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Search: Keyword(s): ; Posts Made By: mistergreen
Forum: DIY Today, 05:54 AM
Replies: 32
Views: 823
Posted By mistergreen
I'm not entirely sure. I read it in edu paper on...

I'm not entirely sure. I read it in edu paper on constructing a par meter. My guess is evens out and blocks certain spectrum even like ir.

They didn't even bother using filters. I guess a diffuser...
Forum: DIY Today, 04:57 AM
Replies: 139
Views: 5,242
Posted By mistergreen
I decided to get rid of SMTP all together. It...

I decided to get rid of SMTP all together. It only works with some mail servers but not most because of authentication. I'm calling a php script on my commercial web server that uses sendmail. That...
Forum: DIY Today, 04:48 AM
Replies: 32
Views: 823
Posted By mistergreen
Yeah, that's the one I used for my close enough...

Yeah, that's the one I used for my close enough meter. It works well. Try swapping out the nameless diode for the vtb8441. Adding a diffuser will further flatten that curve.

I should buy a prism...
Forum: Fish Yesterday, 02:53 PM
Replies: 8
Views: 250
Posted By mistergreen
Too bad people love to eat grouper too.

Too bad people love to eat grouper too.
Forum: DIY Yesterday, 12:28 AM
Replies: 32
Views: 823
Posted By mistergreen
Ah true. It makes it hard to find the right ones....

Ah true. It makes it hard to find the right ones. They do list the wattage but it doesn't guarantee same number of photons.

Better yet, use a prism. Move the sensor through the band of light.
Forum: DIY Yesterday, 12:01 AM
Replies: 32
Views: 823
Posted By mistergreen
What you can do is create a 20 or so LED array of...

What you can do is create a 20 or so LED array of varying spectrums from 300-800nm.
Switch on one LED at a time and measure the response from your sensor... They all should be equal except <400 &&...
Forum: Fish 02-28-2015, 09:24 PM
Replies: 8
Views: 250
Posted By mistergreen
Yeah, I think the stomach enzymes can break down...

Yeah, I think the stomach enzymes can break down the poison.
Forum: Fish 02-28-2015, 05:26 PM
Replies: 8
Views: 250
Posted By mistergreen
Grouper learns to eat LionFish

http://youtu.be/HKLkQaMY8KQ
Forum: DIY 02-28-2015, 03:17 PM
Replies: 32
Views: 823
Posted By mistergreen
I have this question, if a light source is so...

I have this question, if a light source is so specific in its spectrum say only 550 nm, is it really PAR? It has no benefit for plants who needs 400nm-700nm but mostly blue AND red.
Forum: DIY 02-27-2015, 11:16 PM
Replies: 32
Views: 823
Posted By mistergreen
this photodiode looks promising if you can find...

this photodiode looks promising if you can find it cheap
http://www.everlight.com/file/ProductFile/201407061524148948.pdf
Digikey is asking you to buy 1000 of it.
Forum: DIY 02-27-2015, 09:50 PM
Replies: 314
Views: 17,806
Posted By mistergreen
More channels to play with on the 12bit pwm chip...

More channels to play with on the 12bit pwm chip :hihi:
Forum: DIY 02-27-2015, 08:41 PM
Replies: 32
Views: 823
Posted By mistergreen
Success comes from failure. I guess you need a...

Success comes from failure. I guess you need a good photodiode.
https://farm9.staticflickr.com/8574/16458275007_deca10ba48_o.png
Forum: Fish 02-27-2015, 01:58 PM
Replies: 14
Views: 539
Posted By mistergreen
A water change will do it. It imitates a rain...

A water change will do it. It imitates a rain storm which triggers them spawning.
Forum: DIY 02-26-2015, 07:06 PM
Replies: 139
Views: 5,242
Posted By mistergreen
yeah, I thought about 2 arduino as well. But...

yeah, I thought about 2 arduino as well.
But I'll try running it all on the Due to see. I can grab the IP on api.ipify.org and it's pretty reliable with no timeouts. I'm having trouble with my email...
Forum: DIY 02-26-2015, 04:41 AM
Replies: 139
Views: 5,242
Posted By mistergreen
How often does your ip change btw? Read my added...

How often does your ip change btw? Read my added comments 2 posts back.


Sent from my iPad using Tapatalk HD
Forum: DIY 02-26-2015, 04:38 AM
Replies: 139
Views: 5,242
Posted By mistergreen
Good find! Sent from my iPad using...

Good find!


Sent from my iPad using Tapatalk HD
Forum: DIY 02-26-2015, 04:18 AM
Replies: 139
Views: 5,242
Posted By mistergreen
I don't know about the change limit but there...

I don't know about the change limit but there seems to be a time limit.

I was thinking, if your ip is switching every 30 minutes, you should find another method, like running their DUC app on your...
Forum: DIY 02-25-2015, 04:14 PM
Replies: 139
Views: 5,242
Posted By mistergreen
Hey, I just found out that if you use noip you...

Hey, I just found out that if you use noip you don't need to have an extra script to check your IP. Noip does it for you when you connect to their update server.
Something like this.

if...
Forum: DIY 02-25-2015, 01:08 PM
Replies: 314
Views: 17,806
Posted By mistergreen
No don't include, that code I showed should be in...

No don't include, that code I showed should be in the latest rtc lib.


Sent from my iPad using Tapatalk HD
Forum: DIY 02-25-2015, 02:49 AM
Replies: 314
Views: 17,806
Posted By mistergreen
The latest RTClib.h & Wire.h looks like it...

The latest RTClib.h & Wire.h looks like it supports I2C RTC for the Due
https://github.com/adafruit/RTClib


#include <Wire.h>
#include "RTClib.h"
#ifdef __AVR__
#include <avr/pgmspace.h>
...
Forum: DIY 02-25-2015, 02:03 AM
Replies: 314
Views: 17,806
Posted By mistergreen
The Due ARM chip has a built in RTC btw. It...

The Due ARM chip has a built in RTC btw. It doesn't have a backup battery of course, just to let you know :)
The new Time library supports it.
Forum: DIY 02-24-2015, 09:29 PM
Replies: 314
Views: 17,806
Posted By mistergreen
You need a different library though right? One...

You need a different library though right? One specifically for 3.3V.
Forum: DIY 02-24-2015, 07:44 PM
Replies: 314
Views: 17,806
Posted By mistergreen
A little more detail on the Serial logic shifting...

A little more detail on the Serial logic shifting
https://learn.sparkfun.com/tutorials/using-the-logic-level-converter/hookup-examples
Forum: DIY 02-24-2015, 05:30 PM
Replies: 314
Views: 17,806
Posted By mistergreen
Here's an example serial hookup to the...

Here's an example serial hookup to the bidrectional
https://learn.sparkfun.com/tutorials/bi-directional-logic-level-converter-hookup-guide
Look under Serial.
Forum: DIY 02-24-2015, 05:10 PM
Replies: 314
Views: 17,806
Posted By mistergreen
think he got it right. 5 is input,4 is output . I...

think he got it right. 5 is input,4 is output . I think I know what you mean. Rob needs a bi-directional then. M74H only goes one way?
Something like this http://www.adafruit.com/product/757
or the...
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