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2007-02-20 by codsniper_net
--- In AVR-Chat@yahoogroups.com, Don AE5K wrote: > Hi Roger, Mats & Kristian... > > Your "bad english" is better than most native speakers ;-) > > Getting out my little "cheat sheet" I have drawn the jumper > configuration for the ATMega48/88/168 series... > > 1. Jumper "Prog Ctr
2007-02-20 by ae5k_list
--- In AVR-Chat@yahoogroups.com, Anggoro Dwi L wrote: > > Hallo All : > I will share tutorial electronics circuit diagram about alarms, audio, car, computers, design idea, fun circuits, generator, light, led, microcontrollers, motor, pc hardware, power supplies, radio, remote con
2007-02-20 by codsniper_net
Hi all, we are a student group working on a project where we need the ATMega168 microprocessor and could use some help setting it up. We thought we had all the wireings and settings right from the start but it seems like we cant program the chip. Could anyone describe a step by s
2007-02-20 by Anggoro Dwi L
Hallo All : I will share tutorial electronics circuit diagram about alarms, audio, car, computers, design idea, fun circuits, generator, light, led, microcontrollers, motor, pc hardware, power supplies, radio, remote controls, robotics, sensors, telephones, video. You can get in
2007-02-20 by dlc
The 940nm IR LED, of which there are many sources, is my favorite. I like the narrow angle ones since more energy goes in the direction I aim. However if you are going to do broadcasting or beacons you'll want the wide angle units. DLC oriy2003 wrote: > Hi every one, > > any one
2007-02-20 by Mike Bronosky
Here in the States, Radio Shack www.radioshack.com carries a 38kHz IR receiver module Catalog # 276-640, at $3.69 each. That might give you a good starting point. Mike On 2/19/07, oriy2003 wrote: > > Hi every one, > > any one know what is the best IR LED for remote control applic
2007-02-19 by sm5glc
Mark, I have used BASCOM with great success when dealing with LCD's! Sounds like you missed something when setting up the stuff. Try to modify the sample file for LCD i.e. lcd4.bas! The simulator is pretty nifty, and do test the code there first! Once you have the LCD working in
2007-02-19 by David VanHorn
> > > New designs is another story. An 8 pin Tiny controller for less than a > buck has about done away with many of the 555 timer applications. Yup. I've seen "courtesy tone" circuits for bare-bones repeater controllers, with a 556, but I've implemented a pretty much full-featur
2007-02-19 by Roy E. Burrage
Some designs were implemented way before that. This one is from 1976, when the MC14490 was a buck and a half and there were no microcontrollers to speak of...at least not economically available. When 1 customer orders 25 boards every 3rd year or so, and has about 5 repairs a year
2007-02-19 by David VanHorn
On 2/19/07, np np wrote: > > I am amazed that this type of IC exists. > I was writing key debounce software in 1984. Seems there's no shortage of expensive solutions to inexpensive problems. :) [Non-text portions of this message have been removed]
2007-02-19 by np np
I am amazed that this type of IC exists. I was writing key debounce software in 1984. www.ckp-railways/pcbcad21.htm "Roy E. Burrage" wrote: Motorola, now ON Semiconductor, also has/had the MC14490 for switch debouncing. However, at 5 bucks a piece the last time I bought any for a
2007-02-19 by Roy E. Burrage
Motorola, now ON Semiconductor, also has/had the MC14490 for switch debouncing. However, at 5 bucks a piece the last time I bought any for a control board I haven't taken the trouble to re design, it's much more cost effective to write a few lines of code to do the same job in ne
2007-02-19 by oriy2003
Hi every one, any one know what is the best IR LED for remote control application? or suggestion for LED driver? what is the best wide angle or high power with narrow angle? I'm looking for 950nm. Thanks Ori
2007-02-18 by Adam
A couple of years ago I ran into this with an 8051, and my solution was to simply wait for 20ms. The initial button press would cause the interrupt routine to activate. The micro would then wait for 20ms (doing other stuff in the meantime of course!), and re-check the interrupt a
2007-02-17 by David VanHorn
That, and I'd strongly advise a fleshed out interrupt vector table. They can all be RETIs, or they can be a short bit of code that turns off that interrupt (what I use for all unimplemented ISRs) or a "halt and catch fire", but I would never do what you did there. Imagine the tot
2007-02-17 by Jim Wagner
Manne - There is a big problem that everyone runs into when trying to sense switches with an interrupt. It is called "switch bounce". It happens fairly slowly compared to the speed of the micro. You get MANY interrupts every time the switch opens or closes. There are several ways
2007-02-17 by Manne Tallmarken
Hi all, I am trying to make my first assembler program that handles interrupts. On PB[6:0] I have som leds and on PA[7:6] i have two buttons. The leds goes on with a logic one from the port and the buttons is in tri-state when not pushed and goes to logic zero when pushed. I just
2007-02-16 by Manne Tallmarken
Hi all, I am trying to make my first assembler program that handles interrupts. On PB[6:0] I have som leds and on PA[7:6] i have two buttons. The leds goes on with a logic one from the port and the buttons is in tri-state when not pushed and goes to logic zero when pushed. I just
2007-02-16 by enkitec@gmail.com
I don't know.... yet. It works ok for a Mega8 and a Tiny2313. Mark Jordan On 16 Feb 2007 at 13:00, Jim Wagner wrote: > AVRASM32 isn't the correct assembler for a Mega88, is it? > > Jim > > On Fri, 16 Feb 2007 13:39:40 -0300 > enkitec@gmail.com wrote: > > > > Hi Zack, > > > > I'm
2007-02-16 by Zack Widup
Hi Mark, OK, as long as you have it. You could've downloaded AVR Studio (which is free) and gotten the file from that. But AVRTools is part of AVR Studio, I think. Zack On Fri, 16 Feb 2007 enkitec@gmail.com wrote: > > Hi Zack, > > I'm not using AVR Studio, just TextPad + AVRASM32
2007-02-16 by John Samperi
At 05:35 AM 17/02/2007, you wrote: >the fatal upgrade :( "Fatal upgrades' are a regular event :) The usual thing to do is a manual upgrade as described in DN_010 Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Pla
2007-02-16 by Ranjit Puri
Thanks Jim, Have PMed u my mail address ... and we did remove our target device from the board before the fatal upgrade :( Regards Ranjit On 2/16/07, Jim Wagner wrote: > > There are instructions on the AVRFreaks website for dealing > with this. You SHOULD NOT do an update with th
2007-02-16 by Jim Wagner
There are instructions on the AVRFreaks website for dealing with this. You SHOULD NOT do an update with the target processor installed on the board, if I recall correctly. That info does not appear to be on AVRFreaks any more. I do have a copy, however, and can send it to you if
2007-02-16 by David Kelly
On Fri, Feb 16, 2007 at 04:10:02PM -0000, Tim Mitchell wrote: > David Kelly wrote: > > > > Most don't do it but I have always advocated polling the busy bit on > > the LCD controller rather than use timing loops. > > According to my LCD code (which does work, but I wrote it a whi
2007-02-16 by Jim Wagner
AVRASM32 isn't the correct assembler for a Mega88, is it? Jim On Fri, 16 Feb 2007 13:39:40 -0300 enkitec@gmail.com wrote: > > Hi Zack, > > I'm not using AVR Studio, just TextPad + AVRASM32. > > Anyway, after two hours searching, Google found me a > file called > AVRTools.zip that
2007-02-16 by Ranjit Puri
Hi all, We managed to put a STK500 board out of action, something went wrong during the firmware upgrade process (we installed the latest AVR studio), after which we got a verification error in studio ... followed by an upgrade failed message ... We are now noticing the following
2007-02-16 by David VanHorn
> > According to my LCD code (which does work, but I wrote it a while ago) > you can't use the busy bit while initialising the controller - you have > to just wait. And wait.... I was going to mention that, but you beat me to it. AFAIK, you can trust the busy bit for non-init par
2007-02-16 by enkitec@gmail.com
Hi Zack, I'm not using AVR Studio, just TextPad + AVRASM32. Anyway, after two hours searching, Google found me a file called AVRTools.zip that has all the xxxDEF.INC files I need. Thanks. Mark Jordan On 16 Feb 2007 at 7:57, Zack Widup wrote: > > I have it. It was installed with A
2007-02-16 by Tim Mitchell
David Kelly wrote: > On Fri, Feb 16, 2007 at 11:53:22AM -0000, Tim Mitchell wrote: >> >> This is true - it's not a fault, just means your software has not >> initialised the display. >> >> The controllers on the LCDs are really really slow compared to AVR >> speed. If your LCD in
2007-02-16 by David Kelly
On Fri, Feb 16, 2007 at 11:53:22AM -0000, Tim Mitchell wrote: > > This is true - it's not a fault, just means your software has not > initialised the display. > > The controllers on the LCDs are really really slow compared to AVR > speed. If your LCD initialisation is not working
2007-02-16 by Zack Widup
I have it. It was installed with AVR Studio. On my computer, it's in the directory C:\...\Atmel\AVR Tools\AvrAssembler\Appnotes Which version of AVR Studio are you using? Zack On Fri, 16 Feb 2007 enkitec@gmail.com wrote: > > I need this m88def.inc file but can't find it anywhere.
2007-02-16 by enkitec@gmail.com
I need this m88def.inc file but can't find it anywhere. Is there a link to download it? Thanks, Mark Jordan
2007-02-16 by np np
I have programmed LCD's many times and use a 10ms delay between each setup command. www.ckp-railways.talktalk.net/pcbcad21.htm Tim Mitchell wrote: David Kelly wrote: > On Feb 15, 2007, at 3:59 PM, kernels_nz wrote: >> Many may have suggested this to you, but your display is proba
2007-02-16 by Tim Mitchell
David Kelly wrote: > On Feb 15, 2007, at 3:59 PM, kernels_nz wrote: >> Many may have suggested this to you, but your display is probably >> working fine, just way too much contrast. Made the same mistake when >> I used my first LCD module many years ago. Put a 10k pot between Vcc
2007-02-16 by David Kelly
On Feb 15, 2007, at 3:59 PM, kernels_nz wrote: > Hi Mark, > > Many may have suggested this to you, but your display is probably > working fine, just way too much contrast. Made the same mistake when I > used my first LCD module many years ago. Put a 10k pot between Vcc and > GND
2007-02-15 by kernels_nz
Two simple possibilities 1. Maybe something outside of the chip is causing the increased voltage at the output of the chip. It would depend on what the output impedance of the chip is and what it is connected to. I would suggest you disconnect the outputs before measuring them. 2
2007-02-15 by kernels_nz
Hi Mark, Many may have suggested this to you, but your display is probably working fine, just way too much contrast. Made the same mistake when I used my first LCD module many years ago. Put a 10k pot between Vcc and GND with the output going to the contrast pin, and adjust until
2007-02-15 by np np
He obviously means 5v logic to RS232. MAX232 is a great chip I have used loads of times. www.ckp-railways.talktalk.net/pcbcad21.htm sysadmn62 wrote: Not clear - are you looking for a dc-dc power converter, or a level converter to interface (say) a 5v chip to a 3.3v? If the former
2007-02-15 by magzky02
hello guys i am using SN54C3232 level converter and i dont get a consistent data. SN65C3232 has 2 channels.One works fine but the other doesnt. i tried printing thesame characters on 2 UART's connected to the level converter. Then using a scope, i measured the waveforms and volta
2007-02-14 by sysadmn62
30 seconds with Google gives http://www.helmix.at/hapsim/ I have not used it, but it claims to simulate an HD4478. Hope this helps. Let us know.
2007-02-14 by sysadmn62
Not clear - are you looking for a dc-dc power converter, or a level converter to interface (say) a 5v chip to a 3.3v? If the former, what power level and efficiency are you willing to pay for? There are some really nifty led drivers in the $2 and under range. If the latter, most
2007-02-14 by Thomas Keller
Because the caps are, in essence, in series with each other, and so two 33 pF caps in series is equivalent to a 16.5 pF cap in parallel with the crystal. tom weston54 wrote: > > 33pf caps?? The crystal is 10mhz, and stamped right on the package > from Digikey is that it's rated f
2007-02-14 by dlc@frii.com
AVRdude is Windows, linux and Max OS X. Just find the one that runs on your box and go with it. DLC > This looks great Dennis, thanks for your speedy response. I use a > Windows computer, and it looks like AVRDUDE is linux based, at least > for the command line. Did I miss someth
2007-02-14 by dlc@frii.com
99% of the time you can just hang a 1K resistor to ground off of the bias pin and get a perfectly fine display. DLC -- Dennis Clark dlc@frii.com www.techtoystoday.com > Also, you should have a pot in your circuit to adjust the intensity > ("brightness", sort of) on your display.
2007-02-14 by David VanHorn
On 2/14/07, weston54 wrote: > > 33pf caps?? The crystal is 10mhz, and stamped right on the package > from Digikey is that it's rated for 18pf caps. I'm not sure I > understand why you recommend 33pf caps. Sigh.. The Cl value is NOT the size of caps to use. See app notes at FOX cr
2007-02-14 by Zack Widup
Also, you should have a pot in your circuit to adjust the intensity ("brightness", sort of) on your display. When this pot is advanced too far, the display characters all show up as black boxes. Zack On Wed, 14 Feb 2007, David Kelly wrote: > On Wed, Feb 14, 2007 at 09:04:51AM -05
2007-02-14 by David Kelly
On Wed, Feb 14, 2007 at 09:04:51AM -0500, Mark Weston wrote: > > Say, the cause of this whole nightmare was my attempt at getting an > LCD working correctly from the 2313. Sadly though, when I plug in the > LCD I just get the first line showing as a set of 16 black squares. Thats
2007-02-14 by Leon
----- Original Message ----- From: "weston54" To: Sent: Wednesday, February 14, 2007 3:52 PM Subject: [AVR-Chat] Re:Tiny2313 > 33pf caps?? The crystal is 10mhz, and stamped right on the package > from Digikey is that it's rated for 18pf caps. I'm not sure I > understand why you r
2007-02-14 by weston54
This looks great Dennis, thanks for your speedy response. I use a Windows computer, and it looks like AVRDUDE is linux based, at least for the command line. Did I miss something. Is there still hope? Mark Weston
2007-02-14 by weston54
33pf caps?? The crystal is 10mhz, and stamped right on the package from Digikey is that it's rated for 18pf caps. I'm not sure I understand why you recommend 33pf caps. Mark Weston