Starting a new project soon and need a bit of input. I would like to monitor the temps in 4 different vessels and have an alarm sound and flash the 7 segment display to indicate a temp is out of the set range. I would also like to run a 115 VAC pump on a demand on/off switch, a water line control to manage a n immersion chiller and a Reverse Osmosis Boost pump too. Ideally I would like to interlock the power off of the panel till the air legs have fully extended. Once fully extended I would like for the start-up procedure to require a setting in each monitored temp area. The Piezo buzzer should beep 1 to 4 times and repeat to indicate which vessel is out of range either too high or too low temps indicated by red, green, and blue led segments near each 7 seg temp readout. I understand the DS18B20's can all communicate on single wire on one pin only on the processor. Once I get all the input from the single wire units can I then use different outputs to control what I do with each reading? I would also like to add an RTC to do countdown and alarm functions for a one hour boil time. The DS18B20's run on 5 volts, the 40X2 runs on 5, the air solenoid switches run on 100 VAC, the Boost pump came with a transformer to step it down from 115 VAC to 24VDC. The air interlock solenoids will also need an indicator LED to signal when to use the second stage of the extenders. I could only find 6.75 inch travel cylinders for a reasonable price so I just bought enough to do each leg in two stages. I also ordered several 40 Amp SSRs with 3-32VDC input signal sides and up to 240 VAC on the output sides. I have a HUGE box full of photocouplers and small parts like caps, resistors, cables, connectors and LED's, pots and basic components. This device is for home brewing beer so I need accuracy and durability as well as water resistance and humidity rejection at higher than ambient Florida temps/humidity. I would love to discuss the basics and finer points of this system before I start building boards and soldering so I can make sure I have everything covered and properly addressed. Thanks in advance for your thoughts and inputs. It's a major newcomers project but I have plenty of time so I can hopefully get it right the first time.
"Wheelchair Bob"
"Wheelchair Bob"