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BINARY-WATCH assembly cheatsheet
Binary-Watch design is made with small SMT
components in mind.
There are several ways how to assemble the
SMT components, the harder one requires no
extra tools but experience with soldering iron,
good eyesight. You hold the components with
tweezers then solder the legs one by one.
Easier assembly process for SMT components
requires some tools and preparation and follows
these steps:
(1) Apply solder paste, (2) place the
components, (3) reflow.
Refer to “Assembly_SMT.pdf” for more
information about the process.
Capacitors:
Name Size Value
C1 0603 100nF, 50VDC, 10%
C2, C3 0603 10pF, 50VDC, 10%
Resistor matrices:
Name Size Value
RM1, RM2, RM3 4×0603 4.7K, 5%
LEDs:
LEDs must be placed with the
green stripe/dot facing top of the
pad. Make sure the lighting part is
facing towards you.
Name Size Value
LED1..LED6 0603 GREEN 100mCd
LED7..LED11 0603 RED 100 mCd
Buttons:
Name Value
BUT1, BUT2 WTCM-TR
MCU:
Warning first pin is marked with DOT!
Name Size Value
U1 SSOP28 PIC16F722A-I/SS
Quartz:
Name Size Value
Q1 1206 CM7V-T1A 32.768kHz
12.5pF 20ppm
BAT holder:
Name Value
3V-LI_BAT BC2001
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