Booma-RC Mikey User manual

Micro Switch
(Mikey)
Booma RC
1
www.boomarc.com

Congratulaons for choosing the Booma RC Micro (Mikey) Switch.
Micro Switch was designed as a general purpose opcally isolated
switch for use in giant scale RC and robocs. One of the key design
criteria was to keep Micro Switch light, small and aordable.
Before you install Micro Switch please take the me
to read these instrucons. A few simple steps will
have you successfully using this highly versale prod-
uct in no me at all.
Micro Switch Features:
- Microprocessor control - of Opcal Isolated digital switching circuit.
- Fail Safe Switching - follows fail safe switching of receiver.
- High Bright Blue LED on OUTPUT - for easy daylight viewing.
- Remote Operaon - via transmier.
- Micro-Power design less than 1uA in standby mode. Less drain on your
model’s power supply so you can leave Micro Switch connected to the
baery permanently.
- Baery Input Voltage 1v DC to 15v DC. (AC version available by special
order).
- Weight 14 grams.
- Dimensions approximately 33mm x 16mm x 10mm.
Typical Usage
- Ignion switch.
- Bomb door switch.
- Navigaon Lights Switching.
- System Kill switch.
- Glow Driver Switch.
- Sck controlled Idle switch.
2

Typical Connecon Examples for Mi-
cro Switch.
Ignition
Battery
Micro Switch Receiver
Ignition
On Board
Glow
Battery
Micro Switch Receiver
Glow Plug
or any load
Micro Switch as a Gas powered Micro Switch
Micro Switch as an “On Board” Glow switch
3

Lets get started
Connect Micro Switch as shown above.
Micro Switch ‘s microprocessor draws it’s power from your re-
ceiver and is only in awake state while your receiver is switched
on. Switching o power to your receiver will put Micro Switch to
sleep and remove the power to the load.
PLEASE NOTE: One of the safety features is that Micro Switch
draws it’s power from your models’ receiver so Micro Switch is
completely inoperable unless connected to your model’s receiver
and the receiver is powered up!
4
Baery input
Baery input
To Load
To Load
Connecon to
Receiver Channel
Lead Connecon Examples for
Micro Switch.

5
Micro Switch also requires one receiver channel to operate
and is set to switch at approximately 50% of sck posion. It is
recommended to connect Micro Switch to a switch channel on
your receiver and adjust the switch unl Micro Switch operates
as required. Seng up a transmier for switching will dier for
each transmier type so please refer to your transmier manual
for switch channel seng.
FOR THE TECHNICALLY MINDED ONLY
Micro Switch has a dead-band where neither an On or O state
is acve. This funconality is built into Micro Switch so that
Switch uer cannot happen.
Also, a bad signal (no pulse or less than 50% mark space rao)
must be present for more than 20 connuous frames before
Micro Switch will switch on or o. In most modern receivers fail
safe is built in so this condion should never be met except as a
complete system safety feature.
This dead band feature comes at a cost of a small delay (approxi-
mately 500 - 600 milliseconds) in switching ON/OFF.
PLEASE NOTE
Please observe correct connecon polarity i.e. RED is baery
posive and BLACK is baery negave.
An Incorrect polarity connecng will not allow your baery to
supply power to the Ignion.

Turning Micro Switch ON
Aer connecng Micro Switch to the models receiver and a bat-
tery or power to the baery input (as shown on page 4) turn on
the model’s receiver. If you have adjusted your receiver channel
correctly, switching on the selected transmier switch/channel
will arm Micro Switch and the LED will be permanently lit.
If the blue LED does not light up then you will need to adjust
your transmier. Please refer to your transmier instrucon
manual. Also please note a baery (power) must be connected
to the micro Switch baery input before the blue indicator LED
will light up.
HINT test Micro Switch’s operaon by using a sck channel
(moving the sck up down or le right) to verify Micro Switch’s
arming funcon (Blue LED permanently On) and then once sas-
ed all is well move Micro Switch to a switch channel on your
models receiver.
Turning Micro Switch OFF
To turn Micro Switch o simply move the transmier switch to
the opposite posion. The Blue LED light will exnguish indicat-
ing that power is disconnected from the load.
6

7
FACTS
Why does Micro Switch turn OFF when I switch to a turn on con-
dion via my transmier? Micro Switch is designed to switch on
from a pulse width greater that 50%. Reverse the switch condion
on your transmier will set it right.
Can I use Micro Switch as a General Purpose Opcally Isolated
switch? Yes you can, Micro Switch can be used for any general
purpose funcon as long as the maximum recommended volt-
age (12V) and current draw (4A or 6A depending on model ) is
observed.
Current carrying capacity of connectors - Micro Switch will handle
up to 4A current on the baery circuit so a JR type connector is
adequate for most uses. If a higher current rang is required we
also oer Micro Switch in a 6A version with Ultra connectors. Cur-
rent capacity will then be limited to Micro Switch design.
Using Micro Switch with a voltage regulator - Micro Switch was
designed to work with all current RC products regulated and un-
regulated. If you prefer using LifeP04 chemistry baeries (nominal
6.4v) then Micro Switch will work excellently in most RC Ignion
applicaons without a regulator.
If you prefer to use newer higher 7.2 volt servos then we recom-
mend using Micro Switch with Lion (nominal 8.2v) or Lipo baer-
ies (nominal 8.4v).

8
Specicaons
- Opcal Isolated digital switching circuit with beer than 1500V
Isolaon.
- Works with the following Baery chemistries
LifeP04 (2 -3 cells).
LiPo (2 - 3 cells).
Lion (2 - 3 cells).
NiCd (1 - 10 Cells).
NiMH (1 - 10 Cells).
NiCd (1 Cell) Glow Driver.
NiMH (1 Cell) Glow Driver.
- Maximum input voltage
12 volts 6A version.
12 volts 4A version.
- Minimum input voltage 1 volt. (Ideal also for glow driver)
- Max connuous current: 4A or 6A depending on version
- Weight 15 grams.
- Approximately 1uA current draw from ignion baery.
- Length 33 mm x width 16 mm x Depth 10 mm
- Operang Temperature - 40 to 80 degrees Celsius
12 Month Replacement Warranty
Booma RC will replace this product within 12 months if found to
be defecve in material and/or workmanship when used in the
intended purpose. The warranty does not cover - Shipping charges
related to any warranty claim. An over voltage or over current
usage beyond stated specicaon. Damage due to system failure,
negligence, abuse, accident, improper installaon or freezing.
Loss of me, inconvenience, loss of model, or other incidental or
consequenal damages.