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info for relay expansion box
Posted: Thu Jun 23, 2011 1:29 pm
by petruzzelli
sorry but is possible i have the Relay Expansion Box whit 8 outlets pwm for LEDS?
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 1:39 pm
by rimai
No, but you can add a PWM expansion module to your RA and have 6 more for a total of 8 PWM channels.
If you need more, add a 2nd PWM expansion for a total of 14.
So, basically each PWM expansion module can give you 6 more channels.
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 1:46 pm
by petruzzelli
rimai wrote:No, but you can add a PWM expansion module to your RA and have 6 more for a total of 8 PWM channels.
If you need more, add a 2nd PWM expansion for a total of 14.
So, basically each PWM expansion module can give you 6 more channels.
but on the site where this PWM expansion module?
but this PWM is 8 bit or 12 bit?
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 1:54 pm
by rimai
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 2:04 pm
by petruzzelli
ok roberto
but where is the price?
if you're not going to produce it is possible to have the eagle files and code to arduino?
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 2:11 pm
by rimai
It's $89 plus shipping.
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 2:25 pm
by petruzzelli
rimai wrote:It's $89 plus shipping.
u have a manual in this mode i see if it is possible but in my ra
i want see the tipe of connection
i f u want is possible send to
domenico_petruzzelli@hotmail.it
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 2:30 pm
by rimai
It will work on a 2nd gen relay box. If you have a usb like port on the side of the box, it will work.
Re: info for relay expansion box
Posted: Thu Jun 23, 2011 11:43 pm
by petruzzelli
rimai wrote:It will work on a 2nd gen relay box. If you have a usb like port on the side of the box, it will work.
tnx
but this module use the normal library?
the pwm is 8 or 12 bit? for me this is important
Re: info for relay expansion box
Posted: Fri Jun 24, 2011 9:00 pm
by rimai
Yes. just add a simple function and you are good to go. Curt is working on getting them into the development libraries too.
The PWM resolution is 8 bit, but to be honest, we don't even use 7bits resolution. We calculate PWM in percentage from 0 to 100, which is less than 7bit resolution.
Even with less than 7 bit resolution, the human eye can't distinguish the difference in my opinion, let alone corals.
Would you be able to enlighten us on why 12 bit would be more beneficial?
Re: info for relay expansion box
Posted: Sat Jun 25, 2011 1:08 am
by petruzzelli
rimai wrote:Yes. just add a simple function and you are good to go. Curt is working on getting them into the development libraries too.
The PWM resolution is 8 bit, but to be honest, we don't even use 7bits resolution. We calculate PWM in percentage from 0 to 100, which is less than 7bit resolution.
Even with less than 7 bit resolution, the human eye can't distinguish the difference in my opinion, let alone corals.
Would you be able to enlighten us on why 12 bit would be more beneficial?
hi roberto
for me is importan 12bit for a new project not for aquarium
Re: info for relay expansion box
Posted: Sun Jun 26, 2011 6:18 pm
by binder
rimai wrote:Yes. just add a simple function and you are good to go. Curt is working on getting them into the development libraries too.
Got this in, just needs to be tested for the output. It should work because all the code is based on what was already created. I just gave it a main menu entry:
main_w_pwm.JPG
and a fancy menu to itself:
pwm_menu.JPG
Note: This code only works with the PWM expansion module. It does not affect the 2 PWM outputs on the controller.
curt
