Actually in the library where you send the data in parallel, then just change that line to an I2C command.
Or on ebay. 16x2 display + i2c module £2.50, if you're prepared to wait for it.
And most of the ebay ones can be driven using RPLCD using both the gpio parallel method and the i2c modules.
It is not weird to find similar designs, these are not inventions, there are component manufactures and designs base on the existing components, but usually if somebody wants to make a product, he must design it himself instead of a modular header connection.pcmanbob wrote: ↑Tue May 07, 2019 9:57 pmAnd most of the ebay ones can be driven using RPLCD using both the gpio parallel method and the i2c modules.
Thank you for the notes. the last issue can be solved by placing some Vias which I do regularly, but not for this design.Brandon92 wrote: ↑Fri May 10, 2019 2:43 pmI have a couple of advise for your design:
- I would place above R5, R7, R8 also a resistor and mark them as "np". So there is an option to change the adress of IC1, if you need more then one.
- I would place a small electrolytic capacitors as well on that board
- I think you can better increase the pull-up resistors to a higher value. If you are using more than one of this kind of board. The resistance could become eventually very small.
- I saw that you place the + of the decouple capacitor close tho the IC1, what is a good thing. But the - connection to the IC1 is not a direct way. So it will not function as good as you would like to see.
No problem. I know that it can be solved by a couple of Vias . But the question is more why you didn't ithesam_m wrote: Thank you for the notes. the last issue can be solved by placing some Vias which I do regularly, but not for this design.
I realized it is not that much important for this circuit, but anyway it is a good habit to always do it, although it may not seem necessary. your point is true