2 layers12.5 × 160.7 mm
2 layers203 × 68.5 mm
Semafor
renata7zemanova/Semafor1- Size
- 203 × 68.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 114
- Nets
- 88
- Pads
- 388
- Tracks, vias
- 801, 108
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 11 Oct 2022
- Updated
- 6 Jun 2023
Overview
Semafor is an open-source printed circuit board by renata7zemanova, from the renata7zemanova/Semafor repository on GitHub. It is a 2-layer board of 203 × 68.5 mm with 114 parts on 88 nets, routed with 801 tracks and 108 vias.
It is built around the ESP32-C3, AT42QT1070-SSU and LT1930ES5, with the CN3058E, PCA9536D and WS2812B among its other parts. Its parts include 30 resistors, 26 capacitors, 23 diodes, 11 connectors and 7 transistors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
7
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
AT42QT1070-SSU
SOIC-14-40℃~+85℃ 1.8V~5.5V 7 Capacitive Touch SOIC-14 Touch Sensors ROHSMicrochip TechnologyTouch Sensors
LT1930ES5
SOT23-5(2.6V to +16V) Input to (-0.4V to 36V) Output, 1A, 1.2MHz Step-Up DC-DC ConvertersAnalog DevicesUncategorised
CN3058E
SOP-8-EP-40℃~+85℃ 1 1A 3.6V 3.8V~6V 3uA LiFePO4 Battery Support 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、欠压锁定 SOP-8-EP Battery Management ROHSShangHai Consonance ElecBattery Management
PCA9536D
SOIC-8-40℃~+85℃ 1 2.3V~5.5V 24mA 250nA 4 4.1V 400kHz I2C、SMBus No Interrupt Output Reset function SO-8 I/O Expanders ROHSNXP SemiconductorsI/O Expanders
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
MBR0520
SOD-123-55℃~+150℃ 20V 450mV@500mA 5.5A 500mA Independent SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
README
README.mdSemafor
Parts
114| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 100n | Capacitor_SMD:C_0603_1608Metric | C4, C6, C11, C12, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26 +1 |
| 13 | 10k | Resistor_SMD:R_0603_1608Metric | R4, R5, R7, R11, R16, R17, R18, R19, R20, R21, R22, R23, R30 |
| 12 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 4 | 100k | Resistor_SMD:R_0603_1608Metric | R14, R15, R24, R25 |
| 4 | 10u | Capacitor_SMD:C_0805_2012Metric | C5, C7, C8, C14 |
| 4 | Cap_btn | Library:Cap_btn_1,6x1,6 | BTN2_UP1, BTN3_DOWN1, BTN4_RIGHT1, BTN5_LEFT1 |
| 4 | Conn_01x04_Female | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5, J7, J9, J11 |
| 4 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q1, Q3, Q4, Q6 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R6, R12, R29 |
| 3 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C1, C10, C13 |
| 3 | Conn_01x03_Male | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J3, J4, J13 |
| 3 | D_Schottky | Diode_SMD:D_SOD-123 | D21, D22, D24 |
| 3 | Green | LED_SMD:LED_0603_1608Metric | D13, D15, D16 |
| 3 | SD05_SOD323 | Diode_SMD:D_SOD-323 | D18, D19, D20 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | Conn_01x06_Female | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J6, J8 |
| 2 | Q_PMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q2, Q7 |
| 1 | 100u | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R27 |
| 1 | 13k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 150k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 180R | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 1k2 | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 22k | Resistor_SMD:R_0402_1005Metric | R26 |
| 1 | 39k | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 4u7 | Library:L_CDRH3D18 | L1 |
| 1 | AT42QT1070-S | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | Battery_Cell | Library:battery_dock | BT1 |
| 1 | Buzzer | Library:PIEZO | BZ1 |
| 1 | CN3058E | Package_SO:SOP-8_3.76x4.96mm_P1.27mm | U2 |
| 1 | Cap_btn | Library:Cap_btn_4x4 | BTN1_ENTER1 |
| 1 | Conn_01x02_Female | Connector_PinSocket_1.27mm:PinSocket_1x02_P1.27mm_Vertical | J2 |
| 1 | E22-900T22D | Library:E22-900T22D | U4 |
| 1 | ESP32-C3 | Library:ESP32-C3 | U1 |
| 1 | LT1930 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | MBR0520 | Diode_SMD:D_SOD-123 | D17 |
| 1 | Motor_DC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | M1 |
| 1 | PCA9536D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | Q_Photo_NPN | Library:SMD,3.5x2.8x1.9mm | Q5 |
| 1 | Red | LED_SMD:LED_0603_1608Metric | D14 |
| 1 | SW_SPDT | Library:BTN_1101M2S2AV2QE2 | SW1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
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Questions
How big is the Semafor PCB?
It measures 203 × 68.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Semafor use?
114 parts, built around the ESP32-C3, AT42QT1070-SSU, LT1930ES5 and CN3058E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Semafor KiCad files?
From the renata7zemanova/Semafor repository on GitHub, at the commit this page was made from: the board is HW/v1.0/Semafor.kicad_pcb and its schematic HW/LEDs.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Semafor design in my own project?
Its repository states no licence, so its author keeps all rights: ask renata7zemanova before reusing the design.