How to build master slave clocks with pic micro

koolguy

Active Member

• Mar 12, 2015

• #21

Hello,
I just found nice project on Gps clocks
https://www.sparkfun.com/tutorials/47

 

koolguy

Active Member

• Mar 14, 2015

• #22

Hello again,
How to communicate the slave clock master will have Ds1703 RTC in it, for communication which is best ?

 

koolguy

Active Member

• Mar 15, 2015

• #23

hello,
in case of wireless it will costly for customers..so, any other communication for less wires and more length..

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Mar 16, 2015

• #24

For distance, use RS485..... Its nearly the same as RS232, but designed for greater distance... It is a bit more robust!!

 

koolguy

Active Member

• Mar 16, 2015

• #25

One thing more i am using LM35 with PIC16F72 i want to connect 7 segment Display the range i want is 0 to 99 on 2 digit!
5V is working and reff. value for uC also ADC.
5V/255=19mV per bit,right?
and 10 mV mean 10*C...

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Mar 16, 2015

• #26

I wrote some software for that somewhere!! I'll dig it out for you!

 

koolguy

Active Member

• Mar 18, 2015

• #27

hello,
the 8 bit ADC micro will do 255 steps of 5V which mean 19.0mV as, 5/255=19mV so, how to convert in *C...?

 

koolguy

Active Member

• Mar 21, 2015

• #28

Ian Rogers said:

I wrote some software for that somewhere!! I'll dig it out for you!

Click to expand...

Hello,
is LM 35 is fine for Temperature sensor can we use other like DS18B20, which is reliable?

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• Mar 21, 2015

• #29

koolguy said:

Hello,
is LM 35 is fine for Temperature sensor can we use other like DS18B20, which is reliable?

Click to expand...

One Wire is a bit of a learning curve.... I have written a library for that as well... Got to find it though...

I wrote these ages ago and will be on a computer somewhere!!

 

koolguy

Active Member

• Mar 23, 2015

• #30

Hello ,
For scrolling display for getting bold font without changing the font look up table can we make 5x7 font 1 pixel of 4 leds to get more high light??
i got STP16CP05 which say Vout 20max bout V supply is 7 max i am confused with it ?