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라즈베리용 스마트 UPS 모듈 PIVOYAGER
(PIVOYAGER: The Smart UPS For The Raspberry Pi)
개요
- 본 제품은 표준 리포 배터리와 동작하게 디자인된 라즈베리용 스마트 UPS 모듈입니다.
- 프로그래밍 가능한 와치독, 자동 재시작, RTC를 지원하는 젶무입니다.
- Pi Zero pHAT으로 디자인되었지만 40핀 헤더를 가진 파이 3B+ 나 Pi 4와도 동작합니다.
- micro-B USB 커넥터를 통해 USB 전원이 공급이 되면, 라즈베리에 전원을 공급하면서 필요하다면 배터리도 충전을 합니다.
- 충전 전류는 1000mA 혹은 500mA 선택이 가능합니다.
- USB 전원이 제거되면 PiVoyager는 자동으로 배터리 전원으로 스위치하여 라즈베리 파이에 5V(2.1A max)를 공급합니다.
- RTC를 장착하여 현재 시간을 저장할 수 있으며, 전원소스가 연결되어 있는 한 RTC 정보는 유지됩니다.
- 제공되는 소프트웨어(문서섹션 참조)로 PiVoyager를 완전히 제어하고 모니터링할 수 있습니다.
특징
- Monitor power status and battery voltage,
- Force the Raspberry Pi to fully shutdown after a specified delay,
- Act as a watchdog, powering down the Raspberry Pi if it becomes inactive,
- Power up the Raspberry Pi at a certain date/time (alarm),
- Power up the Raspberry Pi after a certain delay following a shutdown.
- Update the firmware through I2C thanks to a built-in bootloader.
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HARDWARE
The PiVoyager has four indicator LEDs, 3 at the bottom left and 1 at the top left:
- PG: green, indicates USB power
- CH: yellow, indicates charging status
- ST: red, indicates overall status
- 5V: blue, indicates that the Raspberry Pi is currently powered
The PiVoyager has a small button. Pressing this button for more than 3 seconds will shut down the Raspberry Pi. Once shut down, the Raspberry Pi can be restarted by pressing the same button. It is possible to add a JST PH header on the PiVoyager to connect your own tact switch as an alternative to the one provided on the pHAT.
The PiVoyager does not include battery protection circuity and should be connected to Li-Ion or LiPo batteries with their own protection circuit, using the two-pin JST PH header. An alternative 2.54mm 2-pin header is also provided for battery connection.
The PiVoyager is targetted at batteries with a nominal voltage of 3.7V, a charging voltage of 4.2V and supporting a charge current of 1000mA. The charge current can be reduced to 500mA by changing a trace jumper on the bottom layer of the board. The battery is considered as LOW if the voltage falls below 3.1V and will remain in LOW state until the voltage rises above 3.3V. At startup, the PiVoyager will refuse to power the Raspberry Pi when in LOW state and will wait for the battery to charge sufficiently first.
문서
- For more details, including software download instructions, see our documentation here.
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More information can be found with the following links:
The PiVoyager is open-source/open-hardware. It features an I2C bootloader that enables to upload new or custom firmware if needed.
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