2WD Robot Smart Car Chassis 2x Wheels DIY

It allows removing the solder residues from the tips.
It cleans better and does not cause temperature drops like with sponges.
You do not need extra water to clean the tip.
Easy and effective cleaning at the tip.
Soldering Tip Cleaning Ball features:
- Dimensions: diameter 50mm

It allows controlling many different types of engines: - Up to 4 bidirectional current motors
- Up to 2 stepper motors (unipolar or bipolar) In addition it is provided with two connectors for servos.                   L293D Motor Drive Shield Expansion Board features:
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 36 V
- Maximum current: ± 1.2 A (650mA)
- Logic voltage: 5V
- Controller L293D
- Measures: 70x55x20 mm L293D controller consists of 4 H bridges with 650 mA current with thermal protection.
Pull-down resistors keep the motors off during startup.

Characteristic: -Conductor: solid wire, tinned copper
-Insulation: PVC
-Low voltage electrical cables -Rated voltage 300V / 80C -Standard: UL 1007
-Number of conductors: 22AWG, 1x0.35mm2
-Outer diameter: 1.6mm

Momentary Switch Push Button Red N/O 7mm features:
- Momentary pushbutton N/O (normally open)
- Red button
- Dimensions approx. 7 mm x 27 mm
- Recessed with nut and washer
- Load current (supported): 1A to 230V / 2A to 125V
- Drill to embed: 7 mm +/- 0.2
- Operating temperature: -55º to +85ºC

The optical module (reflective) sensor with CMOS Schmitt inverter 74HC14D, which detects obstacles with high precision. The ideal obstacle detection detector for the installation of smart robots. TCRT5000 - reflective optical sensor that has a compact construction where the light emitter and receiver are placed in the same direction to detect the presence of an object using infrared reflection on the object. The working wavelength is 950nm. The transmitter is infrared LED and the phototransistor receiver.
The sensor allows the detection of an object at a distance of up to 15 mm. TCRT5000 IR Infrared Sensor Module features:
- The module has an output: digital
- CMOS Schmitt inverter 74HC14D
- Power supply: 5V - Range: 0.2 mm - 15 mm

28BYJ-48 Stepper Motor 12V + Driver Board ULN2003 features:
- Stepper motor 28BYJ-48 + ULN2003 controller
- The 28BYJ-48 has everything you need to start using motors step by step in your project
- A stepper motor converts digital impulses into small steps of movement in one direction
- The motor also comes with a ULN2003 motor controller card
- Can control two DC motors or a motor with bipolar steps with a maximum amperage of up to 500 mA
- Equipped with state indicator LEDs A, B, C, D
- Engine model: 28BYJ-48
- Phasing Engine: 4
- Operating voltage: 12V DC
- Frequency: 100 Hz
- Operating current: 200mA
- Max Power: 20W
- Winding resistance: 70 Ohm
- Angle per step: 5,625º
- Steps per round: 64

- The PCF8574P is an 8-bit remote I / O expander for the I2C bus with 16-pin DIP packet interrupt. - Provides general-purpose remote I / O expansion via a two-wire, two-way I2C bus (Serial Clock (SCL), Serial Data (SDA)).
- Devices consist of eight quasi-directional ports , 100KHz I2C bus interface, three hardware address inputs and interrupt output operating between 2.5V and 6V.
- Quasi-bidirectional port can be independently assigned as one input to monitor interrupt status or keyboards or as an output to activate indicating devices like LEDs. - System Master can read from the input port or write to the output port through a single register.

WIFI transceiver based on the ESP8266 controller.
It has a microcontroller and 2 GPIO pins to be able to operate autonomously without the need for an external microcontroller. Characteristic: - Voltage of power: 3.3V
- Supported protocols: 802.11 b / g / n
- Network support: 2.4 GHz
- Band: 2400 (MHz)
- Wi-Fi Direct (P2p), Soft Access Point
- Integrated TCP / IP stack
- PLL, regulators and integrated power management units
- Output power: 0.15 (W); + 19.5dBm in 802.11b mode
- Consumption in low power mode: