each strip. When the PCB is assembled, it looks like what
you see in Figure 13.
Putting It Together
Wire the LED strips according to Figure 14. Run the
telephone wire in the sequence shown in Figure 15.
Remove the USB drive from the RaspPi and insert it into
your desktop computer. Download the animation files
you’re interested in, then copy those animation files into
the sequences directory. You’ll need to provide the music
files yourself. If you don’t have the music already in MP3
format, you’ll need to purchase the tracks and download
them from Amazon. Copy the music tracks to the music
directory on the USB drive. Return the USB drive back to
the RaspPi.
Last, you’ll want to connect the 12V power supply to
power the LED strips and electronics. You’ll know if
everything has power because the power LEDs will be lit
on the circuit boards. If not, go back and check your
connections. If you’ve set up this project, I’d love to see
pictures of your display! You can connect to
pumpkinfx.com for more information and tips.
Happy Haunting! NV
Raspberry Pi Connector LED Controller
Raspberry Pi Rev B / B+
LED Controller LED Controller
Out In Out In Out In Out
12V Power
Supply
12V
12 12 12
12V
FIGURE 15. Wiring diagram. Face front
Qty Description PCB ID / Part Source RaspPi Connector Board
1 Stacking Header J1 www.adafruit.com/products/1112
1 Power Connector ED555/2DS J2 www.digikey.com/product-search/en?lang=en&site=us&keywords=ED555%2F2DS&x=0&y=0
1 Phone Jack A-2004-0-4-LP-N-R J3 www.digikey.com/product-search/en?lang=en&site=us&keywords=AE10382-ND&x=0&y=0
1 Power Switch L102021ML04Q S1 www.digikey.com/product-search/en?vendor=0&keywords=CKC5102-ND
1 Line Level Converter SN74HC86N U1 www.digikey.com/product-detail/en/SN74HC86N/296-8375-5-ND/376842
1 Voltage Regulator LM2576T-005G U2 www.digikey.com/product-search/en?lang=en&site=us&keywords=LM2576T-005G&x=0&y=0
1 100 µF 50V Cap ESY107M050AG3AA C1 www.digikey.com/product-search/en?Key Words=ESY107M050AG3AA&WT.z_header=link
1 40V 3A Diode 1N5822-TP D1 www.digikey.com/product-detail/en/1N5822-TP/1N5822-TPMSCT-ND/1793294
1 100 µH Inductor 2112-H-RC L1 www.digikey.com/product-search/en?lang=en&site=us&keywords=2112-H-RC&x=0&y=0
1 1,000 µF 10V Cap ESY108M010AH2EA C2 www.digikey.com/product-detail/en/ESY108M010AH2EA/399-6662-1-ND/3082794
1 Red LED WP7113ID D2 www.digikey.com/product-detail/en/WP7113ID/754-1264-ND/1747663
1 300 ohm Resistor CFM14JT300R R1 www.digikey.com/product-detail/en/CFM14JT300R/S300QCT-ND/2617732
Qty Description PCB ID / Part Source LED Controller Board
1 5.1V 500 mw Zener 1N5231BTR D1 www.digikey.com/product-detail/en/1N5231BTR/1N5231BFSCT-ND/1532765
1 Red LED WP7113ID D2 www.digikey.com/product-detail/en/WP7113ID/754-1264-ND/1747663
2 Phone Jack A-2004-0-4-LP-N-R J1-2 www.digikey.com/product-search/en?lang=en&site=us&keywords=AE10382-ND&x=0&y=0
1 ED555/16DS 3. 5 mm 16-pos Block J3 www.digikey.com/product-search/en?lang=en&site=us&keywords=ED1526-ND&x=0&y=0
1 1 µF 50µF Cap K105Z20Y5VF5TH5 C1 www.digikey.com/product-detail/en/K105Z20Y5VF5TH5/BC1168CT-ND/286790
2 300 ohm Resistor CFM14JT300R R1-2 www.digikey.com/product-detail/en/CFM14JT300R/S300QCT-ND/2617732
6 2K resistor RNMF14FTC2K00 R3-8 www.digikey.com/product-detail/en/RNMF14FTC2K00/S2KCACT-ND/2617814
2 PWM LED Driver WS2801SOP U1-2 www.futurlec.com/Others/WS2801.shtml
6 40V NPN Transistor P2N2222AG Q1-6 www.digikey.com/product-detail/en/P2N2222AG/P2N2222AGOS-ND/920244
September 2014 51
