Reef Discussion
Love the drawing, don't have a clue what I'm looking at, but thanks heaps for doing this. I'm sending this off to my friend who is an electrical engineer to build for me with a list of the parts needed. I can't tell you how much I appreciate this guys!
He has a Ph.D. in electrical engineering, he damn well better be able to figure it out, lol. When we were kids, he'd wire up all kinds of shit. One time we had a computer fan and wired it to 110v, damn thing hopped and skipped all over the table spewing smoke and sparks, we still laugh about it today.
I will most likely end up getting a couple of these and do the DIY version
http://spectrapure.com/DOSING-TOP-O...staltic-Dosing-Pump-LiterMeter-Gen6-Pump-Only
Unfortunately the sale doesn't apply to these :confused:
http://spectrapure.com/DOSING-TOP-O...staltic-Dosing-Pump-LiterMeter-Gen6-Pump-Only
Unfortunately the sale doesn't apply to these :confused:
My second, and much better, attempt
This is on a 10cm x 5cm footprint - I have also broken out a few extra digital pins + ground + 5v just in case there is a need to add something else.
Boards would work out to around $3.50 each (with minimum order of 10) - I might be able to squeeze the main components (without the extra pins etc) onto a 5cm x 5cm board for around $2.50 each.
I would need to check the component prices, but the total cost would be around $15.
Is there enough interest ?
This is on a 10cm x 5cm footprint - I have also broken out a few extra digital pins + ground + 5v just in case there is a need to add something else.
Boards would work out to around $3.50 each (with minimum order of 10) - I might be able to squeeze the main components (without the extra pins etc) onto a 5cm x 5cm board for around $2.50 each.
I would need to check the component prices, but the total cost would be around $15.
Is there enough interest ?
He figured it out. I usually say "I want this to do this, make it happen." Sometimes I get what I want, sometimes I get a blank stare, lol. And if I give him a drawing he says "I know damn good and well you didn't draw this." I blamed the drawing on you this time so I didn't catch hell over it. :D
Not sure what shape, etc, but here's a quick list. Are you planning on putting a LCD shield or anything on the face, etc. Buttons for programming, etc?
http://www.jaycar.com.au/search?text=jiffy+box&CSRFToken=bcc410aa-1f8f-42cc-b4f0-c408f24399d7
http://www.jaycar.com.au/search?text=jiffy+box&CSRFToken=bcc410aa-1f8f-42cc-b4f0-c408f24399d7
From the jaycar website - To fit PCB (mm) Horizontal 62 x 49
I had designed the board based on a 100 x 50 size for no particular reason other than that was one of the sizes available from iteadstudio.com
I could try to fit it on a 62 x 49 size board - I need to learn how to design my own parts as the RTC module I had used is not actually the correct size.
As for an LCD, buttons etc - no, there is no plan for these. The original idea from @Sam Parker was for a small, low cost solution - adding these additional components adds to the cost and complexity. The downside is that the variables need to be hard coded using the Arduino IDE (software). Given that this would hopefully be a 'set and forget' solution this was not considered to be a major problem.
Longer term, I would love to be able to add in a Bluetooth module (around $5) and use a mobile device to program the Arduino - this will happen, but it's not on the short term radar (although I have managed to learn enough about Eagle to create a usable board in a week or two :D)
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