I'll try to do a parts break down here since I've relocated most of the links
the Ethernet shield :
http://www.ebay.com/itm/181229572768?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
the TFT LCD 3.2WD screen here:
http://www.ebay.com/itm/221343348573?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
the screen shield here:
http://www.ebay.com/itm/321347794446?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
the RTC here:
http://www.ebay.com/itm/221403480973?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
the proto board here:
http://www.amazon.com/gp/product/B006SJSBBM/ref=oh_details_o02_s00_i03?ie=UTF8&psc=1
relay board here:
http://www.amazon.com/gp/product/B00C8O9KHA/ref=oh_details_o08_s00_i04?ie=UTF8&psc=1
the project case here:
http://www.amazon.com/gp/product/B005FMY5FE/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1
pH stamp here:
http://www.amazon.com/gp/product/B00641R1PQ/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1
and because I tried to DIY this but mine looks like crap compared to these,
I will likely get the Atlas single component board for my pH stamp here:
https://www.atlas-scientific.com/product_pages/components/single-carrier.html
or I may get this instead so I can upgrade as I need it to use the ORP and Density features as well as the 2nd pH stamp:
https://www.atlas-scientific.com/product_pages/components/multi-uart-carrier.html
I don't run a Ca Rx, yet, but with another pH circuit, I can control the CO2 with this controller to keep it's pH in check
all the connectors and cables are coming from Amazon and Ebay as well, just do a search for DB9 serial straight through cables and chassis mounts connectors, you'll find everything you need,same for the 3.5mm stereo connectors....
if the DB9 ain't enough wires(9 wires), they make a DB15(15 wires) and DB25(25 wires) as well...I may end up having to use one or the other of those as well
and Fernando's code is here:
https://github.com/fernandogarcia I used the English version