9-Channel Relay Switcher Board
with local and remote control
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Components
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Component List
Resistors
default: 5%, 0.25W
R1 = 330Ω
R2,R7 = 4.7kΩ
R3,R4 = 1kΩ
R5 = 4.7Ω
R6 = 10Ω
RN1 = 10kΩ, 8-way SIL network
P1 = 10kΩ preset
Capacitors
C1 = 220µF, 50V
C2,C3,C5,C6,C7,C8 = 100nF
C4 = 100µF, 50V
Semiconductors
D1,D3 = 1N4007
D2 = BAT43
IC1 = MC7805
IC2 = PIC18F45K22-E/P, programmed
IC3 = ULN2803A
T1,T2 = BC547
LED1 = red, 3mm
Miscellaneous
K1 = barrel jack, 1.95mm centre pin
K2 = 6-pin pinheader, 0.1'' pitch
K3-K11 = 3-way terminal block, 3.5mm pitch
LCD1 = LCD, 4x20, 5V with backlight w. 14-pin pinheader + 14-way pinheader socket
RE1-RE9 = Relay G5LE-1 12VDC coil, or equivalent
S1-S9 = Tactile switch, 12mm, B3F-4000 or equivalent
BoB1 = FT232R USB/Serial Bridge/BOB, Elektor Store # 110553
DIP socket, 40 contacts
DIP socket, 18 contacts
HS1 = TO-220-style heatsink
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