This was because of the inconsistent discharging of the 1000uF capacitor which caused inaccurate timing outputs for each subsequent timing cycles. The reset button at pin15/12 of the ICs can be used for resetting the circuit to original state. Where Cx = required value, Cr = random value capacitor (in uF), Rm = time interval noted from Cr (in seconds) Once the interval is known, the value of Cx for achieving 1 minute time may be calculated with the following formula: The IC 4017 is wired in its ususal decade counter mode wherein its outputs shift a logic "high" across its pin3 to pin6 in response to every single minute pulse by the IC 4060 at its pin#14.Īs requested three LEDs are positioned for indicating the elapsing of 5 minutes, 6 minutes and 7 minutes in sequence across the pin1,5,6 respectively, with the relevant selected colored LEDs.įor setting up the IC 4060 with 1 minute intervl at its pin3, we initially use a randomly selected low value capacitor for Cx and then note down the interval at pin3 for this capacitor.
#6 min timer generator
In the shown 1 to 10 minute timer with display circuit, IC 4060 is configured as a 1 minute clock generator which is acquired at its pin#3. I would also like to have a seven-segment display show the elapsed time. I would like for it to light a Green LED after 5 mins, then turn off the green LED and light an Amber LED at 6 mins, and then turn off the Amber LED and light a Red LED as well as sound a buzzer at 7 mins.
I want it to have an On/Off switch to power the circuit and a Start/Stop button as well as a Reset button. I have a bunch of parts already and I would like to use them if possible.
I am trying to build a circuit to help me with giving speeches.
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