With raspberry pi1 (the 2011 model) the screen are working but not with omega that not recognize them. I will probably resell my omega and various accessories because the assistance is not very helpful

Hi Andrea Take a look at: https://developers.google.com/calendar/overview Personally i prefer python or php. You can use crontabs to trigger the 30min event. https://docs.onion.io/omega2-docs/running-a-command-on-a-schedule.html I don't really have any expirence with the calendar api, so I can't give you an example. But I hope this may give u an idea on how to start.

I get a following error: Traceback (most recent call last): File "bitcoin.py", line 27, in <module> a=json.loads(jsfile) File "/usr/lib/python2.7/json/init.py", line 339, in loads return _default_decoder.decode(s) File "/usr/lib/python2.7/json/decoder.py", line 364, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded I modify the line27 - but the error is same: Traceback (most recent call last): File "bitcoin.py", line 27, in <module> a=json.loads(jsfile)[0] Can you help for me, how could I fix it? Thanks a lot!

@Zachary-Haslam We have a guide to this setup in our Starter Kit experiments. Check out https://docs.onion.io/omega2-starter-kit/starter-kit-controlling-an-lcd-screen.html to learn how to read a 1-Wire temperature sensor and display it on a 16x2 LCD screen! Gabe

It is probably possible, but SPI on the MT7688 has enough quirks, along with the current state of the software stack, that it may be quite a challenge to tackle this in a pioneering way, unless someone has already gotten your display or a conceptually simpler one working. An idea you could consider would be using an Arduino (or bare ATmega or some even cheaper MCU) to act as a serial-to-SPI bridge, such that you could just write data out the serial port and the Arduino would turn that into commands for the display. Wasteful of hardware perhaps, but if it transforms the project into a more familiar one it could be beneficial. Note that in doing it that way you also abstract out the Omega entirely - you can probably run your program on your development machine itself displaying through the Arduino while you work out the details, and only bother with cross compiling and installing it on the Omega module occasionally as a check. You also end up able to replace the Omega module with whatever platform seems interesting next year.

Thanks. Pull request created.

If you take a look at the github source of the i2c-exp-driver, there is a subdirectory called bmp2lcd. In there is the javascript on how to create the image (looks like a simple packed binary stream).

@Kit-Bishop Sounds great! I'm still debating between the size / resolution. Ideally, the screen and the cube itself should be created for someone who is from 13 to 18+ years old and held by their hands a la Rubix Cube. This should be a fun project! I'll keep you posted!

Hello With i2cset it replies incorrect mode i can use mode b or w ... But i think it's normal ... i've seen this option several times but not very often . i'm using this process to initialize LCD crystal 2x16 using a pcf8594 I2C 8bit expander port : Tech Docs So i've tried orther method using python without smbus import... Peripheri.i2c do that. I can only turn on/off backlight ... Thanks for helping .... Oméga it's cool !!¡ a bit of incomplete code ... #!/usr/bin/python import i2c import pyOmega pyOmega.mSec(100) #Open i2c-0 controller chip = i2c.I2C("/dev/i2c-0") ##LCD PROC def lcd_reset(): chip.transfer(0x27, [i2c.I2C.Message([0xFF])]) pyOmega.mSec(20) chip.transfer(0x27, [i2c.I2C.Message([0x83])]) chip.transfer(0x27, [i2c.I2C.Message([0x03])]) pyOmega.mSec(15) chip.transfer(0x27, [i2c.I2C.Message([0x83])]) chip.transfer(0x27, [i2c.I2C.Message([0x03])]) pyOmega.mSec(5) chip.transfer(0x27, [i2c.I2C.Message([0x83])]) chip.transfer(0x27, [i2c.I2C.Message([0x03])]) pyOmega.mSec(5) chip.transfer(0x27, [i2c.I2C.Message([0x82])]) chip.transfer(0x27, [i2c.I2C.Message([0x02])]) pyOmega.mSec(5) def lcd_init(): lcd_reset() lcd_cmd(0x28) lcd_cmd(0x0C) lcd_cmd(0x06) lcd_cmd(0x80) lcd_cmd(0x80) def lcd_cmd(xcmd): print xcmd lcd_cmd(0x28)