Electronic traffic light with your own hands 4M & ndash; is a research kit that allows you to assemble a toy traffic light model with red, yellow, green light and automatic and manual switching function. The development kit will appeal to children 5-7 years.
Details included
Part A: Front cover x 1, B: Rear cover x 1, C: Control system IC x 1, D: Battery cover x 1 ; E: 2 terminal plugs; F: Screws x 5.
Optional: small Phillips screwdriver, 2 AAA batteries.
Assemble the traffic light from the parts in the diagram kit and see how it works. The finished traffic light will complement the games with roads and cars. Assembling the device will introduce you to mechanics and electronics.
Traffic light operation
There are two controls on the rear panel of the traffic light: a slider and a button. At the center position of the slider, the traffic light turns off.
Slide the switch to the left, and the traffic light will automatically switch cyclically according to the scheme of lights: red, yellow, green, yellow, red, etc. Each light will be on for 2 s.
Slide the switch to the right for manual control. Now press the button to switch from one signal to another in sequence: red, yellow, green, yellow, red, etc.
As arranged
Traffic lights are controlled by digital electronics. It has only two types of electrical signals: on and off. In manual mode, when you press the button, the power signal is transmitted to the circuit, which counts in binary numbers (0 and 1) from zero to three. This meter is connected to light sources. On account 0, it sends a power signal to the red LED, on account 1 & ndash; on yellow, on account 2 & ndash; on the green and on account 3 & ndash; again on the yellow LED. When you press the button again, the counter resets to zero.
In automatic mode, a separate synchronization circuit sends a signal to the counting circuit every 2 s, forcing the light to switch automatically.
Assembling mechanisms with your own hands helps children understand how devices work with daily life. With 4M kits, children learn new things, become involved in science, and learn to focus on achieving results.
