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X1202 Hardware: Difference between revisions
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| Below 3.4 || OFF || OFF || OFF || OFF || low battery | | Below 3.4 || OFF || OFF || OFF || OFF || low battery | ||
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[[Category:Raspberry pi]] | |||
[[Category:Knowledge]] | |||
Revision as of 19:27, 24 April 2026
Interface Schematic
Raspberry Pi GPIO used
| 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
| 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 |