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1  Using Arduino / Displays / Re: LCD display with ILI9341 driver on Arduino on: October 15, 2013, 03:01:44 pm
I'm also trying to get this 2.2 TFT to work, with little sucess.

Can someone who has got this to run just go through and clarify a few points:

Arduino type used
Library used
Which pins to connect : SD0(MISO), LED, SCK, SDI(MOSI), D/C, RESET, CS, GND, VCC

If you used a level converter to go to 3.3v, and what pins need to be 3.3v or is it all of them?

I've got an uno and no level converter chip.

Cheers if you can lock this down for me smiley
2  Using Arduino / Project Guidance / Re: Turn on Desktop PC with wireless Arduino on: June 20, 2011, 07:25:47 am
What would be a cheap solution to a simple wireless on/off link?

And the arudino was to extend the project in the future, so you could activate it via phone, internet or close range wireless, building in these things as it went along.
3  Using Arduino / Project Guidance / Re: Turn on Desktop PC with wireless Arduino on: June 18, 2011, 04:57:31 am
Interesting product that power switch tail, but I'm in the UK - seems to be a US device? I was thinking of rf on/off power sockets at one point, but they are quite expensive - I have most of the stuff here for building an arduino version apart from the relay and project box. Maybe I will get some RF controlled sockets, as with multiple sockets I could also have remote control of other sockets in the house as a bonus.
4  Using Arduino / Project Guidance / Re: Turn on Desktop PC with wireless Arduino on: June 17, 2011, 04:26:45 pm
Not really, as any setting for it fails to work. RTL8139 does not support WOL RTL8139A does support WOL. At any rate, WoL requires a very specific set of hardware conditions to work which it seems for what I have doesn't allow it. For some it is a few clicks and simple, for others the setup just doesn't work because of differing hardware.  Don't take this the wrong way but I'm not a beginner with a PC, so I can read up about my network card and how to enable WoL and troubleshoot sending magic packets through ports and forwarding on the router. It seems like WoL is impossible with my current setup, from MB/Ethernet card/Router/PSU or other. It's not like I haven't tried.

Besides, I'd prefer to build a one size fits all solution that can be wired in and out of any PC that I have or will get in the future. Anyone know of a relay that would be appropriate for the task?
5  Using Arduino / Project Guidance / Re: Turn on Desktop PC with wireless Arduino on: June 17, 2011, 02:57:37 pm
MB Asus P4i65G

Northbridge   Intel i865P/PE/G/i848P rev. A2
Southbridge      Intel 82801EB (ICH5) rev. 02

Network integrated to MB:

Realtek RTL8139/810x Family Fast Ethernet NIC

Router: Belkin F5D7633-4 Firmware Version    1.00.25

But I don't think that will help any. WoL is such a PITA with little to no reliability between hardware that when it doesn't work, it doesn't work for good it seems.
6  Using Arduino / Project Guidance / Re: Turn on Desktop PC with wireless Arduino on: June 16, 2011, 03:00:31 pm
I'd thought about the wireless doorbell option, but had thought that the circuitry would 'get in the way' - the bell tone isn't continuous, so I couldn't do the switch off option. I guess with investigation there might be a part that is simply energised dependant on the bell push. Also, I was thinking of possibly extending the system with an old phone in the future, so I could dial in a switch on signal, wired to the vibrator or speaker in the phone I guess. Just throwing ideas around until I get a decent idea for remote switch on. And rf remote kits - as far as I can tell they are overly expensive for this kind of job, unless anyone knows of a cheaper alternative?
7  Using Arduino / Project Guidance / Turn on Desktop PC with wireless Arduino on: June 16, 2011, 06:05:33 am
Ok, just before I get going on such a project I'm going to check I've got the idea right, but I'm not sure about components.

Aim: To remotely turn on PC within a certain radius - pretty much turn it on from another room. WoL has failed utterly - must be a motherboard / router issue or other, but it cannot be woken via magic packets.

Goal: Wire up a relay to the power switch. This is controlled by an arduino (on stripboard in the final build) which receives input from an RF 433MHz RX module. The other TX module will be connected to another arduino on stripboard on a project box with a button.

Use: Press the button, and the RX/TX sends it to the PC side (with a suitable code to avoid intermittent interference setting it off), where the arduino energises the relay, turning the power switch on and booting the PC. Continual hold over the button (5 secs) would also perform a hard shutdown of the PC, allowing for crash full reset and reboot should the need arise.

What sort of relay would I need for such a project? And does this sound like the best way of going about it?

Thanks for any input.
8  Using Arduino / Microcontrollers / Re: Some errors in burning bootloader on: March 06, 2011, 06:12:12 pm
I was doing this the other day, and began hunting around for the right resistor, or was thinking about doing something with the software - putting a delay in somewhere as I read. Then it hit me. Take out the chip and put it into a spare DIL socket, and snip the reset pin on the socket. It's now my 'bootloading' setup. Worked like a charm.
9  Using Arduino / Microcontrollers / Re: Unable to upload to AtMega328 on breadboard on: March 03, 2011, 05:04:45 pm
I tried doing just what you are attempting and failed.  Resorted to putting the chip in an arduino, uploading the sketch, popping it out and putting it into the breadboard circuit.  That worked.  I'm curious to see if anyone has a solution that actually works to upload a sketch from a chipless arduino directly onto a breadboard mounted chip.

I built something for that a while ago, but doesn't require taking the chip out of the arduino:

http://arduino.cc/forum/index.php/topic,8084.0.html



I like that as well.  How is the switch connected to the socket?   I have several sockets coming from Sparkfun, So I'd probably like to give this a try.






It was actually a little hellish with my thick fingers, but I drilled a hole through the side of the DIL socket, removed the pin from the socket and repositioned it through the hole and connected it to a pin on the switch which was glued there. Then from the other switch contact I set up a winding contact under the socket and to an added pin to finally connect back underneath the DIL socket pin.

I'm sure there is a market for a DIL socket with little DIP switches along the sides, breaking contacts if needed? I've found 2 uses for such a thing already - this one, and just today disabling the reset pin for burning bootloaders onto blank atmega328's.
10  Using Arduino / Microcontrollers / Re: Unable to upload to AtMega328 on breadboard on: March 03, 2011, 06:50:09 am
I tried doing just what you are attempting and failed.  Resorted to putting the chip in an arduino, uploading the sketch, popping it out and putting it into the breadboard circuit.  That worked.  I'm curious to see if anyone has a solution that actually works to upload a sketch from a chipless arduino directly onto a breadboard mounted chip.

I built something for that a while ago, but doesn't require taking the chip out of the arduino:

http://arduino.cc/forum/index.php/topic,8084.0.html

11  Using Arduino / Microcontrollers / Re: Using an arduino to burn a bootloader onto a atmega168 on: March 03, 2011, 06:35:46 am
I was having similar problems but disabling auto reset solved it. I snipped a pin of a DIL socket and put the 328 in that, then the socket in my Duemilanove, worked fine burning the bootloader onto a blank 328. I'll never need to buy a bootloaded chip again - they are much more expensive!
12  Using Arduino / Project Guidance / Re: University project needs help: Serial Communication between arduinos on: February 04, 2011, 03:09:16 pm
Do you really need serial comms for this at all? Why not have a 'voltage line', that a smart block can pickup via an analog input, then set the right pins for a voltage divider setup for an output? You don't need many pins for other things so you've got them spare.
13  Forum 2005-2010 (read only) / Syntax & Programs / Re: stop() functio on: June 28, 2010, 03:52:07 am
Is the unexpected behavior that it just drives forward no matter what?

That's what would happen if stop() didnt do anything, but stopmotors() might actually call some code that does something.

does stopmotors() call some kind of delay or something, enabling a left turn and other behaviour?
14  Forum 2005-2010 (read only) / Interfacing / Re: Arduino + Visual Basic on: June 13, 2010, 04:21:29 am
Wouldn't this essentially be rewriting the IDE in VB? Not saying this is a bad idea, but it's a lot of work when the IDE is already there. For a custom job I think you might be able to call avrdude from VB, but you'd need to understand it properly in order to do it right.
15  Forum 2005-2010 (read only) / Interfacing / Re: RJ45 pinout problem on: October 24, 2010, 07:53:04 am
measure resistance with it, if it's anything less than infinity it's a contact
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