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Re: Help needed to design a circuit
Hi Chuckey, You are correct, 2s delay is needed, else first push will always trigger right indicator. also a third push should cancel either indicator. I can either use two automobile indicator flashers at the relays or will need to incorporate two astable...
Hi guys, can you please help me create a small circuit for my motorbike. This is the requirement:
When a push to on button is pressed once Relay 1 should be ON for 30 seconds. When I press the same button twice, another relay, Relay 2 should be on for 30 seconds.
Let me explain the use of...
Update:
Yesterday I recieved the push button and 80A Relay from Dealextreme. Took almost a month for shipping.
Today I managed to dismantle the key barrel of Matiz and studied the OFF, ACC, IGN ON and Engine start characteristics. Really took some time to understand the functioning. Eventough...
I made the circuit. Everything is working as it should be other than one small problem. When I power on the circuit, the 555 is triggered sometimes. so sometimes the relay is activated when 12v is connected to the circuit, which is undesired as we need the ignition ON only after sensing the...
Sorry, My mistake, Emitter of that transistor was not grounded. Now it is sensing the trigger from Fingerprint module.
Yes, the delay of monostable mutivibrator is not enough. I need to add a 10K resistor to the present 47K+22K. Thanks. Let me try and let you know
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Manu, The circuit is perfect, thank you, but the input from fingerprint module is not detected as trigger for 555. As I said before the finger print module outputs short pulse of 5V(multimetwr readings). When I use the 12V from supply as trigger it is working perfectly. Which resisitance value...
Manu, C3 is paper or electrolytic? I've 1uF both paper and electrolithic capacitor. going to test the circuit in breadboard now
Edit: Sorry, I got only Electrolytic type. 1uF 63V
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