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Messages 21173 - 21202 of 41170   Oldest  |  < Older  |  Newer >  |  Newest
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21173
Yanno, it strikes me that part of the problem is the whole PWM thing. Does anyone know the protocol for Digital servos? I think it would be a lot simpler if...
Rich Chandler
mauser712
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Dec 1, 2004
8:41 am
21174
yummm... code I used the MegaBitty code on the ARC AVR board (at 8Mhz internal I think), and it correctly positions a servo. Thanks! I have had no success...
barryschrag
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Dec 1, 2004
11:27 pm
21175
Hi Barry, Did you modify the C code to use Port C? The GeneratePulse routine I provided is hardcoded to use Port D. And oh - yeah - You'll need to configure...
Dave Hylands
dhylands_99
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Dec 1, 2004
11:41 pm
21176
... Some speed controllers choke at the extremes of pulse length. 1ms or 2 ms is just outside of the acceptable range. -- "From Each according to his...
Rich Chandler
mauser712
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Dec 1, 2004
11:48 pm
21177
the link I put up was for a single chip that will run 16 servos with simple I2C commands. AND you can order the chip with 3 different addresses for running 48...
tbrenke@...
trbrenke
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Dec 2, 2004
2:45 am
21178
I did change the code to use PortC and it must be configured for output -- since switching the servo from the left port to the right port still allows it to...
barryschrag
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Dec 2, 2004
3:36 am
21179
I ran the values from 0 to 255 and there is no detectable output from that ESC. Any idea which end of the range the ESC might want? ... but ... or 2 ms is ......
barryschrag
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Dec 2, 2004
3:39 am
21180
This chip sounds ideal for controlling several servos. I only have a need to control the TXT-1 (former Monster R/C truck) at this point. It only has a...
barryschrag
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Dec 2, 2004
3:43 am
21181
Ok, a very strange thing is happening. I decided to try this line: DDRC |= (BV( 2 ) | BV( 5 )); and we are rolling! I turned off the ARC board, pulled out...
barryschrag
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Dec 2, 2004
3:56 am
21182
The line you added changes the I/O port from an INPUT to an OUTPUT port. WHen it is an INPUT port, writing to the PORT register will switch on/off ~50kohm pull...
Larry Barello
lbarello
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Dec 2, 2004
6:24 am
21183
... Could be a signal strength issue. I know Victors need amplification with certain RC receivers....
Rich Chandler
mauser712
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Dec 2, 2004
9:31 am
21184
That makes sense, I had no idea. Thanks! ... port. ... on/off ... the PORT ... Possibly the ... drive vs ... right ... redeployed - ... without ... pins ... ...
barryschrag
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Dec 2, 2004
3:19 pm
21185
... I missed the earlier link, but I looked at this one. That's one slick chip. Pretty expensive though, $17 for the 8 servo version and $21 for the 16 ...
Rich Chandler
mauser712
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Dec 2, 2004
9:10 pm
21186
hi there, i'm building infrared detection circuits. i wanna use Infrared Emitter 555 circuit from http://www.robotroom.com/Infrared555.html which actually send...
zhoulei545
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Dec 3, 2004
12:25 am
21187
... The PNA4602 is a good device for doing this. Here's some background: http://www.oricomtech.com/projects/irpd-an.htm This might be inverted from what you...
Dave Hylands
dhylands_99
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Dec 3, 2004
1:00 am
21188
Hello, I took you'lls advice and was going to get the EPIC plus programmer... until I found out I might be working with AVR chips as well. What do you'll think...
Lee Leathers
tr3nd42
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Dec 3, 2004
4:58 am
21189
funny you should say that.... Brian of BDmicro (the mavric) is designing one like this with more features. I do not know when he will have this ready though. ...
tbrenke@...
trbrenke
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Dec 3, 2004
5:14 am
21190
I would not consider buying a programmer like this for use on an AVR. All AVR chips are in circuit programmable, so why would you want a programmer that...
ed@...
phoneguin
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Dec 3, 2004
6:26 am
21191
I was looking on olimex's website and saw a PIC programmer for 12bucks http://www.olimex.com/dev/pic-pg2c.html How would the epic or any other programmer be...
Lee Leathers
tr3nd42
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Dec 3, 2004
7:49 am
21192
Dear Sirs I would like to read & know about programmable power supplies.Can somebody provide some links on this topic.Thank you Gopi Menon...
gopi@...
Send Email
Dec 3, 2004
9:53 am
21193
If you are available, we could use a few more volunteers to help out at the FIRST Lego League competition. Your help will be greatly appreciated by 300 ...
Kevin Ross
kevinwross
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Dec 3, 2004
4:34 pm
21194
We have two Droid sets at co-op. The motor is packaged with the pre-programmed chip of course. Severely limited. The question keeps coming up: can we find...
Susan M
slmccaina
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Dec 4, 2004
4:02 am
21195
a robot should be show at 'American Pie 4' check out this site: http://www.drrobot.com...
leo_yuheng_xie
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Dec 4, 2004
5:55 am
21196
I used a small PC104/386 computer in a robot controller project that I did this past year. I wanted to use the 386 to get the color graphic display, mass...
johnmciv
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Dec 4, 2004
5:56 am
21197
Hello, i am stumped.. I have a bs2p24 and a mcp23016 that I am using to monitor some Normally open push buttons.. Here is the code: PBScan: PAUSE 18 I2CIN SDA,...
Lee Leathers
tr3nd42
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Dec 4, 2004
5:59 am
21198
hmm.. looks like the problem is when I move to bank2 (that is where this code resides).. bank0 has a subroutine that checks the chip once.. then calls the code...
Lee Leathers
tr3nd42
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Dec 4, 2004
6:59 am
21199
hmm.. one issue was, bank 2 had the mcp23016's address wrong.. so now, the only problem is back to the IF loops not being satisfied by datagp1 or datagp0... I...
Lee Leathers
tr3nd42
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Dec 4, 2004
7:19 am
21200
None of the "if" statements check for "11111111". They check for many possible numbers, but not that one. Could that be the problem? -- Martin Sondergaard....
Martin Sondergaard
martinsonder...
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Dec 4, 2004
2:00 pm
21201
I've been designing a bot to use a Mini-ITX board. The lack of I/O is a big concern. Via's new T (or TC don't remember) board has built in I2C as well as the...
Jeffrey Birt
jeff_birt2000
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Dec 4, 2004
3:06 pm
21202
I have been watching the progress of this USB box at the yahoo group "geckodrive" designed for the machine tool crowd. The current specification, while...
andyolney
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Dec 4, 2004
5:33 pm
Messages 21173 - 21202 of 41170   Oldest  |  < Older  |  Newer >  |  Newest
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