the flat mark on the LED lines up with the silkscreen
on the board.
•Insert D1 in place and solder. The line on the 1N4004
should line up with the line on the silkscreen.
•Insert momentary switches in SW1 and SW2 and solder.
•Insert Y1 in place and solder. It can insert in either
direction and is optional.
•Insert the 47 µF cap in C6 and 1 µF caps in C1, C2, C3,
C4, and C7 with the positive leads in line with the “+”
marking on the circuit board as shown in Figure 3. Solder
•Bend the leads of the 7805 5V regulator at 90 degree
angles so it will insert flat on the circuit board as shown in
Figure 4. Solder in place.
•Insert the J1, the nine-pin DB- 9 connector, and solder the
leads in place.
•Insert a 2.1 mm power port in J2 and solder. You will
have to hold it to the board while you solder.
•Insert the slide switch into the three holes above the
J2 connector. There is “Off” and “On” above the holes.
Solder the switch in place.
•Insert three three-pin headers in the holes between U3
and U1. Solder them in place.
•Install three jumpers at the top position of the three-pin
headers you just installed.
•Insert a three-pin header in the serial LCD holes and solder
•Insert the 25-pin header in place and solder the leads.
•Insert the 16-pin RS-232 chip in the 16-pin socket. Make
sure the “U” shape in the top of the socket lines up with
the tiny “u” in the circuit board outline per the drawing in
•Insert the Atom Nano chip in the 28-pin socket. Make sure
the “U” shape in the top of the socket lines up with the tiny
“u” in the circuit board outline.
U1 28-pin Atom Nano Chip
U2 7805 5V Regulator
U3 MAX232N Serial Chip
R1 1M 1/4 W
R2 10K 1/4 W
R3 10K 1/4 W
R4 4.7K 1/4 W
R5, R6 330Ω 1/4 W
R7 10K 1/4 W (optional)
LD1, LD2, LD3 Red T1 3/4 LED
C1, C2, C3, C4, C7 1µF 100V Electrolytic Capacitor
C5 0.1µF Mylar Capacitor
C6 47µF 25V Electrolytic Capacitor
J1 DB- 9 nine-pin D-Sub Connector
J2 2.1 mm Power Port
SW1, SW2 Momentary Switch
SW3 Three-pin Slide Switch
Y1 20 MHz three-pin Resonator with Caps built in
1 Three-pin header for Serial LCD
3 Three-pin header for Program Jumpers
1 25-pin, SIP Header
pins of the header. Plug the power adapter into the wall
socket, move the power switch to the On position, and
watch your Ultimate OEM module come to life. The power
on LD1 LED should light up. If the Atom Nano test program
is still installed, then the pre-programmed demo program
will begin to run by flashing the on-board LEDs. The
Ultimate OEM module includes the following features:
•Serial LCD port
•Momentary switch tied to B0/P0 pin
•Two LEDs tied to P1 and P2
•8K memory for programming
•256 bytes EEPROM internal
•300+ bytes RAM for variables
When you are done,
you should have a module
that looks like the one
shown in Figure 6.
Getting started with
the Ultimate OEM module
is really simple. Plug a nine-pin straight through serial
cable or USB to RS-232
cable into the Ultimate
OEM module’s nine-pin
connector. Then connect
the other end into the serial
port or USB port of your
computer. Connect nine to
12 volts to the 2.1 mm
single pin power connector
on the Ultimate OEM
module or to the VIN/VSS