tailieunhanh - Amphibionics build your own biologically inspired reptilian robot - part 4

của tác giả trang web đặt tại , và chỉ cần in các tập tin vào một sự minh bạch bằng cách sử dụng một máy in laser hoặc mực in máy bay phản lực với độ phân giải tối thiểu là 600 dpi. Sau khi tác phẩm nghệ thuật đã được chuyển giao thành công đến tính minh bạch, sử dụng các kỹ thuật nêu trong Chương 2 để tạo ra một hội đồng quản trị. Một hội đồng quản trị 4-inch 6-inch presensitized đồng tích cực là lý tưởng. . | Chapter 4 Frogbotic Build Your Own Robotic Frog Figure PCB foil pattern artwork. author s Web site located at and simply print the file onto a transparency using a laser or ink-jet printer with a minimum resolution of 600 dpi. After the artwork has been successfully transferred to a transparency use the techniques outlined in Chapter 2 to create a board. A 4-inch X 6-inch presensitized positive copper board is ideal. When you place the transparency on the copper board it should be oriented exactly as in Figure . Circuit board drilling and parts placement. Use a 1 32-inch drill bit to drill all of the component holes on the PCB. Drill the holes for the voltage regulator U1 with a 3 64-inch drill bit. Use Table and Figure to place the parts on the component side of the circuit board. Note that the PIC 16F84 microcontroller U2 is mounted in an 18-pin . socket. The 18-pin socket is soldered to the PC board and the PIC is inserted after it has been programmed. Use a fine-toothed saw to cut the board along the guide lines and drill the mounting holes using a 6 32-inch drill bit. Figure shows the finished main controller board. Check the finished board for any missed or cold soldered connections and verify that all the components have been included. The 97 Amphibionics Figure PCB component side parts placement. board will be tested later when programming the PIC microcontroller to coordinate the legs for jumping. Fabricating the Power Connector The next subassembly will be used to connect the battery pack to the controller board. Table lists the parts that will be needed. Figure Parts soldered to the finished PCB. 98 Chapter 4 Frogbotic Build Your Own Robotic Frog Part Quantity Description TABLE Battery clip 1 Connects to the battery pack List of Parts Needed to Fabricate the Power 2-connector 2 spacing Connector female header Switch 1 Single-pole single-throw 2-position toggle Connector wire 9 inches