b4tn
Valuable Member
I am dizzy from reading lol. But I got Reef-pi installed, VNC, and remote access all worked out and am ready to start planning the build. I have read so much info today my brain feels like mush but I looked over all the schematics and am confident with power control, temp, and ATO on parts to buy and and how to build it. @Ranjib I looked over the EZO datasheet and its very straight forward and should be an easy addition I do have a few questions and I hate to ask these this far along because I am sure they are repeats.
The EZO uses pins 3 and 5 So I am a little hazy on building a doser circuit using PWM if you are using a PH probe. This one appears to make use of the scl pin 5 https://www.reef2reef.com/threads/r...-on-raspberry-pi.289256/page-304#post-5069339 but the adafruit lesson appears to use a software based PWM and a regular input?
I already have a BRS lab grade probe. Is this sufficient or do I need to get a new one?
I have been through the documents over and over again. I cannot find if you are using a LM2596 to break out the power where the 5 volt lead connects to on the rasberry itself. In the diagrams it goes to the lower 5 volt power bar and stops. Do you have to cut up a micro usb cable?
I really liked the idea of the perma prot hat but I dont think its going to have enough room to set up PH, power, ATO, temp, and doser. I am thinking to build everything on a full size Perma bread board. Does a standard IDE cable by chance fir the Rasberry pins?
I see a lot of builds using 2 LM2596's is there a reason for this as two separate power supplies due to total power consumption?
The EZO uses pins 3 and 5 So I am a little hazy on building a doser circuit using PWM if you are using a PH probe. This one appears to make use of the scl pin 5 https://www.reef2reef.com/threads/r...-on-raspberry-pi.289256/page-304#post-5069339 but the adafruit lesson appears to use a software based PWM and a regular input?
I already have a BRS lab grade probe. Is this sufficient or do I need to get a new one?
I have been through the documents over and over again. I cannot find if you are using a LM2596 to break out the power where the 5 volt lead connects to on the rasberry itself. In the diagrams it goes to the lower 5 volt power bar and stops. Do you have to cut up a micro usb cable?
I really liked the idea of the perma prot hat but I dont think its going to have enough room to set up PH, power, ATO, temp, and doser. I am thinking to build everything on a full size Perma bread board. Does a standard IDE cable by chance fir the Rasberry pins?
I see a lot of builds using 2 LM2596's is there a reason for this as two separate power supplies due to total power consumption?
