Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication. Details, datasheet, quote on part number: ADS The ADS, ADS, and the new ADS converters all are designed for specific touch screen. ADSE ti ADS, Touch Screen Controller. FEATURES. q 4-WIRE TOUCH SCREEN INTERFACE q RATIOMETRIC CONVERSION q SINGLE SUPPLY.

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Click here to register now. I’ll try working on it a bit more later today, but your response raised a few questions more questions: By continuing to use this site, you are consenting to our use of cookies. I’m stuck trying to figure out this controller.

ADS Datasheet PDF – Texas Instruments

This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Thread starter Micro Start date Apr 9, I found that the touch panel tilts slightly so linear calibration isn’t the best way to go.

The first thing you should be doing is displaying the raw data Readx and Ready Well, I’m stuck with this controller for now, heh. If I’m not mistaken, how it works is read the X and Y and using if statements check to see if it falls into a certain range and then use one of the map functions that contains an offset for the corresponding range?


I have never used this touch controller I make my own Welcome to our site! In general what is the process used with the five offsets?

Hey guys, I could use a bit of help. For example, if I read infor the center when it is supposed to beMicro New Member Apr 9, This makes it a little more linear.

ADS7843 Touch Screen Controller

I have tried to break dataheet apart a bit and understand it: Do I just add or subtract in this case the amount it is off by, and for areas close to the center use that offset and for the corners use their respective offsets? Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

Ouch, I can see from the above picture how mechanically the touch screen can sometimes not be properly be placed over the LCD screen, thanks for clearing that up as well. Also, thank you for clearing up the A2-A0, looking acs7843 at the data sheet it makes a bit more sense.

ADS Touch Screen Controller | Mbed

I have 4 calibrations 5 point calibration If your touch panel doesn’t tilt you can get away with 3 points What I do is write the value’s daatasheet the screen dead center so I can see Then touch everywhere and write down the figures. This give the best results Replacement Transformer Started by ncag Today at 7: Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Micro New Member Apr 10, To participate you need to register.


Calibration is a bit odd. I’ll also be sure and wait ms before reading the values.

4-wire Touch Screen Controller

You must log in or register to reply here. One other thing when you press the touch wait mS before you read x and y, the ads may do this for you, as the reading settles and changes position.

Thanks for the response Ian I really appreciate it. I calibrate the dead center then each quarter in turn You need a map function to work out the TRUE pen position map xLeft, eatasheet, xcentre,ycentre ; return point 0,0 tomap xcentre,ycentre, xright, yTop ; return pointto ,0 map xLeft, yBottom, xcentre,ycentre ; return point 0, tomap xcentre,ycentre, xright, ybottom ; return pointtoThis will give a good linear reading.

Once you get those coordinates what exactly dataeheet you do with them? I then check to see which map function I should use and if falls within a certain range I use the center offset that I have stored subtracts 40 and 30?