Hardware Reference
In-Depth Information
Figure 9-13
SonMicro RFID reader attached to a USB-to-Serial
adapter, exploded view. The reader and antenna
normally sit on the breadboard in the same
position as shown in the I2C breadboard view in
Figure 9-14.
1
5
10
15
20
25
30
A
B
C
D
E
F
G
H
I
J
FTDI
USB-to-Serial
Cable
RX
TX
V
cc
Gnd
1
5
10
15
20
25
30
Figure 9-14
SonMicro RFID reader attached to an Arduino
via I2C, exploded view, showing the connections
under the module on the breadboard. The circuit
here is basically the same as both the TinkerKit
shield and the Spark Fun shield. The I2C connec-
tions need the two 4.7-kilohm pullup resistors.
You don't need this circuit if you're using an RFID
shield.
MADE
IN I TALY
DIGITAL
(PWM
~
)
-
+
L
1
5
10
15
20
25
30
UNO
A
B
C
D
E
ON
TX
RX
ARDUINO
RESET
ICSP
F
G
H
I
J
1
5
10
15
20
25
30
POWER
ANALOG
IN
