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1  Forum 2005-2010 (read only) / Troubleshooting / Re: newbie: pull up resistor on: June 23, 2006, 08:31:08 am
so that's how it works at my c-control which is based on the amtel ATmega32
2  Forum 2005-2010 (read only) / Troubleshooting / newbie: pull up resistor on: June 19, 2006, 10:32:40 am
Hi,
is it possible to set a pull up resistor after defining a pin as INPUT?
Nothing about that in the tiny reference. If not, what can I do? Solder?

have fun

fritz
3  Forum 2005-2010 (read only) / Troubleshooting / Re: How many SERVOS are possible with the ARDUINO? on: July 03, 2006, 06:45:45 am
have you tested your script without the servos connected? Probably you've reached the maximum power level... how much mA do your servos need?
4  Forum 2005-2010 (read only) / Troubleshooting / Re: cmos interface on: May 30, 2006, 01:33:56 pm
sorry, forgotten something: 4016 works from +3volts up to +15volts.

fritz
5  Forum 2005-2010 (read only) / Troubleshooting / Re: cmos interface on: May 30, 2006, 01:32:24 pm
Most of the cmos parts operate up to 18 volts. If your device doesn't probably you can use a cmos switch 4016 / 4066 to have the circuits separated. That should work up to 16 Mhz. But, please read the datasheets carefully.

fritz
6  Forum 2005-2010 (read only) / Troubleshooting / Re: Freaky Battery on: May 30, 2006, 01:24:17 pm
Just take a look at your application board. There you can find an ic named 78xx05 or something. This is for voltage regulation. 05 means 5 Volt. But you need some more parts around. Take a look at the data sheet http://www2.produktinfo.conrad.com/datenblaetter/150000-174999/156048-da-01-en-SPANNUNGSREGLER_L7805CV_STM.pdf

fritz
7  Forum 2005-2010 (read only) / Interfacing / Re: Multiply the analog Outputs up to 12 channels on: September 09, 2006, 06:38:28 am
you can use normal outputs and a software pwm to do the job. but that's very slow
8  Forum 2005-2010 (read only) / Interfacing / Re: Keypad Interface for door opening with PIN o-t on: September 09, 2006, 06:35:14 am
you can find something on the c control elvaluation board:
9  Forum 2005-2010 (read only) / Interfacing / Re: 12v PWM? on: September 09, 2006, 06:30:58 am
I did something similar with another uC and 10 V (12V supply).
Probably you can use this.

/me
10  Forum 2005-2010 (read only) / Interfacing / Re: measure disctance through plastic material on: September 09, 2006, 06:21:56 am
plastic is no problem, but probably calibration will be...
11  Forum 2005-2010 (read only) / Interfacing / Re: L293NE stepper control on: July 03, 2006, 06:57:40 am
can you draw your configuration?
Prob you need:
  -L293NE              4 pins   out
  -Pushbutton         1 pin    in
  -IR                     1 pin     in
  -COM          appr. 4 pins   in&out
                           --------
                           10 pins

RTFM & start with something as simple as possible
  
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