Bernard,After 3 mo., battery might be hurting so maybe beep buzzer 5 sec every minute??
Right pulsating beep will be better than a stable beep and will make the battery last longer.
Bernard,After 3 mo., battery might be hurting so maybe beep buzzer 5 sec every minute??
Alec, should be heard within about 30 Ft. range. Does not have to be very loud.How can you guarantee that anyone will be within audible range of a very small buzzer in 3 months time?
How about this: Rather than continue to give us incomplete, inaccurate, and uninformed requirements, why don't you do some work on your own. Think through exactly what you want to achieve, and what it will take to do it. Think through the device's operation, handling, assembly, and repair. Determine how loud a beeper has to be in order to be heard from 30 feet away. Factor in background noise and the fact that the beeper might be partially covered. Work out the power requirements and determine the battery size. Determine the packaging - maximum package size, material, construction, mounting (belt clip, wall hook, etc.). In other words, think. There is more than enough information in the previous posts to fill in what you need.
What class and grade is this for? Wherever and whatever the school is, I hope it does not consider passing off all of the major aspects of a project to total strangers as work.
ak
A mind mollestor? I may upsize to a nine volt and include an LED on the output.After 3 mo., battery might be hurting so maybe beep buzzer 5 sec every minute??
It was not apparent until late in this thread that your project is homework, but it is. I moved this thread to Homework Help where you are expected to attempt to solve the problem (in this case come up with a design) and after that obtain help with "getting it right".
The programmer you use depends on which chip your using, if your programmer will programme the
,with the hex file that i gave ,then use it, otherwise choose the pic chip first then the programmer.The programmer you use depends on which chip your using, if your programmer will programme the 12f675 ,with the hex file that i gave ,then use it, otherwise choose the pic chip first then the programmer.
If you want a pulsed output after 3 months, i can alter the programme for you.
If you want a pulsed output after 3 months, i can alter the programme for you.
The programmer you use depends on which chip your using, if your programmer will programme the 12f675 ,with the hex file that i gave ,then use it, otherwise choose the pic chip first then the programmer.
If you want a pulsed output after 3 months, i can alter the programme for you.
56 milliamps????? Good grief, something is very, VERY wrong. A PIC12F675 running in the LP Oscillator Mode (which is the mode you should be running in) draws only 35 μA typical at 5 volts, and only 18 μA at 3 volts. Even when running at 4 MHz in the INTOSC mode, the 12F675 only draws 1.1 mA, maximum....with the MCU using the program that Dave made me when programmed it begins to draw 56mA way to much...
by Aaron Carman
by Jake Hertz
by Jake Hertz
by Jake Hertz