Education Shield

Copyright © Parallax Inc. Board of Education Shield (#35000) v1.2 3/2/2012 Page 6 of 8
Functional Description
1.
Four plated mounting holes, one on each corner, are connected to GND. They are useful for mounting the
board on the Boe-Bot robot chassis, and with tabletop standoff mounting hardware.
2. Arduino digital I/O sockets are electrically connected to the same-named sockets on the Arduino module. These
sockets are not affected by the shield’s power switch.
3. Servo and breadboard power lights indicate when those headers have power, controlled by the 3-position switch.
4. Servo ports connect to Digital 13, 12, 11, and 10, sharing access with the Digital I/O header by the breadboard.
5. The power select jumper between the servo ports can be set to either 5V (regulated by the shield’s 5 V, 1 A
regulator) or Vin (unregulated power from the Arduino).
6. The 5V and 3.3V sockets above the breadboard are regulated by the BOE Shield’s onboard 5 V, 1 A and 3.3 V,
200 mA regulators. Vin above the breadboard receives unregulated Vin from the Arduino, and is disconnected
when the Board of Education Shield’s power switch is set to 0.
7. 2 column x 17 row breadboard provides a convenient solderless prototyping area.
8. Socket labeled AREF (analog reference) electrically connects to the same-named socket on the Arduino.
9. Sockets labeled ANALOG IN 0…5 electrically connect to the same-named sockets on the Arduino.
10. Sockets labeled GND electrically connect to the same-named sockets on the Arduino.
11. Setting the power switch to 1 supplies voltages to the power header above breadboard and turns on the
breadboard indicator light. Setting the power switch to 2 supplies both the header above the breadboard AND
the servo ports and turns on the both the breadboard and servo indicator lights.
12. The RESET button is for making the Arduino restart its program.
13. The onboard 5 V regulator supplies up to 1 A.
14. The onboard 3.3 V regulator supplies up to 200 mA.
15. Three non-plated mounting holes are for mechanically attaching the BOE shield to the Arduino. One is labeled in
the diagram, and the other two flank the DIGITAL label to the left of the breadboard.
16. All shield header sockets pass power and signals straight through from the Arduino.
14. 3.3 V
regulator
13. 5 V
regulator
12. Reset button
11. Power
switch
10. Ground
sockets
9. Arduino analo
g
inputs
8. Arduino analog
reference
7. Breadboard
2 column x 17 row
6. Vin from Arduino
Onboard regulated:
3.3 V, 5 V
5. Power select
j
um
p
er: 5V or Vin
4. Servo Ports
Control signals from
Digital 13, 12, 11, 10
3. Servo and
Breadboard
power lights
2. Arduino digital I/O
15. Shield headers
16. Arduino
mounting holes
1. Ground plated
corner mounting
holes