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2009-01-05 by hal.foster
--- In AVR-Chat@yahoogroups.com, Cat C wrote: > > > That looks very nice, WOW. > I wish it was NOT in asm, as I have no desire to go back to that... and that makes it hard for me to read, but WOW, great work! > > Cat > Thanks - when I decided to take the plunge and learn to use A
2009-01-05 by John Samperi
At 02:51 PM 5/01/2009, you wrote: >I have code running on my ATMega128. The software is TWI/I2C (talking >to a DS1307). When I compile it for my ATMega16, it gets stuck in >the following file: How are the 2 modules wired up? ie pull-up resistors for the I2C etc. Regards John Samp
2009-01-05 by englsprogeny
I have code running on my ATMega128. The software is TWI/I2C (talking to a DS1307). When I compile it for my ATMega16, it gets stuck in the following file: TWI.C At the following location: WAIT_FOR_TWINT \ for ( \ toCounter = toValue; \ ( toCounter != 0 ) && ( ( TWCR & _BV( TWINT
2009-01-03 by hal.foster
Just uploaded this project, and would welcome any comments, suggestions and even criticisms LCMeter.RAR in files
2008-12-31 by David VanHorn
The idea that all crystals are the same should be taken out back, shot, burned, and the ashes should be scattered. It is common practice to ground the shield can of crystals, but there are certainly some that aren't designed for this, and even some that aren't capable of being so
2008-12-31 by Tim Gilbert
Hate to disagree but we always solder the case down to the board. (That is why the pad is on the board.) I've never seen an aluminum case; might be RoHS which makes is a bit harder to solder even with Pb/Sn solder, just use more flux. We've also moved away from this case since ou
2008-12-31 by Steven Hodge
Since this is "Mk I" and won't be subject to vibration I think I'll skip the glue. But on "Mk II" I'll use some epoxy. Thanks for the tip. Steve From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of George Sent: Wednesday, December 31, 2008 1:25 AM To: AVR
2008-12-31 by George
--- In AVR-Chat@yahoogroups.com, "Tim Gilbert" wrote: > > Hate to disagree but we always solder the case down to the board. (That is why the pad is on the board.) No problem Tim - we can remember one customer that wanted to do that. For most others we provided a couple of drilled
2008-12-31 by Zack Widup
I believe you're right; don't attempt to solder the crystal case. I have used a dab of RTV silicone sealant to hold crystals in place if I was concerned about vibration. Also, a tiny piece of double-sided adhesive foam rubber will hold things like that down indefinitely. Just mak
2008-12-31 by George
--- In AVR-Chat@yahoogroups.com, "Steven Hodge" wrote: > am I supposed to solder the can to the big pad under it also? I dont know the particulay crystal but most 32k watch xtals are in a tiny cylindrical metal case. If it is one like that then do not attempt to solder it. It may
2008-12-31 by Steven Hodge
I'm putting together a pcb with a Phillips PCF8563 Real Time Clock. I have an Abracon 32.768 cylinder type crystal for it. I made the pcb pads exactly as suggested in the data sheet for the crystal, which has one long rectangle immediately under the cylinder part. I just finished
2008-12-23 by khahramon0786
Hi all! is anybody know how use MMC in proteus? how can i get multimediacard image file ?
2008-12-17 by Jim Wagner
Blue sky - I have no knowledge of proteus, so I cannot advise in that area. I see no functional difference between "motor" and "fan" except that many small fans are internally little stepper motors. Such motors do not function well, or possibly at all, with PWM control. Rather, y
2008-12-17 by blue sky
hi Richard thank u i will do that ok but the model of the temperature sensor in proteus is not active as i put it no output no reaction happen .and anther thing after the step of proteus i will make the circuit with hardware so will it be not easy to make that --- On Tue, 12/16/0
2008-12-17 by blue sky
hi jim yes of course the temperature sensor output is analog so i will use ADC and i will not use motor no i use fan with 5vDC yah it is small the main thing i ask that what is the important part that i must take care to do when i use proteus with micro . i will write my program
2008-12-16 by Richard Reeves
> well this is my first time to programing micro controller so i will use > proteus program to be sure first that the program will be in a right > way to make simulation so i want your help if u don't mind plz . I could describe how to do it, but it would be far better to point y
2008-12-16 by Jim Wagner
On Dec 15, 2008, at 9:54 PM, bluesky_15_8 wrote: > hi all > well this is my first time to programing micro controller so i will > use > proteus program to be sure first that the program will be in a right > way to make simulation so i want your help if u don't mind plz . i use >
2008-12-16 by bluesky_15_8
hi all well this is my first time to programing micro controller so i will use proteus program to be sure first that the program will be in a right way to make simulation so i want your help if u don't mind plz . i use proteus before but how can i use it with micro . i don't have
2008-12-10 by Ken Holt
I have used the Memsic 2D accelerometers in a toy magic wand for many years. The Memsic part is very similar to the AD202, but cheaper and slower. The accelerometer, coupled to an AVR, performs tilt and motion sensing. The analog interface code is straight-forward, and I'd be hap
2008-12-10 by leon Heller
----- Original Message ----- From: "Sander Pool" To: Sent: Wednesday, December 10, 2008 1:13 AM Subject: Re: [AVR-Chat] Re: Accelerometer question > > Holy cow, I sent this 12/2 and it shows up 12/9? Anyone else getting > delayed response from Y! or did I end up being moderated h
2008-12-10 by Sander Pool
Ah, I got confused. I put one of the other ADXL parts I had in a Maxim parts container. It's really an Analog ADXL of some kind. It's hard to read the partnumber from the tiny device but it's probably the 202. As I recall it has 2 perpendicular sensors in the 2G range but maybe i
2008-12-10 by Rick
You built a self leveling toy using what Maxim accelerometer? Maxim part number please? --- In AVR-Chat@yahoogroups.com, Sander Pool wrote: > > > Holy cow, I sent this 12/2 and it shows up 12/9? Anyone else getting > delayed response from Y! or did I end up being moderated here?
2008-12-10 by Kathy Quinlan
Yahoo Flagged it as spam :( Just doing the routine maintenance and picked it up Regards, Kat. Sander Pool wrote: > > > Holy cow, I sent this 12/2 and it shows up 12/9? Anyone else getting > delayed response from Y! or did I end up being moderated here? Did Y! > flag it as spam? >
2008-12-10 by Sander Pool
Holy cow, I sent this 12/2 and it shows up 12/9? Anyone else getting delayed response from Y! or did I end up being moderated here? Did Y! flag it as spam? Sander Sander Pool wrote: > > > Hi, > > a few years ago I built a little self leveling toy that used a solid > state acceler
2008-12-04 by Ken Holt
RE Optical Mouse as Position Sensor: Have you ever interfaced an optical mouse IC to an AVR? I was just about to start such a project for use in linear encoding of speed and position.(1 axis only) I would go directly to the sensor chip, and not be bothered with the USB . BTW, I d
2008-12-03 by Robert Tilden
Why not use a laser/optical mouse. Non contact, robust, and can resolve >> 1000 lpi... If you decide to use a mouse that is... ----------------------------------- Bob Tilden, tilden@northwestern.edu High Energy Physics Group Northwestern University -----Original Message----- From
2008-12-03 by Sander Pool
I would say that's true for most Y! groups that are geared towards technical assistance :) David VanHorn wrote: > > O > That's something I've noticed on here in the past. > When people are more open and detailed about what they are doing, they > tend to get accurate and useful he
2008-12-03 by David VanHorn
On Wed, Dec 3, 2008 at 1:06 PM, Rick wrote: > > Okay, well now that we know what you are "REALLY" doing and not > building a tilt meter / inclinometer I can say with confidence the > accelerometer is absolutlely to wrong way to go, and so is a > potentiometer and a gyroscope. Tha
2008-12-03 by Tim Gilbert
Richard, What kind of accuracy do you need? Most machining operations will probably need more accuracy than a mouse engine will provide. You'll also want something that is IP65 or better (sealed against dirt, oil etc) and that is very robust. A readout that is inconsistent is wor
2008-12-03 by rutabagalips
If you use the mouse method and place the interrupter disk on the rotation axis of the table, you will avoid problems with backlash, but if you place it on the axis of the rotation handle, assuming, of course, that there is one, the accuracy will be much better. Remember also tha
2008-12-03 by Rick
Okay, well now that we know what you are "REALLY" doing and not building a tilt meter / inclinometer I can say with confidence the accelerometer is absolutlely to wrong way to go, and so is a potentiometer and a gyroscope. It's optical encoder time. I had a few here built from He
2008-12-03 by Richard
Talk about having the answer in the palm of your hand. I think the mouse could give enough accuracy. I wanted to play around with an accelerometer so I guess I was trying to make the problem fit the solution. The project is to make a digital display for a rotary table for my mill
2008-12-03 by dlc
And most I2C and SPI devices have reset or enable pins that can be biased off when the AVR is in reset mode during programming. Plan ahead, it'll work fine. DLC David VanHorn wrote: >> To sumerize it, what happens is that the I2C mode can put a I2C "Ack" on the >> ISP >> lines if
2008-12-03 by Brian
--- In AVR-Chat@yahoogroups.com, "Rick" wrote: > > --- In AVR-Chat@yahoogroups.com, "Richard" wrote: > > > > Hi everybody I have been hanging around here for a while, great forum. > > Do any of you have any experience with accelerometers? I am thinking of > > a project using an a
2008-12-03 by Rick
--- In AVR-Chat@yahoogroups.com, "David VanHorn" wrote: > > the capactive sensors that they use in digital calipers look pretty good. > Yes good suggestion. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Consider this- Take apart a computer serial ball mouse. In there you
2008-12-03 by David VanHorn
the capactive sensors that they use in digital calipers look pretty good.
2008-12-03 by Randy Glenn
By the sounds of it an accelerometer is not the solution you want - a wheel encoder would work much better, I think. The basic idea is, you have a disc with a pattern of black stripes on it, or slots cut in it, that selectively blocks light. By counting the number of pulses, you
2008-12-03 by Sander Pool
Hi, a few years ago I built a little self leveling toy that used a solid state accelerometer from Maxim and a servo. My cruddy programming notwithstanding that sensor was quite capable of measuring angles for that particular application. A dual axis accelerometer setup perpendicu
2008-12-03 by David VanHorn
> To sumerize it, what happens is that the I2C mode can put a I2C "Ack" on the > ISP > lines if the ISP data happens to look like the Accelerometer's I2C address, > then you can not program and/or verify the program with ISP. >\ Isolation resistors would fix that problem, you jus
2008-12-03 by Bob Paddock
On Tue, Dec 2, 2008 at 2:34 PM, Richard wrote: > Hi everybody I have been hanging around here for a while, great forum. > Do any of you have any experience with accelerometers? > Make sure the one you pick will not interfere with the AVR In System Programming (ISP). The ones that
2008-12-03 by Eric Rabinowitz
I worked at an accelerometer transducer company once. We were looking for accuracy over time and discovered why there was a shift over time.... We were able to measure the slight inclination of New Jersey tilting over it's water table with the phase of the moon!.... Is that accur
2008-12-03 by leon Heller
----- Original Message ----- From: "Richard" To: Sent: Tuesday, December 02, 2008 7:34 PM Subject: [AVR-Chat] Accelerometer question > Hi everybody I have been hanging around here for a while, great forum. > Do any of you have any experience with accelerometers? I am thinking of
2008-12-03 by Rick
--- In AVR-Chat@yahoogroups.com, "Richard" wrote: > > Hi everybody I have been hanging around here for a while, great forum. > Do any of you have any experience with accelerometers? I am thinking of > a project using an accelerometer to measure angles. The idea is this: > the acc
2008-12-03 by Rick
--- In AVR-Chat@yahoogroups.com, "Richard" wrote: > > Hi everybody I have been hanging around here for a while, great forum. > Do any of you have any experience with accelerometers? I am thinking of > a project using an accelerometer to measure angles. The idea is this: > the acc
2008-12-02 by Jeremy
I am sorry if the formatting of my post is off. Not quite sure whether yahoo groups wants it to look good or not. If I read the post from the group there is no formatting but if I post a reply, the text is formatted. I also wanted to add that I'm using AVR Studio with AVR-GCC. --
2008-12-02 by Jeremy
I'm tinkering with a 16x2 HD44780 LCD display attached to my dragon rider. The uC is a ATmega32 feeding the LCD through PortA and using JTag as the debugger/programmer. I am using Peter Fleury's lcd libraries (http://jump.to/fleury). The only thing I've changed in the header is t
2008-12-02 by Richard
Hi everybody I have been hanging around here for a while, great forum. Do any of you have any experience with accelerometers? I am thinking of a project using an accelerometer to measure angles. The idea is this: the accelerometer will be on the outer edge of a wheel. As the whee
2008-12-01 by David Appleton
KiCAD looks really cool. When I do PCB design I use expresspcb. [$51 for 3 boards] Expresspcb has proprietary software that writes proprietary files [so you have to stay with them once you've designed your board layout on their software]. KiCAD looks like it'll will do Gerber fil
2008-12-01 by Roy E. Burrage
Does anyone have experience using KiCAD? I'm interested in your experiences with it. Thoughts? Rants? Raves? Thanks, REB [Non-text portions of this message have been removed]
2008-11-20 by mago Umandam
I gave up the idea of setting the voltage using the MCU. I decided to use a potentiometer and monitor the output voltage. the linear regulator after the SMPS maybe good idea but it may not be applicable to high voltage settings. Maybe only use Inductors and capacitors and maybe f