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Re: BASCOM AVR RS485 PRINT/INPUT STRING PROBLEM - HELP!!!

 by StigOE ¦  Tue Mar 22, 2011 3:11 am ¦  Forum: Code ¦  Topic: BASCOM AVR RS485 PRINT/INPUT STRING PROBLEM - HELP!!! ¦  Replies: 3 ¦  Views: 5670

Looking at the BASCOM-AVR help, it looks like you need to use Config Print0 = Porte.2 , Mode = Set ' use portd.2 for the direction Rs485dir Alias Pine.2 ' Pine.2 instead of Porte.2 Config Rs485dir = Output You also shouldn't need to set the direction when sending. Bascom does that automatically. Stig

Re: C328 camera + PIC + uSD card

 by StigOE ¦  Sat Feb 26, 2011 10:28 am ¦  Forum: SparkFun Product Questions ¦  Topic: C328 camera + PIC + uSD card ¦  Replies: 9 ¦  Views: 1611

The previous project I linked to is actually using the same camera. I just mixed it up with the type of camera I have at home... :)

Stig

Re: C328 camera + PIC + uSD card

 by StigOE ¦  Sat Feb 26, 2011 7:03 am ¦  Forum: SparkFun Product Questions ¦  Topic: C328 camera + PIC + uSD card ¦  Replies: 9 ¦  Views: 1611

Here is the winning project in a Circuit Cellar contest doing the same thing, but with a different camera and an AVR Mega32, so it should be possible to get something similar done with a PIC. Disclaimer: I don't know anything about the C328 camera...

Stig

Re: Juggling balls (with xbee + accellero)

 by StigOE ¦  Sun Feb 20, 2011 12:36 am ¦  Forum: SparkFun Product Questions ¦  Topic: Juggling balls (with xbee + accellero) ¦  Replies: 17 ¦  Views: 1928

Just curious - have you tested this yet? When in free-fall, how do you tell if the ball is going up, versus going down, if there is no gravity measured? If the ball is going up, wouldn't it measure more than 1g? When going down, it should measure 0g, so it should be possible to know whether the bal...

Re: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v

 by StigOE ¦  Sun Feb 06, 2011 2:56 am ¦  Forum: SparkFun Product Questions ¦  Topic: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v ¦  Replies: 18 ¦  Views: 2633

The blink sketch works in 5v mode but not in 3.3v mode.! That would indicate that the microcontroller isn't starting at 3V3, since you've verified that it's not in a reset-state because of a low voltage on the reset-pin. Since you're using the Arduino environment, I don't think you can change it to...

Re: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v

 by StigOE ¦  Sat Feb 05, 2011 4:24 am ¦  Forum: SparkFun Product Questions ¦  Topic: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v ¦  Replies: 18 ¦  Views: 2633

Very strange... Is LED2 or LED3 flashing when you try the serial? One way to check if the actual microcontroller is actually running with 3V3, is to just program it with a simple flasher program under 5V (as was suggested earlier), change it back to 3V3 and connect up a LED to the pin specified in t...

Re: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v

 by StigOE ¦  Fri Feb 04, 2011 9:11 am ¦  Forum: SparkFun Product Questions ¦  Topic: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v ¦  Replies: 18 ¦  Views: 2633

In theory, your circuit should work... :-) Since you don't have an oscilloscope, it's difficult to make sure the oscillator is working. You could also try to bypass the 1k resistors on the datalines. That's the only things I can think of which could make a problem.

Stig

Re: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v

 by StigOE ¦  Fri Feb 04, 2011 4:38 am ¦  Forum: SparkFun Product Questions ¦  Topic: FTDI FT232RL + AtMega328 @8MHz - works with 5v but not 3.3v ¦  Replies: 18 ¦  Views: 2633

From looking at your schematic, I think you need to connect FT232 Vcc to USB 5V and connect VccIO to 3V3Out. This would give you 3V3 for the datalines and 5V for your battery charger and LDO. All the bus-powered examples in the datasheet uses 5V for Vcc even for 3V3 operation.

Stig

Re: Making a Plated Through Hole in a copper clad board

 by StigOE ¦  Mon Oct 18, 2010 12:25 pm ¦  Forum: PCB Design Questions ¦  Topic: Making a Plated Through Hole in a copper clad board ¦  Replies: 7 ¦  Views: 2209

kd5crs wrote:Second, how do you cut this stuff? Just a hacksaw? I've seen some really expensive guillotine cutters, but is there an effective cheaper method in use?
A Dremel with a diamond disc works very good. Cuts fairly quick and leaves a clean cut.

Re: Help - New project using Arduino mini Pro

 by StigOE ¦  Sun Oct 10, 2010 9:15 am ¦  Forum: SparkFun Product Questions ¦  Topic: Help - New project using Arduino mini Pro ¦  Replies: 3 ¦  Views: 595

Anyone know from where I can find those or can share some ideia to make the switch pole longer? You can use thin aluminium rods cut to length, use superglue and glue them to the switch poles. If you have access to a lathe, you can make them whatever diameter you want and can get flat ends. That's w...

Re: Help - New project using Arduino mini Pro

 by StigOE ¦  Sat Oct 09, 2010 9:35 am ¦  Forum: SparkFun Product Questions ¦  Topic: Help - New project using Arduino mini Pro ¦  Replies: 3 ¦  Views: 595

You risk shorting tracks on the mini pro to tracks on your 'motherboard' if you don't use header pins. Besides, are you sure that you would get a good connections between the boards? And it also looks like your battery holder is higher than the mini pro, making it a higher risk of shorting something...

Re: Putting stuff like holes and motors in Eagle schematic?

 by StigOE ¦  Sat Oct 09, 2010 2:13 am ¦  Forum: PCB Design Questions ¦  Topic: Putting stuff like holes and motors in Eagle schematic? ¦  Replies: 3 ¦  Views: 1120

For the motor connection, just find a suitable 2-pin connector and put in the schematic. Then set the value of the connector to 'Motor' or whatever you want. Or if you want to learn some more about Eagle, read the tutorial, either the included tutorial or the ones on Sparkfun, and a make a device fo...

Re: Putting stuff like holes and motors in Eagle schematic?

 by StigOE ¦  Thu Oct 07, 2010 11:11 pm ¦  Forum: PCB Design Questions ¦  Topic: Putting stuff like holes and motors in Eagle schematic? ¦  Replies: 3 ¦  Views: 1120

What device are you using for your motor? Is it just 'Motor' as text and two wires ending above and below the text? If so, that's your problem. You need to use some kind of device with both a symbol and a footprint. Otherwise, how would Eagle know how you wanted to connect your motor? Same goes for ...

Re: Whoops - Reverse voltage!

 by StigOE ¦  Tue Oct 05, 2010 9:14 am ¦  Forum: PCB Design Questions ¦  Topic: Whoops - Reverse voltage! ¦  Replies: 11 ¦  Views: 1832

Looks like the Duemilanove uses a MC33269D which is a SO8 package so LM1117MPX isn't a substitute for this. I don't have a Duemilanove handy so I can't verify this.

Edit: Mouser has them in stock. Part number 863-MC33269D-5.0G

Re: Whoops - Reverse voltage!

 by StigOE ¦  Tue Oct 05, 2010 7:24 am ¦  Forum: PCB Design Questions ¦  Topic: Whoops - Reverse voltage! ¦  Replies: 11 ¦  Views: 1832

3Dawn wrote:Sorry but I didn't see any reference to the regulators. I will check them if I can figure out where they are.
I did say in my post 'check the voltage regulator(s)'... On the Duemilanove, the voltage regulator is IC4. On the Mega there are two voltage regulators, IC4 and IC5.

Stig