Changes

X1202 Hardware

1,077 bytes added, 7 May

{{GD Template Impl}}
==Interface Schematic==
[[File:X1202-V1.1-IMG-7247-Interface-NEW.jpg|700px]]

[[File:X1202-PCB-Layout.png|700px]]

==Raspberry Pi GPIO used==
{| class="wikitable"
|-
! PIN# !! GPIO !! Functions
|-
| 3 || GPIO2 || I2C-SDA, battery fuel-gauge systems -reading battery voltage and percentage
|-
| 5 || GPIO3 || I2C-SCL, battery fuel-gauge systems -reading battery voltage and percentage
|-
| 31 || GPIO6 || AC power loss & power adapter failture detection, Low-power supply failed, High-power supply OK
|-
| 36 || GPIO16 || Control battery charging, High-charging disabled, Low-charging enabled
|}

==Battery voltage level indicators==
{| class="wikitable"
|-
! Battery voltage range (V) !! D1 !! D2 !! D3 !! D4 !! Remark
|-
| 3.87-4.2 || ON || ON || ON || ON || discharging levels of 100%
|-
| 3.7-3.87 || ON || ON || ON || OFF || discharging levels of 75%
|-
| 3.55-3.7 || ON || ON || OFF || OFF || discharging levels of 50%
|-
| 3.4-3.55 || ON || OFF || OFF || OFF || discharging levels of 25%
|-
| Below 3.4 || OFF || OFF || OFF || OFF || low battery
|}

Cindy

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