Search found 514 matches
- Mon Jul 18, 2011 6:27 pm
- Forum: Flowcode V4
- Topic: driving a 1phase induction motor?
- Replies: 9
- Views: 6345
Re: driving a 1phase induction motor?
@ JhonCrow I'm using National Instruments Multisim v11.0 @ Medelec I think I want to use a lookup table. because I would like drive this with an Microcontroller and digital input not analoge. Instead of an pot. meter I want to use up-down buttons to change the frequentie. the data of the sine wave w...
- Mon Jul 18, 2011 5:27 pm
- Forum: Flowcode V4
- Topic: driving a 1phase induction motor?
- Replies: 9
- Views: 6345
Re: driving a 1phase induction motor?
Hi medelec, Your idea would indeed work, but the problem is that I want to control the speed of my motor. But I think I have an idea. Maybe I can build something like this: http://img641.imageshack.us/img641/7130/concept1phaseinverter.png I think I can drive the two mosfets by an PWM single, where t...
- Sun Jul 17, 2011 2:41 pm
- Forum: Flowcode V4
- Topic: driving a 1phase induction motor?
- Replies: 9
- Views: 6345
Re: driving a 1phase induction motor?
Can you explain in more detail how to control my motor with option (2) -> FET
I'm very interesting.
I dont know what you exactly mean, hope you can explain with some schematics.
Thanks Jordy
I'm very interesting.
I dont know what you exactly mean, hope you can explain with some schematics.
Thanks Jordy
- Sun Jul 17, 2011 11:55 am
- Forum: Flowcode V4
- Topic: driving a 1phase induction motor?
- Replies: 9
- Views: 6345
driving a 1phase induction motor?
Hi all, I have done some research on this item on how to drive a single phase induction motor or an 3 phase motor. How I would like to do this is as follow. For driving a 1 phase induction motor I want to build something like this that controll de sinus wave from. http://img577.imageshack.us/img577/...
- Thu Jun 23, 2011 10:53 pm
- Forum: Flowcode V4
- Topic: Voltmeter question
- Replies: 3
- Views: 2700
Voltmeter question
He guys, its been a while busy with school and work but I started a new project to learn more about electronic components such as op amps and other stuff. I'm planning to make a micro controlled power supply. I started with a simple voltage meter from 0-5V and it works great. the only wired thing is...
- Sat May 21, 2011 5:43 pm
- Forum: Flowcode V4
- Topic: Driving Piezo with PIC
- Replies: 44
- Views: 34407
Re: Driving Piezo with PIC
It depends, do you want to use you peizo buzzer to produce a continues tone. Also you need to know if your buzzer works with DC or AC. I case your peizo buzzer works with AC. you can make a multi vibrator that produces a block signal. You can also made a block signal using a standard LM742(i think b...
- Sun May 15, 2011 2:14 pm
- Forum: Flowcode V4
- Topic: Little Bit stuck with my project
- Replies: 7
- Views: 3579
Re: Little Bit stuck with my project
Thanks, I just wanted to post a reply to says its all working fine, I dint read you comment @ all :lol: But what you say is correct, I have just put a calculation block @ the begging of the DS1820_temp_set macro with the following calculation: keypad_press = 0 and uploaded it again and it works just...
- Sun May 15, 2011 12:30 pm
- Forum: Flowcode V4
- Topic: Little Bit stuck with my project
- Replies: 7
- Views: 3579
Re: Little Bit stuck with my project
Hi, Martin
The problem is still present, I have run the program in the simulator and it operating correctly.
But on the hardware, if I enter the first digit the cursor jumps immediately to position 9,1.
I dont know what the problem is, maybe you want to have a second look.
Thanks Jordy Kleian
The problem is still present, I have run the program in the simulator and it operating correctly.
But on the hardware, if I enter the first digit the cursor jumps immediately to position 9,1.
I dont know what the problem is, maybe you want to have a second look.
Thanks Jordy Kleian
- Sat May 14, 2011 10:57 pm
- Forum: Flowcode V4
- Topic: Little Bit stuck with my project
- Replies: 7
- Views: 3579
Re: Little Bit stuck with my project
Thanks Martin, Now It works but I have some trouble to get the following work: Setting the temperature works great but I don't want to just put in 245 I want it to be like this 24,5*C I have managed to get this to work in the flowcode simulator but on the hardware it doesn't work at all. The cursor ...
- Sat May 14, 2011 6:30 pm
- Forum: Flowcode V4
- Topic: Little Bit stuck with my project
- Replies: 7
- Views: 3579
Little Bit stuck with my project
Hi all, I'm a little but stuck here, Im being busy with aquarium controller and I have my DS1820 and keypad working correctly. What I'm trying to do is to set the temperature trash hold of my ds1820 so it let me know when the temperature is to high. I want to use my keypad for this, and i'm trying t...
- Thu May 12, 2011 9:48 pm
- Forum: Flowcode V4
- Topic: strange keypad reading
- Replies: 1
- Views: 1638
Re: strange keypad reading
Sorry, I have found my problem, The problem was that my Pull-down resistors where to small, If you dont have 100k resistors that you need to use with 10k 10k = collums 100k = rows if you dont have these you cant use 10k instead (stupid) You then need to use: 1k for the collums and 10k for the rows. ...
- Thu May 12, 2011 8:11 pm
- Forum: Flowcode V4
- Topic: strange keypad reading
- Replies: 1
- Views: 1638
strange keypad reading
Hi all, I have some trouble with my keypad that I have bought from Conrad.nl. This is the specific keypad: [urlhttp://www1.conrad.nl/scripts/wgate/zcop_nl3/~flNlc3Npb249UDkwX05MX0IyQzpDX0FHQVRFMTY6MDAwMS4wMGE2LmVkYmRmNDdlJn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT00MjgxODQ4OTk3====?~templ...
- Tue May 10, 2011 4:39 pm
- Forum: Flowcode V4
- Topic: I2C
- Replies: 5
- Views: 5695
Re: I2C
Hi Mario, I have taking a look at you flowcode program, And what I think is wrong is as follow; I understand that you are using a DS1307 (RTC) First thing I found is that you are not giving the DS1307 a read or write command. If you read the datasheet carefully you will notice that the DS1307 has a ...
- Mon May 09, 2011 6:58 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
First Off all, Thanks Ben for your'e support. Your solution is very nice, I like it a lot. What I dont like about your solution is that it uses floating point calculations, it uses much more flash memory then if you wont use it. but over all its very well done. But still floating point :shock: I tho...
- Mon May 09, 2011 4:06 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Thanks, Ben
I will try this to night, hope it works.
I will let you know.
Regards Jordy
I will try this to night, hope it works.
I will let you know.
Regards Jordy
- Fri May 06, 2011 5:59 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hi ben sorry for the late response,
Here is my program
Thanks
Regards Jordy
Here is my program
Thanks
Regards Jordy
- Thu May 05, 2011 7:31 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Here is the link to the datasheet : http://datasheets.maxim-ic.com/en/ds/DS18S20.pdf
Hope you can help me.
Thanks,
Regards Jordy
Hope you can help me.
Thanks,
Regards Jordy
- Thu May 05, 2011 3:51 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hi ben thanks for your reply, How do I use the Costume Code to edit the code for the function DS1820_get_temp Would you mind to explain to my how that can be done. I would really appreciate it. And no i dont know how to combine the scratch pad values to get a better resolution. Hope you can explain ...
- Thu May 05, 2011 11:56 am
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hé Ben, Maybe you can explain me how I can have a better resolution. I have now a resolusion of 0.5 but it would be nice if I can get this to 0.1 I have read about that on many forums and also in the datasheet, but I dont know how I can do that. I know that I need information from the scratchpad I t...
- Wed May 04, 2011 11:24 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hi, again :mrgreen: I have some important news I build it I test it I hath a problem And finally I fixed it. Yes, Yes It works thanks to the datasheet that I have read over and over again (10x) The datasheet says that if the DS1820 puts out a value of 85C its a default value on power-up. And it also...
- Wed May 04, 2011 6:44 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hi, again I have done something but I dont know what to do with it. I have add the getpadbyte function into my program to see what the values are of the different addresses of the scratchpad. So I have pointed the index byte to: 0 = LSB 1 = MSB 6 = Count_Remain 7 = Count_P_"C 8 = CRC What I found wa...
- Wed May 04, 2011 10:55 am
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
Re: DS18S20 Temp. Reading (HELP)
Hi, all I have made some changes to the program just to see if there is time-out and if it reads the scratch pad correctly. On the display you will see: StrConv = DS1820_Start_Conversion return value <<<< this must be a 0 otherwise the DS18S20 has a time-out RdScrat = DS18S20_Read_Scratchpad return ...
- Tue May 03, 2011 11:33 pm
- Forum: Flowcode V4
- Topic: DS18S20 Temp. Reading (HELP)
- Replies: 22
- Views: 10922
DS18S20 Temp. Reading (HELP)
Hi, everyone I have bought 2 DS18S20-PAR digital temperature sensors, to implement into my aquarium controller. Ad first I had an analogue sensor KTY26-1 witch you have to make a lookup table to determine what the temperature is. Now I understand How I need to do this, Thanks a lot for your help peo...
- Sat Apr 16, 2011 10:15 pm
- Forum: Flowcode V4
- Topic: 18F4455 Crystal ???
- Replies: 3
- Views: 2510
18F4455 Crystal ???
HI Guys, I have one small question, I recently bought a PIC18F4455 Microcontroller. But I dont have the wright Crystal. On my EB006 board there is an 19.6608 MHz crystal. But the 18F4455 doesn't work @ that frequency. I want to use the USB functionality of this device, I don't care for Full ore Low ...
- Tue Apr 12, 2011 9:29 am
- Forum: Flowcode V4
- Topic: Aquarium Controller Temp. reading question?
- Replies: 20
- Views: 10701
Re: Aquarium Controller Temp. reading question?
Almost, The temperature reading is working correctly. The update time of one min. Is working fine. The only Thing thing that's not completely working, is the notification of The temp. To high to low. But that only needs math. The next step is to make room for an ph sensor, current sensing circuit. A...