X708-Hardware
4-Pin Function Header for X708 V1.2
❶ Power Jack and Connectors
Power input | 5Vdc +/- 5% , ≥3A |
DC Power Plug Size | 5.5*2.5mm |
USB power in socket | Type-C |
UPS power output | 5.1Vdc 8A(Max.) |
Power output connector | 2-pin XH2.54mm *2 |
- X708 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
- X708 can be powered via the onboard DC jack or Type-C USB power socket
❷ 6-Pin Function Header for X708 V1.0
Jumper Name | Usage |
---|---|
PLD
(Power loss detection) Pin 1&2 |
|
AON
(Auto power-on) Pin 3&4 |
|
ASD
(Auto shutdown) Pin 5&6 |
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.
|
❸ How to connector external power switch
Pin No. | Pin Description |
---|---|
1 | Power on/off control connecting to switch |
2 | Ground |
3 | Ground |
4 | LED+ for power on, rebooting and shutdown |
❹ Power button (Script for power mgnt installed)
Press and Release | Raspberry Pi and X708 turn on |
---|---|
Press and hold for 1~2 seconds | System rebooting |
Press and hold for 3~7 seconds | System shutting down |
Press and hold for >8 seconds | Force shutdown |
❺ Function LEDs
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 indicates Stays on - Power on Blinks rapidly - system rebooting Blinks slowly - Shutting down |
❻ Fuel gauge - LED Indicator
Operation of Discharging
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 |
Operation of charging
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 |
❼ Pins and GPIO used
Pin No. | Usage | Remark |
---|---|---|
2, 4 | +5V power supply | |
6 | Ground | |
29 | GPIO5 for power management | |
32 | GPIO12 for power management | |
33 | GPIO13 for power management | |
31 | GPIO6 for AC power loss detection
(Jumper for PLD inserted,High=POWER loss, Low=Power supply normal) |
|
36 | GPIO16 for fan speed: HIGH => fast, LOW=> slow | New added on V1.2 |
❽ 18650 battery dimension
Please do not use 18650 battery with built-in protection circuit
❾ How to programming to get ASD function on V1.2 version
The following is fake C/C++ code:
while(1) { // You need to implement getCurrentVoltage function float fVoltage = getCurrentVoltage(); if (fVoltage <= 2.5) { //execute shut down command, "sudo x708off" break; } }Return to X708Enable comment auto-refresherAnonymous user #173 days agoScore 0Permalink |Lisaone day 10 hours 14 minutes agoScore 0PermalinkAnonymous user #820 months agoScore 0Permalink |Walker20 months agoScore 0PermalinkLisaone day 10 hours 17 minutes agoScore 0PermalinkAnonymous user #1526 months agoScore 0Permalink |Lisa26 months agoScore 0PermalinkAnonymous user #1526 months agoScore 0Permalink |Lisa26 months agoScore 0PermalinkAnonymous user #1626 months agoScore 0PermalinkLisa26 months agoScore 0PermalinkAnonymous user #1427 months agoScore 0Permalink |Anonymous user #1327 months agoScore 0PermalinkAnonymous user #1427 months agoScore 0PermalinkAnonymous user #1327 months agoScore 0Permalink |Lisa27 months agoScore 0PermalinkAnonymous user #1229 months agoScore 0Permalink |Lisa29 months agoScore 0PermalinkAnonymous user #1031 months agoScore 0Permalink |Lisa31 months agoScore 0PermalinkAnonymous user #1033 months agoScore 0Permalink |Lisa32 months agoScore 0PermalinkLisa32 months agoScore 0PermalinkAnonymous user #1031 months agoScore 0PermalinkLisa31 months agoScore 0PermalinkAnonymous user #933 months agoScore 0Permalink |Lisa33 months agoScore 0PermalinkAnonymous user #834 months agoScore 0Permalink |Lisa34 months agoScore 0PermalinkAnonymous user #737 months agoScore 0Permalink |Anonymous user #351 months agoScore 0Permalink |Anonymous user #450 months agoScore 0PermalinkAnonymous user #550 months agoScore 0PermalinkAnonymous user #550 months agoScore 0PermalinkXiali49 months agoScore 0PermalinkAnonymous user #251 months agoScore 0Permalink |Anonymous user #550 months agoScore 0PermalinkAnonymous user #649 months agoScore 0PermalinkAnonymous user #1130 months agoScore 0PermalinkAnonymous user #151 months agoScore 0Permalink |