Hi all
I'm wanting to build a Marine Aquarium controller for my marine tank, as this is not going to be easy for me, please can we take it step-by-step.
I would like the unit to be quiet sophisticated so it can do all I could ever need with some flexability....
What I would like to achieve is the following
1> 2 Temperature sensors (0.1 Deg C Res) with 4 outputs, each output can be selected for Sensor 1 or 2, selectable activation for above or below setpoint with adjustable hysteresis.
2> 2 pH inputs (0.1pH Res) with adjustable setpoints and hyteresis. (I have a circuit that can supply a referance voltage with calibration for the pH)
3> 4 adjustable timer outputs. (RTC with battery bachup)
4> PMW output to drive LED "Moonlight" on a 29 day simulated cycle (Could get the code from a friend for the simulation)
5> LCD Screen (4 line would be awesome showing all info), with a seperate 7 Segment Display for temp display so it can be read easily in the dark.
6> Display the max and min temp on sensor 1 for the last 24 hrs
7> Downloadable Log for a couple days to a PC of the Temp sensors and pH inputs
8> "Feed button" which will turn OFF all the pumps (connected via a relay) for a selectable time period.
9> Buzzer for alarms, temp too high/low, pH too high/low
This is going to be my dream project, and I would like to thank up front all those that take the time to help me
I would say the first thing we need to do is select a PIC chip.
We require
4 analog inputs (2 temp and 2 pH, although I think the temp could be done via digital?)
6 digital outputs (temp control, feed output and buzzer)
1 PMW output
PC connection port?
LCD connection Port?
3 7seg display Port?
control/keypad Port?
RTC connection?
Thanks
I'm wanting to build a Marine Aquarium controller for my marine tank, as this is not going to be easy for me, please can we take it step-by-step.
I would like the unit to be quiet sophisticated so it can do all I could ever need with some flexability....
What I would like to achieve is the following
1> 2 Temperature sensors (0.1 Deg C Res) with 4 outputs, each output can be selected for Sensor 1 or 2, selectable activation for above or below setpoint with adjustable hysteresis.
2> 2 pH inputs (0.1pH Res) with adjustable setpoints and hyteresis. (I have a circuit that can supply a referance voltage with calibration for the pH)
3> 4 adjustable timer outputs. (RTC with battery bachup)
4> PMW output to drive LED "Moonlight" on a 29 day simulated cycle (Could get the code from a friend for the simulation)
5> LCD Screen (4 line would be awesome showing all info), with a seperate 7 Segment Display for temp display so it can be read easily in the dark.
6> Display the max and min temp on sensor 1 for the last 24 hrs
7> Downloadable Log for a couple days to a PC of the Temp sensors and pH inputs
8> "Feed button" which will turn OFF all the pumps (connected via a relay) for a selectable time period.
9> Buzzer for alarms, temp too high/low, pH too high/low
This is going to be my dream project, and I would like to thank up front all those that take the time to help me
I would say the first thing we need to do is select a PIC chip.
We require
4 analog inputs (2 temp and 2 pH, although I think the temp could be done via digital?)
6 digital outputs (temp control, feed output and buzzer)
1 PMW output
PC connection port?
LCD connection Port?
3 7seg display Port?
control/keypad Port?
RTC connection?
Thanks