Tencent Digital (Yi Jing) Why Livera? There is only one purpose: if someone wants to build a robot himself, installing Livera can add machine vision to the robot, which is not costly.
Livera, developed by the HiCat team, is an open source hardware project that hopes to provide machine vision technology to the Arduino community. The team created a library of functions that includes some APIs related to machine vision, covering the following areas:
- 720hd video and picture capture processing.
- OpenCV color perception, target tracking.
- Support Wifi, you can use wireless control.
- Store captured images and data on the built-in SD card.
- Mobile observations and operations can be performed by customizing the APP.
- Programmable, open source.
In simple terms, Livera is a set of robotic developer kits that are suitable for novice robotics and experienced people. Livera is a collection of Wifi routers, webcams, accelerometers, Arduino, and Raspberry Pi. It's about the same size as small cardboard.
Let's take a look at the specific hardware configuration of Livera:
Visual Processor: hi3518
Storage: 16M Flash and SD Cards
Microprogram Controller: Atmel 32u4
WIFI: MT7601
Camera sensor: OV9712
Visual angle: 140 degrees
Extension cord: 12 cm long
Motor Driver: Iv8548 H-bridge; 5V micro USB interface, input voltage 5-12V; 4 DC outputs and 4 servomotors can be connected.
Others: mpu6050 accelerometer and gyroscope
Next, introduce some of Livera's major components:
1, the motor driver
With a motor driver, you can easily drive 4 DC motors and 4 servo motors. These motors are powered by USB and can also be powered by an internal battery pack.
2, Extensible camera module
Livera's camera module is a stand-alone module that can be used directly on the motherboard or with extension cords.
3, easily set up a robotic tool kit
Through assembly and programming, you can have a certain understanding of the following technologies:
——Robot mechanical transmission mechanism and dynamics.
- Programming the motor according to the dynamic environment.
- Robot vision for tracking targets and identifying colors.
4, capture the image
Livera is a great platform for capturing images and processing images.
Let's look at two demonstrations again:
This is an image capture, openCV line tracking APP, which is written in C language. The program can continuously obtain images through Livera, then use the openCV API to detect black lines, and mark the captured images. The image continues through the web interface. Update.
Then there is puppy automatic feeder. First, we have to set up a daily feeding plan. When the dog comes, Livera will automatically perceive through the visual motion detection function, then record the video, store it on the SD card, and then send it to the owner in the form of streaming media (such as mail, direct broadcast) from the Internet.
The starting price of the Livera kit is only 59 dollars and the highest version is 198 dollars. If you buy through Kickstarter, as low as 49 US dollars, I believe developers will be interested.
Source: kickstarter
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