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Product Introduction

FLY-KPPM installation shutdown module is designed specifically for development boards such as Raspberry Pi to ensure data security. When a power outage occurs, it automatically switches to capacitor power to ensure stable operation of the development board for 15 seconds, safeguarding data integrity. Compact and easy to install.

Product Precautions​

Note

The input power only supports DC12-24V. Ensure correct polarity when wiring, and perform wiring in a power-off state. We are not liable for any damage caused by incorrect wiring.

Note

The +5V at the 5V OUT socket is emergency power output and should not be used for regular power supply. Use USB-OUT or SIG/IO for powering the main unit.

Note

When using the safety shutdown module, a 12V-24V power supply must be used. To ensure normal operation of the module, the internal 5V output voltage of the safety shutdown module must not be lower than 4.9V, otherwise the safety shutdown module will draw additional power internally, causing the capacitors to remain charged and leading to continuous heating of the module.

Explanation of Display Content on the Product Screen​

Screen Content DescriptionLeft Side ExplanationRight Side ParameterRight Side Explanation
IN:Input VoltageOUT:Output Voltage
CA:Total Capacitor VoltageOI:Output Load Current
C1:C1 Capacitor VoltageC2:C2 Capacitor Voltage
Temp:Temperature of the Safety Shutdown ModuleE:Status Prompt, see below
Display ContentStatus Description
Ready!Normal Startup
IN LOW!Low Input Voltage
IN OVR!Overcurrent Output
OV LOE!Low Output Voltage
OV OVROvercurrent Output
TP OVR!High Temperature
NONEUnknown Error
R: XX SecIf power is interrupted within 10 seconds before re-powering, this prompt will show. After countdown ends, restart the main unit

Download Fixed Housing Model​

https://cdn.mellow.klipper.cn/STEP/KPPM.zip

Pinout Description​

  • OUT-RST Reset

  • OUT-PDN Power Down

  • IN-PIN

    Pull-up by default. The module will automatically detect the last power failure time upon power-up. If the power failure duration is less than 10 seconds, it will wait until 10 seconds after power-down to switch the 5V output once (ensuring the main unit completes shutdown and can be restarted). Connecting to GND will disable the automatic detection of power failure duration.

FLY Main Unit Usage Tutorial​

info

Applicable only to FLY-Pi, FLY-Pi-V2, FLY-C8

To use the FLY main unit, execute the following commands via SSH:

sudo curl -kfSL --progress-bar https://cdn.mellow.klipper.cn/firmware/sun50i-h5-power-key.dtbo -o /boot/dtb/allwinner/overlay/sun50i-h5-power-key.dtbo
sudo grep -q "^overlays=.*power-key" /boot/FlyOS-Env.txt || sudo sed -i '/^overlays=/ s/$/ power-key/' /boot/FlyOS-Env.txt

Reboot the system:

sudo reboot

FLY Main Unit Wiring Tutorial​

  • FLY-C8 Using 5V Wiring

Raspberry Pi Main Unit Usage Tutorial​

Similar to the above steps, for Raspberry Pi, insert the system image SD card into your computer, add the command dtoverlay=gpio-shutdown,gpio_pin=21 to the config.txt file, then save and exit.

  • Raspberry Pi Using 5V Wiring