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by bercioiu
Sun Dec 23, 2012 12:33 pm
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Re: 3 Axis Stepper Control

Hi S.K.S. You can use IRLZ44 instead of your IRFZ44. IRLZ44 is an logic level gate drive, this means that you don`t need anymore other component to drive the FET. Output pic will drive de FET directly, connecting the gate directly to the out pin of the pic. Here or here you can see some applications...
by bercioiu
Fri Dec 28, 2012 8:28 am
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Re: 3 Axis Stepper Control

I recently completed that project. is a standard controller and driver for stepper motors, based on logic gates, connected to the parallel port of the computer.With that type of controller-driver you can use any soft you have including EMC2, MACH3, KCam etc (all software that use parallel port). I d...
by bercioiu
Fri Dec 28, 2012 8:28 pm
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Re: 3 Axis Stepper Control

Hi Sire! Fist of all I`m not the designer for that project. I only executed that project following the schematic. As I wrote above, only for testing I was simulate the parallel signals with pic. I do not intend to use that controller in combination with a pic or something... I post that schematic fo...
by bercioiu
Sat Dec 29, 2012 8:02 pm
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Re: 3 Axis Stepper Control

The MOSFET is still Hot enough at 15V, i am planning to change the MOSFET. Do you have a chopper or a power resistor to limit the current to the motor? Anytime a power supply for the stepper motor is used that is greater than the rated voltage of the motor, current limiting is required. The coil re...
by bercioiu
Mon Dec 31, 2012 9:07 pm
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Re: 3 Axis Stepper Control

The motor is hot because all the current go through it. That motor will be fride in max 10 min without limiting the current ...
By the way : "HAPPY NEW YEAR" :D
by bercioiu
Tue Jan 01, 2013 3:05 pm
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Re: 3 Axis Stepper Control

You have right, in practice, we use smaller resistor, like you said, at the limit of the hot the motors... For example, my motors the required resistors are 10 ohms, but I put only 4 ohms and all motors are only slightly warm.. I reduced the resistor until I was satisfied with the torque of the moto...
by bercioiu
Sat Jan 05, 2013 1:04 pm
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Re: 3 Axis Stepper Control

Try this, i made some changes, hope its o.k. now. In case you can not compile, i attach. the hex file for you
by bercioiu
Tue Apr 09, 2013 2:08 am
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Re: Basic 8 Channel RC5 Infrared Remote Control

Hi Jorgen, http://www.matrixmultimedia.com/mmforums/download/file.php?id=6587 "In this picture is shown the shape of the complete RC5 packet, ready for transmission" As you can see bit0-bit2 are "potion" of the one packet transmission, for more detailed information, look at the F...
by bercioiu
Sat Apr 13, 2013 6:44 pm
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Re: Another voltmeter!

Hi Jorgen!
Thank you for sharing that with us!
I alter your flowchart and I made an simple voltmeter with some custom 7 segment display. It`s awesome :P
I attach the new flowchart and a photo with the voltmeter.
by bercioiu
Sun Apr 14, 2013 8:01 pm
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Re: Another voltmeter!

I noticed that was originally with that type of display because I saw the name of the variables. :P The flowchart is a little spread due to the type of display that I used. I forgot to translate in flowchart, "AFISAJ" stand for ANODE, and "CIFRA" for displayed digit. The last swi...
by bercioiu
Wed Jun 05, 2013 10:32 pm
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Re: 7SEG

If you put an output icon for the corresponding "g" segment (it depends on your connection in the connections settings of 7 segment component), the "-" sign will light...
by bercioiu
Fri Jul 05, 2013 12:35 am
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Re: Ibutton ds1990a configuration help.

Problem solved! :D Thank to a colleague of our forum - aura809 -, I understand how Ibutton work! It is quiet simple: First, you have to ensure that is an Ibutton on the bus with "00_scanbus" and if there is an Ibutton, read the serial number byte by byte with the "00_get_IDByte" ...
by bercioiu
Sun Jul 07, 2013 9:09 am
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Re: Ibutton ds1990a configuration help.

The FC its "on the way". I had to change the HW, because the RAM of the 683 was insufficient for that project. I use now 16F88 and 16x2 LCD. I don`t have much time to finished that... Mean while, I will post an example only with the part of the reading of the serial number. You will see, i...
by bercioiu
Wed Oct 29, 2014 5:02 pm
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Re: DS3231 on FCV5

I already solved, thanks for the support.
by bercioiu
Fri Nov 14, 2014 7:55 pm
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Re: DS3231 on FCV5

When will be ready, i`ll post all files. It is an wrist clock with 7 segment leds.
For the moment, I have some trouble with the charger on board for the Li-Po accu...
by bercioiu
Tue Nov 25, 2014 2:01 pm
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Re: Remote Control Handset "1"

Thanks for your reply!
In the mean time, I manage to alter your original flowchart with RC5 component and its working ok!
by bercioiu
Wed Apr 01, 2015 1:37 pm
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Re: RFID RC522

Thank you a lot for the reply and for the link! I did not know that blog,for me it is a fortune!
I have not worked with SPI yet but I will try, if I`ll get stuck, I`ll be back :-)
Thanks again!

Puiu,
by bercioiu
Fri Sep 04, 2015 3:44 pm
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Re: Water level tank

GetByte was the fist attempt...
I found mistake! After ADC, I have to put output in 1 (+5v), not in 0 (ground)...
In that way, after ADC measurement the 2 probe are on the same potential (no flow current between them).
Here are the schematic and the flowchart.
Thank you for the help!

Puiu
by bercioiu
Fri Sep 04, 2015 4:51 pm
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Re: Water level tank

Brilliant idea!
I made the modification and it`s working like a charm.
Thank you!

Edit schematic:
by bercioiu
Sat May 06, 2017 10:09 pm
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Re: SSD1306 Display SLOW

Thank you!
Problem solved with 0x78.
by bercioiu
Tue May 09, 2017 10:37 pm
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Re: Custom font size on GLCD

I'm getting closer :-)
The refresh of the segments is a little weak, but given that they are "drawn" I will live with them ...

Video"

https://www.dropbox.com/s/1mhoync2xy5kf9d/20170510_000423.mp4?dl=0
by bercioiu
Sun Jul 29, 2018 12:53 pm
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Re: Print UInt number on two ports

Thank you very much, sir! You told me exactly what I did not know!
by bercioiu
Tue Apr 02, 2019 11:21 am
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Re: Display TM1637!

Now, everything seems to be all right and everything goes well.
Thank you again!
by bercioiu
Mon Nov 04, 2019 6:20 pm
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Re: Help with GLCD Toshiba T6963C

I sent you last Thursday a GLCD (the green one) along with the "controller" made by me with pic 18F26K20 by post, these days you must receive it.
Thank you!
by bercioiu
Tue Nov 05, 2019 3:12 pm
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Re: Help with GLCD Toshiba T6963C

I am glad that the package arrived. You can use any voltage up to 30v dc (usually 12V). The marking of the regulators cannot be seen, because I made a mistake when I designed the pcb and mounted them upside down :lol: I can't wait for good news! Thank you! L.E.: This is the PDF datasheet for glcd: p...