Search found 177 matches

by Vernon
Mon Sep 04, 2017 3:29 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Have you all ever heard of Cooley and Tukey? Well they invented the FFT time to frequency domain function! As a first – the phase angle meter in the next CTMP will offer power quality (% THD). Since I have a good sample set and now I have some really serious number crunching power I decided to have ...
by Vernon
Sun Sep 03, 2017 10:46 am
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Running a servo back and forth and measuring AC parameters to 250 PPM at the same time!

I didn't make a movie but if you all don't believe me I will.
by Vernon
Sun Sep 03, 2017 8:31 am
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Massive power and fat wires! Getting ready to run servos and you can't do that with your old cell phone charger. So I attached this YUUUGE, 6 dollars from Electronic Goldmine, Condor 65 watt power supply. That will give me 4+ Amps spare +5V power for servos. Rewired with #18. You can see the mountin...
by Vernon
Sat Sep 02, 2017 12:03 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

http://www.cttestset.com/PhaseTEST.htm 250PPM AC accuracy! As you can see from the inset in the picture the calibration will support +/- 0.025% +/- 1 LSD. While I couldn’t beat 0.1% with the MOD5213 board I changed the algorithm and sample rate and this one is awesome. My best AC measurement circuit...
by Vernon
Fri Sep 01, 2017 6:06 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

All the parts are in, the IAs are tested, and everything works so far. Have not tested or installed the AD626, it is connected to a 12bit A/D input, but will do that at some point. I also need to install the servo module - also for later.
by Vernon
Fri Sep 01, 2017 12:24 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Added watts and vars. 0.1% accuracy across the ranges. Angle reads +0.07 degree anywhere you test it.
by Vernon
Fri Sep 01, 2017 10:39 am
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

PCA9685 I2C PWM modules are available on Ebay for cheap and the board will mount one of those. They are great for servos, control of DC motors and so on - but I just came up with a new application; PWM control of 16 channels of ordinary 120V AC lighting! This is especially useful considering the ava...
by Vernon
Thu Aug 31, 2017 5:02 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

And - of course you need the phase angle meter web page. Watts, Vars and other parameters tomorrow.
by Vernon
Thu Aug 31, 2017 3:28 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Bad day! I lost the UPS for the PC about a month ago. I found out last night that if lightning strikes and the power goes off just as you are saving a file - you lose the whole file and it turns up empty. A day's work just gone. I Now have a UPS on there. Recovered from that disaster and continued t...
by Vernon
Wed Aug 30, 2017 1:49 pm
Forum: NetBurner Hardware
Topic: MOD54415 Projects.
Replies: 48
Views: 318430

Re: MOD54415 Projects.

Got the board from China (www.pcbway.com - free plug for them) and put some of the parts in. Works great. AD7606 works, display and touch work, port expander works, RS232 works and the internet works. Displaying channel 8 A/D DC volt value on both the display and a web page. I still have to install ...