![]() Let us know if you have any problems creating your circuit. Using good quality Led will provide accurate output.The voltage and current rating of the 555 timer are: – 15v & 200mA.Additional voltage cannot be provided within the 555 timer.The Led series registers used here prevent the Led from going to the Over Voltage.Here the resistor between the two ICs also provides the Triggering Pulse by a series of capacitors, this Component helps to supply two specific voltage supply.Now by entering the voltage through the connected resistor on the battery positive terminal, the yellow Led will ignite.The length of the red LED will depend on the capacitor charge.Here, the voltage on the input of the first 555 timer (U1) is given at the output at the pin 3 of the result, so that the red led will ignite.All developers, with any skill level, are welcome to join the B4X community. B4R (free) - Arduino, ESP8266 and ESP32 development. B4J (free) - Desktop and Server development. If you want to know the details, please read the circuit analysis. Welcome to B4X forum B4X is a set of simple and powerful cross platform RAD tools: B4A (free) - Android development. This way the 555 timer controls the Led like Traffic Light. When an input voltage is provided to the 555 timer the timer returns the output periodically. Here the Led is connected to the output of both the 555 timers. ![]() Led on-off through the 555 timer IC’s specific timing.Now connect the resistor to pin 3 of the U2 IC and connect the green led positive end in series and connect the other end to the negative of the battery.Again, connect the negative end of yellow led to pin 7 of the U2 IC. Now connect one end of the 220-ohm resistor to the battery positive and the other end to the positive of the Led (yellow).Then connect the pin 6 and 2 of the IC (U1 & U2) and connect it to the connected part of the resistor and capacitor.Now connect the negative end of the capacitor to the battery negative.Now connect the positive end of the capacitor to one end of the 47k register and connect the other end to the pin 3 of the U2 IC.Then connect the negative end of the red led at the pin 3 of the U1 IC and connect the positive edge to the battery positive.Now, connect the pin 2 and 6 of the U1 IC to the connected end of the resistor and capacitor.Now connect the first end of the 100k register to pin 8 of the U2 IC and the other end to the positive of the capacitor, the negative end of the capacitor to the negative of the battery.Connect of the number 1 pin of U1 and U2 timer to the negative point of battery.I am designing this with the assumption that cars will. So far I have the lights set up to change following the UK light pattern without using delays. ![]()
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