Figure 1 – Preliminary Functional Block Diagram of the RGB LED Matrix Controller
Table 1 – Project Timeline (Used to generate Gantt chart)
Task
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Task Name
Finalize Schematic
Order Parts
Design Component Library
Update Software Library to support different MCU
Design Footprints
Create additional SW APIs to make control easy
Design Layout
Parts Arrive - Take Inventory
Create circuit on breadboard to test functionality
Troubleshoot and Debug
Finalize SW API's and HW Schematic
Finalize Layout
Fabout
Receive PCB - Solder components
Troubleshoot and Debug PCB
Present Project
Duration
1 day
10 days
4 days
4 days
3 days
2 days
10 days
1 day
3 days
2 days
2 days
4 days
10 days
3 days
3 days
1 day
Start
Finish
Tue 4/10/12
Wed 4/11/12
Wed 4/11/12
Tue 4/17/12
Tue 4/17/12
Mon 4/23/12
Fri 4/20/12
Wed 4/25/12
Thu 4/26/12
Tue 5/1/12
Fri 5/4/12
Tue 5/8/12
Mon 5/14/12
Mon 5/28/12
Thu 5/31/12
Tue 6/5/12
Tue 4/10/12
Tue 4/24/12
Mon 4/16/12
Fri 4/20/12
Thu 4/19/12
Tue 4/24/12
Thu 5/3/12
Wed 4/25/12
Mon 4/30/12
Wed 5/2/12
Mon 5/7/12
Fri 5/11/12
Fri 5/25/12
Wed 5/30/12
Mon 6/4/12
Tue 6/5/12
Predecessors
1
1
3
3
4
5
2
8
9
7
11
12
13
14
15
Table 2 – Complete Bill of Materials
Q
T
Y
1
1
1
3
1
2
1
1
2
3
2
1
2
3
5
24
2
3
Ref
Desig.
TYPE
VENDOR PART #
J1
U1
U5
U2-4
U6
S1,2
N/A
J2
J1
J3-5
D1,2
C1
C2,3
C6,10,11
C4,5,7-9
R2-25
R26,27
R1,28,29
DISP
IC
IC
IC
IC
BUT
BATT
HEAD
HEAD
HEAD
LED
CAP
CAP
CAP
CAP
RES
RES
RES
YSM-2388CRGBC
ATmega328P
ULN2803A
SN74HC595N
L7805CV
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
DESCRIPTION
8x8 RGB LED Matrix
Microcontroller
8 Ch. Darlington Driver
8-bit Shift Register
5V Regulator
Mini Push Button SPST
6 x AA Battery Case
6-Pin ISP Header
16-Pin Female Headers
2-Pin Male Headers
Green Status LED
47uF
22pF
10uF
.1uF
100, 1/4W, 5%
200, 1/4W, 5%
10K, 1/4W, 5%
DIGIKEY/SPARK
FUN PART #
SF: COM-00683
SF: COM-09061
SF: COM-00312
SF: COM-00733
SF: COM-00107
SF: COM-00097
ADAFRUIT: 248
SF: PRT-10877
ADAFRUIT: 598
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
PACKAGE
(COMPONENT)
32-Pin Cust.
28-Pin DIP
18-Pin DIP
16-Pin DIP
TO-220
Omron B3F
N/A
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
Through-Hole
PRICE
$29.95
$4.30 (IEEE)
$1.95
$1.50
$1.25 (IEEE)
$0.35
$5.00
$1.50
$2.95 (IEEE)
$1.00 (IEEE)
$0.75 (IEEE)
$0.50 (IEEE)
$0.50 (IEEE)
$0.50 (IEEE)
$0.50 (IEEE)
$0.10 (IEEE)
$0.10 (IEEE)
$0.10 (IEEE)
Total:
Subtotal
$29.95
$4.30
$1.95
$4.50
$1.25
$0.70
$5.00
$1.50
$2.95
$3.00
$1.50
$0.50
$1.00
$1.50
$2.50
$2.40
$0.20
$0.30
$65.00
Figure 2 – SparkFun Schematic by Ryan Owens for the RGB Matrix Serial Interface
Figure 3 – Custom Schematic Design for the 8x8 RGB LED Matrix Controller
Figure 4 – Custom Layout for the 8x8 RGB LED Matrix Controller PCB
Figure 5 – Completed PCB #1 - 8x8 RGB LED Matrix Controller
Figure 6 – Populated PCB #2 - 8x8 RGB LED Matrix Controller
Figure 7 – PCB #1 Function buttons side-view
Figure 8 – PCB #1 Solder-joint view #1
Figure 9 – PCB #1 Solder-joint view #2
Figure 10 – PCB #1 Solder-joint view #3