Chip lm393 compared the resistor value, when there is an imbalance, the chip will control one motor to stop, while other motor accelerate rotation, in this case, the car can correct direction. The whole process is closed-loop control, so it can be quickly controleed
1 x lm393 voltage comparator
1 X 8P IC Socket
2 X 100uf capacitor
2 X 10K resistor
2 X 3.3K ohms color ring resisotr
2 x 10K resistor
4 x 51 ohm resistor
2 X 1K ohm resistor/
2 X 10 ohm resistor
2 X CDS5 photoresistor
2 X 3MM led
2 x 5MM LED
2 x 8550 TRIODE
1 x Switch
2 X Motor
6 X Wheel
1 X AA battery case
Several screws and wires
Description for FS90R Servo:
Dimensions:23.2 × 12.5 × 22 mm
Operating Speed :
Stall Torque :
Operating Voltage: 4.8V~6V
Control System: Analog
Operating Angle: 360degree
Required Pulse: 900us-2100us
Bearing Type: None
Gear Type: Plastic
Motor Type: Metal
Connector Wire Length: 20 cm
Description for wheel:
This black plastic wheel is press-fit onto the FS90R output gear shaft, and easy to make a nice drive solution for small robots. The wheels have silicone tires and measure 60 mm (2.36″) in diameter. Two additional mounting holes for 3-40 screws make it possible to use the wheel with several of mounting hubs.
1 X Feetech FS90R Servo
1 X Wheel
1 X Screw
Easy to tear off, to have control of expansion, thin, with flexibility, smoothness, anti-metastatic and anti-solvent,
Chipping, anti-retraction peel.
Greatly increased the adhesion of printing supplies and heating plates, effectively reducing the ABS supplies occur when printing curling, deformation and other issues.
1 X 3M Heat Resistant Adhesive Blue Tape
Collection O-Rings in the midst of the pleasant resealable plastic case.
Add up to 6 most famous utilized O-rings Sizes
Application temperature running 'tween - 45 degrees C and 165 degrees C polymer Material: Rubber
The L9110S 2-Channel motor driver module is a compact board that can be used to drive small robots. This module has two independent motor driver chips which can each drive up 800mA of continuous current. The boards can be operated from 2.5V to
12V enabling this module to be used with both 3.3V and 5V microcontrollers.
A set of female header pins is used to connect this module to a microcontroller.
The motors are attached via two sets of screw terminals.
A PWM Pulse Width Modulation signal is used to control the speed of a motor and a digital output is used to change its direction. This module can also be used to
drive a single four line two phase stepper motor. Four holes make this board easy to
mount onto your robot or other project.
On-board 2 L9110 motor control chip
Module can be driven by two dc motors at the same time or one phase 4 line 2type stepping motor
Input voltage: 2.5-12V DC
Each channel has a continuous output current 800 ma
PCB Size: 29.2mm x 23mm
1 X L9110 L9110S 2 Channel Motor Driver
Thermistor Temperature Sensor NTC MF52-103 3435 10K ohm 1%
Resistance and precision R25: 100kΩ ± 1% (at25 ℃)
B value and accuracy B25 / 85: 3950K ± 1%
Dissipation factor: 2 mW / ℃ (in air)
Thermal time constant: 12 s (in air)
Power Rating: 2.5 mW (at 25 ℃)
Operating temperature: -40 ~ 250 ℃
1 x 100Kohm NTC Thermistor
Reprap 3D Printer Part Locking Spring Tensioner for MXL & GT2 Timing belt 10PCS