theatrus
100-mile-commuter
Great question - for the price difference it may be worth trying.
Micro solenoids for CO2 regulators
- Thread starter theatrus
- Start date
Great question - for the price difference it may be worth trying.
lighthouze08
New member
Just wanted to thank Theatrus for the work you put into the project. I stumbled on this thread a few weeks ago and decided to build myself one. So far it's working great!!!
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Sent from my iPhone using Tapatalk
theatrus
100-mile-commuter
Just wanted to thank Theatrus for the work you put into the project. I stumbled on this thread a few weeks ago and decided to build myself one. So far it's working great!!!
Sent from my iPhone using Tapatalk
Glad it worked!
AZRippster
Diver & Reef Aquarium Nut
Hello,
I was curious if you had made any changes that you confirmed will shorten the on-time pulse of 30ms.
Thanks,
AZRipp
I was curious if you had made any changes that you confirmed will shorten the on-time pulse of 30ms.
Thanks,
AZRipp
theatrus
100-mile-commuter
Not to this design. It's a bit inefficient to have a 555 with such a wide timing gap, so I'd recommend using a microcontroller.
I'm looking at integrating this with a pH circuit to get a full CO2 controller in one up on blueAcro.
AZRippster
Diver & Reef Aquarium Nut
I'm finding the "On Time" of 30ms is fine, but the rate of the bubbles for my CO2 reactor needs to be slower. The minimum on the potentiometer is still too fast. Is there a different potentiometer value that would allow for even slower release of bubbles?
Thanks!
Thanks!
theatrus
100-mile-commuter
You can use a larger value potentiometer or add series resistance, say 10k, to slow it down further.
<del>Theatrus, thanks for posting this!!! I put it together using the BOM and boards and the toughest thing about it was sourcing the Clippard valves. Working for months now without issue and that's saying something since I have ZERO experience working with circuit boards. I do have a question though. My tank is really starting to take off and my calcium reactor is having some trouble keeping the PH down in my CaRX. With the rate cranked as far as it can go I wanted to know if there is some modification I can make to allow for the valve to stay open longer to allow for more CO2. Appreciate the help 
</del>
Nevermind, I figured it out:rollface:
</del>Nevermind, I figured it out:rollface:
Last edited:
jwalker314
Member
I am trying to adapt the control for my carbon Doser to the 0-10v output on the Apex. It seems it might be best to just make a new one from scratch that does this. Is it possible to adapt your circuit to be controlled via 0-10v signal instead of a potentiometer?
theatrus
100-mile-commuter
besides the Clippard mouse, there is another good one.
ASCO/numatics miniature solenoid, it is full FR 430 stainless steel structure, the low power consumption model only use 0.65 watt.
What's the size of the orfice? The Clippard is nice as it has a whole range and they are all tiny
theatrus
100-mile-commuter
You're better off making a new product for this - the 555 timer is not for voltage control. Simplest would be a tiny microcontroller with an A/D. It's possible to do without any code but it's a harder exercise.
theatrus
100-mile-commuter
<del>Theatrus, thanks for posting this!!! I put it together using the BOM and boards and the toughest thing about it was sourcing the Clippard valves. Working for months now without issue and that's saying something since I have ZERO experience working with circuit boards. I do have a question though. My tank is really starting to take off and my calcium reactor is having some trouble keeping the PH down in my CaRX. With the rate cranked as far as it can go I wanted to know if there is some modification I can make to allow for the valve to stay open longer to allow for more CO2. Appreciate the help
Nevermind, I figured it out:rollface:
No worries. What value resistor did you move to?
not sure the exact size of the orifice, but a quick PDF search will see the number.
They occupy the similar niche in the industry, they are all small orifice miniature solenoids designed for low flow, low power consumption application, but the stainless steel numatics cost more than the Clippard mouse solenoid by at least double.
Clippard mouse is better choice due to its low cost, but numatics tolerate harsher environments.
auntiecookie
Member
�������� Good job ����
A question what side fittings come on the original solenoid valve ?
A question what side fittings come on the original solenoid valve ?
oreo57
Well-known member
Varies.. Manifold (single, duo, ect) come in 1/8npt or 10/32 straight threads (US versions)
"In line" version is 10/32 only I believe..
https://www.clippard.com/downloads/...by Page Number/Electronic Valves/Page 183.pdf
theatrus
100-mile-commuter
Pretty much. I tend to set around 50ms of on time, though I may be misremembering the time. It's usually very easily audible if you've dropped the clipboard valve time too short as the clicking stops.
