Go Down

Topic: 4 Digit Seven Segment Display Countdown Timer - Minutes to (Read 33635 times) previous topic - next topic

CrossRoads

Be sure to make all time related variables unsigned long data type.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

nightcrawler218

I am a newbie in Arduino. I have a very little experience with the Atmega8 though. I want to know, Can I burn an Atmega8 via the UNO board & plug out the microcontroller & use it in a personalised PCB for a specific project..?

Kindly help.
"Imagination is more important than knowledge."
-Einstein

CrossRoads

I believe so, isn't Atmega8 used in one of the older board types in the IDE?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

andrew_bluefire

hi...it's my first post...i need to build a similar project and i don't opened another post...

i would use a rotary encoder and catalex display; it's a 7 segments 4 digits display with 1637 controller..but I cannot seem to adjust my display with the sketch that I have ... the project uses an active buzzer and led. I want to make a timer with selectable time encoder and when the time is up, the led for 5 seconds ... I can post the sketch? thanks

andrew_bluefire

i found this: http://www.noveldevices.co.uk/ar-project-timer but i need to use catalex display...can anyone help me?

danielmaticu

Hi,
we are building self service car wash units, and for this purpouse I need this timer. One display is for the client (only display) and the other one is placed in the technical chamber (were are all the pumps and motors and electrical devices)
So when a client cames to wash his car, he buy a token, introduce it into a token reader, and automatically is activated the washing bay. So the timer will show the elaspsed time up to the set time (for example: 4 minutes and 30 seconds; show as 04:30) In this period the client can choose any available program, foam, wax, high pressure rinsing....
This timer should be able also to count how many token was used.

In this kind of application I saw different kind of PLC, but is seem to be so complicated, what I need is something simple and efficient
Thanks

Go Up