireless network.
After all, it’s now part of your Design
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CONTACT THE AUTHOR
■ Fred Eady can be contacted
via email at email@example.com and
the EDTP Electronics website at