CrowBot BOLT is an ESP32-controlled, intelligent, simple and easy-to-use open source robot car. It is compatible with the Arduino and MicroPython environments, with graphical programming via Letscode. 16 learning courses with interesting experiments are available. Features 16 lessons in three languages (Letscode, Arduino, Micropython), fast learning and fun experiments Compatible with Arduino, MicroPython development environment, using Letscode graphical programming, easy to use Strong scalability, with a variety of interfaces, can be expanded and used with Crowtail modules A variety of remote control modes, you can use the infrared remote control and joystick to control the car Specifications Processor ESP32-Wrover-B (8 MB) Programming Letscode, Arduino, Micropython Control method Bluetooth Remote Control/Infrared Remote Control Input Button, Light sensor, Infrared Receiving Module, Ultrasonic Sensor, Line Tracking Sensor Output Buzzer, Programmable RGB Light, Motor Wifi & Bluetooth Yes Light sensor Can realize the function of chasing light or avoiding light Ultrasonic Sensor When an obstacle is detected, the driving route of the car can be corrected to avoid the obstacle Line Tracking Sensor Can make the car move along the dark/black lines, intelligently judge and correct the driving path Buzzer Can make the car sound/whistle, bringing a more direct sensory experience Programmable RGB Light Through programming, it can show colorful lights in different scenes Infrared receiver Receive infrared remote control signals to realize remote control Interfaces 1x USB-C, 1x I²C, 1x A/D Motor type GA12-N20 Micro DC Gear Motor Operating temperature -10℃~+55℃ Power supply 4x 1.5 V batteries (not included) Battery life 1.5 hours Dimensions 128 x 92 x 64 mm Weight 900 g Included 1x Chassis 1x Ultrasonic Sensor 1x Battery Holder 2x Wheels 4x M3x8 mm Screws 2x M3x5 mm Copper Column 2x Side Acrylic Plates 1x Front Acrylic Plates 1x Screwdriver 2x 4 Pin Crowtail Cable 1x USB-C Cable 1x Infrared remote control 1x Instructions & Line Track Map 1x Joystick Downloads Wiki CrowBot-BOLT_Assembly-Instruction Joystick-for-CrowBot-BOLT_Assembly-Instruction CrowBot_BOLT_Beginner’s_Guide Designing Documents of CrowBot Designing Documents of Joystick Lesson Code 3D Model Factory Source Code

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This Crowtail series 4G module is a high-performance LTE Cat1 wireless module. It uses the SIM A7670E communication module from Simcom and communicates through a UART interface, which enables 4G data transmission and voice communication. The module supports multiple LTE bands, including B1/B3/B5/B7/B8/B20, as well as WCDMA and GSM networks. In addition, it supports various protocols such as TCP/IP, FTP, HTTP, and multiple satellite navigation systems such as GPS, GLONASS, and BDS. The module comes with a charging interface and can be powered by a 3.7 V lithium battery or a 5 V USB-C interface. It also has a 3.5 mm headphone jack, and by connecting a headphone with a microphone, it can be used for making and receiving phone calls. Its compact size makes it easy to integrate into various IoT devices and meet various application requirements. Furthermore, its low power consumption and reliable performance are also the reasons why it is widely used in IoT, smart home, automotive, and industrial control fields. Features Integrate the A7670E communication module, enabling 4G data transmission and voice communication with low power consumption and high reliability Supports multiple LTE bands, including B1/B3/B5/B7/B8/B20, as well as WCDMA and GSM networks Supports various protocols such as TCP/IP, FTP, HTTP, and multiple satellite navigation systems such as GPS, GLONASS, and BDS Comes with a charging interface and a headphone jack, which can be used for making and receiving phone calls by connecting a headphone with a microphone Small but powerful, compact size makes it easy to integrate into various IoT devices. Specifications Main Chip: SIM A7670E LTE-FDD: B1/B3/B5/B7/B8/B20 GSM: 900/1800 MHz GSM/GPRS power class EGSM900: 4 (33 dBm ±2 dB) DCS1800: 1 (30 dBm ±2 dB) EDGE power class: EGSM900: E2 (27 dBm ±3 dB) DCS1800 : E1 (26 dBm +3 dB/-4 dB) LTE power class: 3 (23 dBm ±7 dB) Supply Voltage: 4 V ~ 4.2 V Power: 3.8 V LTE(Mbps): 10 (DL)/5 (UL) GPRS/EDGE(Kbps): 236.8 (DL)/236.8 (UL) Protocol: TCP/IP/IPV4/IPV6/Multi-PDP/FTP/FTPS /HTTP/HTTPS/DNS Communication interface: USB / UART Firmware Upgrade: USB/FOTA Support phonebook types: SM/FD/ON/AP/SDN Interfaces: 1x Power button, 1x BAT, 1x UART, 1x USB-C, 1x SIM Card slot Dimensions: 35 x 50 mm Included 1x Crowtail-4G SIM-A7670E 1x 4G GSM NB-IoT Antenna 1x GPS ceramic antenna Downloads Wiki A7670 AT Command Manual A7670 Datasheet Source Code

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This 10.1-inch HDMI touch screen has a high-definition resolution of 1280x800 and supports a viewing angle of 178°, providing an excellent visual experience. It supports Raspberry Pi, Windows, Linux, Ubuntu and other systems, and is also compatible with Raspberry Pi 3/3B+/4B/5, Jetson Nano, Beaglebone, Banana Pi and other mainstream development boards. You can easily adjust the desired brightness by adjusting the backlight button. This Raspberry Pi capacitive touch screen supports 5-point touch, has fast response speed, and high-definition communication supports plug-and-play.It comes with a stand for easy desktop placement, and mounting holes on the back allow you to securely mount it on a wall or integrate it with a small form factor SBC (single board computer). To protect the screen and enhance its visual appeal, the monitor comes with a durable and stylish acrylic cover. Whether you need a high-quality monitor for gaming, multimedia entertainment, or industrial applications, our 10-inch monitors offer superior visuals, responsive touch controls, seamless connectivity, and versatile mounting options. Features IPS HD 1280x800 resolution and 178° full viewing angle offers crystal clear visuals and vivid colors for high-quality visual experience Support backlight control, itcan be adjusted by button Support capacitive 5-point touch, enable smooth, accurate and fast response Use HD communication, plug and play, and easy to use Support Windows, Linux, Ubuntu, Kodi, etc. Compatible with Raspberry Pi 3/3B+/4B/5, Jetson Nano, Beaglebone Specifications Screen Size 10.1 inch Screen Type IPS screen Resolution 1280 x 800 Backlight adjustment Key switch adjustment Touch Screen Type Capacitive Touch Screen Touch IC SIS9200 Power Micro-USB (5 V) Overall power 5.2942 W (100% brightness) Video Input Interface HDMI-Compatible (up to 1080p) Active Area 216.6 x 135.4 mm Dimensions (L x W x H) 239.4 x 157.4 x 12.3 ±0.2 mm Included 1x 10.1 inch Touch Display 1x HD to HD Cable 2x USB cable 1x HD to Mini HD Adapter 1x Screw Pack 2x Bracket 1x Screwdriver 1x Manual Downloads Manual Wiki

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15 Sensor Modules & 21 Tutorials The Elecrow All-in-One Starter Kit for Arduino is the perfect choice for beginners looking to explore the world of Arduino in a fun and accessible way. The kit includes more than 20 interactive tutorials, ranging from easy to advanced. These step-by-step guides help you master sensor usage, develop logical thinking skills, and spark your creativity. The kit contains 15 sensors in total: 14 built-in sensors and 1 humidity sensor with a Crowtail interface. Each sensor offers unique features and functions, making them ideal for Arduino novices. Additionally, the kit includes 6 Crowtail interfaces, enabling compatibility with over 150 types of Crowtail sensors and offering excellent expandability. These features make it a great entry-level tool for fostering logical thinking and innovation. Unlike most starter kits, this all-in-one kit uses a unified board design — no breadboard, no soldering, and no wiring required. This allows you to focus entirely on programming and learning Arduino. Features 15 sensors with different functions, 21 creative tutorials Common board design for sensors, no need to solder wires, direct use Portable suitcase (small and exquisite) Reserved 6 Crowtail interfaces (3x I/O, 2x I²C, 1x UART) Visualized silk screen printing, corresponding to the characteristics of each sensor Specifications All-in-one Starter Kit for Raspberry Pi Pico 2 All-in-one Starter Kit for Arduino Main Processor Raspberry Pi Pico 2 RP2350 ATmega328P Number of Sensors 17 sensors 15 sensors (including 1 Humidity sensor) Sensor Board Design Integrated sensor board, no soldering or complex wiring required Display 2.4-inch TFT full-color touch screen N/A Ambient Lights 20 full-color ambient lights, switchable via touch screen N/A Built-in Mini Games Yes No Expansion Interfaces N/A 6 Crowtail interfaces(3x I/O, 2x I²C, 1x UART) Programming Environment Based on Arduino software Number of Tutorials 21 creative tutorials Interface USB-C Dimensions 195 x 170 x 46 mm Weight 380 g 340 g Included 1x Elecrow All-in-One Starter Kit for Arduino 1x Moisture Sensor with Cable 1x IR Remote Control 1x USB-C Cable Downloads Datasheet Manual Wiki

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17 Sensor Modules & 21 Tutorials The Elecrow All-in-One Starter Kit for Raspberry Pi Pico 2 is an ideal choice for beginners embarking on their learning journey with the RP2040-based Pico 2. This comprehensive kit integrates 17 different sensors onto a single board and features a 2.4-inch full-color TFT touch screen. No soldering or wiring is required – it's ready to use right out of the box, enabling a quick and seamless start. The kit includes more than 20 creative tutorials, ranging from basic to advanced levels. These step-by-step guides help users gradually become familiar with various sensors, develop logical thinking skills, and spark creativity. Its compact, portable suitcase design makes it easy to carry and perfect for learning on the go. To enhance the learning experience, the kit also features 20 programmable full-color ambient lights and built-in mini-games, allowing for an engaging blend of education and entertainment. Features Powered by Raspberry Pi Pico 2 (RP2350 chip) Includes 17 integrated sensors with various functions, along with over 20 creative tutorials All-in-one sensor board design – no soldering required, ready to use out of the box, perfect for quick prototyping Compact and stylish portable suitcase – small, elegant, and easy to carry 2.4-inch full-color TFT touchscreen 20 programmable full-color ambient lights for dynamic visual effects Built-in mini-games – play instantly after boot-up, enabling a smooth transition between learning and fun Sensores 1x Temperature & Humidity Sensor 4x Buttons 1x Ultrasonic Ranging Sensor 1x Light Sensor 1x Linear Potentiometer 3x LEDs 1x Buzzer 1x 2.4-inch TFT Display 1x Infrared Remote 1x Relay 1x Servo motor 1x Sound Sensor 1x Accelerometer & Gyro 1x Touch Sensor 1x Vibration Motor 1x Hall Sensor 1x Gas Sensor (MQ2) Specifications All-in-one Starter Kit for Raspberry Pi Pico 2 All-in-one Starter Kit for Arduino Main Processor Raspberry Pi Pico 2 RP2350 ATmega328P Number of Sensors 17 sensors 15 sensors (including 1 Humidity sensor) Sensor Board Design Integrated sensor board, no soldering or complex wiring required Display 2.4-inch TFT full-color touch screen N/A Ambient Lights 20 full-color ambient lights, switchable via touch screen N/A Built-in Mini Games Yes No Expansion Interfaces N/A 6 Crowtail interfaces(3x I/O, 2x I²C, 1x UART) Programming Environment Based on Arduino software Number of Tutorials 21 creative tutorials Interface USB-C Dimensions 195 x 170 x 46 mm Weight 380 g 340 g Included 1x Elecrow All-in-One Starter Kit for Raspberry Pi Pico 2 1x IR Remote control 1x USB-C cable Downloads Datasheet Manual Wiki

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This ESP32 terminal is a microcontroller based on the ESP32 master. It adopts Xtensa 32-bit LX7 dual-core processor with a main frequency of up to 240 Mhz, supports 2.4 GHz Wi-Fi and Bluetooth 5 (LE), and can easily handle common edge terminal device application scenarios, such as industrial control, agricultural production environment detection and processing, intelligent logistics monitoring, smart home scenarios and more. The ESP32 module also has a 3.5-inch parallel RGB interface capacitive touch screen with a resolution of 320x480 to ensure perfect image output at a frame rate 60 FPS. The 4 Crowtail interfaces on the back of this terminal can be used with Crowtail series sensors, plug and play, and create more interesting projects quickly and conveniently. In addition, it is also equipped with an SD card slot for extended storage (SPI leads) and a buzzer function. The ESP32 touchscreen supports ESP-IDF and Arduino IDE development and is compatible with Python/MicroPython/Arduino. It also supports LVGL, which is the most popular free and open-source embedded graphics library to create beautiful UIs for any MCU, MPU, and display type. Now it has also obtained the official certification of LVGL. LVGL's board certificate shows that the boards can be easily used with LVGL and has decent performance for UI applications. The onboard charging circuit and lithium battery interface can use the type-C power supply interface to supply power and charge the battery at the same time, providing more outdoor scene expansion possibilities. Features Integrated ESP32-S3 module, which is support 2.4 GHz Wi-Fi and Bluetooth 5 (LE) LCD 3.5 inches parallel TFT-LCD with 320x480 resolution Compatible with Arduino/Python/MicrmoPython Mature software support, support ESP-IDF and Arduino IDE development Support open-source Graphics Library-LVGL Support 1T1R mode, data rate up to 150 Mbps, Wireless Multimedia (WMM) Perfect security mechanism, support AES-128/256, Hash, RSA, HMAC, digital signatures and secure boot Onboard charging chip and interface, use type-C interface to charge With 4 Crowtail interfaces (HY2.0-4P connector), plug and play with various Crowtail sensor Applications Smart Home Industrial Control Medical Monitor Home Appliance Display Logistics Monitoring Specifications ESP32-S3 module with 16 MB Flash and 8 MB PSRAM Wi-Fi Protocol: 802.11b/g/n (802.11n up to 150 Mbps) Wi-Fi Frequency Range: 2.402-2.483 Ghz Support Bluetooth 5 With 4 Crowtail interfaces (HY2.0-4P connector) and onboard Micro TF card slot 3.5-inch TFT LCD RGB true color LCD screen with 320x480 resolution Driver chip: ILI9488 (16-bit parallel line) Capacitive touch panel controller IC FT6236 series Operating Voltage: DC 5 V-500 mA Sleep current: USB power supply: 6.86 mA Lithium battery power supply: 3.23 mA LiPo Battery Interface: PH2.0 Operating temperature: -10°C ~ 65°C Active Area: 73.63 x 49.79 mm (L x W) Dimensions: 106 x 66 x 13 mm (L x W x H) Included 1x 3.5-inch ESP RGB Display with Acrylic Shell 1x USB-C Cable Downloads Wiki Schematic Diagram 16 learning Lessons for LVGL Source code Lesson code LVGL Reference ESP32-S3 Datasheet ILI9488 Datasheet Capacitive Touch Display Data

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This LR1302 module is a new generation LoRaWAN gateway module. It adopts a mini-PCIe form factor design and features low power consumption and high performance. Based on Semtech Network's SX1302 LoRaWA baseband chip, the LR1302 gateway module provides gateway products with potential capacity for long-distance wireless transmission. Compared to the previous SX1301 and SX1308 LoRa chips, the SX1302 chip has higher sensitivity, lower power consumption and lower operating temperature. It supports 8-channel data transmission, improves communication efficiency and capacity, and supports the connection and data transmission of more devices. It reserves two antenna interfaces, one for transmitting and receiving LoRa signals and one U.FL (IPEX) interface for independent transmission. It also has a metal shield to protect against external interference and provide a reliable communications environment. Designed specifically for the IoT space, the LR1302 is suitable for a variety of IoT applications. Whether used in smart cities, agriculture, industrial automation or other fields, the LR1302 module can provide reliable connections and efficient data transmission. Features Uses Semtech SX1302 baseband LoRa chip with extremely low power consumptionand excellent performance Mini-PCIe form factor and compact design make it easier to integrate into various gateway devices, suitable for space-constrained application scenarios, and provide flexible deployment options Support 8-channeldata transmission, provide more efficient communication efficiency and capacity Ultra-low operating temperatureeliminates the need for additional cooling and reduces the size of the LoRaWAN gateway Uses SX1250 TX/RX front end with sensitivity down to -139 dBm@SF12; TX power up to 26 dBm @3.3 V Specifications Frequency 863-870 MHz (EU868) Chipset Semtech SX1302 Chip Sensitivity -125 dBm @125K/SF7-139 dBm @125K/SF12 TX Power 26 dBm (with 3.3 V power supply) Bandwidth 125/250/500 kHz Channel 8 channel LEDs Power: GreenConfig: RedTX: GreenRX: Blue Form Factor Mini PCIe, 52-pin Golden Finger Power Consumption (SPI version) Standby: 7.5 mATX maximum power: 415 mARX: 40 mA Power Consumption (USB version) Standby: 20 mATX maximum power: 425 mARX: 53 mA LBT(Listen Before Talk) Support Antenna Connector U.FL Operating Temperature -40 to 85°C Dimensions (W x L) 30 x 50.95 mm Note LR1302 LoRaWAN HAT for Raspberry Pi is not included. Downloads Wiki SX1302 Datasheet Schematic Diagram

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Lora technology and Lora devices have been widely used in the field of the Internet of Things (IoT), and more and more people are joining and learning Lora development, making it an indispensable part of the IoT world. To help beginners learn and develop Lora technology better, a Lora development board has been designed specifically for beginners, which uses RP2040 as the main control and is equipped with the RA-08H module that supports Lora and LoRaWAN protocols to help users realize development. RP2040 is a dual-core, high-performance, and low-power ARM Cortex-M0+ architecture chip, suitable for IoT, robots, control, embedded systems, and other application fields. RA-08H is made from the Semtech-authorized ASR6601 RF chip, which supports the 868 MHz frequency band, has a 32 MHz MCU built-in, which has more powerful functions than ordinary RF modules, and also supports AT command control. This board retains various functional interfaces for development, such as the Crowtail interface, the common PIN to PIN header that leads out GPIO ports, and provides 3.3 V and 5 V outputs, suitable for the development and use of commonly used sensors and electronic modules on the market. In addition, the board also reserves RS485 interface, SPI, I²C, and UART interfaces, which can be compatible with more sensors/modules. In addition to the basic development interfaces, the board also integrates some commonly used functions, such as a buzzer, a custom button, red-yellow-green three-color indicator lights, and a 1.8-inch SPI interface LCD screen with a resolution of 128x160. Features Uses RP2040 as the main controller, with two 32-bit ARM Cortex M0+ processor cores (dual-core), and provides more powerful performance Integrates the RA-08H module with 32 MHz MCU, supports the 868 MHz frequency band and AT command control Abundant external interface resources, compatible with Crowtail series modules and other common interface modules on the market Integrates commonly used functions like buzzer, LED light, LCD display and custom button, making it more concise and convenient when creating projects Onboard 1.8-inch 128x160 SPI-TFT-LCD, ST7735S driver chip Compatible with Arduino/Micropython, easy to carry out different projects Specifications Main Chip Raspberry Pi RP2040, built-in 264 KB SRAM, onboard 4 MB Flash Processor Dual Core Arm Cortex-M0+ @ 133 MHz RA-08H Frequency band 803-930 MHz RA-08H Interface External antenna, SMA interface or IPEX first-generation interface LCD Display Onboard 1.8-inch 128x160SPI-TFT-LCD LCD Resolution 128x160 LCD Driver ST7735S (4-wire SPI) Development environment Arduino/MicroPython Interfaces 1x passive buzzer 4x user-defined buttons 6x programmable LEDs 1x RS485 communication interface 8x 5 V Crowtail interfaces (2x analog interfaces, 2x digital interfaces, 2x UART, 2x I²C) 12x 5 V universal pin header IO 14x 3.3 V universal pin header IO 1x 3.3 V/5 V switchable SPI 1x 3.3 V/5 V switchable UART 3x 3.3 V/5 V switchable I²C Working input voltage USB 5 V/1 A Operating temperature -10°C ~ 65°C Dimensions 102 x 76.5 mm (L x W) Included 1x Lora RA-08H Development Board 1x Lora Spring Antenna (868 MHz) 1x Lora Rubber Antenna (868 Mhz) Downloads Wiki

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This mini IPS 7-inch HD monitor supports a resolution of 1024x600. IPS monitors help keep colors consistent at a wide viewing angle. The 2 removable speakers enhance your audio-visual experiences. Features Four corner holes let you mount the small monitor onto your DIY IoT projects that you’re working on. This Raspberry Pi display also comes with 2 stands, is easy to install and remove, great for on-the-go use. With a capacitive USB touchscreen, simply power the USB touch port to achieve touch function and no need to install the driver, just plug and play! Signal via HDMI-compatible port, power&touch via micro USB port, drive free. No cable solution to Raspberry Pi 4, just using 2 simple adapters to connect your Raspberry Pi 4 directly. You can use it with your Raspberry Pi 4/3/2, Laptop, TV, video game console like Nintendo Switch/Xbox/PS4, and security camera. 170-degree wide view angle 5-point capacitive HD touch display Specifications Display size 7 inch (154 x 86 mm) Resolution 1024 x 600 Display type IPS Touch Capacitive Touchscreen Frame rate 60 fps Brightness 260 cd/m² Speaker Support Interface HD & USB Working temperature −20 to +60°C Dimensions 164 x 99 mm Weight 235 g Included 1x 7-inch Monitor 1x USB to Micro USB Connector 1x HD to Micro HD Connector 1x USB to Micro USB Cable 1x HD to HD Cable 4x M2.5 Screws 4x Small Copper Pillars 2x Pro Stand 2x M3 Screws 2x Speakers 1x User Manual Downloads User Manual

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