GrovePi+ kit board: RGB LCD display

Hi, I have a very odd thing happening with the GrovePi+ kit board, when trying to use the RGB LCD display with the example program. It starts to count down to sleep, then suddenly switches to counting up, and finally crashes when it gets to about 140.

I have re-installed everything from scratch 3 times, with same result. The button, LED and other digital items test fine, and there is nothing else connected to the I2C bus. I have updated the firmware, and I made sure I have a power supply capable of 2.5 Amp.

Here is the terminal screen result:

pi@rpi-grove:~/GrovePi/Software/Python/grove_rgb_lcd $ python

Traceback (most recent call last):

File “”, line 133, in

setText_norefresh(“Going to sleep in {}…”.format(str©))

File “”, line 119, in setText_norefresh


IOError: [Errno 121] Remote I/O error

Any help would be greatly appreciated!

Tks, AB

Hi there:

I did a test, it is normal, please attach your hardware connection screenshot, and firmware update address, environment configuration, so that my side can handle your problem in time