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X708
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[[File:X708-V2.0.jpg|thumb|X708 V2.0 UPS HAT]][[File:X708-V12-IMG-9489-interface.jpg|thumb|X708 V1.2 UPS HAT(Sold Out)]][[File:X708-IMG-8494-sche.jpg|thumb|X708 V1.0 UPS HAT(Sold Out)]][[File:X708-IMG-8492.jpg|thumb|X708 V2.0/V1.2/V1.0 UPS HAT]]==Overview==Our original intention of designing X708 is to match with NAS shell (such as [[X829File:X708-IMG-C18515.jpg|thumb|X708 V2.0/V1.2/V1.0 UPS HAT]], [[X857File:X708-IMG-8517-AM-C1 Case 1.jpg|X857-C1thumb|right|X708 V2.0/V1.2/V1.0 Battery]], [[X825File:X708-v2.0-C2 Case 01.jpg|X825thumb|right|X708+X728-C7A2]]) to provide a storage solution with UPS function. In order to save space, '''we must separate the battery''' from the UPS expansion board when designing . This is also the biggest difference between X708 and X728; ==Foreword==<span style="color:red;"> NOTE: The X708 is an advanced uninterruptible power supply expansion board for all current models of the UPS DOES NOT support Raspberry Pi using a 40 pin header. It provides 5.1V Max. 8000mA Power Backup for even the most demanding Raspberry Pi set ups, intelligent and safe power management, safe shutdown，AC power loss/ power adapter failure detection , auto power-on, full poweroff from software, and a cooling fan. hardware
===Why did X708 come out？===
===Safety Instructions and Warnings===
You must read these safety instructions and warnings before charging your batteries.
* <span style="color:red;">Lithium Polymer and Li-ion batteries are volatile. Failure to read and follow the below instructions may result in fire, personal injury and damage to property if charged or used improperly.
* <span style="color:red;">Must keep the X708 away from children.
* Please watch Main Video and Tutorial Video regarding 18650 batteries at: https://www.staysafebattery.com/en/
==Update History==
===X708 V2.0 is released===
x708 v2.0 is release on April 2022.
Update:
* Added protection circuit and alarm function when the battery is reversely connected (RESERVED will be on)
* Supports the control of two fan speeds
* Solved the problem that the old version can't charge when the battery is exhausted
* Improved AUTO ON function
* Added battery over-discharge function
* Improved power path management function: when external AC power is supplied, the AC PSU supplies power to the UPS shield and also charges the battery.
===X708 V1.2(off-production)===
Update:
* Remove the ASD function but you can achieve this function through software programming. Please refer to [[X708-Software]]
* New added GPIO16 to control fan speed, HIGH=>fast fan speed, LOW=>slow fan speed; refer to [[X708-Hardware]]
* Added voltage surge protection circuit
==Overview==
The X708 is an advanced uninterruptible power supply expansion board for all current models of the Raspberry Pi using a 40 pin header. It provides 5.1V Max. 8000mA Power Backup for even the most demanding Raspberry Pi set ups, intelligent and safe power management, safe shutdown，AC power loss/ power adapter failure detection , auto power-on, full poweroff from software, and a cooling fan.
The X708 reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards for enhanced applications. The X708 can also be used with the [[X825]]/[[X828]]/[[X829]] (2.5" HDD/SSD Shield) and [[X857]]/[[X862]]/[[X872]](MSATA/M.2 SSD shield) for safe data backup.
There is a 8-cell 18650 battery holder X708-A1 for X708, please refer to [[X708-A1]].
'''Some key features:'''
# Excellent UPS function such as Power Loss Detection(PLD), Automatic Safe Shutdown(ASD), Auto Power On(AON) etc., '''DC 5V Max. 6A output''';
# With cooling fan, no extra cooling solution.
# HAT size. Separate the battery from the expansion board, which can save a lot of space, which will bring more flexibility.
# Reserved two kind battery port (XH2.54 and PH2.0), supports 3.7V 18650 lithium battery and 3.7V lithium polymer battery, No capacity limit, only request '''3.7V''' lithium battery (No include lithium battery)
==Working principle==
The GPIO13 is used to control the power button, It goes high for 3 seconds that means the power switch is pressed and held for 3 seconds. then the X708 will issue a pulse to inform the system to implement safeshutdown via GPIO5, and will monitor the GPIO12, once shutdown process is implemented, GPIO 12 will go to low and will be recognized by the X708, then the X708 will wait for 7-8seconds then fully cut off power.
Firstly you have to get the script for power management well installed and run at boot. You can use the onboard power switch to verify , press and hold for 3 seconds, the blue LED will flash slowly and the shutdown is going then all LEDs will be off. once this works, then you can use the GPIO13 control.
The hardware and its firmware are verified. if you have a DMM, you can use it mesuare the GPIO voltage which will be helpful to understand above.
==Features==
<span style="font-weight:bold">Smart and powerful Uninterruptible Power Supply (UPS)</span>
* Provides continuous operations for up to 10~30hours (depending on battery type and qty used)
* Max 5.1V 8000mA 6000mA Power Backup for even the most demanding RPi set ups
* Supports 2A/3A fast battery charging
* Integrated over current protection and over voltage protection
* Operate in both charge mode and boost mode to allow full system management and battery power mgt
* Integrated IN-to-SYS pass-through path to pass the input voltage to the system
* <span style="color:red;">Advanced system power-path management avoids batteries frequent charging and discharging</span>* <span>Advanced system power-path management allows 3A fast charging and powering Raspberry Pi at the same time</span>
* On-board 4 green LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%
* Batteries attach via PH2.0-2P or XH2.54-2P
| SPECIFICATION ||
* <span style="color:red;font-weight:bold">Power supply via Type-C socket: 5Vdc ±5%, ≥3A; Via DC power jack: 5Vdc ±5%, ≥4A</span>
* UPS output : 5.1V ±5% Max 8A. 6A
* UPS charging current: 1.8~2.2A / 2.3~3.2A
* Terminal Battery Voltage : 4.24V
|-
| NOTES ||
* <span style="color:red;font-weight:bold">Do not apply power to your Raspberry Pi via the Micro USB socket or Type-C socket.</span>* <span style="color:red;font-weight:bold">Do not use the battery with built-in protection circuit.</span>
|}
==How to Power==
* Power via DC5521 Jack of X708, 5.1Vdc +/-5% , ≥4A (DC5525 Jack is compatible with DC5521, also support 5V PSU with DC5525 Jack)
* Power via USB Type-C port of X708, 5.1Vdc +/-5% , ≥3A (Geekworm Type-C 5V 4A 20W power supply is recommended.）
==X728-C1==
X728-C1 is a metal case for X708 / X735 or X728 V2.2 / V2.1 / V2.0.
Installation Video: https://youtu.be/QOG30LXb6ds
<gallery>
01-IMG-3946-main.jpg|for X735/X708/X728 V2.x/
02-IMG-3892-开关卖点.jpg|with metal switch
03-IMG-3894-散热.jpg|active cool
04-IMG-3907-场景图.jpg|application
06-IMG-3941-size.jpg|dimension
IMG-3916-acce.jpg|x728-c1 Accessories
IMG-3945-GPIO排线.jpg|with GPIO hole
</gallery>
==Packing List==
* 1x 1 x X708 Expansion Board * 8x 8 x M2.5 *5mm Screws* 4x 4 x M2.5 *12+6mm Spacers * 4x 4 x M2.5 *12mm Spacers * 2x 2 x Jumper link Pitch 2.54mm [[File:X708-V12-X708-V12-Packing..jpg|600px]][[File:X708-IMG-8487-配件图.jpg|600px]]
==User Manual==
===Installation Video===Installation Video for Raspberry Pi 4+X825 V1.5+X708/U100/X735+X825-C7 Case: https://youtu.be/kKIPf4AsiYY {{#ev:youtube|https://youtu.be/kKIPf4AsiYY}} Installation video for Raspberry Pi 4+X857 V1.2/X862 V1.0/X872 V1.1+X708/U100+X857-C1 Case: https://youtu.be/HGPpfDbfyxM {{#ev:youtube|https://youtu.be/HGPpfDbfyxM}} ===Software & Hardware Guide===* The software setting [[X708-script]]: This script is required to install to enable safe shutdown function.* [[X708-Hardware]]: Provides some hardware parameter information* AutoCAD Drawing Interchange Format file: [[File:X708-PCB-V1.0.zip|none]] ==FAQ=='''Q1: What battery is recommended for X708?''' A: * Pls use high quality batteries from PANPASONIC, Toshiba, etc.* Lithium battery need to meet following 2 conditions: 1. Working voltage: 3.6V-3.7V; 2. Maximum voltage after full: 4.2V* Do not use the battery with built-in protection circuit[[File:18650_battery_size-2.jpg|400px]] '''Q2: What type connector to request for lithium battery?'''* A: X708 provides two type battery connectors: PH2.0-2P and XH2.54-2P, you can connect two battery at the same with time, BUT please use the same model batteries, also please pay attention that the polarity of the XH2.54 and PH2.0 connectors is different. '''Q3: Is there a corresponding UPS NAS solution for 3.5-inch hard drives?'''* A: Sorry, There is no UPS NAS solution for 3.5-inch hard drive because the 3.5-inch hdd request 12V voltage, so we have no plans to support this demand for the time being. BUT you can refer to X835//X832, and they can solve some of your needs, they need external power supply. '''Q4: How to restart the pi board when AC Power supply is connected?'''* A: Please enable 'AUTO POWER ON' or 'AUTO ON' function if you want restart when the AC Power supply is reapplied. '''Q6: About auto shutdown, found your board will auto shutdown.'''* A: Please check if enable the ASD function (shorted the ASD header), if you enable the ASD function, please sure your oeration is right: first, place the battery into the battery holder, insert the jumper to ASD header <span style="color:red;">after 3 second</span>,this is very important!! '''Q7: Does the X708 support to use without any battery installed?'''* A: Yes, it is ok to use the X708 without battery, but please note that do not use low quality power supply. '''Q8: Why the X708 does not work normally?'''* A: Please make sure you have install the script before use, please refer to [[x728X708-Software]] '''Q9:If "AON" is shorted, can you use a latching power switch to turn the x708 on/off, or is it on all the time, regardless of the switch?'''* A:Sorry, this is not supported. '''Q10:Does the X708 support to use the latching switch?'''* A:No, the X708 does not support to connect latching switch, only support momentary switch. '''Q11: What is the fan type of the X708?'''* A: It is szie 3010 cooling fan with PH2.0-2P connector. '''Q12: Can you use the X708 with a poe hat to provide the power?'''* A: No, not suggest to use like this. '''Q13: Why does the X708 power off automatically?'''* A: Please use 3.7V lithium polymer battery without protection board, or battery with enough discharge capacity, or the X708 will power off automatically when use with high load. Refer to video test: https://youtu.be/Saco6rJm4ZQ
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