
Installation of LED bar
An LED bar is mounted on the lid of the case. First, it
makes a rectangular hole to mount the displaying part of the LED on the
case. The case which I used is made from aluminum. Therefore, I adjust
the size of the hole using the jigsaw and the files. An LED bar is
protected with the transparent acrylic panel with the thickness of 0.5
mm. Screws are used for the fixation of the acrylic panel and the LED
bar.

Open the holes
 The holes are made which
install a motor connection terminal, a variable resistor for the motor
speed setting and a power suupply connector on the side of the case. Also,
the holes are opened which installs control unit and an FET at the bottom.
These holes are made while the size of the parts are
measured. The confirmation is needed that the
variable resistor and the power suupply connector don't touch to the
control unit.

Installation and wiring for motor connection
terminal and FET
 The back panel is installed with the
motor connection terminal. Because the place of the wiring is narrow,
wiring to a terminal and an FET is done before installing of control unit.
A terminal cover is put to the central terminal (the drain) of the FET. It
is to prevent from touch among the terminals.

Installation and wiring for variable resistor and
power suupply connector
 The back panel is installed with
these parts. I removed the stopper of the variable resistor used the
needle plier. A knob is installed so as not touch with the screw part of
the variable resistor. When the axis of variable resistor is long, it
makes short. Because the wiring part of these parts
is narrow too, wiring to the terminals are done before installing control
unit.

Installation and wiring for control
unit
 Control unit is installed after all
wiring is ended to the parts which were installed on the side of the case.
Wiring is done in the order from the difficult place. I wired from the
grounding wire and the power supply wire. It is because those wires are
thick. Next, FET gate wire Variable resistor wire Control voltage wire. The
FET has the possibility to generate heat. Therefore, need an attention to
wire doesn't touch with the FET.

Installation of name plate
 I installed a name plate on the
lid. An attention is needed so as not for the
installing screw to do touch with the control unit.

Wiring for LED bar
 Wiring with the LED bar to have put
to the lid is done. Because there are many numbers of the wires, it pays
attention so as not to make a mistake. I wired in order of 8 7 6 5 4 3 2 GL. As for the length of the wiring, it considers a
situation which opened a lid. To prevent the touch of the wiring with the
FET when closing a lid, wiring is put under the control
unit.

Installation of rubber legs
The equipment is complete when installing rubber legs
at the bottom.
|