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3. ==Connector for External Power Switch==
4# Please use <span style="color:red;">momentary</span> switch only and don't use latching switch # Connector - Pitch 2. 0mm 4pos ==Power button (Script for power mgnt installed)==
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{{GD Template Impl}}
==Overview=='''X728 V2.5''' [[File:IMG-0449-interface-EN.jpg|800px|X728 V2.5]] '''X728 V2.3''' [[File:X728-V2.3-Interface-EN.jpg|800px|X728 V2.3]] [[File:X728-V2.3-Jumper-cap-function.jpg|800px|X728 V2.3]] '''X728 V2.1''' [[File:X728-V2.1-interface-EN.jpg|X728 V2.1 Interface]] Update:*New add a buzzer controled by GPIO20*DC jack is changed from DC5525 to DC5521. '''X728 V2.0''' [[File:X728-V2.0-01.jpg|700px|none|X728 V2.0]][[File:X728-V2.0-02.jpg|700px|none|X728 V2.0]] Update:* PIN33 (GPIO13) is replaced by the PIN37 (GPIO26) to avoid the I2S interface from v1.3 to v2.0. '''X728 V1.3''' [[File:X728-V1.3-Interface.jpg|800px|X728-V1.3-Interface]] '''X728 V1.2''' [[File:X728-IMG-7960-1.jpg|800px]] [[File:X728-IMG-7979-1. jpg|800px]] ==Power Jack and Connectors==
{| class="wikitable collapsible collapsed"
| Power input || 5Vdc +/- 5% ,≥3A
| Power output connector || XH2.54mm 2pin
|}
# X728 powers the Raspberry Pi via the 40-pin header (Pin 2& 4)# Don't power the Raspberry Pi via the Pi's type-C USB socket# X728 can be powered via the onboard DC jack <span style="color:red;">or</span> Type-C USB power socket==Pins and GPIO used==<span style="color:red;">PIN33 (GPIO13) is replaced by the PIN37 (GPIO26) to avoid the I2S interface from v1.3 to v2.0. 6-Pin Function Header</span>
{| class="wikitable collapsible collapsed"
! Pin No. !! Usage
|-
| 2, 4 || +5V power supply
|-
| 3, 5 || I2C for RTC and battery fuel-gauge systems
|-
| 6 || Ground
|-
| 29 || GPIO5 for power management
|-
| 32 || GPIO12 for power management
|-
| 33 || GPIO13 for power management <span style="color:red;">(For V1.3 and previous versions only)</span>
|-
| 31 || GPIO6 for AC power loss detection (PLD jumper inserted, High=Power loss,Low=Power supply normal)
|-
| 37 || GPIO26 for power management <span style="color:red;">(New add from V2.0)</span>
|-
| 38 || GPIO20 for buzzer control <span style="color:red;">(New add from V2.1 )</span>
|-
| 36 || GPIO16 for battery charging control <span style="color:red;">(New add from V2.5 )</span>
|}
{| class="wikitable"
! Pin No. !! GPIO No. !! Remark !! Ver 1.2 !! Ver 1.3 !! Ver 2.0 !! Ver 2.1 !! Ver 2.2 !! Ver 2.3!! Ver 2.5
|-
| 2, 4 || || 5V || √ || √ || √ || √ || √ || √||√
|-
| 3, 5 || || I2C for RTC and battery fuel-gauge systems || √ || √ || √ || √ || √ || √||√
|-
| 6 || || Ground || √ || √ || √ || √ || √ || √||√
|-
| 29 || GPIO05 || Power management || √ || √ || √ || √ || √ || √||√
|-
| 31 || GPIO06 || for AC power loss detection<br>(PLD jumper inserted, <br>High=Power loss,Low=Power supply normal) || √ || √ || √ || √ || √ || √||√
|-
| 32 || GPIO12 || Power management || √ || √ || √ || √ || √ || √||√
|-
| 33 || GPIO13 || Power management || √ || √ || || || || ||
|-
| 37 || GPIO26 || Power management<br>GPIO13 is replaced to GPIO26 from Ver 2.0 || || || √ || √ || √ || √||√
|-
| 38 || GPIO20 || for Buzzer control || || || || √ || √ || √||√
|-
| 36 || GPIO16 || for battery chargingcontrol || || || || || || ||√
|}
==6-Pin Function Header for X728 V1.2==
{| class="wikitable collapsible collapsed"
! Jumper Name !! Usage
(Power loss detection)"
|| Short - AC Power loss or power adapter failure detection enabled
<span style="color:red;">(Active if power adapter disconnected)</span>
Open - Power loss detection disabled
|-
(Auto power-on)
|| Short - Auto power-on when power applied
<span style="color:red;">(Will delay 3 seconds before powering on)</span>
Open - Auto power-on disabled
|-
(Auto shutdown)
|| Short - Automatic shutdown enabled when battery low (≤3Vdc )
<span style="color:red;">(Battery must be >3V and installed before enabling this function)</span>Open - Short - Automatic shutdown disabled Procedure to enable ASD function --IMPORTANT 1. Battery voltage must be >3Vdc 2. Insert the battery into the holder 3. Wait 3 seconds then insert the jumper 4. If the jumper inserted before battery, remove battery & jumper then repeat step 1, 2 and 3.
|}
{| class="wikitable collapsible collapsed"
! Pin No. !! Pin Description
| 2 || Ground
|-
| 3 || LED+ for battery low indicatorGround
|-
| 4 || LED+ for power on, rebooting and shutdown
|}
{| class="wikitable collapsible collapsed"
| Press and Release || Raspberry Pi and X728 turn on
|}
==DocumentFunction LEDs=={| class="wikitable collapsible collapsed"! LED Name !! Usage|-| BAT LOW || LED red on indicates battery low (≤3.0Vdc) or blue power button pressed (Jumper for ASD inserted)|-| || |-| 5V OUT || LED green on flashing indicates 5V power out and UPS powered by battery|-| AC FAIL || LED red on indicates AC power loss or PSU failure or PSU disconnected|-| || |-| PWR || LED blue indicatesStays on - Power onBlinks rapidly - system rebootingBlinks slowly - Shutting down|} ==Fuel gauge - LED Indicator==<span style="color:red;">Operation of Discharging:</span>{| class="wikitable collapsible collapsed"! Capacity C (%) !! D1 !! D2 !! D3 !! D4|-| C ≥75% || ON || ON || ON || ON|-| 50%≤C＜75% || ON || ON || ON || OFF|-| 25%≤C＜50% || ON || ON || OFF || OFF|-| 3%≤C＜25% || ON || OFF || OFF || OFF|-| 0%＜C＜3% || Flashing || OFF || OFF || OFF|} <span style="color:red;">Operation of charging:</span>{| class="wikitable collapsible collapsed"! Capacity C (%) !! D1 !! D2 !! D3 !! D4|-| Fully charged || ON || ON || ON || ON|-| 75%≤C || ON || ON || ON || Flashing|-| 50%≤C＜75% || ON || ON || Flashing || OFF|-| 25%≤C＜50% || ON || Flashing || OFF || OFF|-| C＜25% || Flashing || OFF || OFF || OFF|} ==PCB Layout==<gallery>X728-PCB.png|X728 V1.3 PCB LayoutX728_V2.0_PCB_Layout.jpg|X728 V2.0 PCB LayoutX728-V2.1-PCB.png|X728 V2.1 PCB Layout</gallery> ==18650 battery dimension==[[File:18650size.png]]<span style="color:red;">Do not use 18650 battery with built-in protection circuit</span> ==Raspberry Pi Official GPIO Expansion describe==[[File:RPI-GPIO-expansion.png | 800px]] ==Installation Guide==Installation Video for X728+X728-A1+X728-A2: https://youtu.be/q_TmqMNhJPM {{#ev:youtube|https://youtu.be/q_TmqMNhJPM}} [[File:X728+X728A1+X728A2-Installation-Guide.jpg|800px|X728]] Return to [[X728]]
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