User Guide
www.kitronik.co.uk
Micro USB Breakout
Micro USB Breakout - 5104
(Dimensions in mm)
Circuit Overview
This circuit breaks out the pins of a micro USB
connector while also providing a power switch
and room for an optional resistor.
This circuit provides an easy way to power a
device from a mobile phone charger or PC and
also allows access to the data pins if your device
needs to communicate via USB.
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User Guide
www.kitronik.co.uk
Micro USB Breakout
Pinout
GND
ID
Leads to your computer’s ground via the USB port.
This permits the device to work with a USB
Accessory Charger Adapter which allows an
OTG(On-The-Go) device to be attached to both the
board and another device simultaneously.
Data Pin
Data Pin
The 5V output of the USB drive routed through any
optional resistor. Due to the potential drop across
the resistor this will be lower than 5V. This pin is
also connected to the switch.
Connected directly to the 5V pin on the USB port, no
switch or resistor is on this line.
Connected to 5V through the switch, without a
resistor.
D+
D-
R
5V
SW
Example circuit
A really simple circuit you can build to utilise this board is simply
adding a resistor and then connecting an LED across the pins R and
GND.
The switch can be used to toggle the LED on or off.
For a standard red LED with a forward voltage of around 2V you
should use a 150 Ohm resistor.
For different LEDs or multiple LEDs in parallel you can use the
calculator tool on our website.
Important Application Notes
The switch is rated for 6V DC / 0.3A.
When designing a self-powered device, remember that you must not pull a D+ or D- line above the Vbus
voltage supplied. This can damage the USB port on your computer.
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Microcontroller MCU
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