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by tetravalence
Sat Sep 22, 2012 4:18 am
Forum: Other projects
Topic: Touch Screen inversion
Replies: 6
Views: 3196

Re: Touch Screen inversion

In Debian/Raspbian,

Code: Select all

sudo apt-get install libx11-dev libxext-dev libxi-dev x11proto-input-dev
by tetravalence
Sat Sep 22, 2012 1:19 am
Forum: Other projects
Topic: Touchscreens for Raspberry Pi
Replies: 105
Views: 185597

Re: Touchscreens for Raspberry Pi

In Debian/Raspbian,
sudo apt-get install libx11-dev libxext-dev libxi-dev x11proto-input-dev
by tetravalence
Fri Sep 21, 2012 5:00 am
Forum: Other projects
Topic: Portable Pi with Touchscreen
Replies: 20
Views: 19193

Re: Portable Pi with Touchscreen

Here's the general idea until I find the time to write a detailed guide. On the hardware side: Soldered the TSC2007 IC onto a TSSOP-to-DIP adapter Soldered a 4-wire-ribbon-to-SMT adapter to the DIP adapter and inserted the ribbon Soldered wires for 3.3V, GND, SDA, SCL, and PENIRQ (can be connected t...
by tetravalence
Wed Sep 19, 2012 7:35 pm
Forum: Other projects
Topic: Touchscreens for Raspberry Pi
Replies: 105
Views: 185597

Re: Touchscreens for Raspberry Pi

I have a touchscreen up an working using adafruit's 3.5" tft and a touch panel I found on DigiKey, using a TSC2007 IC from Texas Intruments for the I2C interface with the Pi. I have a thread here ( http://www.raspberrypi.org/phpBB3/viewtopic.php?f=41&t=17819 ), so take a look and if it looks like wh...
by tetravalence
Wed Sep 19, 2012 7:24 pm
Forum: Other projects
Topic: Portable Pi with Touchscreen
Replies: 20
Views: 19193

Portable Pi with Touchscreen

Hello, I'd like to share my progress on a portable Raspberry Pi system with a 3.5" display and a 4-wire resistive touchscreen. The interface is all through I2C, leaving the USB ports open. Everything runs off of a single 12V power supply, with 12V going directly to the display and 5V to the Pi throu...
by tetravalence
Sun Sep 16, 2012 7:43 am
Forum: Other projects
Topic: Raspberry Pi as a graphing calculator
Replies: 5
Views: 15334

Re: Raspberry Pi as a graphing calculator

Instead of the TI-84 emulator, you may also want to try out the sympy Python library. That'd require using a keyboard, however.
by tetravalence
Tue Sep 11, 2012 7:21 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO and interrupts from kernelspace
Replies: 7
Views: 12551

Re: GPIO and interrupts from kernelspace

hexelpdkk, as far as I can tell, these functions are working. I'm currently writing a kernel module using the majority of these and haven't encountered any problems.
by tetravalence
Mon Sep 10, 2012 4:28 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c device doesn't show up in i2cdetect
Replies: 9
Views: 32056

Re: i2c device doesn't show up in i2cdetect

Just thought I'd let you guys know that I got it working, it turned out to be a couple of bad joints (GND and SCL on the IC). It's a TSSOP chip that I hand-soldered to a DIP adapter, so issues were to be expected :lol: Thank you! The new output of i2cdetect 0: 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- ...
by tetravalence
Sat Sep 08, 2012 9:13 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c device doesn't show up in i2cdetect
Replies: 9
Views: 32056

i2c device doesn't show up in i2cdetect

Hello, I recently connected an i2c device, a TSC2007 IC from TI, to my RasPi, but it is not appearing in i2cdetect. Here is the output of 'i2cdetect 0' 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- --...
by tetravalence
Fri Aug 31, 2012 7:43 pm
Forum: OpenGLES
Topic: EGL display not pixel precise
Replies: 4
Views: 2206

Re: EGL display not pixel precise

Perfect, that works just how I wanted it to! I really appreciate the help :D
EDIT:
Actually, one more question. If I wanted a cursor, my guess is that I'd have to render it myself, correct? The overlay appears to cover it up.
by tetravalence
Fri Aug 31, 2012 6:26 pm
Forum: OpenGLES
Topic: EGL display not pixel precise
Replies: 4
Views: 2206

Re: EGL display not pixel precise

Sure, here's the code taken from /opt/vc/src/hello_pi/hello_triangle/triangle.c (I took out some of the members of the state struct used by the demo that aren't involved in this process). graphics_get_display_size appears to be the function in question. typedef struct { uint32_t screen_width; uint32...
by tetravalence
Fri Aug 31, 2012 7:38 am
Forum: OpenGLES
Topic: EGL display not pixel precise
Replies: 4
Views: 2206

EGL display not pixel precise

Hello, I am outputting via RCA to a small 320x240 display, running the triangle.c test suite and my own OpenGL project ported to OpenGL ES. In both cases, the display automatically detected and created by EGL to fill the whole screen is 720x480, while manually providing the proper dimensions only dr...
by tetravalence
Sun Jul 22, 2012 9:40 pm
Forum: Other projects
Topic: Using a raw TFT LCD panel
Replies: 5
Views: 14546

Re: Using a raw TFT LCD panel

I was actually just looking at their panels, they look like they'd save me a ton of hassle. Do you know if there's any way to power the LCD and the Pi from the same power source? Or power the LCD directly from the Pi?
by tetravalence
Sat Jul 21, 2012 9:57 pm
Forum: Other projects
Topic: Lego minecraft box
Replies: 2
Views: 2950

Re: Lego minecraft box

That looks really cool! How stable is it?
by tetravalence
Sat Jul 21, 2012 6:47 pm
Forum: Other projects
Topic: Using a raw TFT LCD panel
Replies: 5
Views: 14546

Re: Using a raw TFT LCD panel

I'm not sure about whether this would work, but I found an LCD controller with DVI input. HDMI to DVI cables are easy to find. However, I'm not sure if it could be connected to the panel I found. This dearth of information is driving me nuts. Anyway, here's the controller: http://www.digitalview.com...
by tetravalence
Thu Jul 19, 2012 8:17 pm
Forum: Other projects
Topic: Using a raw TFT LCD panel
Replies: 5
Views: 14546

Using a raw TFT LCD panel

Hello, I'm new to the Raspberry Pi Forums, but I joined because I have questions about using a TFT LCD display I found online. Here is a link to the display: http://www.newhavendisplay.com/new-capacitive-touch-tft-nhd50800480tfatxictp-p-5018.html I've come up with a few potential methods, and I need...

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