Search found 107 matches

by Random
Sat Dec 06, 2008 6:34 pm
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

I've finally had some success with the '30: http://farm4.static.flickr.com/3236/3088364166_c985bb0b25.jpg I'm using 15fps, RGB, 128x96 (same resolution as the LCD, which is the $1 SF sell), no sync codes, everything else at default. My microchip is an STM32 F103 VBT6, a Cortex-M3 ARM. I'd recommend ...
by Random
Sun Nov 30, 2008 4:19 am
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

Just to clarify, the comment about 5V refers to the input signals, I wouldn't want to try running the thing on 5V VCC. Your best bet is a 2.8V VCC and a logic level converter or a microchip running at 2.8V, but 3.3V works for VCC and 5V or below works for the input signals. The screen may be damaged...
by Random
Sat Nov 29, 2008 3:49 pm
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

Go ahead, I'm busy with other projects at the moment so haven't been playing with it, so that bouncy ball demo is as far as I got.
I might work on it some more later, since I've got a few of them sitting around and they are really easy to drive.
by Random
Fri Nov 21, 2008 10:08 am
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

A lillypad really isn't appropriate for this camera, you'd need both something considerably more powerful and a fair bit of programming know-how. I'd advise getting a normal small and cheap digital camera and connecting the lillypad to its remote shutter so the lillypad tells it to take a photo ever...
by Random
Thu Nov 20, 2008 10:05 am
Forum: SparkFun Product Questions
Topic: HMC6352 Providing Wrong Data
Replies: 6
Views: 1591

How close to the laptop was the compass module? I know it seems a remote possibility but this was exactly the problem I was having with my compass module - it returned invalid results within a small range (in my case 150 to 220 degrees) and in the end it turns out it was because of a fixed magnet ne...
by Random
Wed Nov 19, 2008 6:01 pm
Forum: SparkFun Product Questions
Topic: HMC6352 Providing Wrong Data
Replies: 6
Views: 1591

rather than RF there's probably a strong magnetic field or an actual magnet nearby - try taking just the arduino, some kind of output and the hmc itself outside away from anything and power it off a battery, see if you get the same problem.
by Random
Sat Nov 01, 2008 4:01 am
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

Thanks for the offer but I think I've got the I²C all working now, just gotta try and read the data itself!

I've got the '30, which is the smaller 640x480 max one, which Twingy has already got pictures from so I probably can't be of much help in terms of registers etc if I get images from it.
by Random
Fri Oct 31, 2008 11:19 am
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

Update: I made an LA using my parallel port ( tfla ) and hooked it up to SDA and SCL. I instantly noticed that the address was shifted by one! silly mistake, the but stm32 library asks for a 7bit address - turns out it wants a shifted 7bit address! (I wish the documentation would mention this kinda ...
by Random
Fri Oct 31, 2008 8:04 am
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

I got a clock pulse coming out of my ARM, and while I can't measure the frequency it is at least the right duty cycle so with any luck it should also be 6MHz. (I only have a DMM and no oscope yet). The I²C lines are pulled to 2.8V and since it's all open-drain that should mean my ARM (3.3V) happily ...
by Random
Thu Oct 30, 2008 5:12 am
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

I've got two voltage regulators giving 1.50V and 2.79V for the right power supplies, so that should be fine, but I was concerned about the SDA and SCL lines. I guess I'll just have to try it and see.

Thanks for the information!
by Random
Wed Oct 29, 2008 6:03 pm
Forum: New Product Ideas
Topic: TCM8240MD connector and example
Replies: 463
Views: 241571

I've got this camera on a PCB with a 2.8V reg, a 1.5V reg, pullups on SDA, SCL and RESET and all the pins going to a 20 pin connector that leads to an ARM STM32 F103 VBT6, which is running at 72MHz. While the ARM has a DMA controller I can't see how to use it to clock in data on an input port, it se...
by Random
Sun Oct 26, 2008 3:13 pm
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

I'm in the middle of reformatting my PC (I'm on my laptop at the moment) so I don't have the code to hand but will post it when my PC's up and running again. It's pretty simple though - check Skylark's code for the basics, but you just need to setup the Arduino to talk to the screen over SPI, wire i...
by Random
Sun Oct 26, 2008 8:10 am
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

If the computer was streaming data the arduino could display it, but would would be the point of the arduino? You'd be better off with just the FT232RL chip over USB, as Skylark did. On the other hand, if you wanted the Arduino to control it, it could work - but again you'd be basically limited to s...
by Random
Sun Oct 26, 2008 6:45 am
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

The Arduino can't hold a full screen in its RAM (or even its ROM) but is quite capable of writing to it, so generative patterns work fine - I would try using a text library and storing where characters should go or something, for instance. Alternatively you could store just three bits per pixel (RGB...
by Random
Sat Oct 25, 2008 10:32 am
Forum: SparkFun Product Questions
Topic: Connecting the LTD222QV-F01 2.3" QVGA LCD (LCD-08843)
Replies: 101
Views: 50100

I've been playing with the small one and with Skylark's assistance have it controlled by an Arduino (ATmega168 8bit 16MHz):


Image

the pitch on the small one is crazy hard to solder!