| Author |
 Topic  |
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
 Posted - Jun 29 2009 : 08:58:28 AM
|
Hey Johnny?
Wasn't that you that made some freq. counter using a PIC? I'm interested in doing that project myself. Was that posted on Microchip's website or was that totally your design. I looked on their sight but couldn't find it.
Oh, I finally got DSL! Now you can post more movies :D |
|
|
pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jun 29 2009 : 8:17:41 PM
|
| Hey Wow! Looks good! Thanks allot pebe. Hey, no hard feelings alright? Just that I did allot of fighting over that radio, not just on this forum. The radio came out awesome though. Wish I had time to go back and finish the higher powered final. |
 |
|
|
pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Jun 30 2009 : 02:13:02 AM
|
| No, no hard feelings - life's too short! |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 01 2009 : 12:00:32 PM
|
quote:
Originally posted by pebe
No, no hard feelings - life's too short!
Cool man! 
Say, do you think they have one in a newer chip? I'm afraid they might discontinue the PIC16_84. |
|
|
|
pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Jul 01 2009 : 2:36:23 PM
|
I think the 16F84 has been discontinued and replaced with the 16F84A. It is backward compatible with the '84 inasmuch as the oscillator can now run at 20MHz instead of 10MHz. It doesn't matter with this counter design because it uses a 4MHz oscillator.
The 16F84A is stated by Microchip as 'in production'. There are several other MCs that have more port bits and memory (as the 16F716) that could readily be adapted, so getting hold of a chip should not be a problem. |
|
|
|
pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Jul 02 2009 : 02:17:36 AM
|
| If you Google for 'pic frequency counter' there are quite a few more designs. |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 02 2009 : 10:51:16 AM
|
quote:
Originally posted by pebe
If you Google for 'pic frequency counter' there are quite a few more designs.
Oh you Googled it? I searched on Microchip's website. I've used the 84A. It does do 20MHz. I'm still afraid it will fall to the way side. Maybe not but would rather use the newer stuff. Let me look. Just trying to do a quick job and don't want to convert all the code. Might require me to think....ouch! LOL |
|
|
|
wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Jul 03 2009 : 8:09:01 PM
|
Hi Frank,
The frequency counter I made was my design. It was mostly programming than circuit design. I made it to see if it could be done using a minimalist mindset. It was mocked up on one of those breadboard where you push the components into the board. I managed to create a simple oscillator on the breadboard along side the frequency counter and measure 20MHz with the FC, and confirmed with my oscilloscope.
Goto search and type in "frequency counter" with my username selected in the list. |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 16 2009 : 10:22:41 AM
|
quote:
Originally posted by wasssup1990
Hi Frank,
The frequency counter I made was my design. It was mostly programming than circuit design. I made it to see if it could be done using a minimalist mindset. It was mocked up on one of those breadboard where you push the components into the board. I managed to create a simple oscillator on the breadboard along side the frequency counter and measure 20MHz with the FC, and confirmed with my oscilloscope.
Goto search and type in "frequency counter" with my username selected in the list.
Yeah, I want to see that. You got it posted there? |
|
|
|
wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Jul 16 2009 : 5:32:40 PM
|
It looks like I didn't make a thread for it. Here's a video I made last year. I can't even remember what I showed in that video. Anyway take a look.
http://www.mediafire.com/?nocan4d2zzm |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 17 2009 : 09:03:40 AM
|
| That's really good Johnny! What sort of interface did you use to display it to the PC? |
|
|
|
wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Jul 17 2009 : 09:30:29 AM
|
| RS232 |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 17 2009 : 7:45:51 PM
|
| No, I mean software. It looked like a GUI. I did assumed you were using the Microchip USB interface though. |
|
|
|
wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Jul 17 2009 : 9:46:33 PM
|
| Hyper Terminal |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
|
|
|
mrgone
Nobel Prize Winner
USA
1176 Posts |
Posted - Jul 18 2009 : 5:39:19 PM
|
Well anyway you did a nice job on it. That oscillator could use some work...lol. You see those humps on the signal? Those are harmonics and it's sort of saw tooth shaped like you got some resistance in the tank circuit somewhere. Sorry, I'm just a stickler for spectral purity.
But Johnny, you are the smartest guy I know for your age. You genius you. :D |
|
|
|
Topic |
|
Frequency Counter
