September 2007
Beginner to intermediate
432 pages
17h 48m
English
Content preview from Making Things Talk
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SESSIONLESS NETWORKS 233
LD1117-33V
Voltage Reg
In Out
7805
+5V Voltage Reg
In Out
To +9-12V DC supply
1
4
2
3
Figaro
TGS2620
Gas Sensor
4.7KΩ
AD2 / DIO2
AD3 / DIO3
RTS / AD6 / DIO6
Ass't / AD5 / DIO5
Vref
SLP
CTS / DIO7
AD4 / DIO4
AD1 / DIO1
AD0 / DIO0
GND
DTR
NC
PWM1
PWM0 / RSSI
RESET
RX
TX
Vcc
TXen
Xbee Radio
10µF 1µF
Figure 7-6
XBee radio connected to a
Figaro Sensors VOC sensor. The
detail photo shows the wiring
underneath the XBee radio.
8 All the projects in this chapter
are made using the LD1117-33V 3.3V
voltage regulator. The pins on this
regulator are configured differently
from the pins on the other regulators
used in the book. Be sure to check
the data sheet for your regulator to
be sure you have the pins correct.
You should make a habit of checking
this because the same catalog
number may be supplied as slightly
different parts. For example, SparkFun
part number COM-00526 (Voltage
Regulator—3.3V) can arrive either as
an LD1117-33V or an LM7833, which do
not have the same pin configuration.
Making_Things_Talk.indb 233 11/13/09 4:55 PM
234 MAKING THINGS TALK
To +3V DC supply
M
1KΩ
TIP120
1N4004
DC motor
0 - 10K
AD2 / DIO2
AD3 / DIO3
RTS / AD6 / DIO6
Ass't / AD5 / DIO5
Vref
SLP
CTS / DIO7
AD4 / DIO4
AD1 / DIO1
AD0 / DIO0
GND
DTR
NC
PWM1
PWM0 / RSSI
RESET
RX
TX
Vcc
TXen
Xbee Radio
100µF
Figure 7-7
XBee radio connected to a Cymbal Monkey ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.