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by TommyboyNL
Thu Jul 05, 2012 11:30 am
Forum: HATs and other add-ons
Topic: PAL-decoder?
Replies: 12
Views: 4694

Re: PAL-decoder?

After playing with some values in config.txt, I managed to get the console to almost fill the screen. The text is even semi-readable! I used the following settings: disable_overscan=1 sdtv_mode=2 sdtv_aspect=1 overscan_left=27 overscan_right=27 overscan_top=16 overscan_bottom=4 framebuffer_width=640...
by TommyboyNL
Thu Jul 05, 2012 11:26 am
Forum: Troubleshooting
Topic: LEDs flash but display is off
Replies: 2
Views: 600

Re: LEDs flash but display is off

Pull the plug.
by TommyboyNL
Thu Jul 05, 2012 9:25 am
Forum: HATs and other add-ons
Topic: PAL-decoder?
Replies: 12
Views: 4694

Re: PAL-decoder?

Neighbour just got home, and I just got my display. Unfortunately, the seller was a little bit optimistic in his description: The display is only 320x240, and NOT the advertised 640x480... Anyhow, it works, but NOT as good as I wanted. I'm leaving the display in one piece, until I have resolved this...
by TommyboyNL
Thu Jul 05, 2012 8:41 am
Forum: HATs and other add-ons
Topic: PAL-decoder?
Replies: 12
Views: 4694

Re: PAL-decoder?

My 3,5" screen is with my neighbours now (I wasn't at home when the mailman tried to deliver it). One I've got it in my hands, I'll dismantle it, and report on its hackability, such as power/voltage requirements, exact screen size (so I/we can start looking for a cheep touch panel), etcetera. I paid...
by TommyboyNL
Thu Jul 05, 2012 8:37 am
Forum: HATs and other add-ons
Topic: SD card sticking out ? Use RSMMC
Replies: 56
Views: 33633

Re: SD card sticking out ? Use RSMMC

My 16GB class10/UHS1 45MB/s SanDisk card has a clear-like casing, and is only half-full, so it's possible to cut those in half.
by TommyboyNL
Wed Jul 04, 2012 8:19 pm
Forum: HATs and other add-ons
Topic: PAL-decoder?
Replies: 12
Views: 4694

Re: PAL-decoder?

Why don't you want to use a $20 640x480 composite display, available on eBay?
by TommyboyNL
Wed Jul 04, 2012 11:18 am
Forum: Other projects
Topic: Yep - another cheap touchscreen question..
Replies: 2
Views: 2480

Re: Yep - another cheap touchscreen question..

Or just buy a $20 640x480 composite LCD from eBay...
by TommyboyNL
Tue Jul 03, 2012 7:59 pm
Forum: HATs and other add-ons
Topic: Debug cable and USB hub from FTDI
Replies: 5
Views: 2939

Re: Debug cable and USB hub from FTDI

Doh. It is designed to work with the Pi!
by TommyboyNL
Tue Jul 03, 2012 1:37 pm
Forum: Debian
Topic: unable to access crontab
Replies: 6
Views: 2680

Re: unable to access crontab

Why don't you just use 'crontab -e'?
by TommyboyNL
Mon Jul 02, 2012 9:07 am
Forum: Troubleshooting
Topic: Pi potentially broke my TV
Replies: 31
Views: 7728

Re: Pi potentially broke my TV

I just hooked up my Farnell Pi up to my Samsung Syncmaster T240HD over HDMI, and can measure 1V35 on the 5V power rail (nothing else is connected). This means there IS power leaking from the HDMI circuitry. I didn't try loading the 5V line with a resistor, out of fear of blowing up my TVs HDMI port,...
by TommyboyNL
Fri Jun 29, 2012 1:56 pm
Forum: Python
Topic: Script gets Current IP
Replies: 7
Views: 3168

Re: Script gets Current IP

'hostname -i' returns 127.0.0.1, 'hostname -I' returns your external IP. I use the following script to print my Pi's two IPs to two HD44780 LCD I connected over SPI: #! /bin/sh ./bw_lcd -a 80 -C ./bw_lcd -a 82 -C ./bw_lcd -a 80 -T 0,0 'My wlan0 IP is' ./bw_lcd -a 80 -T 0,1 `/sbin/ifconfig wlan0 | se...
by TommyboyNL
Tue Jun 26, 2012 11:48 pm
Forum: Automation, sensing and robotics
Topic: Stepper Motor Project
Replies: 15
Views: 10216

Re: Stepper Motor Project

The BitWizard board has PWM implemented, so you can control the drive intensity. It can drive one stepper, or two regular motors, but not two steppers (unless they both need to do the same, then they can be connected in parallel). Anyway, for some uses it's an ideal board, and for some, just to fanc...
by TommyboyNL
Tue Jun 26, 2012 11:03 pm
Forum: Automation, sensing and robotics
Topic: Stepper Motor Project
Replies: 15
Views: 10216

Re: Stepper Motor Project

That solution only works for low-powered (0,5A max per coil) unipolar stepper motors. The BitWizard PCB can handle upto 5A per coil, and can also drive bipolar steppers, and takes control of all the timing. You just tell the unit how many steps to, euh, step, and you're done.
by TommyboyNL
Tue Jun 26, 2012 3:07 pm
Forum: Graphics, sound and multimedia
Topic: Hi can anyone help connecting a 2x16 LCD
Replies: 9
Views: 6737

Re: Hi can anyone help connecting a 2x16 LCD

I'm also one of the BitWizard guys. I suggest buying the SPI version, we've written a program to allow you to easily control our SPI LCDs: http://www.bitwizard.nl/wiki/index.php/ ... CD_program

Good luck, and don't hesitate to ask for help, if you don't get it to work!
by TommyboyNL
Tue Jun 26, 2012 3:00 pm
Forum: Automation, sensing and robotics
Topic: Stepper Motor Project
Replies: 15
Views: 10216

Re: Stepper Motor Project

BitWizard is selling a stepper motor driver with SPI or I2C interface: I2C: http://www.bitwizard.nl/catalog/product_info.php?cPath=34&products_id=83 SPI: http://www.bitwizard.nl/catalog/product_info.php?cPath=34&products_id=88 This driver has an on-board controller, which takes all of the timing req...
by TommyboyNL
Tue Jun 26, 2012 12:05 pm
Forum: Other projects
Topic: Useful Screen, or Useless Garbage? RePicyling?
Replies: 10
Views: 4603

Re: Useful Screen, or Useless Garbage? RePicyling?

Please post some pictures of the driving board, that'll make helping you a lot easier.
by TommyboyNL
Tue Jun 26, 2012 12:03 pm
Forum: Other projects
Topic: Connecting LCD EA DIP204B-4NLW
Replies: 1
Views: 1713

Re: Connecting LCD EA DIP204B-4NLW

It should word, your display is HD44780 compatible. You can also consider hooking your display up to this module: http://www.bitwizard.nl/catalog/product_info.php?cPath=34&products_id=68 This gives your display an SPI interface, and enables you to use this program: http://www.bitwizard.nl/wiki/index...
by TommyboyNL
Tue Jun 26, 2012 11:55 am
Forum: Other projects
Topic: Controlling some motors and using a battery pack with RasPi
Replies: 6
Views: 3134

Re: Controlling some motors and using a battery pack with Ra

You can't drive a motor with the GPIO directly, they can't deliver enough power. If your motors only need to turn one way, you will only need a couple of FETs. If you want your motors to be able to rotate both ways, you'll need to use a H-bridge, of completed motor driver. BitWizard sells a motor dr...
by TommyboyNL
Tue Jun 19, 2012 11:06 pm
Forum: Other projects
Topic: Announcing: RPI_SERIAL: breaks out the serial busses of the GPIO
Replies: 15
Views: 9583

Re: Announcing: RPI_SERIAL: breaks out the serial busses of

That was an error on my behalf, it's fixed now. Good luck, and have fun! Some tips/possible useful things: sudo ./bw_lcd -T 0,0 `hostname -I` prints your IP address. sudo ./bw_lcd -p 0,0 -t `date +%m/%d/%Y` prints the current date in my preferred format. Have a look at the following page for a more ...
by TommyboyNL
Tue Jun 19, 2012 3:58 pm
Forum: Other projects
Topic: Announcing: RPI_SERIAL: breaks out the serial busses of the GPIO
Replies: 15
Views: 9583

Re: Announcing: RPI_SERIAL: breaks out the serial busses of

Sorry for the 3 consecutive posts, but I cant edit non-approved posts...

I uploaded an image to WeTransfer: http://wtrns.fr/2-qU3JUp1wkveBq
Write it to your SD card, and you're ready to go.
Put the SD card in your pi, let it go through its first boot, reboot, compile, and done!

Good luck!
by TommyboyNL
Tue Jun 19, 2012 3:39 pm
Forum: Other projects
Topic: Announcing: RPI_SERIAL: breaks out the serial busses of the GPIO
Replies: 15
Views: 9583

Re: Announcing: RPI_SERIAL: breaks out the serial busses of

This is exactly what I did: mkdir rpi cd rpi wget http://files.velocix.com/c1410/images/debian/6/debian6-19-04-2012/debian6-19-04-2012.zip wget http://www.bitwizard.nl/software/rpi-spi-binary-kernel-20120608.tgz wget http://www.bitwizard.nl/software/bw_lcd.c tar -xzvf rpi-spi-binary-kernel-20120608....
by TommyboyNL
Tue Jun 19, 2012 2:11 pm
Forum: Other projects
Topic: Announcing: RPI_SERIAL: breaks out the serial busses of the GPIO
Replies: 15
Views: 9583

Re: Announcing: RPI_SERIAL: breaks out the serial busses of

The display is showing it's boot-up message, meaning you hooked up the power properly. I suspect something went wrong with copying the kernel modules. Does your pi have the following files? /lib/modules/3.1.9+/kernel/drivers/spi/spidev.ko /lib/modules/3.1.9+/kernel/drivers/spi/spi-bcm2835.ko If so, ...
by TommyboyNL
Mon Jun 18, 2012 4:39 pm
Forum: Other projects
Topic: Announcing: RPI_SERIAL: breaks out the serial busses of the GPIO
Replies: 15
Views: 9583

Re: Announcing: RPI_SERIAL: breaks out the serial busses of

I just wrote a howto for controlling the SPI_LCD module: http://www.bitwizard.nl/wiki/index.php/ ... spberry_Pi
If you still can't get it to work, please say so, and we will try and help you.

And a simple showcase i just made:
http://www.youtube.com/watch?v=enJEksPqWqo

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