Recent content by ahfa

Thanks Baluncore, will do all this and get back to tou.

Hi Baluncore, there is no voltage out from pin 11 13, when pin 8 is grounded. The buzzer is not going atall even after both steps you asked. Thanks

Hi Baluncore, I replaced cd4017, but still no joy. This is last circuit. I did debugging and there no signal out from pin 11 and 13. However again if I don't ground 8, there is a continuity and buzzer/led goes on. But with the flow its not stopping. 555 output is pulsing I checked. Thanks

Hi Baluncore, I took out the flow sensor signal and connected pin 8 to -ve the buzzer but it stops the signal out from counter ( pin 13 and 11) , I checked it with led. This is the case even If I left the signal wire in. I have got the 4k7 resistor to be placed in...

Hi Baluncore, I checked everything again. Few points that I observe and few things that I want to ask. > The diode blow up earlier could be due to the reason I placed capacitor with reverse polarity, corrected it now if it was a case. >I bend the pins of CD 4017 (1-7), so that they don't...

Hi Baluncore, I replace the diodes and 555 timer. placed a resisitor (100k)in series with signal out. Now the circuit is not drawing any current when I power the flow sensor. I have checked the supply is going all the way. Cheers

I will check polarity of diode , could have placed them reverse. I am using car battery for power. I have connected based on diagram , diodes in series to +ve. I will try everything again soon and let you know. > will check diode polarity > resistor on input pulse Please note that there was...

Hi Baluncore, I tried this circuit but it worked for a second, that it is with no flow , alarm went on but than there was smoke where I bridged both the diode and it stopped. I changed both the diodes but it did not work again. Any insight will be much appreciated. I am not sure whether they...

Thanks Baluncore, I will give this a try on weekend and will definitely let you know how I go. Many thanks for the detailed answer. cheers Ahfa

Hi Baluncore, Thanks for replying http://www.ebay.com.au/itm/G3-4-034-Hall-effect-water-Flow-Sensor-Counter-DC3-24V-1-60L-min-Switch-Flow-Meter-/390600219998?_trksid=p2054897.l4275 Alarm http://www.jaycar.com.au/productView.asp?ID=AB3452&CATID=79&form=CAT2&SUBCATID=984#1 Thanks

Dear all, I am mechanical engineer with no background to circuitry and electronics. I am trying to connect a flow switch ( using hall effect ,12 dc input) and I want it to trigger a piezo alarm (12V dc) when water flow stops. There are three wires from the flow switch, two for power and...