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Automatic-headlamp-control-using-arduino, back in the 50's there was a car (i think gm product) that had auto dimming headlights when meeting another car headlights. it wouldn't be good if headlights or overhead street lights turned your headlights off.. The lamp. then prepare the lamp to be hooked up to the wall plug and the relay one terminal will be connected directly to the plug, the other one will have a cut in the middle of the way, one end of the cut will go to the normally open pin (no1 ) in the relay module, the other one will go to the com1 pin and then the plug., i can't figure from your post what you actually want to happen. it would be common for car headlamps to be switched using relays. presumably you could organize for the arduino to control the relays with some suitable circuits to allow the arduino to control 12 volts..

Here is a simple automatic car headlight,this means when get darker the circuit gonna activate ur car head light automatically ,and switch them off when ligh..., how the ldr operates. light falling over the ldr from the headlight of the vehicle coming from the front instantly lowers its resistance and allows more current to flow to the base of the transistor.. the transistor conducts and activates the relay, which in turn flips the contacts such that the host vehicle's headlamps gets connected with the dipper filament, changing its intensity..

Description. with this cool circuit integrated to your cars headlight system , you can drive cool headed in high beam.the circuit will take over the duty of low beaming the headlight when vehicles approach against , and high beams the lights when they pass over.. the circuit is based on a photo transistor(q1) for sensing the approaching vehicles and transistor q2 (bc177) for switching the ..., automatic headlight switcher. basically, an ldr is a resistor whose resistance decreases with increase in the intensity of the incident light. usually, an ldr exhibits very high resistance in darkness and low resistance in the presence of ambient light. thus a varying voltage drop can be obtained across it with changing ambient light conditions..

New sound and light for an old retro desktop jukebox. make a big led clock with arduino and rtc module to make it as a real time clock. the built-in electronic components from an old canon scanner/printer result in real maker delights. anyone can go to the store and get flowers! use an arduino and some lights to make them magical!, the lamp. then prepare the lamp to be hooked up to the wall plug and the relay one terminal will be connected directly to the plug, the other one will have a cut in the middle of the way, one end of the cut will go to the normally open pin (no1 ) in the relay module, the other one will go to the com1 pin and then the plug.