Search found 15 matches

by PS1981
Sun Sep 21, 2014 4:20 pm
Forum: Projects
Topic: Error messge when trying to load the PIC program
Replies: 1
Views: 3068

Re: Error messge when trying to load the PIC program

Hello, I think your problem may be that you are using flowcode. The pic projects on this site are done using MPLAB. Go to microchip.com and get yourself the free MPLAB environment and the C18 compiler. The newer compiler is XC8 you can get this too for free. PicKit is required for programming, I don...
by PS1981
Wed Oct 02, 2013 4:05 pm
Forum: Put'm Here
Topic: Need help understanding a circuit diagram
Replies: 10
Views: 10427

Re: Need help understanding a circuit diagram

To be precise that would depend on the LED's your using, but in general here you can use the standard 0.25W type. Small explaination: If you have 5v, and your LED requires 30mA you can calculate 5v x 0.03A = 0.15VA (Volt-Ampere being the same as the unit Watt for electrical energy). You will however...
by PS1981
Wed Oct 02, 2013 2:46 pm
Forum: Put'm Here
Topic: Need help understanding a circuit diagram
Replies: 10
Views: 10427

Re: Need help understanding a circuit diagram

4-bits: How to put it simply? These are 4 individual signals. One Byte consists of 8 bits. 1 bit being for example an input or an output, a 1 or a 0. These bits are simply electrical signals (in this case because were talking hardware), if its outputs for example on or off signals. I think you need ...
by PS1981
Wed Oct 02, 2013 2:24 pm
Forum: Put'm Here
Topic: Need help understanding a circuit diagram
Replies: 10
Views: 10427

Re: Need help understanding a circuit diagram

Well I didn't study this project, but taking a look at it now I'd say that's also a simplified way of showing things. Look at the photos (Part 5: Hardware) showing the wires from the underside. It's hard to see but you may work it out. From the pins RA0-RA3 and RC4-RC7 there is from each pin a wire ...
by PS1981
Wed Oct 02, 2013 2:07 pm
Forum: Put'm Here
Topic: Need help understanding a circuit diagram
Replies: 10
Views: 10427

Re: Need help understanding a circuit diagram

Looks like a 12v power supply for the fan motor. Same as with the 5v labels, only the power supply is not shown here.

EDIT: This may however be a typo that should also read 5v. Depends on the fan or motor you use.
by PS1981
Wed Oct 02, 2013 1:38 pm
Forum: Put'm Here
Topic: Need help understanding a circuit diagram
Replies: 10
Views: 10427

Re: Need help understanding a circuit diagram

The arrow with +5v on the 7805 voltage regulator (left side of the diagram) is the 5 volt power supply. All other arrows labelled +5v should be connected to this. This is a way to simplify the schematic instead of drawing all the power lines which in this case may become messy due to the relatively ...
by PS1981
Mon Jan 07, 2013 12:25 pm
Forum: Projects
Topic: Question about DC motors
Replies: 5
Views: 5417

Re: Question about DC motors

michaeljee wrote:Hi That is great, i was also looking for this, How can i get this?

_____________
michaeljee9


Nice to see you´re pleased about this, but what exactly are you looking for?
by PS1981
Sun Jan 06, 2013 8:33 am
Forum: Introduction to Modern Electronics
Topic: Test Post
Replies: 4
Views: 7462

Re: Test Post

Sorry, I wasn´t watching this post: How antisocial of me for not answering! :oops: Yes Projects running: Building a PCB etching system. UV lighting works no probs - etching tank (automated) almost done. Next up drilling station. Possibly controlling this over I2C with Raspberry Pi. Will be a much bi...
by PS1981
Sun Jan 06, 2013 8:29 am
Forum: Projects
Topic: Question about DC motors
Replies: 5
Views: 5417

Re: Question about DC motors

Ok, many thanks for the quick reply and your more experienced opinion. I have been confused by datasheets and nominal values before, for example voltage ratings of stepper motors - rated at 2.8v for example, then graphs in the same data sheet showing testvalues running the motor at 24v! OK, I know t...
by PS1981
Sat Jan 05, 2013 10:56 pm
Forum: Projects
Topic: Question about DC motors
Replies: 5
Views: 5417

Question about DC motors

I bought a DC motor to play with: http://www.conrad.de/ce/de/product/227544/GETRIEBEMOTOR-RB-35-130/SHOP_AREA_19781&promotionareaSearchDetail=005 and was wondering about voltage. I wanted to use this with PWM controlled by a PIC18 chip and an L298. The motor is rated 12v (nominal?). Does this me...
by PS1981
Fri Oct 26, 2012 5:39 pm
Forum: Introduction to Modern Electronics
Topic: Test Post
Replies: 4
Views: 7462

Re: Test Post

As the president said: Yes we can! :D
by PS1981
Tue Sep 18, 2012 7:48 pm
Forum: Tutorials
Topic: Arduino Tachometer
Replies: 2
Views: 5557

Re: Arduino Tachometer

Suspect this should be a Phototransistor, do you have a parts list to see what T1 should be? Due to there being a diode labelled IR emitter close to the part in question I think this is the receiving end of an Infrared light barrier, a kind of 3-legged IR Sensor.
by PS1981
Tue Sep 04, 2012 8:19 pm
Forum: Tutorials
Topic: Learn I2C Communication - PIC Interface
Replies: 4
Views: 7049

Re: Learn I2C Communication - PIC Interface

SUPERB!!!!

Many thanks. I´ve copied the code for the configuration into my code, recompiled und voila!!

Appreciate it very much! :D :D
by PS1981
Tue Sep 04, 2012 7:23 pm
Forum: Tutorials
Topic: Learn I2C Communication - PIC Interface
Replies: 4
Views: 7049

Re: Learn I2C Communication - PIC Interface

I´ve been trying to get the I2C PIC project running for quite some time now, but unfortunately not having much luck. I´m very interested in getting this running ´cos I´m quite keen to start interfacing things. I´m using a 20MHz Oscillator, grounded with 2 27pF capacitors (as I´ve seen this done in o...

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