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USB供电，5通道触摸按键，SWIM调试接口，485通信接口，FLASH存储。
电路主要由电源电路模块、触摸电路模块、STM8S105K4最小系统电路、复位电路、外扩接口、基于W25Q64设计的FLASH存储电路等构成。
原理图：
BOM：
1 | Fu1 | 0805 fuse | fuse | 0805 Fuse |
| 1 | 2 | U6 | AMS1117-3.3V | 1A Low Dropout Voltage Regulator | SOT223 |
| 1 | 3 | U12 | button | button,4-Pin | push-button 4-Pin |
| 1 | 4 | U4 | button | SW_PB | push-button switch 3/6/5mm |
| 1 | 5 | U2 | Buzzer | buzzer | buzzer 12mm |
| 1 | 6 | C3 | cap | cap pol | TANTALUM 3528 | 10uF | 1 | 7 | C1 | Cap | Capacitor | 0805 Cap | 470nF | 1 | 8 | C14 | Cap | capacitor | 0805 Cap | 10nF | 1 | 9 | C15 | Cap | capacitor | 0805 Cap | 4.7nF | 1 | 10 | C9 | Cap | capacitor | 0805 Cap | 1uF | 1 | 11 | C7 | Cap Pol1 | Polarized Capacitor (Radial) | elec cap SMT 4x5.3 | 10uF/25V | 1 | 12 | J1 | DB9 | Receptacle Assembly, 9 Position, Right Angle | DB9 MALE |
| 1 | 13 | P11 | Header 2X2 | Header 2X2 | HDR 2X2 |
| 1 | 14 | P1 | Header 4 | Header, 4-Pin | HDR1X4 |
| 1 | 15 | P9 | Header3 | Header,3-Pin | HT3.96H 1X3 |
| 1 | 16 | DS1 | LED Segment | LED Segment Display | H |
| 1 | 17 | Y1 | MHz | Crystal Oscillator | Crystal SMT |
| 1 | 18 | R10 | Res | resistor | 0805 Res | 24k | 1 | 19 | R2 | Res | resistor | 0805 Res | 10k | 1 | 20 | R8 | Res | resistor | 0805 Res | 120 | 1 | 21 | R9 | Res | resistor | 0805 Res | 270 | 1 | 22 | U8 | SP3485 | 485IC | SOP8 Tivon |
| 1 | 23 | U1 | STM8S105KXT6C | ST 8-bit Microcontroller | TQFP32 |
| 1 | 24 | USB1 | USB socket | USB socket Female | MiniUSB female |
| 1 | 25 | U7 | W25Q64 | Flash Memory | SOIC8 W25Q64 |
| 1 | 26 | RP1, RP2 | 330 | Res pack,8-Pin | 0603 ResPACK |
| 2 | 27 | U5, U9 | ADPT005, ULN2003A | Seven Darlington Array, touch sensor | SOP16 TIVON |
| 2 | 28 | C5, C6 | Cap | Capacitor | 0805 Cap | 20pF | 2 | 29 | P4, P7 | Header3 | Header,3-Pin | HDR1X3 |
| 2 | 30 | P2, P3 | Heaser12 | Heaser,12-Pin | HDR 1 X12 |
| 2 | 31 | Q1, Q2 | NPN | NPN triode | S8050 SOT23 |
| 2 | 32 | R1, R6 | Res | resistor | 0805 Res | 680 | 2 | 33 | R3, R4 | Res | resistor | 0805 Res | 470 | 2 | 34 | D1, D2, D5 | LED_B, LED_R | LED | 0805 LED |
| 3 | 35 | R5, R7, R11 | Res | resistor | 0805 Res | 4.7k | 3 | 36 | D3, D4, D6 | SMBJ6.8CA | Zener Diode | M7 DO214AC |
| 3 | 37 | HOLES1, HOLES2, HOLES3, HOLES4 | HOLES | holes for fastening | HOLES |
| 4 | 38 | copad1, copad2, copad3, copad4, copad5 | copper pad |
| copper paddot |
| 5 | 39 | P5, P6, P8, P10, P100 | Header | row needles,2-Pin | HDR 1X2 |
| 5 | 40 | C2, C4, C8, C10, C11, C12, C13 | Cap | Capacitor | 0805 Cap | 0.1uF | 7 |
全部资料（压缩包）下载：
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