5,154
edits
Changes
|-
| Power output connector || XH2.54mm 2pin
|}
==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, rebooting and shutdown
|}
# Please use <span style="color:red;">momentary</span> switch only and don't use latching switch
# Connector - Pitch 2.0mm 4pos
==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.</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 (Jumper for PLD inserted, High=power loss,Low=Power supply normal)
|-
| 37 || GPIO26 for power management <span style="color:red;">(For V2.0 and later versions only)</span>
|-
| 38 || GPIO20 for buzzer control <span style="color:red;">(NEW Add on V2.1 only)</span>
|}