UUGear Zero2Go Omini Manuale utente
Copyright © 2017 UUGear s.r.o. All rights reserved.
Zero2Go
Wide Input Range Power Supply for Your Raspberry Pi
User Manual (revision 1.02)
Copyright © 2017 UUGear s.r.o. All rights reserved.
Table of Content
Product Overview............................................................................................... 1
Product Details................................................................................................... 3
Package Content................................................................................................ 4
Specifications..................................................................................................... 5
Mounting on Raspberry Pi Zero.......................................................................... 6
Mounting on Other Raspberry Pi Models............................................................ 8
Connect Power Source .................................................................................... 10
Working Modes................................................................................................ 12
Before Installing Software ................................................................................ 13
Software Installation......................................................................................... 14
GPIO Pins Used by Zero2Go........................................................................... 15
About the Protective Frame.............................................................................. 16
Revision History............................................................................................... 17
1
Product Overview
Zero2Go is a small and smart power supply add-on for Raspberry Pi. When using the
pogo pin connector (included in package), it can connect to Raspberry Pi Zero without
soldering. It also supports other Raspberry Pi models who have 40-pin header.
Main features include:
Same board size with Raspberry Pi Zero
No soldering required when mounting on Raspberry Pi Zero
Wide range input voltage (5~26V)
Reversed polarity protection
Connect power source via micro-USB, DC power plug or electric wires
Support “pass-through” and “step-down” modes (auto switching)
Single tap to startup/shutdown Raspberry Pi
Zero2Go has quite wide input range (5V~26V), so it is will be convenient to power
your Raspberry Pi with power bank, Li-Po battery pack, solar panel, car battery or
different kinds of power adapters etc.
2
The board size of Zero2Go is exactly the same with Raspberry Pi Zero, and can be
mounted on Raspberry Pi Zero without soldering (thanks to the pogo pin connector).
You can also mount Zero2Go on other Raspberry Pi models that have 40-pin header,
if you solder a female header on Zero2Go as well (not included in the package).
How Zero2Go works? The diagram below gives you the main idea.
If the input voltage is higher than 5.5V, then the DC-DC converter will be used,
otherwise the input voltage will pass through to output. The e-Latching Switch will
maintain the power if system is up and the button on Zero2Go is not tapped or hold.
Since DC-DC converter needs more dropout to work well, inputting 5.5~7.0V should
be avoided when possible.
DC-DC
Step Down
Reversed
Polarity
Protection
e-Latching
Switch
Voltage
Comparator
Pass-through
Output
5V
Input
5~26V
3
Product Details
The figure below shows how Zero2Go looks like:
1) Micro-USB port for power source connection.
2) Red LED as error indicator.
3) Green LED as DC-DC step down indicator.
4) Blue LED as 5V pass through indicator.
5) Terminal block for power source connection.
6) DC power jack for power source connection.
7) Tact switch for power on/off.
8) 40-pin header footprint.
9) Acrylic protective frame.
4
Package Content
Each package of Zero2Go contains:
Zero2Go board x 1
Plastic male-female standoff x 4
M2.5 x 4 mm screws x 4
M2.5 nuts x 4
Dual-head Pogo pin connector (5-pin set)
5
Specifications
Dimension:
65mm x 30mm x 9mm
Weight
10g (net weight without any accessory)
Input Voltage (Vin)
5~26V 1
Output Voltage (Vout)
5V (5% tolerance)
Max Output Current
2.6A 2
DC-DC Efficiency
88% max
LED Indicators
Red: lights up when input polarity is reversed
Green: lights up when DC-DC converter is working
Blue: lights up when input pass through to output
Static Current
~0.5mA when Vin=5V
~4mA when Vin=26V 3
1
Input 5.5~7.0V is not recommended as the DC-DC converter needs more
dropout to work well.
2
Without adding heat sink to DC-DC chip and the inductor (U2 and L1), we
suggest to keep the current below 1.5A for long term usage. If you are using
the Pogo pin connector to output all current to Raspberry Pi Zero and
peripherals, the current should be 1A or lower.
3
It is the current drawn from the power source, when Raspberry Pi doesn’t get
powered.
6
Mounting on Raspberry Pi Zero
To mount Zero2Go on Raspberry Pi Zero (without 40-pin header soldered), the first
step is to fix the 4 male-female standoffs on four corners with screws.
Then you place the pogo pin connector on the correct position. Please make sure the
small tip on the plastic frame is on the right and it points to the SD card, as shown
below:
7
Now you can mount Zero2Go above your Raspberry Pi Zero, please make sure the
pogo pin connector contacts the correct pads:
Use the 4 nuts to fix your Zero2Go at its place. You may find tweezers are quite
helpful in this case:
After tightening the 4 nuts, Zero2Go is now firmly mounted on your Raspberry Pi Zero.
Please notice the pogo pin connector is designed to work with 1A current, if you
are expecting a much higher current output, please consider soldering a 40-pin
header for the connection.
8
Mounting on Other Raspberry Pi Models
If you want to mount Zero2Go on other Raspberry Pi models, you will need to solder a
40-pin header (not included in package) on your Zero2Go.
Which type of header should you solder? It depends. If you intend to mount Zero2Go
on Raspberry PiA+, B+, 2B or 3B, which has male 40-pin header onboard, you should
solder a female 40-pin header on Zero2Go. Optionally it could be a stacking header
which has extra long pins. Below is such an example:
If you are mounting Zero2Go on a Pi Zero with a female 40-pin header soldered, you
should solder a male 40-pin header on your Zero2Go. This is also the suggested
way for driving high current devices from Pi Zero.
After soldering the pin-header, mounting Zero2Go to your Raspberry Pi is the same
with mounting other HATs. Just connect the 40-pin headers together and it is done.
The pictures below shows how Zero2Go looks like when being mounted on Raspberry
Pi A+ and Raspberry Pi 3.
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