PIC Microcontroller Course Series

ATS (Automatic Transfer Switch) using PIC 16f84A

ATS (Automatic Transfer Switch) is very important application for industry, hotels, offices, school, colleges and domestic as well.
Working of ATS project:
1. If WAPDA is ON then load is remain Connected with WAPDA line.
2. If WAPDA switched OFF then ATS make self to ON Generator. If generator ON with 1st, 2nd or 3rd self then ATS shift the load to Generator else ON Buzzer for indication that generator is not working. (then manually you can do something)
3. During Generator running WAPDA ON then ATS Switched off Generator then shift load on WAPDA line.

Component:
PIC16f84A

Crystal 8MHz

Ceramic Cap 22pf

Step down Transformer (as sensor)

7805 Regulator

ULN2003A for SPDT relay driving

SPDT Relays

LED for indication

Practically implemented (you can order it by email)

You can order us with in Pakistan:
Fayyaz Hussain
Email: electrogarage18@gmail.com

7 Segment Interface with PIC Microcontroller as Up Counter

This very simple project for new user of PIC microcontroller or advance. Here i just want to show how to interface 7-segment Display with PIC controller. Not any big application like Dr. Counter in clinic or Bank tailor etc.

Description:

There are two types of 7 segment one is Common anode and second one is common cathode. In common anode all 7 leds anode terminals are common and controller provide 0 level to On led and +Vcc applied to common terminal of 7 segment. But in common cathode is inverted behavior of common anode. see in following diagram.

Pin out is also mentioned on the above diagram.

I have just create an up counter application with push button, PIC controller 16F84A and 7 segment.

Circuit is as 

Download Files:

for Proteus & MikroC Code  file download click here.