Thank you for purchasing D2 – type 2 programmable tracing car kit, this suite gives you a preliminary understanding of embedded control principle and technology, we hope to take this product enables you to learn the relevant knowledge of skills, and further study to lay a solid foundation for later. When using this product, please operate according to the requirement of the specification, so that the correct use of this product.
§ 1 system introduction
The patrol sensor of this system USES the infrared transceiver tube, and use the LM393 voltage comparator converts analog signal of infrared receiving tube microcontroller can identify level signal. Embedded control core is 51 series microcontroller AT89C2051.
Using AT89C2051 embedded control core is mainly consideration of cost and performance. AT89C2051 and AT89X51 without using external ROM, RAM and instruction is the same, and AT89C2051 has smaller volume, very suitable for beginners to use.
§ 4 assembly and debugging
§ 4.1 electronic components assembly
According to the circuit diagram and circuit boards identifier in turn color ring resistance, crystals and ceramic dielectric capacitors, light-emitting diodes, integrated circuits, row needle, potentiometer, switch, triode, electrolytic capacitor welding on the circuit board, pay attention to the electrolytic capacitor and IC don’t weld the (wrong). Otherwise after electricity can make the chip fever and large electrolytic capacitor leakage, unfavorable to the normal work of the circuit. In addition to pinpoint infrared transceiver tube, please don’t tube welding infrared transceiver first, should be in the assembly and welding.
All electronic components to carefully check the circuit board after welding is complete, in order to avoid a virtual welding, welding leakage, short circuit, and so on and so forth. If you have a suspected case of short circuit in view the multimeter and control circuit diagrams can be used for screening. The above situation must be excluded before electricity, otherwise may cause damage to electronic components after electricity line was burn out or circuit boards, etc. If the above problems, the goods caused by the dealer is not to exchange. In some extreme cases there may have some components or battery explosion, such as to endanger the safety of the user. The above situation please users to give the necessary attention.
Install the battery case according to the direction of the circuit board shown. Don’t put wrong (wrong), so as not to affect the power cord access. After the installation is complete the battery box wire from the battery box in the upper left corner of 2.5 hole hollow. In the reverse side have corresponding power bonding pad, polarity, and the length of the wire when welding.