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by phamthanhnam
Sat Mar 22, 2014 3:35 pm
Forum: General discussion
Topic: Using the Pi as an answering machine
Replies: 1
Views: 1426

Re: Using the Pi as an answering machine

If you want to use Raspberry Pi with an old voice modem as an answering machine, it's possible with mgetty/vgetty. You can find many articles about Linux answering machine. I've made it. I plan to write a specific tutorial for Raspberry Pi soon. However, I got the same problem as yours: I can't use ...
by phamthanhnam
Wed Mar 19, 2014 3:21 pm
Forum: Automation, sensing and robotics
Topic: L298N vs L9100S Stepper Motors
Replies: 3
Views: 2484

Re: L298N vs L9100S Stepper Motors

I confirm that L298N works with Raspberry Pi. You can also control motor speed using pulses. Just don't use GPIO pins to feed your motors (1 small stepper motor is OK), use an external power source instead. On L298N, I had to use Vcc pin (12V input) instead of +5V pin to connect to the +5V battery p...
by phamthanhnam
Wed Mar 19, 2014 3:05 pm
Forum: Graphics, sound and multimedia
Topic: using Rasp Pi model B for car display/video
Replies: 1
Views: 678

Re: using Rasp Pi model B for car display/video

For display, yes, but your display should use its own power source.
For USB thumbdrive, I am not sure if you can connect it directly into Raspberry Pi USB port (there may not be enough current). Try to use a powered USB hub.
Power for Raspberry Pi: voltage = +5V, current >= 1A (2A is recommended).
by phamthanhnam
Tue Mar 18, 2014 2:28 pm
Forum: Graphics, sound and multimedia
Topic: [Tutorial] Making time-lapse video with Raspberry Pi
Replies: 55
Views: 60446

[Tutorial] Making time-lapse video with Raspberry Pi

Hi all, Making time-lapse videos is one of fun things you can do with Raspberry Pi. I bet you have found many solutions somewhere out there for this technique. However I write this tutorial because my solution has many advantages that don't exist in other tutorials, for example: - You can use Raspbe...
by phamthanhnam
Wed Mar 12, 2014 4:45 pm
Forum: Arch
Topic: Loading lirc_rpi on boot
Replies: 2
Views: 4130

Re: Loading lirc_rpi on boot

The simplest way is to add a line in /etc/modules, for example:

Code: Select all

lirc_rpi gpio_in_pin=0 gpio_out_pin=1
by phamthanhnam
Tue Oct 08, 2013 4:55 pm
Forum: Automation, sensing and robotics
Topic: IR Transmitter
Replies: 12
Views: 48865

Re: IR Transmitter

I've made an IR transmitter for Raspberry Pi. You can nearly use any popular NPN transistor (not necessarily the same as in schemas that you found). However you need to check its datasheet to know its pin layout and some parameters (Ic max - the maximum current through the collector pin, hFE min - t...
by phamthanhnam
Sat Sep 28, 2013 6:01 am
Forum: Automation, sensing and robotics
Topic: Raspberry Pi Robot for everyone
Replies: 2
Views: 1112

Re: Raspberry Pi Robot for everyone

And next demo video, an advancement for the project:
http://www.youtube.com/watch?v=Jai2TSk795g
by phamthanhnam
Fri Sep 27, 2013 12:53 pm
Forum: Automation, sensing and robotics
Topic: Raspberry Pi Robot for everyone
Replies: 2
Views: 1112

Raspberry Pi Robot for everyone

Hi, I've made a mobile robot (or maybe a toy vehicle), using Raspberry Pi. It can be controlled by using wireless mouse. Check out this video: In action: http://www.youtube.com/watch?v=NiZp8JlRS18 Final test phase: http://www.youtube.com/watch?v=c4YxWXNhDro I will write a detailed tutorial to show y...
by phamthanhnam
Tue Sep 24, 2013 1:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: L298N recap...
Replies: 11
Views: 3445

Re: L298N recap...

raspberrypiguy1 wrote:No one?

The Raspberry Pi Guy
Try this simple method:

Code: Select all

while True:
    try:
        # ... code to spin motors here
    except KeyboardInterrupt:
        print "Stop now"
        gpio.cleanup()
        break
by phamthanhnam
Sat Jul 27, 2013 5:23 pm
Forum: Graphics, sound and multimedia
Topic: Pi... Pi... It's P in Piano. The idea came true.
Replies: 8
Views: 6702

Pi... Pi... It's P in Piano. The idea came true.

Hi everybody, I've got success in my first project with Raspberry Pi: building a musical instrument (currently, a piano) using Raspberry Pi. I call it Rasp Piano. It can create high quality sound as a real piano. The difference, you need a different skill to play the piano. :lol: It is very easy to ...

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