UPS Plus is a new generation of UPS power management module. It is an improved version of the original UPS prototype. It has been fixed the bug that UPS could not charge and automatically power off during work time. It can not only perform good battery power management, but also provide stable voltage output and RTC functions. At the same time,it support for FCP, AFC, SFCP fast charge protocol, support BC1.2 charging protocol, support battery terminal current/voltage monitoring and support two-way monitoring of charge and discharge. It can provide programmable PVD function. Power Voltage Detector (PVD) can be used to detect if batteries voltage is below or above configured voltage. Once this function has been enabled, it will monitoring your batteries voltage, and you can control whether or not shut down Raspberry Pi via simple bash script or python script. This function will protect your batteries from damage caused by excessive discharge. It can provide Adjustable data sampling Rate. This function allows you to adjust the data sampling rate so that you can get more detailed battery information and also it will consume some power. The data sampling information can communicate with the upper computer device through the I2C protocol. UPS Plus supports the OTA firmware upgrade function. Once there is a new firmware update, it is very convenient for you to upgrade firmware for UPS Plus. The firmware upgrade can be completed only by connecting to the Internet,and execute a python script. Support battery temperature monitoring and power-down memory function. UPS Plus can be set to automatically start the Raspberry Pi after the external power comes on. The programmable shutdown and forced restart function will provide you with a remote power-off restart management method. That means you don’t need to go Unplug the power cable or press the power button to cut off the power again. You can set the program to disconnect the power supply after a few seconds after the Raspberry Pi is shut down properly. And you can also reconnect the power supply after a forced power failure to achieve a remote power-off and restart operation. Once it was setting up, you don't need to press power button to boot up your device which is very suitable for smart home application scenarios.
I was using the ups for a long time on the version 3 and then decided to update since I saw on the github there was a newer version.
While upgrading everything went great I had a successfull message at the end and then the UPS powered off by itself.
After that, the pi would want to turn on anymore. I see the red light on the ups on and one bluelight slowly flashing (I don't have the batteries pluged in at this point).
I tried to reflash the firmware by powering the pi and the ups seperatly, but the pi cannot communicate with the ups I get a I/O error.
Traceback (most recent call last):
File "OTA_firmware_upgrade.py", line 51, in <module>
bus.write_byte_data(0x18, i + 1, data[i])
File "/home/pi/.local/lib/python3.7/site-packages/smbus2/smbus2.py", line 455, in write_byte_data
ioctl(self.fd, I2C_SMBUS, msg)
OSError: [Errno 121] Remote I/O error
Traceback (most recent call last):
File "upsplus_iot.py", line 36, in <module>
aReceiveBuf.append(bus.read_byte_data(DEVICE_ADDR, i))
File "/home/pi/.local/lib/python3.7/site-packages/smbus2/smbus2.py", line 433, in read_byte_data
ioctl(self.fd, I2C_SMBUS, msg)
OSError: [Errno 121] Remote I/O error
I used a voltmeter and checked the voltage between the pins that connect the raspberry pi and the ups and I get only 3V.
Any one have an Idea what I can do with that? it's a quite deceiving experience.
Sorry about the post, I finally figured out... It was a series of coincidences.
First, I didn't know that the first time you power it after the update, it doesn't want to power up on batteries only, I guess it's because it doesnt know the voltage yet.
Second, my nuts that held the raspberry pi were loose so the connection wasn't correctly given to the pins.
After securing the nut and re-plugging the usb-c power supply it works and I'm able to communicate with the ups again.
gabrielbergeron
commented
3 years ago
I was using the ups for a long time on the version 3 and then decided to update since I saw on the github there was a newer version.
While upgrading everything went great I had a successfull message at the end and then the UPS powered off by itself. After that, the pi would want to turn on anymore. I see the red light on the ups on and one bluelight slowly flashing (I don't have the batteries pluged in at this point).
I tried to reflash the firmware by powering the pi and the ups seperatly, but the pi cannot communicate with the ups I get a I/O error.
I used a voltmeter and checked the voltage between the pins that connect the raspberry pi and the ups and I get only 3V. Any one have an Idea what I can do with that? it's a quite deceiving experience.