I have an idea for a use of the Arduino but before i get to buying parts i was wondering if this is feasible...
Currently i have an Arduino UNO running a 20x4 LCD display and i have been using that to learn things on it as well as make one useful project but now i have a real good design need i want to try to meet.
Here is the setup... I have a deep cycle marine battery thats used as a DC backup supply for radio equipment, the battery is directly connected to a Iota DLS-55 power supply with the IQ4 smart charger module. It maintains the battery, runs it through charging cycles to check the battery etc. But i want to go one step further. I would like to be able to have a timer set to do a weekly battery test. For example i would set it to 168 hours and count down, that would be every seven days, when the timer hits zero it shuts off a relay output, i read through the good info on controlling a relay with the Arduino and thats easy enough to build, i just don't know how to implement the countdown timer to provide this function, but wait there is more!
On top of that i want it to also monitor the battery voltage, this is where it gets complicated.... I want it to monitor the voltage, and when it hits a preset voltage, lets say 11.9v, it then turns the relay back on reconnecting the power supply to charge the battery and supply power to everything. And if possible i would like to keep the LCD display and have it display the voltage its reading at all times and also show the countdown time remaining.
Now... Is all this possible??
It would make my life simpler, the Arduino would cycle the battery weekly and i wouldn't have to go flip a switch and then continue to monitor the voltage, it can take anywhere from 8-10 hours depending on how much stuff i left on for the battery to drop down to the point i set to have it reconnected, so it needs to leave it disconnected until that set point is reached. Seems like a lot but there is controllers that can do this, although beyond my budget.