ERMEGM
- 29th July 2015, 05:14
Hello All,
I haven't finalized the design, but I'm thinking I will be using the 16F819. I have a module that I'm making that will do certain functions when certain inputs are activated, but I wanted to ask about one feature I was going to be implementing and needed to know if the oscillator was necessary.
The one feature this module will have is that when a certain input is activated, the module will begin a timed output. After this time expires, the output will turn off. However, the twist is this; because I want to monitor the other inputs in 1/10th second increments, do I even need an external oscillator? The pic usually handles short counts quite accurately. I would just use a counter to keep track of the number until say 5 minutes is reached. It doesn't have to be accurate, the timed output is simply to prevent excessive draw on the battery.
So, using a pause 100 command along with a counter seems pretty straight forward to me, but I just wanted to run it past you guys to see if I was missing something. If another input is activated, the timer would simply exit and reset it's count.
My logic seems sound unless someone objects.
Thanks,
Tony
I haven't finalized the design, but I'm thinking I will be using the 16F819. I have a module that I'm making that will do certain functions when certain inputs are activated, but I wanted to ask about one feature I was going to be implementing and needed to know if the oscillator was necessary.
The one feature this module will have is that when a certain input is activated, the module will begin a timed output. After this time expires, the output will turn off. However, the twist is this; because I want to monitor the other inputs in 1/10th second increments, do I even need an external oscillator? The pic usually handles short counts quite accurately. I would just use a counter to keep track of the number until say 5 minutes is reached. It doesn't have to be accurate, the timed output is simply to prevent excessive draw on the battery.
So, using a pause 100 command along with a counter seems pretty straight forward to me, but I just wanted to run it past you guys to see if I was missing something. If another input is activated, the timer would simply exit and reset it's count.
My logic seems sound unless someone objects.
Thanks,
Tony