Combine two types of Circuits of a common purpose

[reinaldo]

Hey Everybody!...i want to "combine" or "Mash up" a Design that I did with a design i found on the internet!...It is a Distance meter by Ultrasound!...in my circuit i used PIC16F88 to control a LCD screen
wich showed me the distance in %...and it had two setpoints!...one low and one high!...if it reaches the low point it triggers a buzzer, and vicecersa...i design it for to mantain a distance between a range!...

Soo...what is my problem...i want to control a water tank in the back of my house...but i want to be able to see the display from a not too far distance...so i want to change the LCD display for a 3 digit 10mm Height 7 segment display!...the buzzer system i want to change it for a much louder buzzer so i can hear it from inside the house, and for the "buzzer alarm" system also i want to add two light bulbs of 60W...one Red for Low level and one Green for high level...so how do i make the power alarm system couple to the digital circuit??...optocouplers??...how??...and how do i change the LCD
for the 7 segment display??...im using the LV-MaxSonar-EZ1 ultrasonic transducer!...

in conclusion...i found on the internet two circuits diagrams that uses the 7 segment displays but no alarms...and they used different ultrasonic transducer...im new at digital electronics so i want to mantain my original circuit diargram with my transducer but with the 7 segment display and the alarms system much more louder and with the indicatived lamps red and green!

I appreciate so much what you can do!...

this are the internet links for the other two circuits!


http://www.best-microcontroller-proj...pic-sonar.html

http://hobby_elec.piclist.com/e_pic6_6.htm

 

[reinaldo]

Here is a pretty rough scheme of what I am doing and need...Merry Christmas and Happy new year!

 

[oswaler]

Thank you for sharing your project with us! It sounds like you have a great idea for combining two different circuits for a common purpose. To start, I would recommend looking at the specifications for the two different circuits you found on the internet and comparing them to your original circuit. This will help you determine if any changes need to be made to the components or connections in your original circuit in order to incorporate the new features you want to add.

For the LCD to 7 segment display conversion, you will need to find a way to convert the output from the PIC16F88 to a format that can be displayed on a 7 segment display. This may involve using additional components such as a decoder or multiplexer. You may also need to adjust the code on the PIC to accommodate the new display.

For the alarm system, you can use optocouplers to connect the digital circuit to the power alarm system. This will allow the digital circuit to control the lights and buzzer without being directly connected to the power source. You will need to carefully select the appropriate optocouplers for your circuit and ensure that they are properly connected.

I would also recommend doing some research on similar projects or circuits that use both a 7 segment display and an alarm system. This can give you some ideas and guidance on how to incorporate these features into your own circuit.

Overall, it seems like a feasible project but it will require some careful planning and possibly some modifications to your original circuit. Good luck with your project and let us know if you have any further questions!