基于stm32超声波震荡频率stm32程序+原理图

Field=Comment~String~Comment~100|Field=Description~String~Description~100|Field=Designator~String~Designator~100|Field=Footprint~String~Footprint~100|Field=LibRef~String~LibRef~100|Field=Quantity~Integer~Quantity~100|ReportField=Currency~<none>|ReportField=ProductionQuantity~1|ReportField=ProjectFileName~Free Documents|ReportField=ProjectFullPath~Free Documents|ReportField=Title~Bill of Materials For Schematic Document [原理图 - 副本.SchDoc]|ReportField=TotalQuantity~44|ReportField=ReportTime~21:26:00|ReportField=ReportDate~2018/4/27|ReportField=ReportDateTime~2018/4/27 21:26:00|ReportField=OutputName~Bill of Materials|ReportField=OutputType~BOM_PartType|ReportField=GeneratorName~BOM|ReportField=GeneratorDescription~Bill of Materials|ReportField=VariantName~None|ReportField=Address1~|ReportField=Address2~|ReportField=Address3~|ReportField=Address4~|ReportField=ApprovedBy~|ReportField=Author~|ReportField=CheckedBy~|ReportField=CompanyName~|ReportField=CurrentDate~2018/4/27|ReportField=CurrentTime~21:22:41|ReportField=Date~|ReportField=DocumentFullPathAndName~C:\Users\lifu\Desktop\1241-超声波震荡频率\原理图 - 副本.SchDoc|ReportField=DocumentName~原理图 - 副本.SchDoc|ReportField=DocumentNumber~|ReportField=DrawnBy~|ReportField=Engineer~|ReportField=ImagePath~|ReportField=ModifiedDate~2018/4/21|ReportField=Organization~|ReportField=ProjectName~|ReportField=Revision~|ReportField=Rule~|ReportField=SheetNumber~|ReportField=SheetTotal~|ReportField=Time~|ReportField=Title~|ReportField=DataSourceFileName~原理图 - 副本.SchDoc|ReportField=DataSourceFullPath~C:\Users\lifu\Desktop\1241-超声波震荡频率\原理图 - 副本.SchDoc 104|Capacitor|C1, C2, C3, C4, C5, C6, C7, C8|CAP|Cap|8 LED1|Typical RED GaAs LED|D1|LED-1|LED1|1 Diode 1N4007|1 Amp General Purpose Rectifier|D2|DO-41|Diode 1N4007|1 LED||D3|LED_0805|LED1|1 Header 3X2|Header, 3-Pin, Dual row|P1|HDR2X3|Header 3X2|1 LCD1602|Header, 16-Pin, Dual row|P1|HDR2X16|Header 16X2|1 Header 2|Header, 2-Pin|P2, P3|HDR1X2|Header 2|2 Header 4|Header, 4-Pin|P4, P9, P10|HDR1X4|Header 4|3 Header 8|Header, 8-Pin|P5, P6, P7, P8|HDR1X8|Header 8|4 Header 3|Header, 3-Pin|P11|HDR1X3|Header 3|1 MESFET-N|N-Channel MESFET|Q1|TO-18|MESFET-N|1 MESFET-P|P-Channel MESFET|Q2|TO-18|MESFET-P|1 500|Resistor|R1|LED_0805|Res3|1 1K|Resistor|R2|LED_0805|Res3|1 10K|Resistor|R3, R4, R5, R6, R7, R8|LED_0805|Res3|6 SW-SPDT|SPDT Subminiature Toggle Switch, Right Angle Mounting, Vertical Actuation|S1, S2|HDR1X3|SW-SPDT|2 AMS1117||U1|LM1117|AMS1117|1 STM32F103C8T6|STM32 ARM-based 32-bit MCU Performance Line with 64 kB Flash, 20 kB Internal RAM, -40 to +85癈 Temperature, 48-Pin LQFP, Tray|U2|LQFP48_N|STM32F103C8T6|1 按键||U3|key|Component_1|1 方型按键||U4, U5, U6, U7|key|Component_1|4 co||Y1, Y2|TT|crystal oscillator_晶振|2