Specifications
117
between the two devices, and the daughter board handles all of those
connections as seen the Figure 59 below.
Figure 59 MRF24WB0MA Signal Interface
(Reprinted with permission from Microchip®)
Once the PICtail daughter board in plugged into the Explorer development board,
we will then have to download the correct Microchip® TCP/IP stack from
Microchip‟s® Application Libraries at http://www.microchip.com/mal. The
daughter board is compatible with the TCP/IP Stack version 5.25 or later. This
stack is preconfigured to use the preprogrammed MAC address in the
MRF24WB0MA module. This configuration can be changed by modifying the file
WF_Config.h. The Microchip TCP/IP stack examples are written to interface with
an existing wireless router using this information:
- SSID: MicrochipDemoAP
- Channel: 1, 6 or 11
- Security: Disabled
5.4 Safety Considerations
One issue that we have to take precautions for while design and building our
system is electrostatic discharge (ESD). ESD happens when electric current
flows between two objects at different electrical potentials. These unwanted
currents of ESD are the main culprit to electronic equipment damage. To prevent
ESD from affecting all of our electrical parts and components, we will be
implementing some policies to protect ourselves and the project. Grounding all
conductive materials, objects and personnel directly interfacing with the
electronic equipment during the prototyping, developing and testing phases of
the project is the best way to prevent ESD. Anti-static wrist straps are the most
cost effective method to prevent ESD.