1、简单易用，可快速上手
2、流畅支持300个器件或1000个焊盘以下的设计规模
3、支持简单的电路仿真
4、面向学生、老师、创客
1、全新的交互和界面
2、流畅支持超过3w器件或10w焊盘的设计规模，支持面板和外壳设计
3、更严谨的设计约束，更规范的流程
4、面向企业、更专业的用户
标准版 基于STM32F030K6T6TR的智能电子时钟设计
简介：该工程为《EDA技术及其应用（活页式）》教材的项目六 电子时钟电路
开源协议: GPL 3.0
1 项目简介
本项目电子时钟采用STM32F030K6T6TR单片机进行设计，通过实现光强度感应，来自动调整数码管亮度，实现电子时钟的时间显示。
2 总体方案
总体方案系统框图如图2-1所示，基于STM32F030K6T6TR的电子时钟由电源供电电路、STM32F030K6T6TR单片机、光敏电路、数码管驱动显示电路和按键设置电路所组成。
图2-1 基于STM32F030K6T6TR的智能电子时钟系统框图
3 电路原理
电源部分采用DC电源连接插座和Micro USB接口沉板设计，预留2Pin排针外接供电。
通过对STM32F030K6T6TR单片机编程，MG-52B光敏电阻实现光强度感应，来自动调整数码管亮度，使用74HC595移位寄存器来驱动显示数码管，实现时间的显示，自定义功能按键来调整设置电子时钟。
程序下载接口预留出SWD接口1x5Pin的2.54mm间距排针，UART接口1×4Pin的2.54mm间距排针。使用4个M3铜柱螺丝来固定板子。
图3-1 基于STM32F030K6T6TR的智能电子时钟原理图
4 物料清单
| 序号 | 位号 | 参数 | 封装 | 数量 | 商品编号 |
| 1 | R1,R2,R3,R4,R5,R7,R16,R18,R20,R23 | 10KΩ | R0805 | 10 | C17414 |
| 2 | R6 | 5KΩ | R0805 | 1 | C78980 |
| 3 | R8~R15,R22 | 510Ω | R0805 | 9 | C25317 |
| 4 | R17,R19,R21,R24 | 100KΩ | R0805 | 4 | C149504 |
| 5 | C1,C3~C6,C8,C10,C14,C16 | 104 | C0805 | 9 | C49678 |
| 6 | C2,C13,C15 | 106 | C0805 | 3 | C2932476 |
| 7 | C7 | 470uF | CAP-TH_D6.3×L12mm | 1 | C43809 |
| 8 | C9 | 220uF | CAP-TH_D6.3×L7mm | 1 | C43331 |
| 9 | C11,C12 | 20pF | C0805 | 2 | C1798 |
| 10 | L1 | 220Ω | L0805 | 1 | C85840 |
| 11 | LDR1 | MG-528 | RES-TH-5mm | 1 | C559383 |
| 12 | VD1,VD2 | SS54A | SMA(DO-214AC) | 2 | C842792 |
| 13 | VT1~VT4 | 8050 | SOT-323-3 | 4 | C124378 |
| 14 | SW1~SW4,RST | K4-6×6_TH | KEY-TH-6×6mm_4P | 5 | C557624 |
| 15 | X1 | 8MHz | HC-49US | 1 | C258976 |
| 16 | LED1 | SLR0564FR1C4BD-3.5 | LED-SEG-TH_SLR0564FR1C4BD-3.5 | 1 | C225949 |
| 17 | U1 | STM32F030K6T6TR | LQFP-32 | 1 | C88446 |
| 18 | U2 | L78M05CDT-TR | TO-252-3 | 1 | C55509 |
| 19 | U3 | 74HC595D | SOP-16 | 1 | C93838 |
| 20 | U4 | TLV1117LV33DCYR | SOT-223-3 | 1 | C15578 |
| 21 | DC1 | DC005-2.0MM | DC-IN-TH_DC005 | 1 | C431533 |
| 22 | USB1 | Micro USB | MICRO-USB-SMD_5P | 1 | C40957 |
| 23 | H1 | 2P排针 | 2.54mm_1×2P | 1 | C160332 |
| 24 | J1 | 4P排针 | 2.54mm_1×4P | 1 | C124378 |
| 25 | J2 | 5P排针 | 2.54mm_1×5P | 1 | C358687 |
| 26 | TP1~TP4 | 铜柱螺丝 | M3×10+6 | 4 | C551322 |
| 27 | — | PCB空板 | — | 1 | — |
5 焊接装配
图5-1 基于STM32F030K6T6TR的智能电子时钟装配图
图5-2 基于STM32F030K6T6TR的智能电子时钟实物图
| ID | Name | Designator | Footprint | Quantity | BOM_Supplier | BOM_Manufacturer Part | BOM_Manufacturer | BOM_Supplier Part |
|---|---|---|---|---|---|---|---|---|
| 1 | 104 | C1,C3,C4,C5,C6,C8,C10,C14,C16 | C0805 | 9 | LCSC | CC0805KRX7R9BB104 | YAGEO | C49678 |
| 2 | 106 | C2,C13,C15 | C0805 | 3 | LCSC | CL21A106KBYQNNE | SAMSUNG(三星) | C2932476 |
| 3 | 470uF | C7 | CAP-TH_BD6.3-P2.50-D1.0-FD | 1 | LCSC | 470uF 16V 6.3*12 | ValuePro | C43809 |
| 4 | 220uF | C9 | CAP-TH_BD6.3-P2.50-D1.0-FD | 1 | LCSC | 220uF 10V 6.3*7 | ValuePro | C43331 |
| 5 | 20pF | C11,C12 | C0805 | 2 | LCSC | CL21C200JBANNNC | SAMSUNG | C1798 |
| 6 | DC005-2.0MM | DC1 | DC-IN-TH_DC005 | 1 | LCSC | DC005 | SHOU HAN(首韩) | C431533 |
| 7 | 6V | H1 | HDR-TH_2P-P2.54-V-M-1 | 1 | LCSC | RE-H022TD-1190(LF)(SN) | JST Sales America | C160332 |
| 8 | HDR-M-2.54_1x5 | J1 | HDR-M-2.54_1X5 | 1 | LCSC | MTP125-1105S1 | MINTRON(明硕) | C358687 |
| 9 | HDR-M-2.54_1x4 | J2 | HDR-M-2.54_1X4 | 1 | LCSC | B-2100S04P-A110 | Ckmtw | C124378 |
| 10 | 220Ω | L1 | L0805 | 1 | LCSC | BLM21PG221SN1D | MuRata | C85840 |
| 11 | MG-52B | LDR1 | RES-TH_L7.0-W5.9-P5.00-D0.5 | 1 | LCSC | GL7537 | JCHL(Shenzhen Jing Chuang He Li Tech) | C559383 |
| 12 | SEG-Red-0.56×4_TH | LED1 | LED-SEG-TH_SLR0564FR1C4BD-3.5 | 1 | LCSC | SLR0564FR1C4BD-3.5 | SUNLIGHT(光华) | C225949 |
| 13 | 10k | R1,R2,R3,R4,R5,R7,R16,R18,R20,R23 | R0805 | 10 | LCSC | 0805W8F1002T5E | UniOhm | C17414 |
| 14 | 5k | R6 | R0805 | 1 | LCSC | TC0525B5001T5E | UniOhm | C78980 |
| 15 | 510R | R8,R9,R10,R11,R12,R13,R14,R15,R22 | R0805 | 9 | LCSC | 0805W8J0511T5E | UniOhm | C25317 |
| 16 | 100k | R17,R19,R21,R24 | R0805 | 4 | LCSC | 0805W8F1003T5E | Uniroyal Elec | C149504 |
| 17 | K4-6×6_TH | RST,SW1,SW2,SW3,SW4 | KEY-TH_4P-L6.0-W6.0-P4.50-LS6.5 | 5 | LCSC | TS668CJ | SHOU HAN(首韩) | C557624 |
| 18 | M3x10+6 | TP1,TP2,TP3,TP4 | M3X10-6 | 4 | LCSC | M3x10+6 | Shuntian(顺天五金) | C551322 |
| 19 | L78M05CDT-TR | U2 | TO-252-3_L6.5-W6.1-P4.58-LS9.9-BR | 1 | LCSC | L78M05CDT-TR | ST | C55509 |
| 20 | 74HC595D | U3 | SOP-16_L10.0-W3.9-P1.27-LS6.0-BL | 1 | LCSC | SM74HC595D | MINGWEI | C93838 |
| 21 | TLV1117LV33DCYR | U4 | SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | 1 | LCSC | TLV1117LV33DCYR | TI | C15578 |
| 22 | USB-Micro_2 | USB1 | MICRO-USB-SMD_5P_C40957 | 1 | LCSC | 920-F52A2021S10101 | ValuePro | C40957 |
| 23 | SS54A | VD1,VD2 | SMA_L4.2-W2.6-LS5.1-RD | 2 | LCSC | SS54A | FUXINSEMI | C842792 |
| 24 | 8050 | VT1,VT2,VT3,VT4 | SOT-323-3_L2.1-W1.3-P1.30-LS2.3-BR | 4 | LCSC | SS8050W | CBI(创基) | C2836073 |
| 25 | 8MHz | X1 | HC-49US_L11.5-W4.5-P4.88 | 1 | LCSC | B08000J065 | ZheJiang East Crystal Elec | C258976 |
| 26 | STM32F030K6T6TR | U1 | LQFP-32_L7.0-W7.0-P0.80-LS9.0-TL | 1 | LCSC | STM32F030K6T6TR | STMicroelectronics | C88446 |
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