IoT FPGA edge acceleration image transmission remote lurking car

Core board + function board design supports expansion and is more flexible. In addition to FPGA+esp32, the core board also has onboard power management, RTC and storage functions, and can operate independently to a large extent. The Bluetooth WiFi function of esp32, coupled with the processing power of FPGA, provides extremely high flexibility. Almost all functions can be reconfigured online, so that the car can be upgraded and operated remotely. Combined with online surveillance cameras, it has low standby power consumption. Designed to allow long-term remote operation, it is a latent smart car.

The Web-based REST style remote control interface is easy to implement the remote control interface, and mobile phones/computers can control it freely.

All parts, except the two bearings (to reduce front wheel friction) and the metal rod (rear wheel load-bearing), are all printed using light-curing 3D printing with optimized designs, saving printing time and materials. All parts STL output has been open sourced.

The steering gear realizes front-wheel steering, and two DC motors are used for rear drive. The functional version has integrated charge and discharge management. The small size can just cover a 112x84 solar panel, so you don’t have to worry about running out of power.

function points

Core board

• FPGA
• WiFi/Bluetooth
• RTC clock
• Low power support
• SDCard
• Large capacity RAM

Function board

• Lithium battery charge and discharge management
• Maximum drive of four DC motors
• Maximum drive for two-way stepper motors
• Maximum four-way steering gear
• Two-way DC switch
• Camera support
• RGB indicator light

All parts

To support stereolithography printing, all parts are flat. In order to offset the increase in volume caused by overexposure of the underlying layer, chamfers were added to the bottom surface of the part. Optimized design greatly shortens printing time and saves materials.

In addition to the light-cured parts, you also need a steering gear, two DC motors, two small bearings, and two 35mm long metal shafts.

Start assembling

Assembly instructions

Solder wires to the motor, cover with solar panel, a flatAnd uglyThe car is ready.

remote control

Thanks to the network function of esp32, both video images and remote control signals can be transmitted through WiFi. For maximum flexibility, the car functions are mapped to a REST-style http interface, making it easy to implement remote control functions on various platforms. We have implemented a web-based remote control interface, so that no matter whether it is a mobile phone or a computer, you can remotely control the car.

Desktop remote control interface, the car is exploring unknown ruins.

Use mobile phone remote control

Functional interface

Conclusion

I will never step on the dead line again