2 layers56.4 × 78.4 mm
2 layers22 × 71 mm
Circut
larry-wong/tiny_sensor34基于 ESP32-S3 的温湿度 / 光照 / 人体存在传感器和红外发射器。
- Size
- 22 × 71 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 50
- Pads
- 117
- Tracks, vias
- 177, 29
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 11 Jun 2023
- Updated
- 16 Jan 2024
Overview
Circut is an open-source printed circuit board by larry-wong, from the larry-wong/tiny_sensor repository on GitHub. It is a 2-layer board of 22 × 71 mm with 18 parts on 50 nets, routed with 177 tracks and 29 vias.
It is built around the ESP32-S3-WROOM-1-N8, GY-302 and AMS1117, with the S8050 among its other parts. Its parts include 5 resistors, 4 capacitors, 3 ICs, 3 connectors and 2 diodes. It belongs with the home automation and IoT and sensors and measurement boards and the ESP32 boards of this library.
Main components
4
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
GY-302
Light Intensity Illumination ModuleGENERICUncategorised
AMS1117
1.0 A Low-Dropout Fixed RegulatorAdvanced Monolithic SystemsUncategorised
S8050
SOT-23-55℃~+150℃ 1 NPN 100MHz 100nA 120 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
README.md基于 ESP32 的家庭智能传感器，搭配 Home Assistant 项目实现家自动化。
小巧的身材上集成温湿度 / 光照度 / 人体存在传感器和红外发射管。
硬件设计
-
主控选用 ESP32-S3-WROOM-1
-
温湿度传感器选用 HDC1080
-
光照度传感器选用 GY-302 模块
-
人体存在传感器选用 LD2410B 模块
-
红外发射选用 3mm 发射管
-
状态灯选用贴片发光二极管
-
采用 typec 口供电 / 烧写程序，针脚对应关系：
typec esp32 备注 GND (A1, A12, B1, B12) GND 接地 VBUS (A4, A9, B4, B9) 5V CC1 (A5), CC2 (B5) GPIO0 烧写固件时需接地 D+ (A6, B6) GPIO43 TX D- (A7, B7) GPIO44 RX
电路设计
原理图及 PCB 使用 kicad 绘制，项目文件见 circut 目录（依赖 ESPRESSIF 官方库）。
- 所有贴片元件均采用 0805 封装尺寸
- 焊接时可多留一些红外管引脚，以调整发射方向
- 不需要的传感器可留空
- 由于不同颜色发光二极管的压降不同，在 R3 为 100 欧姆时 D2 采用红色发光二极管效果较好，采用黄色发光二极管时亮度较低。若要使用其他颜色发光二极管可自行计算 R3 阻值。
固件设计
固件使用 ESPHome 搭建，配置文件见 esphome 目录。
- 暴露以下传感器至 Home Assistant:
- 一个温度传感器
- 一个湿度传感器
- 一个光照度传感器
- 一个人体存在二元传感器
- 一个人体存在距离传感器
- 一个可开关的 LED 灯（复用状态灯）
- 项目中对红外管的使用比较客制化，使用自定义的 MQTT 消息驱动。建议改用 Remote Transmitter 或自行修改。
应用参考
接入 Home Assistant 后，可使用暴露出的传感器实现一些家庭自动化，例如：
- 使用人体存在传感器配合光照度传感器控制灯
- 甚至可配合人体存在距离传感器大致确定人体位置后控制不同的灯
- 使用人体存在传感器配合温度传感器控制空调制冷 / 加热 / 关闭
- 使用湿度传感器控制加湿器
- 使用 LED 指示报警信息（电量低，扫地机集尘盒满等）
- 使用红外管控制空调 / 电视 / 浴霸等传统电器
- ……
捐赠
如果此项目对你有帮助，可扫描下方二维码请我喝杯咖啡 :)
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R4, R5 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C3, C4 |
| 2 | 100 | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | AMS1117 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | ESP32-S3-WROOM-1 | Espressif:ESP32-S3-WROOM-1 | U3 |
| 1 | GY-302 | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J1 |
| 1 | HDC1080 | Package_SON:Texas_PWSON-N6 | U2 |
| 1 | IR | LED_THT:LED_D3.0mm_IRBlack | D1 |
| 1 | LD2410B | Connector_PinSocket_1.27mm:PinSocket_1x05_P1.27mm_Vertical | J2 |
| 1 | LED | Diode_SMD:D_0805_2012Metric | D2 |
| 1 | S8050 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J3 |
Questions
How big is the Circut PCB?
It measures 22 × 71 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Circut use?
18 parts, built around the ESP32-S3-WROOM-1-N8, GY-302, AMS1117 and S8050. 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 Circut KiCad files?
From the larry-wong/tiny_sensor repository on GitHub, at the commit this page was made from: the board is circut/pcb.kicad_pcb and its schematic circut/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Circut design in my own project?
Its repository states no licence, so its author keeps all rights: ask larry-wong before reusing the design.
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