Search found 115 matches

by hp
Fri Dec 10, 2004 8:15 pm
Forum: General Discussion
Topic: What's everyone working on?
Replies: 52
Views: 18807

Re: What's everyone working on?

My 'current' project is a networkable weather station that is totally pc independent. I love the idea of being able to network devices without the need of a pc.<p> http://mirror.fwdweb.com/misc/images/weatherstation01.jpg <p>You can view the weather station at http://weather.homelinux.com/ (it's not...
by hp
Mon Dec 06, 2004 5:31 pm
Forum: General Discussion
Topic: Is this display PIC compatable?
Replies: 19
Views: 2522

Re: Is this display PIC compatable?

You should only need one of the connectors on the LCD. You probably won't use all the pins on the connector because most compilers use hd44780 based lcds in 4-bit mode.<p>Harrison
by hp
Tue Nov 30, 2004 5:46 pm
Forum: General Discussion
Topic: Al Williams, Book
Replies: 10
Views: 2029

Re: Al Williams, Book

You could go to his original pcb page at http://www.wd5gnr.com/pcb.htm . Sroll down to the disclaimer section and click the 'E-mail me' link. I did not want to post his address here because the internet has become a massive spam melting pot.<p>You can also go to his main website here http://www.al-w...
by hp
Mon Nov 29, 2004 8:59 pm
Forum: General Discussion
Topic: Is this display PIC compatable?
Replies: 19
Views: 2522

Re: Is this display PIC compatable?

Looks like it follows the standard HD44780 based LCD controller pinout so it should work with almost all of the PIC compilers out there. Since you will probably be using PICBasic Pro you should have no problems using that LCD.<p>Harrison
by hp
Sat Nov 27, 2004 12:40 pm
Forum: General Discussion
Topic: Circuit Board Layout
Replies: 5
Views: 741

Re: Circuit Board Layout

Not to be mean or anything, but why are you spending your 'time' spamming this forum?
by hp
Mon Nov 22, 2004 8:12 am
Forum: General Discussion
Topic: PIC C Reference?
Replies: 6
Views: 1222

Re: PIC C Reference?

A standard ANSI C book from a library is good enough to learn C.<p>Then just look at your compiler's syntax manual to see what the compiler supports and work on from there.<p>I would recommend CCS C. The only problem with the CCS C compiler is that it is not very stable. The CCS people release a new...
by hp
Sun Nov 14, 2004 4:42 pm
Forum: General Discussion
Topic: Electric scooter
Replies: 10
Views: 1413

Re: Electric scooter

Did you look deep into the site that jwax provided? It has a how to fix the controller at http://www.scootngo.com/scootngo-controller.html. It also has some pretty neat fixes for broken battery cables and such. Not a bad site, if you look carefully.<p>Harrison
by hp
Sat Nov 13, 2004 9:47 pm
Forum: General Discussion
Topic: TCP/IP Monitor
Replies: 8
Views: 1543

Re: TCP/IP Monitor

Well, usually when an access point fails the network act lights will stay off. You could use this to your advantage. <p>Just put a phototransistor in front of an LED that will stay off / on durring a failure write a program for a microcontroller to monitor that phototransistor and reboot the ap if t...
by hp
Sat Oct 30, 2004 6:52 am
Forum: Computer Programming
Topic: Have VB Create a .csv file
Replies: 2
Views: 1601

Re: Have VB Create a .csv file

If you use visual basic's write statement then you can write directly to csv file format.<p>Here is an example:<p>Dim data1 as Integer Dim data2 as String<p>data1 = 54 data2 = "Serial Ok"<p>Open "file.csv" for Append as #1 Write #1 data1, data2 Close #1<p> Your file.csv should now contain: "54","Ser...
by hp
Mon Oct 25, 2004 7:44 pm
Forum: General Discussion
Topic: Computer controlled relay
Replies: 15
Views: 3161

Re: Computer controlled relay

Take a look at this thread that you posted a while back http://206.131.241.58/ubb/ultimatebb.php?ubb=get_topic&f=1&t=002193&p=1 . That thread has links to reading temperature using a dallas temp sensor. Then use the mscomm control to turn a relay on or off.<p>Seriously, don't try using some odd sens...
by hp
Thu Oct 14, 2004 8:18 pm
Forum: General Discussion
Topic: LM34 to computer
Replies: 15
Views: 3169

Re: LM34 to computer

Of course you can use two chips. You can use any two of the RI, CTS, and the DCD pins. Make sure you use some sort of buffer between the serial port and the sensors. A 1k or so resistor should do.<p>The software can be easily written in vb using the mscomm control. Of course this implies that you ar...
by hp
Thu Oct 14, 2004 4:48 pm
Forum: General Discussion
Topic: LM34 to computer
Replies: 15
Views: 3169

Re: LM34 to computer

The MAX6502 only switches on when a certain temperature has been met. So you won't be able to measure the temperature unless all you want to do is trigger something when a certain temperature has been reached.<p>And yes, you can connect that sensor/switch to the serial port. Connect the sensor out t...
by hp
Wed Oct 13, 2004 4:35 pm
Forum: General Discussion
Topic: LM34 to computer
Replies: 15
Views: 3169

Re: LM34 to computer

The lm34 puts out 10mv per deg F. It is an analog device that would require an ADC for computer interfacing.<p>Harrison
by hp
Thu Oct 07, 2004 8:28 pm
Forum: General Discussion
Topic: LM34 to computer
Replies: 15
Views: 3169

Re: LM34 to computer

The LM34 isn't a good choice for an interface to a computer unless you have some sort of data acquisition board on your computer. You could also use a pic with built a built in adc.<p>I would recommend a digital thermometer for your temperature measuring needs. An example project using a digital the...
by hp
Wed Aug 25, 2004 7:27 pm
Forum: General Discussion
Topic: Temp guage for car
Replies: 28
Views: 4789

Re: Temp guage for car

The LM34 outputs 10mv per degree F. This means all you would need is to connect the output of the LM34 temp sensor to the input of a panel meter.<p>Just make sure to feed regulated 5volts to the meter and the LM34. Also make sure that your dc power is clean since automobiles have horrible electrical...