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LCD touchscreen possibility for reprap firmwares

I thought it might be good to use an lcd with touch screen for some of the sd card firmwares coming out. I've started working on optimizing an lcd driver, and hope people will start considering lcd...

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Re: LCD touchscreen possibility for reprap firmwares

Wow! What an impressive thing for such a tiny microcontroller! How much CPU cycles does this thing need? How much of these CPU cycles are required to be realtime? What happens when the ATmega is...

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Re: LCD touchscreen possibility for reprap firmwares

LCD uses 8 data pins and 4 other pins to control the lcd. but it works in 16 bit mode, 8bit mode and spi mode, spi would also reuse some pins because of addressing. I will look into pin count for that...

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Re: LCD touchscreen possibility for reprap firmwares

I like the idea of having a nice touch screen to control your printer. In fact, I already bought such a display for that purpose. The graphic library for that display seems quite slow, something like...

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Re: LCD touchscreen possibility for reprap firmwares

The memory is quite low.The resources required and cpu cycles will be the same as using a 4 line display currently. many serial (not spi serial) displays only communicate at 9600baud, and require a...

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Re: LCD touchscreen possibility for reprap firmwares

here are time tests take by this method: unsigned long timetest=micros(); //tested function (here its the meat) //end of function timetest=micros()-timetest; Serial.print("function name :");...

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Re: LCD touchscreen possibility for reprap firmwares

Quoteatmega1280 has pins to spare That's true, but SMT chips are currently considered to be a no-go for do-it-yourselfable electronics. The ISP option looks good, though, just one pin for a device...

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Re: LCD touchscreen possibility for reprap firmwares

For comparison, the slowest display I have working is a 4x16 with i2C connection. I can update in less then 10ms. I update the screen every second. What I didn't register the first post is, that your...

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Re: LCD touchscreen possibility for reprap firmwares

thanks but the display is 262,000 color 18bitmax. it is running in 8bit mode. as you scratch your head, let me just tell you all the wasted rewrites the normal drivers send. i put great effort into...

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Re: LCD touchscreen possibility for reprap firmwares

When you get this timings with a colored display I really have to have a look at it. Must be some good optimizations. The display I have is this: https://github.com/watterott/MI0283QT-Adapter the...

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Re: LCD touchscreen possibility for reprap firmwares

i will look into spi later on, but if you send me your address name and firmware you will work on, i will purchase and mail out the display model have specifically used to you. This is a personal...

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Re: LCD touchscreen possibility for reprap firmwares

You can check this out, [shieldlist.org], is pretty much fast, I think.You'll just use 2 pins and you leave the the the core process loosed. Or you can check every kind of shield there are available...

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Re: LCD touchscreen possibility for reprap firmwares

there currently are some issues with using spi, spi forces the entire data line to be written 1 bit at a type, there are a few solutions i would like to discuss. Also i am open to any other solution...

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Re: LCD touchscreen possibility for reprap firmwares

Ok, I've already given out a display to repetier , and as per his suggestion he wanted high speed square fill boxes, I am still working on changes to display touch driver, and to the line draw...

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Re: LCD touchscreen possibility for reprap firmwares

ok, updated again, this update cleans up lcd code and places it into lcdDriver.h, rest can be executed from anywhere. working on the same for touch driver, version is now 0_3 also just add lcdDriver.h...

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Re: LCD touchscreen possibility for reprap firmwares

Great work, jamesdanielv. To be honest, I'm wrestling with myself wether I should take your offer to fit the code into Teacup. But then I have Gen7 electronics only (a whole bunch of them), which...

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Re: LCD touchscreen possibility for reprap firmwares

well it is almost completed. the display part is done, just need to work out a few things for touch functions. For display how is 1 spi cable, and 1 select pin. also what do you guys think of the...

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Re: LCD touchscreen possibility for reprap firmwares

Excellent! Now, if you could post the schematics of this daughter board, I'd like to make an extension board for Gen7 making this display possible. Gen7's extension board provides 3.3V already. Didn't...

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Re: LCD touchscreen possibility for reprap firmwares

Sorry - Kind of hijacking the thread... I highly appreciate the effort you have put into this. 7 years ago when there was no iPhone I made a touch-screen remote control for my course project. While...

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Re: LCD touchscreen possibility for reprap firmwares

thanks. touch screens are quite common in surplus and purchased on the following sites for example [wide.hk] [adafruit.com] [www.mouser.com] [www.nuelectronics.com] it is another option that is out on...

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Re: LCD touchscreen possibility for reprap firmwares

Traumflug: "Didn't I read somewhere you also need two analog pins for the "touch" part of this display?" yes 2 adc's are currently needed. 4 pins are required for the touch panel but 2 pins are tied...

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Re: LCD touchscreen possibility for reprap firmwares

alright, I'm getting close. here is the parts list for those that are interested. (1) 74164 7 diodes 2 200ohm resistors 3 100ohm resistors 4 .01uf capacitors i have two ways to use the spi, and i am...

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Re: LCD touchscreen possibility for reprap firmwares

I have started a wiki page here [www.reprap.org] and here is the draft schematic. also the code should be posted on [www.thingiverse.com]. It will be in git as well shortly. This is not the final...

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Re: LCD touchscreen possibility for reprap firmwares

Looks pretty simple. That's good!

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Re: LCD touchscreen possibility for reprap firmwares

It has been a while since I last updated. I'm thinking about adding in 2 more discreet logic chips. Another 74164, and a 4066 (a 4 channel analog switch) this allows the ADC to be directly controlled...

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Re: LCD touchscreen possibility for reprap firmwares

I don't think the lcd driver can have control over the adc. In Repetier and Marlin the ADC is checked in a interrupt loop, external adc requests would destroy the temperature reading. If I understand...

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Re: LCD touchscreen possibility for reprap firmwares

it is probably best the daughter board perform its own adc anyway, with restrictions to a single layer pcb that can be reprap made and mass produced at the same time, complexities arise with noise....

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Re: LCD touchscreen possibility for reprap firmwares

That should give you full control for the driver:-) One more thought. The display itself has pins to connect to a arduino. I think you will make a doughter board where the display is put on. Could you...

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Re: LCD touchscreen possibility for reprap firmwares

yeah, i know we would go there ;)

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Re: LCD touchscreen possibility for reprap firmwares

following

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