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by GAEvakYD
Thu Jun 21, 2012 7:20 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

Anyone here with good tips for a newbie like me. I want to exclude a few things, for example the transistor and potmeter. I've a multimeter to measure the voltage between some components.
by GAEvakYD
Wed Jun 20, 2012 3:35 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

hmmm I've tried what you said. Disconnect the GPIO port and leeve the rest as is. When there's no pulse i see 3.26V between the two legs of transistor. When there's a pulse the voltage is complete different. Sometimes 3.15V but sometimes 3.50 / 3.61 / 3.85V etc. I've changed the potmeter a lot, with...
by GAEvakYD
Tue Jun 19, 2012 8:41 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

Today I started to solder the two setups. I've started with the test setup with the switch. This works great. Default the GPIO port is value 1 and when I pushed the button the value become 0. Nice. After this I started with setup two, the phototransistor. This setup drives me crazy after a lot of tr...
by GAEvakYD
Wed Jun 13, 2012 6:30 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

Ok, so this are the final two setups I need?
http://ordelman.org/tmp/input_switch.JPG
http://ordelman.org/tmp/final.png

What is the sense for the pot meter? I want to read 0 or 1, is there no average value to add with a resistor?
by GAEvakYD
Wed Jun 13, 2012 1:41 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

Try this for the photo tranny, although you'll proably need to omit the pull-down, ie connect the emitter to 0volts (GND) : Thanks. One last questions: what you mean with the 10K pot? Does my dutch electronic company understand this keyword? is there a difference between a 100Ohm resistor and a 100...
by GAEvakYD
Wed Jun 13, 2012 12:50 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

AndrewS wrote:
GAEvakYD wrote:Are these two schema a good conclusion?
Two connections to GND? I don't think they'd do much ;)
Aiiiii, big mistake. I've edited the two files. Looks better?
by GAEvakYD
Wed Jun 13, 2012 10:59 am
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

Are these two schema a good conclusion?

First to test the GPIO input without the transistor:
Image

Last the final setup with transistor instead of switch
Image
by GAEvakYD
Wed Jun 13, 2012 7:19 am
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

That Arduino example is quite simple to understand for me. :) -So to test the GPIO digital input I could use that diagram from Arduino? With a switch and a 10k pullup resistor and no 100Ohm resistor? With the only difference the PI must be connected to the 3.3V and not like the arduino on the 5V. ht...
by GAEvakYD
Tue Jun 12, 2012 6:34 pm
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

3.3V------------------+---- | - | | 10k | | | | - | | switch | + +---------+------------- GPIO / / + | - | | 100 ohm | | | | - | | GND-----+---- Thanks, this is the option to test the GPIO input? Am I right that the left side of the swith must be connected to GND? I liked this low level drawing for...
by GAEvakYD
Tue Jun 12, 2012 8:57 am
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

Re: GPIO PI Beginners question

After a long time of programming my C++ tool I finally found some time to fix the hardware stuff for my GPIO project. Thanks for mahjongg for the detailed answer. Sad to see that my knowhow about hardware is so minimal. Hopefully you guys would help me a little bit so I know what to buy and to solde...
by GAEvakYD
Sun May 13, 2012 5:48 pm
Forum: Troubleshooting
Topic: Using SAMBA will hang up device
Replies: 6
Views: 2417

Re: Using SAMBA will hang up device

hmmmm get this from the smb.log [2012/05/13 18:16:15.405650, 0] lib/fault.c:47(fault_report) INTERNAL ERROR: Signal 7 in pid 1430 (3.5.6) Please read the Trouble-Shooting section of the Samba3-HOWTO [2012/05/13 18:16:15.405953, 0] lib/fault.c:49(fault_report) From: http://www.samba.org/samba/docs/Sa...
by GAEvakYD
Sun May 13, 2012 5:17 pm
Forum: Troubleshooting
Topic: Using SAMBA will hang up device
Replies: 6
Views: 2417

Re: Using SAMBA will hang up device

I've did the manually update from Hexxeh but still the same problem.

Is there a way to look in a errorlog what the last error was before crashing>?
by GAEvakYD
Sun May 13, 2012 2:48 pm
Forum: Troubleshooting
Topic: Using SAMBA will hang up device
Replies: 6
Views: 2417

Re: Using SAMBA will hang up device

Thanks. Must I upgrade this manually or is it integrated already in one of the new images.
by GAEvakYD
Sun May 13, 2012 7:03 am
Forum: Troubleshooting
Topic: Using SAMBA will hang up device
Replies: 6
Views: 2417

Using SAMBA will hang up device

I've working with this great device for a several days. Look all the things are working normal. Yesterday I've installed Samba to use the PI as a networkdisk from my Windows computers. The problem I've is that after copying a lot of files my PI stops working. Can't ping it anymore, only reboot by po...
by GAEvakYD
Sun May 13, 2012 6:41 am
Forum: Beginners
Topic: GPIO PI Beginners question
Replies: 31
Views: 12287

GPIO PI Beginners question

Hi, Can somebody tell me if the following is correct? I want to use the PI to read out some photo transistor to follow the LED pulse of the electricity meter. Can I connect a phototransistor between the 3.3V line and a GPIO port (0-7)? On other boards people are using a 4K7 resistor between the 3.3V...
by GAEvakYD
Sun May 06, 2012 8:27 pm
Forum: General discussion
Topic: Wiring for the Raspberry Pis GPIO
Replies: 20
Views: 8472

Re: Wiring for the Raspberry Pis GPIO

Wow nice, thank you very very much. Would use it for my project.
by GAEvakYD
Sat Sep 10, 2011 8:09 am
Forum: General discussion
Topic: How would you use a Raspberry Pi device?
Replies: 514
Views: 219326

Re: How would you use a Raspberry Pi device?

<r>I'd like to use it as replacement of my EnergyCounter, currently working on my TP link router. I've solderd a phototransistor to a unused GPIO port of the router, but that's the only one. I needed a couple of GPIO ports to also monitor gas, water, temp, etc etc.<br/> <br/> The router runs a custo...

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