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Tracking Patrol Lline Intelligen tRobot Car DIY Kit With Reduction Motor 18% OFF Tracking Patrol Lline Intelligen tRobot Car DIY Kit With Reduction Motor US$8.99 US$10.99 View It
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Top Positive Review for %s on Banggood, Shop best %s with lowest price on Banggood. Browse most helpful positive review for %s before you buy., rc toys, fun sports, fashion, popular electronics
Professor99 14/05/2017
As another person noted the soldering points tend to pull off the PCB and break the connection with the leads; I had to solder a few jumper wires to make connections where this occurred. As many people noted the instructions are in Chinese only but the PCB has markings where all the parts should go and also which way they should go in many cases. Just ensure that the capacitors and LEDs are mounted correctly for positive/negative. The capacitors are marked on their negative side and the LEDs have a shorter lead on the negative side. A volt/ohmmeter was handy for finding the value of the different resistors (rather than reading the stripe codes) and for making sure that the switch was mounted correctly (only 2 leads are actually used on the switch so ensure that these ones are opened/closed by the switch. The picture at Banggood was good for showing things like where the other parts go. Also make sure that the wheels both turn to make the robot go forward before soldering the leads to the small connecting points on the motors. Just reverse the wiring on any motor that isn't turning in the correct direction. It shouldn't be necessary to move the sticky tape to the other side. Soldering the sensor LEDs and the photo resistors so that they are set up correctly was tricky to do even though the concept is simple: just make the photoresistors a little closer to the floor than the LEDs. I didn't need to add a hood around the photoresistor like some people mentioned. I adjusted the variable resistors so that it seemed to switch back and forth between the two motors quite quickly and consistently when I waved a thin black piece of paper past the photoresistor sensors. It ended up that both variable resistors were about their middle setting anyway so it's probably not critical. Please note that the driving wheels never both work at the same time like on some other robots. However the robot operated just fine so this doesn't seem to be an issue at all. If I had all the instructions above when I started this would have been a fast build. But still it was worth doing and I left the final few assembly steps for my grandson to do and he loved it!
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