Class 10

Based on what we went over last week, are we comfortable? Command Mode, Data Mode. We need to know address. We haqve two scheme of addressing. 64 and

There is two datasheet online. Official one and the other one. manual_xb_oem_rf_modules_802.15.4.pdf

Look at pin assignments, pins have multiple functions, pin 15.

If you know there is a clear indicator use it! you’ll find, most of the vendors put a pull up resistor in their reset pins. Whenever you see a bar top of the pin name it means that pin is going to go low. (Active low)

They run on 3.3 volt. Good habit is to talk to your new device through serially.

There are some Analog in pins, you need to update the firmware in order to use. How they work? You might want to connect 3 zigbees, and then those three can be connected to each other and also one can talk to everyone.

Unicast Mode, unicast vs. broadcast. by default these modeules operate on unicast mode which is only one radio at a time. Boradcast modeis anydevice can accept it if you use some certain addressing.

Clear channel Assesment checks out if there is any noise is going on or not.

How do we send data? Command Mode wait for guard time.

When connecting to zigbee we are restricted one line results. We can use a simple processing application to print out the results.

We cannot use signal strength to measure the accurate distance but we can measure the threshold. In order to measure the signal strength we need to go into command mode.

ps -a -h something in the terminal window