View source for T208-hardware

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'''T208 V2.0 Jumper cap function'''
[[File:T208-Jumper-cap-function.jpg|700px|none|T208-V2.0-Interface]]

'''T208 V1.2 Jumper cap function'''
[[File:T208-IMG-接口示意.jpg|700px|none|T208-Interface]]
'''T208 Pin Description'''

[[File:T208-IMG-8581-接口示意.jpg|700px|T208-Interface]]

==Power Jack and Connectors==
{| class="wikitable collapsible collapsed"
| Power input || 5Vdc +/- 5% ,≥4A
|-
| DC Power Plug Size || 5.5*2.5mm
|-
| Power input connector || XH2.54mm 2pin
|-
| UPS power output || 5.1Vdc 8A
|-
| Power output connector || XH2.54mm 2pin
|}

# T208 powers the Jetson Nano via the 40-pin header (Pin 2 & 4)
# Don't power the Jetson Nano via the Micro USB socket & DC jack
# T208 can be powered via the onboard DC jack or XH2.54 power input connector.

==4-Pin Function Header==
{| class="wikitable collapsible collapsed"
! Jumper Name !! Usage
|-
| PLD
(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
|-
| AON
(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
|}

==Connector for External Power Switch==
{| class="wikitable collapsible collapsed"
! Pin No. !! Pin Description
|-
| 1 ||  Power on/off control connecting to switch
|-
| 2 ||  Ground
|-
| 3 ||  Ground
|-
| 4 ||  LED+ for power on /off
|}

# Please use <span style="color:red;">momentary</span> switch only and don't use latching switch 
# Connector - Pitch 2.0mm 4pos

==Power button & control==
{| class="wikitable collapsible collapsed"
| Press and Release ||   Jetson Nano and T208 turn on
|-
| Auto power off ||  System shutdown using the GUI 
|-
| Press and hold for at least 3 seconds ||  Force shutdown 
|}

==Function LEDs==
{| class="wikitable collapsible collapsed"
! LED Name !! Usage
|-
| AC FAIL || LED red on indicates AC power loss or PSU failure or PSU disconnected
|-
|  || 
|-
| PWR || LED blue indicates
Stays on - Power on
Stays off - 5V power output off
|}

==Pins and GPIO used==
{| class="wikitable collapsible collapsed"
! Pin No. !! Usage
|-
| 2, 4 ||  +5V power supply
|-
| 3, 5 ||  I2C for RTC and battery fuel-gauge systems
|-
| 6, 9 ||  Ground 
|-
| 7 || GPIO6 for AC power loss detection (Jumper for PLD inserted, High=power loss,Low=Power supply normal)
|-
| 10 ||  NC not connected
|}

==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
|}
==18650 battery dimension==
[[File:18650size.png]]
<span style="color:red;">Do not use 18650 battery with built-in protection circuit</span>

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[[Category:Product Manual]]
[[Category:Raspberry pi]]