LCD Text Display

4) Koppla upp kretsen

• Placera XBee adaptern i bakbord och tråd upp makten bussar till varandra. Nästa, ansluta VCC terminal XBee adaptern till den positiva skenan och jordklämman till den negativa skenan.

• Vi gjorde det lättare att fästa batterihållaren till bakbord genom lödning några manliga huvuden på sin positiva och negativa ledningar leder.

• Anslut batteriet direkt till marken och makt skenor.

• Because the LCD is using a serial backpack, it will need to be connected by just three wires for power, ground and receive. We inserted them into the terminal block and used the screws on top to tighten the connection. (This particular backpack was marked “5I” on the terminal block but the documentation assured us that it was really 3.3V.)

• Connect the LCD’s power wire and ground wire to the respective rails on the breadboard as shown. Two AA batteries will provide 3V, which is close enough to the 3.3V rating of the LCD to power it effectively. The receive or RX connection will be routed to the TX or DOUT pin of the XBee.

• The receive or RX for the LCD should be connected to the TX or DOUT pin of the XBee, fysisk stift 2 såsom visas. That way whatever the XBee transmits will be received by the serial backpack on the LCD.

• Och slutligen, insert the XBee into the breakout board and connect the battery pack. Om det finns en strömbrytare på batteriet ska du växla till läget ON. You should see the LCD’s backlight come on. Now any text sent to the XBee should show up on the LCD! See the Basic Chat example for more information on sending text.

• Ovan är ett bakbord layout och ett schema över kretsen som referens.