DIY thermal differential controller (solar hot water pump controller) - Page 5

Daox · 08-02-10, 07:27 AM

Looks like a nice unit!

Do you have a version that can handle an AC pump?

bsmith · 08-02-10, 09:29 AM

Its got 10A output relays that should work for that applications. I would keep the pump below 4-5A for AC version and would probably advise to put a MOV in parallel with the relay contacts. You always connect an external contactor to the unit if you wanted something beefier.

tasdbois · 08-02-10, 05:02 PM

How about this?

bsmith · 08-02-10, 06:58 PM

That looks like a DC switch to me since its for cars maybe. You would probably be better off with the 10A relay contact unless your load is DC.

bergenm · 08-02-10, 09:06 PM

This gizmo works great on a taco 009 taco pump 120v@1.2A controlled by 3.3v I/O pin.

10A @ 480VAC SOLID STATE RELAY-MPJA, Inc.

bsmith · 08-02-10, 09:13 PM

That looks pretty good and the price is right.

bsmith · 11-17-10, 10:40 PM

Here is a nice differential temperature controller with temperature logging and 4 inputs for $60. myDTC Differential Temperature Controller Store - Home

Brian

house4u · 02-23-15, 03:31 PM

Hi to all. I have made free Arduino's solar controller. I am from Ukraine and tried to translate all instruction. Maybe translation was done not so good but i was trying. I think now, everybody may to do thermal differential controller by yourself!

Of-course i cannot post links for now... Also i have interesting online monitor page of my home-made hot water solar system, but it is not in english. I may try to translate it too.

house4u · 02-24-15, 07:00 AM

Now i can post links. I have created a separate thread for my solar controller here http://ecorenovator.org/forum/applia...4u-viktor.html

house4u · 06-11-15, 07:02 AM

Now i am working in this direction. For example i plan in few next month to release new firmware (cost $4.95) with WEB Monitor function, so everyone will be able to have similar monitor.
But this WEB-monitor needs a separate web-server to work, so i am going to provide my own web server with $0.95 per month or $9.95 per year. And of course - the same firmware for hot water solar controller is and will be free (without web-monitor function)

08-02-10, 07:27 AM	#41
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	Looks like a nice unit! Do you have a version that can handle an AC pump? __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

08-02-10, 09:29 AM	#42
bsmith Cheap DIY'r Join Date: Jul 2010 Location: Madison, AL Posts: 7 Thanks: 2 Thanked 0 Times in 0 Posts	Its got 10A output relays that should work for that applications. I would keep the pump below 4-5A for AC version and would probably advise to put a MOV in parallel with the relay contacts. You always connect an external contactor to the unit if you wanted something beefier.

08-02-10, 05:02 PM	#43
tasdbois Lurking Renovator Join Date: Oct 2008 Location: Mirabel, QC Posts: 28 Thanks: 0 Thanked 0 Times in 0 Posts	How about this?

08-02-10, 06:58 PM	#44
bsmith Cheap DIY'r Join Date: Jul 2010 Location: Madison, AL Posts: 7 Thanks: 2 Thanked 0 Times in 0 Posts	That looks like a DC switch to me since its for cars maybe. You would probably be better off with the 10A relay contact unless your load is DC.

08-02-10, 09:06 PM	#45
bergenm Eco-Geek Join Date: Jul 2010 Posts: 8 Thanks: 0 Thanked 2 Times in 2 Posts	This gizmo works great on a taco 009 taco pump 120v@1.2A controlled by 3.3v I/O pin. 10A @ 480VAC SOLID STATE RELAY-MPJA, Inc.

08-02-10, 09:13 PM	#46
bsmith Cheap DIY'r Join Date: Jul 2010 Location: Madison, AL Posts: 7 Thanks: 2 Thanked 0 Times in 0 Posts	That looks pretty good and the price is right.

11-17-10, 10:40 PM	#47
bsmith Cheap DIY'r Join Date: Jul 2010 Location: Madison, AL Posts: 7 Thanks: 2 Thanked 0 Times in 0 Posts	Here is a nice differential temperature controller with temperature logging and 4 inputs for $60. myDTC Differential Temperature Controller Store - Home Brian

02-23-15, 03:31 PM	#48
house4u Lurking Renovator Join Date: Feb 2015 Location: Ukraine Posts: 17 Thanks: 1 Thanked 4 Times in 3 Posts	Hi to all. I have made free Arduino's solar controller. I am from Ukraine and tried to translate all instruction. Maybe translation was done not so good but i was trying. I think now, everybody may to do thermal differential controller by yourself! Of-course i cannot post links for now... Also i have interesting online monitor page of my home-made hot water solar system, but it is not in english. I may try to translate it too.

02-24-15, 07:00 AM	#49
house4u Lurking Renovator Join Date: Feb 2015 Location: Ukraine Posts: 17 Thanks: 1 Thanked 4 Times in 3 Posts	Now i can post links. I have created a separate thread for my solar controller here http://ecorenovator.org/forum/applia...4u-viktor.html

06-11-15, 07:02 AM	#50
house4u Lurking Renovator Join Date: Feb 2015 Location: Ukraine Posts: 17 Thanks: 1 Thanked 4 Times in 3 Posts	Now i am working in this direction. For example i plan in few next month to release new firmware (cost $4.95) with WEB Monitor function, so everyone will be able to have similar monitor. But this WEB-monitor needs a separate web-server to work, so i am going to provide my own web server with $0.95 per month or $9.95 per year. And of course - the same firmware for hot water solar controller is and will be free (without web-monitor function)