Name: Weeemake WeeeBot 3-in-1 STEM Robot Kit
SKU: 3758
Availability: OutOfStock

This WeeeBot 3-in-1 STEM Robot Kit consists of powerful mainboard ELF, anodized aluminium mechanics, and a smart modular electronics system. 3 forms to assemble: WeeeBot Coding Car, Smart Lamp, and Distance measuring robot.

Specifications:

1) ELF Mainboard:

Weeemake ELF mainboard is designed based on a modular design style whose microchip is replaceable. This high-performance mainboard is designed for education.

Replaceable microchip: Support ATMEGA-328P, ESP32 chip, etc
Same port for the motor driver and sensor pin port, easy to use.
Random wiring, work with WeeeCode and Arduino.

Operation Voltage:	6-12V
Wiring Port:	1x MCU port (ATmega 328p or ESP32)
	4x RJ11 port
	2 x DC motor port
	6 x pin conversion port (4 of which can be stepper/encoder/dc motor port)
	1 x Wireless Communication port (Bluetooth 2.4G)
	1x USB port (type B)
Onboard Electronics:	1x Buzzer
	1x Button
	1x RGB LED
Software:	WeeeCode (Scratch 3.0)
	Arduino IDE

2) RGB Ultrasonic Sensor:

The RGB ultrasonic sensor is an electronic module used to measure the distance with a measurement range of 4 cm to 500 cm. It can be used to help a car avoid obstacles or other projects related to range. The ultrasonic transmitter sends ultrasonic waves in a certain direction and starts counting time. The ultrasonic wave spreads in the air, and when the obstacle is encountered on the way, it returns immediately. The ultrasonic receiver immediately stops timing while receiving the reflection wave. The transmission speed of the sound wave in the air is 340m/s. According to the time (T) recorded by the timer, the distance (S) between the transmitting point and obstacle is calculated, that is, S = 340*T/2.

At the same time, both ultrasonic probes have a built-in RGB LED light.

Operating Voltage	5V DC
Detection Angle	≤30°
Detection Range	4-500 cm
Resolution	1cm
Ultrasonic Frequency	42kHz
Probe Angle	60°±15°
RGB LED	2
Size	100 x 32 x 30 mm
Wiring Port	4P4C RJ11
Communication	1-wire, built-in MCU

3) Double-way Line-following Sensor:

The line-following sensor uses the feature of infrared that will get different reflection strengths on different colour surfaces. During the driving process of the robot car, the line-following sensor continued to transmit infrared light to the ground. When infrared light encounters a white surface, a long reflection occurs and the receiver on the sensor will receive that reflected infrared; When infrared light encounters a black surface, the infrared light is absorbed, and the sensor’s receiver cannot receive infrared or receive very few. The position of the black or white line is determined by whether to receive the infrared light returned from the reflection or not.

The double-way line-following sensor has two groups of infrared transmitter and receiver tubes S1, and S2.

Operating Voltage	DC 5V
Detection Range	1~2cm
Communication	1-wire
Peak Wavelength of Reflective Wave	940nm
Dimensions	55 x 24 x 18.5 mm
Wiring	4P4C RJ11

4) LED Matrix Panel:

The LED panel matrix screen is composed of a blue LED light into a matrix, which can control display numbers, letters or symbols. The LED distribution is 5 rows multiple 7 columns. The sensor comes with a half-transparent black cover.

Operating Voltage	DC 5V
Working Temperature	0 ~ 70℃
LED Color	Blue
Matrix	7*21
Communication	1-wire
Dimensions	94 x 30.5 x 12 mm
Wiring	4P4C RJ11

5) Light Sensor:

The light sensor is a sensor based on the principle of optoelectronic effects of semiconductors (converting optical signals into electrical signals). It can detect the light intensity of the environment around the sensor, convert the strength of light into an electrical signal, and transmit it to the mainboard.

Operating Voltage	DC 5V
Output Signal	Analog
Spectral Bandwidth	400nm-700nm
Operational Lag	15us
Return Value	0-1023
Dimensions	15 x 12.7x 16 mm
Wiring	5 Pin

6) Sound Sensor:

Sound Sensor converts the voice signal to an electrical signal based on a microphone. It can be used to detect the sound intensity in the surrounding environment. The detected volume is enlarged by a computing amplifier and then transmitted to the mainboard. It can be used to do interactive projects, such as voice control switches, volume control robot cars, etc.

Operating Voltage	DC 5V
Output Signal	Analog
Microphone Sensitivity (1 khz)	52-56dB
Microphone Frequency	16-20Khz
Return Value	0-900
Dimensions	15 x 12.7x 16 mm
Wiring	5 Pin

7) IR Receiver:

The IR receiver has a component that can detect about 38kh IR signals, which can receive infrared signals emitted by the IR remote control. IR remote control is currently the most widely used communication and remote control method, with the advantages of small size, low power consumption, strong signal, etc.

Operating Voltage	DC 5V
Frequency	38KHZ
Peak Wavelength of Infrared	940 nm
Signal Receive Angle	90°
Working Distance	10 meters
Communication	NEC
Dimensions	15 x 12.7x 16 mm
Wiring	5 Pin

8) IR Remote Controller:

IR remote controller is a commonly used remote control device. It has an IR transmitting light. When pressing the buttons on the remote control, a specific IR light signal will be emitted. This signal is received by the IR receiver and interpreted the signal.

Operating Voltage	DC 3V (Button cell CR2025, not included)
Frequency	38KHZ
Button Quantity	21
Signal Emit Angle	60°
Working Distance	8 meters
Communication	NEC
Dimensions	90 x 41x 12 mm
Button Life	80000 times

9) Bluetooth 4.1 Module:

This Bluetooth module is designed for remote control. It can connect to the mobile phone Bluetooth, computer Bluetooth, Bluetooth dongle, etc. Not only can it be remotely controlled robots, but also wireless programming, download programs, etc.

Operating Voltage	DC 5V
Bluetooth Mode	BT4.1 (BLE)
Frequency	2.4GHz-2.48GHz
Transmission	Max. 4dBm
Working Distance	20 meters (no barrier)
Communication	UART
Dimensions	25.7 x 20.8 x 3.5 mm
Wiring	Pin