The circuit allows to operate an light bulb with a pre defined time period on daily basis automatically.
Ex: Assume a garden light needs to switch on 8.00 pm and needs to switch off 11.00pm daily basis. The solution is a predefined timer to switch on & off the bulb. So here is the solution & it will do the job on daily basis automatically.
Features
* User define hour adjustments
* Remaining hour’s indicator
* Timer ON /OFF function
* Manual lamp ON / OFF function
The circuit has two buttons & one indicator.
Button1 = mode (turns on & off timer/edit mode)
Button2 = adjust (manual on & off/adjust hour counts)
Led on = stand by
Led blinking = timer running
Manual lamp ON / OFF function
In standby mode pressing the adjust button will allow to switch on & off the lamp
Timer ON /OFF function
Press the mode button it will turn on or off the timer.
Led on = stand by (Timer Off)
Led blinking = timer running
Remaining Hour’s Indicator
If the lamp on if it blinks 8 times followed by a long gap it says the lamp will off in another 8 hours.
If the lamp off if it blinks 4 times followed by a long gap it says the lamp will on in another 4 hours.
User define hour adjustments
Press & hold the mode button for 4 seconds & it will go to the edit mode (The LED will go off in the edit mode). Now press the adjust button to the required hours (LED will flash on every press). Ex - If need to turn off the lamp in 6 hours then press the adjust button 6 times. Press the mode button & it will save the newer value & will start the timer.
Operation
When power up or after a power failure the circuit in standby mode (Led on continuously) & the lamp is in off state.
To turn on or off the lamp manually (without a timer) just press adjust button & it will toggle the output lamp.
If you need to turn on the timer then press the mode button once & it will starts the timer running (Led blinking).It will control the lamp automatically with the pre defined time periods.
To turn off the timer just press the mode button.
Schematic
Ex: Assume a garden light needs to switch on 8.00 pm and needs to switch off 11.00pm daily basis. The solution is a predefined timer to switch on & off the bulb. So here is the solution & it will do the job on daily basis automatically.
Features
* User define hour adjustments
* Remaining hour’s indicator
* Timer ON /OFF function
* Manual lamp ON / OFF function
The circuit has two buttons & one indicator.
Button1 = mode (turns on & off timer/edit mode)
Button2 = adjust (manual on & off/adjust hour counts)
LED Indicator
Led on = stand by
Led blinking = timer running
Manual lamp ON / OFF function
In standby mode pressing the adjust button will allow to switch on & off the lamp
Timer ON /OFF function
Press the mode button it will turn on or off the timer.
Led on = stand by (Timer Off)
Led blinking = timer running
Remaining Hour’s Indicator
If the lamp on if it blinks 8 times followed by a long gap it says the lamp will off in another 8 hours.
If the lamp off if it blinks 4 times followed by a long gap it says the lamp will on in another 4 hours.
User define hour adjustments
Press & hold the mode button for 4 seconds & it will go to the edit mode (The LED will go off in the edit mode). Now press the adjust button to the required hours (LED will flash on every press). Ex - If need to turn off the lamp in 6 hours then press the adjust button 6 times. Press the mode button & it will save the newer value & will start the timer.
Operation
When power up or after a power failure the circuit in standby mode (Led on continuously) & the lamp is in off state.
To turn on or off the lamp manually (without a timer) just press adjust button & it will toggle the output lamp.
If you need to turn on the timer then press the mode button once & it will starts the timer running (Led blinking).It will control the lamp automatically with the pre defined time periods.
To turn off the timer just press the mode button.
Schematic
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