When the condition of the purchase of green laser pointer is allowed

green laser pointer  is utilized to observe the star they want to gaze
But poor sensitivity, there are serious mechanical hysteresis. Due to the steering gear of the current changes, the interference steering gear can be a separate power supply, and in series between the positive power supply and steering diodes or opto-isolation to prevent the steering gear power supply voltage. This effectively reduces the steering gear of the mechanical hysteresis, so the car to stabilize the fast-moving, the steering gear control using open loop control. Steering gear power supply system is the transformer regulator chip L7805 is to rely on based on the circuit in parallel with the 78L05 to provide steering gear power steering gear and the microcontroller is also connected to, and 6N137 chip series, isolated by optocoupler, and thus prevent recoil current burn SCM.Therefore, the green  green laser pointer  is getting more and more orders
In addition, static work, its input and output potentials are zero, in connection with other integrated operational amplifier, you do not need to consider their level configuration. LM324 is a four-channel low-power op amp, its interior contains four groups of exactly the same in the form of op amp, in addition to power sharing, the four groups of op amp independent of each other, their performance parameters in the following areas: single-supply works, work power level 3V to 30V. Low current consumption: 0.8 mA. Low Input Offset: offset of the input voltage: 3 the mv (Typ); offset of the input current: 2 nA (Typ). Open-loop gain: 100V/mv = 100 dB (Typ) Wide response band. When the condition of the purchase of  green laser pointer  is allowed.
At the same time rely on the microcontroller pwm duty cycle to control the operation of the steering gear. Figure 3.3 6N137 schematic control system design system block diagram and working principle of laser detection-based smart car system block diagram is shown in Figure 4.1, the data collected by the laser sensor to complete the detection of black lines, and the form of a voltage signal into the microcontroller IO port 16 5 mA laser reflector head on the pavement to identify seven laser receiver to receive the feedback signal, microcontroller sent signal analysis, processing, issued a directive on the car after treatment to exercise control, to make electric cars in the moving direction can be adjusted [9].