Thank you, I will start with the simple blink and work my way up, if I have problems after my next attept I will ask for help. ----- Original Message ----- From: "Mike Hord" To: Sent: Monday, April 19, 2004 3:05 PM Subject: Re: [PIC:]Rocket camera timer > This is a fairly simple project, so I don't think you'll have too much > trouble. > > First, check the following site: > http://www.voti.nl/swp/index.html > > The gentleman who authored it frequents the mailing list. > > Second, get the blinking circuit to work! > > Third, here's my approach: > > Use a 12F675 (since you have them). Run it with a 32.762 kHz crystal, > since many are built to be sturdy and that's important. > > Use busy loops to wait the appropriate number of cycles (.5 sec is 4096 > cycles). Ta-dah! Accurate to 20 ppm, and probably costs less that $2. > > If you need less accuracy, you can do it using the internal oscillator... > > Mike H. > > >I'm currently building a mid sized camera rocket using a Kodak F-350 aps > >camera, it has an electronic shutter. I will be using two switches the > >first > >will engage very shortly after ignition and the second will make momentary > >contact when the chute opens. > > > > The first switch will start a program where a 1/2 second pulse will be > >triggered every 1.5 seconds for a total of 5 pulses then when the second > >switch engages the first program is bypassed and a second program starts a > >1/2 second pulse every 5 seconds for a total of 5 pulses, then the chip > >shuts down regardless of any input. > > > >I'm very new with programming and have only programmed one pic with the > >blink program and it didnt work once put in the circuit, I have a few > >pic16F84A and have some 12F675 comming in soon. I have quite a bit of > >electronic knowledge, but programming is greek to me. > > > >Anything that would help would be great > >Mike > > > >-- > >http://www.piclist.com#nomail Going offline? Don't AutoReply us! > >email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > _________________________________________________________________ > FREE pop-up blocking with the new MSN Toolbar get it now! > http://toolbar.msn.com/go/onm00200415ave/direct/01/ > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body