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WHDTS D2-5 Smart Car Soldering Project Kits Line Following Robot for Kids DIY Electronics Education School Competition
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Specifications for this item
|Is Assembly Required?||true|
|Specific Uses For Product||electronic knowledge learning, school edcuation|
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CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
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|Item Dimensions||—||4.5 x 3.4 x 0.4 in||6.5 x 2.17 x 8.66 in||8.25 x 6.25 x 3.75 in||6.75 x 3.25 x 5.25 in||3.3 x 3.3 x 3.3 in|
|Item Weight||2.47 ounces||2.47 ounces||—||0.95 lb||0.72 lb||—|
Download the material from drive.google.com/open?id=1kLlV2NlXQeXo56ItreQ1JlUParTRc-16 or just scan QR code on the 7th picture.
1.1 Install metal film resistor,DIP-8P IC socket,Self-Locking switch,Potentiometer,S8550, Capacitor, Red LED on PCB according to mark on PCB
1.2 Install Mecanum wheel
The support bolts of the caster are inserted into the hole, tighten the nuts screwed into the caster, and finally fit the caster and tighten.
1.3 Install photoresistor and white LED on PCB reverse
1.4 Install battery case
Install 2pcs AA battery
Press on switch.If 2pcs white LED ON,the installation is successful.If LED off,please check the welding.
2>.Install mechanical parts
2.1 Install the four gaskets on the circuit board
2.2 Insert a steel shaft from the center hole of the wheel and note that the direction is inserted from one side of the raised sleeve of the wheel. It is better to insert the steel shaft parallel to the smooth side of the wheel
2.3 Put a three-way sleeve into the steel shaft, close to the wheel, and then a gasket into the steel shaft, close to the three-way sleeve, installed in place, toggle three-way sleeve, should be flexible.
2.4 Place a gear into the steel shaft in the center of the steel shaft
2.5 Put a three-axis sleeve into the end of the steel shaft so that the car side of the wheel assembly to complete
2.6 Install Motor
3.1 Power on.Check S8550 or 10ohm resistor if motor don’t move
3.2 Install LM393
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I would say that you should supervise an inexperienced kid under the age of 12 (at the absolute earliest!) with this kit, since precision soldering is required. You may just want to assemble this one for them and have them observe. I haven't fully assembled my kit yet, but I've gone over it thoroughly.
This uses a very simple logic system to guide the robot based on infrared signaling. The kit includes a rudimentary "track" for the robot to follow once assembled, and uses dual drive. The robot will have a zero degree turn radius due to this design. I'm sure with a little tweaking, this can follow a complicated track using just the simple logic tree on the included IC.
One draw back, the included instructions are entirely in Chinese.
A big plus in my book was a socket to put the IC chip into. Many cheap kits would have you solder the IC chip directly into the PCB.
The socket for the DIP was a nice touch so I didn’t worry about overheating the chip. I used a multimeter to check the resistors and they are all spot on. I had exactly the right number of parts (no extra)
The battery box is a little tight, but it works.
I’m still playing with the potentiometers but it seems they are really only used to set and initial bias on the robot. It wants to turn one way or the other. Maybe I’m not doing it precisely enough for it to have a straight default. No matter it does what I expected.
I like these 'open build' type kits as you have the ability to go beyond the original design. I'm using this kit to help my niece and nephew gain an understanding of robotics and solar power. We will be replacing the batteries for some super capacitors and solar cells.
Going to get a large whiteboard and black erasable marker for custom tracks.
Really enjoyed putting this little line following robot car kit together. Instructions in English are available online The parts come loose in a plastic bag so step one can be identifying what are the parts are and where they go on the Printed Circuit Board (PCB) chassis. If you're helping a youngster put this kit together you can instruct them in reading the resistor codes or using a multimeter to identify the ratings of the resistors so placement on the PCB is correct. The PCB is really well marked so placement of the components is readily obvious as to the correct location even without referring to the instructions. The one-and-only critique I have is in the English instructions the picture of the LM353 in the socket is wrong. The right way is pin one (marked with a small circle) facing to the front. I'm attaching a picture of the LM353 IC correctly placed. You can have a lot of fun and learning putting this kit together and understanding the theory behind the way the LDRs (Light Dependent Resistors) detect the difference between the black of the line and the white of the area outside the line. And the way this information is used to keep the Robot Car on the right path.