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Summary of Contents for UUGear Zero2Go
- Page 1 Zero2Go Wide Input Range Power Supply for Your Raspberry Pi User Manual (revision 1.02) Copyright © 2017 UUGear s.r.o. All rights reserved.
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Page 2: Table Of Contents
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 Copyright © 2017 UUGear s.r.o. All rights reserved. -
Page 3: Product Overview
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. - Page 4 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...
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Page 5: Product Details
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. -
Page 6: Package Content
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) -
Page 7: Specifications
Specifications 65mm x 30mm x 9mm Dimension: Weight 10g (net weight without any accessory) Input Voltage (V 5~26V Output Voltage (V 5V (5% tolerance) 2.6A Max Output Current DC-DC Efficiency 88% max Red: lights up when input polarity is reversed Green: lights up when DC-DC converter is working LED Indicators Blue: lights up when input pass through to output... -
Page 8: Mounting On Raspberry Pi Zero
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... - Page 9 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.
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Page 10: Mounting On Other Raspberry Pi Models
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 Pi A+, B+, 2B or 3B, which has male 40-pin header onboard, you should solder a female 40-pin header on Zero2Go. -
Page 12: Connect Power Source
Connect Power Source Zero2Go has three input power port on board, the micro-USB port (A), the terminal block (B) and DC power jack (C). You can use one of them to connect the power source for your Raspberry Pi. Caution: do not connect multiple power sources at the same time! The micro-USB port is for connecting those power adapters with matching plug. - Page 13 Caution: please avoid poor contact between power source and Zero2Go. If Zero2Go is used on a portable project, it is recommended to use the micro-USB or terminal block for power source connection. If the DC power jack is used, it is recommended to take additional efforts to fix the barrel shaped plug on its place.
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Page 14: Working Modes
Working Modes If the input polarity is reversed, the red LED will light up and Zero2Go does not work. This will not harm any device as the power switch is disabled in this case. After correctly connection with the power source, a single tap on the button (K1) will turn on your Raspberry Pi. -
Page 15: Before Installing Software
Otherwise the boot menu will postpone the booting long enough to make Zero2Go think the system is down and then cut the power (so your Raspberry Pi will not boot). Here is how to skip the NOOBS boot menu: you insert your SD card to your PC (use a SD card reader if your PC doesn’t have SD card slot), open the RECOVERY partition... -
Page 16: Software Installation
Software Installation After mounting Zero2Go on your Raspberry Pi, you can tap on the button to turn your Raspberry Pi on. However, without installing the software, you can only hold the button for several seconds to force the power cut, which is not recommended. -
Page 17: Gpio Pins Used By Zero2Go
Besides the +5V and GND pins, Zero2Go uses GPIO-4 (BCM naming) to monitor the button tapping. The TXD pin is also monitored but it will not affect the data transferring via serial port. Zero2Go will cut power when TXD pin gets pulled down for long enough (> 3 seconds). -
Page 18: About The Protective Frame
If for any reason, the feedback channel is wrong sample and the output voltage will be wrong. In Zero2Go we use a SO-8 IC (U2) to build the DC-DC converter, some resistors and capacitors around setup the feedback channel for it. If you use a finger to touch some of them at the same time, you may interfere the feedback channel and the result could be disaster (scenario A in figure below). -
Page 19: Revision History
Revision History Revision Date Description 1.00 2016.11.22 Initial revision 1.01 2017.03.03 Add caution about unreliable power source connection. Add “Before Installing Software” section. 1.02 2017.04.03...
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