I have a LCD counter module which notches up 1 digit each time +1.5V is applied to the input (for a minimum of 100 microseconds), and want to use it to display the accumulated time that some equipment is being operated.
My thoughts are along the lines of building some kind of monostable circuit with one input and one output, the input being either 0v or 9v (9v signifying that the equipment is being operated). This input would start the monostable which would provide a series of pulses at the output 1 minute apart, which could be counted by the LCD counter.
Does this sound feasible, or is there a better way to achieve this (using the LCD module which I have already bought!)
My thoughts are along the lines of building some kind of monostable circuit with one input and one output, the input being either 0v or 9v (9v signifying that the equipment is being operated). This input would start the monostable which would provide a series of pulses at the output 1 minute apart, which could be counted by the LCD counter.
Does this sound feasible, or is there a better way to achieve this (using the LCD module which I have already bought!)