I'm interested in obtaining touchscreens for a project which are preferably square shaped in overall dimensions with as thin a border as possible since I want to put them together. Do you guys have any suggestions of good places to look for low cost solutions? I don't really care about the quality of the image, touch sensitivity, yet I'm just looking for some basic capable options to think on. I'm also open to all size options and maybe even custom sizes since I'm not sure yet which size I want.
I'm also interested in places with a variety of touchscreens in different sizes that can be easily used in DIY projects.
Not sure, you MAY end up with some "surplus" undocumented LCD.
Since I just spent afternoon rearranging my 16 bit data bus wires I would make ONE suggestion - stay away from ANY parallel data bus!
Most vendors are not too open to tell you how you connect to their hardware.
Go for SPI /I2C connections.
So far nobody has seriously compared LCD display speed update using parallel versus serial connection.
Not sure, you MAY end up with some "surplus" undocumented LCD.
Since I just spent afternoon rearranging my 16 bit data bus wires I would make ONE suggestion - stay away from ANY parallel data bus!
Most vendors are not too open to tell you how you connect to their hardware.
Go for SPI /I2C connections.
So far nobody has seriously compared LCD display speed update using parallel versus serial connection.
By square I mean equal length on all 4 sides or as close to it as possible when it comes to overall dimensions. I'm mostly looking for ones of side length size around 2-10in although I'll might be interested in any size since they seem so hard to find. Virtually anything I look up has to be landscape format.
jarwulf:
By square I mean equal length on all 4 sides or as close to it as possible when it comes to overall dimensions. I'm mostly looking for ones of side length size around 2-10in although I'll might be interested in any size since they seem so hard to find. Virtually anything I look up has to be landscape format.
Not to worry about the format , most "libraries" can swap between landscape and portrait.
The smaller LCD I have with SPI is about 23/4 x2 inches. Not really a square .
I am still working on the 16 bit data bus monster and it will take me some time to modify my class for serial connection.
I am assuming you are not interested in "shield" , but be aware than (some) libraries can be build for specific hardware pins configuration AKA shield only. ( That was the main reason I elected to roll my own ).
But if you wire the LCD yourself you be OK.