preface

A little Zhengtai at home is eager for knowledge. As his father, he has been looking for enlightenment education products that are fun and can be programmed, that is, the so-called "education through fun". Many toys on the market, such as remote-controlled cars and aircraft, can be controlled by turning on the power supply through a handle, which is neither playable nor meets the requirements of using eyes, hands and brains (wandering). Coincidentally, I got a chance to try out a small truck machine car XKBOT2 in the machine trial. Thank you very much@ Love to play computer games As for the trial products jointly provided by Changsha Small Truck Robot Technology Co., Ltd., as for whether the small truck robot XKBOT2 can meet my requirements, let me take my time.

Unpacking

The packaging box of the small truck XKBOT2 is mainly yellow, which looks very eye-catching and eye-catching.

The front of the packing box is printed with a character with legs spraying flame and wearing spacesuit, which has a sense of technology. There is also the name of the product on the front: small card robot (pay attention to the color of the side of the two characters of the small card, and the word "machine car" does not appear in the entire packaging box and instructions, I use the word "car" to feel more intuitive). The "make programming more interesting" under the product name should be the Slogan of small card robot.

Of course, you can see the blue stickers of the iG7 deformed logo for computer trial.

On the back of the packing box, there is only a logo transformed from "Ka", which is also its registered trademark and is very simple.

The other four sides of a cuboid also provide information about the website, WeChat official account and two microcode, so it is simply displayed with a moving picture.

Uncover the cover of the packing box, and the instruction manual of the small truck truck XKBOT2 and the line patrol "8" figure are shown on the top. After removing the instruction manual and the pearl cotton foam board, you can see the parts of the machine car that are also wrapped in the pearl cotton foam. Under the protection of pearl cotton foam, they lay there safely, waiting for the master's favor quietly.

Family photo. The list of parts and the names of each part are clearly marked in the manual, so we will not elaborate here.

It should be emphasized that the XKBOT2 main control board of the small truck is made of lead-free black gold. Lead free is more environmentally safe and more friendly to children's health. As for the difference between the gilt plate and the gilt plate, it is easy to use but not expensive. If interested children's shoes need deeper and more professional knowledge, Baidu can understand it.

assemble

The small truck truck XKBOT2 is designed for welding free installation. With the attached tools and following the detailed steps in the manual, the whole truck can be installed in 10 minutes. Children over 6 years old can also assemble independently. The assembly process is relatively simple, so this article will not elaborate. Here are some pictures.

The little guy is carefully assembling

Assembly process from bottom to top and from inside to outside.

Head display of finished products. Seeing this smiling face makes people happy all day.

Finished product tail display. The "Ka" logo hollowed out on the anodized aluminum alloy frame is the same as the smiling face in the above figure, full of design, and I like it.

Side display of finished products. The wheels have great visual impact.

During the assembly process, special attention should be paid to that although the interface between the 4P connecting line, motor line, power line and the main control board is designed to prevent reverse insertion, the design of anti reverse insertion is not obvious because the parts are relatively small, which is easy to be reversed. If it is inserted reversely, it may lead to serious consequences of burning the main control board.

After the XKBOT2 is assembled, the 2000mAH, 18650 lithium battery is charged for the first time, and the charging indicator light changes from red to green, which takes a total of three hours. The manual shows that the battery can work continuously for 8-16 hours after being fully charged. When the energy is full, let's experience it.

experience

There are three functional modes for assembling the small truck machine car XKBOT2, and the experience mainly revolves around these three modes. The three function modes can be switched through the mode selection toggle switch on the main control board. When the switch is turned to the left, line patrol is performed, obstacle avoidance is performed in the middle, and Bluetooth is performed on the right.

1. Line patrol mode: The robot car will be identified by the line patrol sensor and walk along the preset black line with white background.

XKBOT2 needs a "clear black and white" route instruction for line patrol. From the video, we can see that the "8" figure provided by the XKBOT2 line patrol robot and the ellipse printed on A3 paper by individuals are perfect. In case of insufficient turning radius during the elliptical line patrol, the robot will reposition the line patrol itself. At the same time, it seems that the robot car will not stop by itself during line patrol, but only manually grab and turn off the power. Because the robot car is still in motion, on the one hand, it is not easy to catch, on the other hand, it is easy to break the exposed small cables.

2. Obstacle avoidance mode: The robot car will detect the distance from the obstacle through the ultrasonic sensor, so as to avoid the obstacle by itself.

The obstacle avoidance function of XKBOT2 is also perfect, and the video is certified, so I will not repeat it.

3. Bluetooth profile: The small card robot app can be installed through Android or IOS smart devices to pair and control the XKBOT2. Please refer to the XKBOT2 manual for Bluetooth connection steps.

3.1 Introduction to small card robot app: We can scan the QR code on the cover of the manual by mobile phone or tablet computer or log on to www.xkbot.com, and select the corresponding system.

After the Android app I downloaded is installed, the phone will display the icon as shown in the left figure, click to open, and a short transition screen as shown in the middle figure will appear, then stay in the interface as shown in the right figure. You can log in after registering.

After logging in, you will enter the tab of "Home" by default (as shown in the left figure, there are four icons, namely, sports mode, programming mode, rocking and extreme fast car. In addition, "I will choose" will appear after clicking download and installation on the tab of "Discovery", as shown in the middle figure); The right figure shows the "My" tab, including password modification, firmware update, etc. Now let's focus on the XKBOT2 control involved in the home page icons.

3.2 Sport mode of Bluetooth mode:

Click the icon of the motion mode, and the control button shown in the above figure will appear. The yellow area is equivalent to a handle: pushing up is forward, pulling down is backward, pulling left is left, pulling right is right, and other directions are combinations of corresponding functions. The plus and minus signs in the green area seem to control the speed of the robot car (it is felt that the speed is controlled during operation, and whether it is or not needs to be verified).

3.3 Programming mode of Bluetooth mode:

Click the icon of programming mode, and the interface shown above will appear. On the left is the relevant command group. Click the name of the corresponding group, and the corresponding graphical programming command will appear. If you click "Start" or "Movement", the interface shown in the small middle and lower figure above will appear. Drag the corresponding graphical programming command to the blank area in the middle of the screen (I call it the editing area) to complete the programming of a command statement. By analogy, a complete program can be created. Through the combination of long and short graphical programming commands, thousands of programs can be created for the XKBOT2 robot to execute.

A program usually starts with the "Start" command. The above figure is a simple program. The contents in the inverted box in the program can be edited. Click OK to confirm after editing, as shown in the above figure. If you want to delete a command and its subsequent commands during program writing, you can select the command in the editing area, and then click the trash can icon in the lower right corner to complete the deletion; If all commands in the editing area are unnecessary, click Reset in the lower right corner to delete all commands. After the program is created, you can click Save in the lower left corner to save the program for future calls.

After the program is created, you can click the Start button at the bottom left corner to execute. At this time, the XKBOT2 robot car will execute the command, and the mobile phone will also display the interface below the figure above: "Executing code (1/53)". The following video is a demonstration of the program shown above.

3.4 Flutter of Bluetooth mode:

A shake, as the name suggests, is to shake the mobile phone, trigger the corresponding commands in the app through the mobile phone's gravity sensor, and make the XKBOT2 robot car execute the corresponding commands. As can be seen from the video, if you shake your mobile phone, the XKBOT2 robot car will draw a circle to the left (draw a circle to curse you, hehe).

3.5 The best of Bluetooth mode:

I personally think that the mobile phone gravity sensor is used to control the XKBOT2 robot car more accurately. It can be seen from the video: tilt the mobile phone forward, and the XKBOT2 robot car moves forward; Tilt back the mobile phone, and the XKBOT2 robot car will move backward; Tilt the mobile phone to the left, and the robot car turns to the left; Tilt the mobile phone to the right, and the XKBOT2 robot car turns to the right.

3.6 My choice of Bluetooth mode:

I will choose ("I will choose" appears on the home page after clicking download and installation on the "Discovery" tab), which seems to be the advanced programming function developed by Small Card Robot Technology Co., Ltd. for its humanoid robot. Since there is no humanoid robot, this article will be omitted. Small partners in need can purchase and explore.

summary

advantage:

1. The control panel of the XKBOT2 machine owner is exposed, covered with transparent acrylic cover plate, which plays a protective role. This intuitive presentation without a shell, combined with various lighting effects, has a strong sense of science and technology, science fiction, as if from the future, and can greatly cultivate children's spirit of exploring the future and the unknown.

2. Graphical programming mode, for children, reduces the threshold of programming and is easy to operate. By moving several graphical commands on the phone, The XKBOT2 robot car will run various actions to respond and feedback, which can greatly stimulate children's programming interest and feel the magic brought by technology. To a certain extent, it plays the role of programming enlightenment education, Learn from play, learn from play 。

3. All kinds of function modes or their combinations can generate thousands of non repetitive program commands, which can be intuitively displayed through the XKBOT2 robot car. The playability is greatly increased, and people will not feel "bored".

It can be seen that the XKBOT2 robot car meets my requirements of "fun" and "smart". And good products are not expensive. The official Taobao store sells only 299 yuan after a discount of 100 yuan, which is one of the best choices for children to carry out programming enlightenment education at present.

Suggestions for improvement:

In the line patrol and obstacle avoidance modes, when the power switch is turned to "ON", The XKBOT2 robot car will keep moving. It can only stop when the XKBOT2 robot car is grasped by hand and the switch is manually toggled to "OFF". It is recommended that the robot car can also be connected to the mobile phone through Bluetooth in the line patrol and obstacle avoidance modes, and the "Stop STOP" button is set in the app, so that we can stop the XKBOT2 robot car when we need it, However, when it is in motion, we will use our hands to grasp it, which will lead to the consequences that we do not know where to start or pull off the thin cables on the machine car in a hurry and damage the machine car.

Write at the back

The first XKBOT2 machine car on trial was burned out after a burst of light smoke because the factory workers connected the positive and negative pole wires of the power supply reversely during welding. I then communicated with the staff of @ Enjoying Machine Trial, and @ Enjoying Machine Trial soon fed back the relevant information to @ Small Card Robot Official Blog. After I provided relevant evidence, @ Small Card Robot Official Blog timely replaced it. Although I paid a SF express fee once, I praised both the earnest and responsible attitude and work efficiency of @ machine trial and @ small card robot official blog. It is difficult for small card robot to be not popular with people who do such things. Due to the back and forth mail, it has a certain impact on my trial progress, so I apologize.

In view of this, I think it is necessary for manufacturers to draw inferences from one instance to reduce unnecessary benefit losses. It is recommended that the manufacturer clearly mark the places involving the positive and negative pole wiring during production, such as the power "socket" of the main control board, the "plug" of the pole line, and the battery compartment, not only by the color of the pole line. In this way, factory workers will also reduce the possibility of misoperation, and also remind consumers to pay attention to reducing losses by killing two birds with one stone.

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