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2004-06-28 by jay marante
what kind of sensor? where should i put 'em? David VanHorn wrote: At 07:30 AM 6/28/2004 -0700, jay marante wrote: >when i power-up my MCU, is it possible for me to know the position of >my servo motor if it is in a 0, 90, 180, etc, degree? how? >TIA For remote control servos, no.
2004-06-28 by David VanHorn
At 07:30 AM 6/28/2004 -0700, jay marante wrote: >when i power-up my MCU, is it possible for me to know the position of >my servo motor if it is in a 0, 90, 180, etc, degree? how? >TIA For remote control servos, no. There's no positional feedback. You could ADD a sensor.
2004-06-28 by jay marante
when i power-up my MCU, is it possible for me to know the position of my servo motor if it is in a 0, 90, 180, etc, degree? how? TIA -jay Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers!
2004-06-27 by erikc
The drawer and nest combination is an excellent idea, IMO. Erikc - firewevr@airmail.net /// "An Fhirinne in aghaidh an tSaoil." "The Truth against the World." -- Bardic Motto ///I did NOT lose my mind! It's backed up on the server (and the network's down....) ----- Original Messa
2004-06-27 by Brian Dean
On Sat, Jun 26, 2004 at 05:48:17PM -0000, Dave Mucha wrote: > I have a program that I want to try out for my brother in Florida. > I'm in NJ. : ) he has the PALM and the collage he is in has a > greenhouse that he is taking care of. > > I figured that with a bootloader, I can wri
2004-06-27 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, "Chetan Bhargava" wrote: > Hi All, > > As announced at the Atmel seminar, the Tiny11 device is available at > $0.25 each. Would anyone be interested in group buy? > > Regards, > > Chetan Sound interesting. Mouser has them for about $ 1.58 and Digi
2004-06-27 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, Dave VanHorn wrote: > > > > >If that is the case, why not send, via snail mail, a > >programmed part "Florida" can install in his appliance? > >(The applicance has a socket for the chip) The old part can > >then be sent back to "New Jersey" for re
2004-06-26 by Dave VanHorn
> >If that is the case, why not send, via snail mail, a >programmed part "Florida" can install in his appliance? >(The applicance has a socket for the chip) The old part can >then be sent back to "New Jersey" for reuse. Outside the box thinking, but I think they are looking for a
2004-06-26 by Dave VanHorn
> > >Seems like there was a similar case with the KISS firmware for TNCs. >I seem to recall there was an escape sequence for certain characters. Yeah, you'd have to do that here, or send the hex as ascii, $AB as $41, $42 and so on.
2004-06-26 by Mike Murphree
On Jun 26, 2004, at 2:09 PM, Dave VanHorn wrote: > > I see.. An AVRISP could be used, if you could write NSB code to drive > it. > I'll warn you of this though, there's no way to send $FF to the serial > port > in NSBasic. > Originally there was no way to send a null, because he
2004-06-26 by erikc
OK, I'm going to say something that may appear stupid, so bear with me. My interpretation of the problem is that "Florida" will be merely using the AVR in an appliance that controls greenhouse watering, etc. and that he will be entering values on a keyboard or something like that
2004-06-26 by Dave VanHorn
> >I have a program that I want to try out for my brother in Florida. >I'm in NJ. : ) he has the PALM and the collage he is in has a >greenhouse that he is taking care of. > >I figured that with a bootloader, I can write a new program if needed >and e-mail it to him. > >Since he
2004-06-26 by Dave VanHorn
At 05:18 AM 6/3/2004 -0700, Larry Barello wrote: >The SBI instruction only modifies one bit (0-7) at a time. You are trying >to modify a whole byte. Very easily confused with SBR and CBR (Which I for one would just like to tear out of the assembler), Set BITS in register, and cle
2004-06-26 by Sunil Jha
Hi! I am in urgent need of AVR-GCC code for using Dual UART of ATmega162. I will be very much thankful if anyone can help me by suggesting proper library for it. Thanks, Sunil ________________________________________________________________________ Yahoo! India Matrimony: Find yo
2004-06-26 by Dave Mucha
--- In AVR-Chat@yahoogroups.com, David VanHorn wrote: > > > > >does anybody have any experiance with PALM's and AVR's and/or > >bootloaders ? > > Sure, but why do you need a bootloader? > All you need is to change some parameters. > > Write the control section to work from variab
2004-06-26 by David VanHorn
> >does anybody have any experiance with PALM's and AVR's and/or >bootloaders ? Sure, but why do you need a bootloader? All you need is to change some parameters. Write the control section to work from variables stored in EEPROM. On first boot, write some default values to EE. Th
2004-06-26 by Sal Brisindi
Hi All, Did anyone here ever write code for a 4 or 6 multiplexed digit clock using a AVR? The MM5314 4/6 digit clock ic is getting scarce and expensive so I would think a AVR based one would be great. I do have a bunch of AT90S2313's to play with. Thanks, Sal Brisindi http://www.
2004-06-26 by Dave Mucha
Hi all, This is my first post here an I've enjoyed reading some of the archives. I am in search of a microcontroller for some different projects I want to do and I am hoping someone can offer some ideas or set me straight. I would like to make a greenhouse timer and be able to pr
2004-06-25 by Chetan Bhargava
Hi All, As announced at the Atmel seminar, the Tiny11 device is available at $0.25 each. Would anyone be interested in group buy? Regards, Chetan
2004-06-24 by Ken
OK. Unconnected and internal pull up resistors enabled it is then. Thanks for the answer. Hope I haven't started anything. :) Ken http://www.speechchips.com --- In AVR-Chat@yahoogroups.com, David VanHorn wrote: > At 06:21 PM 6/23/2004 +0000, Ken wrote: > > >I'm new to AVR's and j
2004-06-24 by Ken
>just program them as inputs with the pullups. You can do that! Sweet. The more I play with the AVR's, the more I like them. Sorry if it seems like a simple question. I'm a software guy mostly and have only begun to explore hardware. Ken http://www.speechchips.com --- In AVR-Chat
2004-06-23 by David VanHorn
At 06:21 PM 6/23/2004 +0000, Ken wrote: >I'm new to AVR's and just want to know what to do with unused I/O >lines. I assume I would set them to inputs, enable the internal >resistors and tie them to ground. Is that right? You're drawing extra current that way, pulling them up int
2004-06-23 by Al Welch
IF it were me I would leave them untied to any external connections, just program them as inputs with the pullups. That way you can always connect something to them in a pinch after the board is built and you suddenly discover you need an input or output line. Al Welch -----Origi
2004-06-23 by Ken
I'm new to AVR's and just want to know what to do with unused I/O lines. I assume I would set them to inputs, enable the internal resistors and tie them to ground. Is that right?
2004-06-23 by Arif YILMAZ
Hello, I am going to use a TFT display with SED1374 ( S1D13704) can anyone help to how to connect SED1374 to a color TFT display, TFTs have analog or digital rgb interfaces and SED1374 has digital RGB output, however TFT displays have afew more inputs like VSYNC, HSYNC etc. and d
2004-06-23 by Jeremy Brandon
Yes I can. I understand you can foretell the future. About four years. How long have you been able to do that? Sorry! Jeremy.
2004-06-23 by Jeremy Brandon
--- In AVR-Chat@yahoogroups.com, "p_anglum" wrote: > I'm using a Tiny 15 to convert a 0-10 volt input to PWM output. > I use a voltage divider (10K - 10K) to scale the 0-10 down to 0-5 > before applying it to PB3(ADC3). > Everything seems to work except at the lowest range of inp
2004-06-23 by David VanHorn
At 08:26 PM 6/22/2004 +0000, p_anglum wrote: >Of course I turned off the pull-up resistor. OK, let me check one >more time. Wait a minute.... PB4 is the 5th bit not the fourth. >@#$%#&%&! Hey, now it works. >Funny how being just onnnnnnne bit off makes a difference. You'd think t
2004-06-22 by Brian Fairchild
Although you have configured the pin as an input, have you turned off the pull-up resistor? -----Original Message----- From: p_anglum [mailto:p_anglum@hotmail.com] Sent: 22 June 2004 19:57 To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] A/D to PWM I'm using a Tiny 15 to convert
2004-06-22 by James Wagner
Inaccuracy in the reference should have very little effect on measurments near ground. But, yes, the source impedance may be too high. Try this experiment: 1. Make a measurment with the top of the divider (the end normally connected to 10V) grounded. This will make the divider re
2004-06-22 by David VanHorn
At 06:57 PM 6/22/2004 +0000, p_anglum wrote: >I'm using a Tiny 15 to convert a 0-10 volt input to PWM output. >I use a voltage divider (10K - 10K) to scale the 0-10 down to 0-5 >before applying it to PB3(ADC3). > >Everything seems to work except at the lowest range of input volta
2004-06-22 by p_anglum
Of course I turned off the pull-up resistor. OK, let me check one more time. Wait a minute.... PB4 is the 5th bit not the fourth. @#$%#&%&! Hey, now it works. Funny how being just onnnnnnne bit off makes a difference. Thanks Brian, Pat --- In AVR-Chat@yahoogroups.com, "Brian Fair
2004-06-22 by p_anglum
--- In AVR-Chat@yahoogroups.com, David VanHorn wrote: > At 06:57 PM 6/22/2004 +0000, p_anglum wrote: > > >I'm using a Tiny 15 to convert a 0-10 volt input to PWM output. > >I use a voltage divider (10K - 10K) to scale the 0-10 down to 0-5 > >before applying it to PB3(ADC3). > > >
2004-06-22 by p_anglum
I'm using a Tiny 15 to convert a 0-10 volt input to PWM output. I use a voltage divider (10K - 10K) to scale the 0-10 down to 0-5 before applying it to PB3(ADC3). Everything seems to work except at the lowest range of input voltage the A/D seems to always read some small voltage.
2004-06-22 by p_anglum
I'm using a Tiny 15 to convert a 0-10 volt input to PWM output. I use a voltage divider (10K - 10K) to scale the 0-10 down to 0-5 before applying it to PB3(ADC3). Everything seems to work except at the lowest range of input voltage the A/D seems to always read some small voltage.
2004-06-21 by jorinha
--- In AVR-Chat@yahoogroups.com, "ha_60" wrote: > I need a parallel programmer that be free because i disable the isp > and jtag interface and i cant program with isp. > can any one help me? > tanks. > by. http://www.specs.de/users/danni/tools/proflash/index.htm
2004-06-21 by Mark Jordan
http://elm-chan.org/works/avrx/report_e.html On 21 Jun 2004 at 16:04, ha_60 wrote: > I need a parallel programmer that be free because i disable the isp > and jtag interface and i cant program with isp. > can any one help me? > tanks. > by. > > > > > > > Yahoo! Groups Links > > >
2004-06-21 by ha_60
I need a parallel programmer that be free because i disable the isp and jtag interface and i cant program with isp. can any one help me? tanks. by.
2004-06-21 by f_lipowitz
Has anyone out there utilized SD Flash cards in their designs yet? FYI- this is the small flash card that has 7 pads that is in many of the new digital cameras and pda's (memory capacity anywhere from 64MB to 1GB). I have the H/W interface information and have the card adapter co
2004-06-20 by David VanHorn
At 12:07 PM 6/20/2004 -0700, Dave Hylands wrote: >Hi Wagner, > >The following comninations will also yield a 1: > >0111 >1011 >1101 >1110 > >I think that David made a mistake on his 0111 entry. I did. >To check that only one bit is set is the same thing as saying that a >number i
2004-06-20 by Dave Hylands
Hi Paul, > > If the expression ( x & ( x - 1 )) yields zero, then x is a > > power of two. > > To be completely pedantic, that isn't quite true when x==0 as > zero is not a power of two. Yep - that is I agree with you. > What you could also point out is that x & (x-1) removes the
2004-06-20 by Paul Curtis
Hi, > The following comninations will also yield a 1: > > 0111 > 1011 > 1101 > 1110 > > I think that David made a mistake on his 0111 entry. > > To check that only one bit is set is the same thing as saying > that a number is a power of two. > > If the expression ( x & ( x - 1 ))
2004-06-20 by Dave Hylands
Hi Wagner, The following comninations will also yield a 1: 0111 1011 1101 1110 I think that David made a mistake on his 0111 entry. To check that only one bit is set is the same thing as saying that a number is a power of two. If the expression ( x & ( x - 1 )) yields zero, then
2004-06-20 by wagner
David VanHorn wrote: > What's the fastest way to get the exclusive or, of four bits in a > register? > > 0000 = 0 > 0001 = 1 > 0010 = 1 > 0011 = 0 > 0100 = 1 > 0101 = 0 > 0110 = 0 > 0111 = 0 > and so on... > > Not for a parity generator, but I think it ends up as the same > probl
2004-06-20 by jay marante
I only need to control 1 motor. I guess the phase correct PWM fit the idea. --- dvanhorn@cedar.net wrote: > At 09:27 PM 6/19/2004 -0700, Dave Hylands wrote: > > >For power consumption purposes, you probably want to stagger the start > >times. Especially if you're trying to start
2004-06-20 by David VanHorn
At 09:27 PM 6/19/2004 -0700, Dave Hylands wrote: >For power consumption purposes, you probably want to stagger the start >times. Especially if you're trying to start all 8 servos simultaneously. >No reason that they pulses couldn't overlap. True, If I was going to start them all
2004-06-20 by Dave Hylands
For power consumption purposes, you probably want to stagger the start times. Especially if you're trying to start all 8 servos simultaneously. No reason that they pulses couldn't overlap. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ > -----Original Message--
2004-06-20 by jay marante
how bout the PWM in in timer1? what's the appropriate PWM for the servo, the fast PWM or the Phase correct PWM? i don't know all of this. please bare with me. thanks. David VanHorn wrote: At 05:38 PM 6/19/2004 -0700, jay marante wrote: >maybe i'll just have to go for some trail-a
2004-06-20 by David VanHorn
At 05:38 PM 6/19/2004 -0700, jay marante wrote: >maybe i'll just have to go for some trail-and-error. >next, i don't know how thw PWM works. i'll use mega16L. >in general, how does the PWM work? and in AVR, how should i do this? >thanks for the help. I didn't use PWM in my implem
2004-06-20 by jay marante
maybe i'll just have to go for some trail-and-error. next, i don't know how thw PWM works. i'll use mega16L. in general, how does the PWM work? and in AVR, how should i do this? thanks for the help. David VanHorn wrote: At 05:20 PM 6/19/2004 -0700, jay marante wrote: >ok... assum