This design uses the ESP8266 development board as the main control circuit part, and uses LCD1602 to display relevant weather data.
Because LCD1602 requires multiple IO ports to drive, and the esp8266 development board has fewer IO ports, we used an iic adapter board to convert it into iic signals for processing.
Use pin headers to connect the two boards to each other, directly supply power to the entire device through the micro_usb interface of the esp8266 development board, and lead out the backlight switch separately to enable the switch to control the backlight on and off.
This time, the Xinzhi Weather API is used to obtain weather data. On the display screen of LCD1602, there are a total of eight pieces of data information. Two pieces of data are displayed at a time and rotated every few seconds.
This design program code has been uploaded as an engineering attachment.
Schematic_[Test Passed] Internet of Things Desktop Weather Forecast Terminal_2022-09-23.pdf
SCH_[Test Passed] Internet of Things Desktop Weather Forecast Terminal_2022-09-23.json
This project is an infrared voice temperature measurement verification board based on stm32f103c8t6. It uses mlx90614 as the temperature measurement probe and displays it on the OLED screen in real time, while completing the voice broadcast of the temperature measurement results.
The program code is currently missing and will be submitted for your reference later.
Schematic_[Test passed] Infrared thermometer (with voice broadcast)_2022-09-23.pdf
This project is a small-sized, low-cost power amplifier board based on PAM8403, which supports dual-channel 3w full-range audio playback.
BOM download
PCB_PCB_2020-09-30_00-49-04_2022-09-23.pdf
PCB_PCB_2020-09-30_00-49-04_2022-09-23.json
PCB_2020-09-30_00-49-04_2022-09-23.pcbdoc
Gerber_PCB_2020-09-30_00-49-04_2022-09-23.zip
Schematic_[Test passed] PAM8403 Class D power amplifier board_2022-09-23.pdf
SCH_[Test passed] PAM8403 Class D power amplifier board_2022-09-23.json
Sheet_1_2022-09-23.schdoc
61744
[To be tested] PID self-balancing car
Introduction: pid balance car control panel
This project is based on stm32f103c8t6 design and controls the balancing car.
The project has not been tested. I don’t know whether it can run normally. The code has not been written yet. Please refer to it with caution.
BOM download
PCB_PCB_2020-11-01_17-29-51_2022-09-23.pdf
PCB_PCB_2020-11-01_17-29-51_2022-09-23.json
PCB_2020-11-01_17-29-51_2022-09-23.pcbdoc
Gerber_PCB_2020-11-01_17-29-51.zip
Schematic_[To be tested] PID self-balancing car_2022-09-23.pdf
SCH_[To be tested] PID self-balancing car_2022-09-23.json
Sheet_1_2022-09-23.schdoc
61745
[To be tested]STM32F103C8T6 core board
Introduction: stm32f103c8t6 core board design
This project is based on the core circuit design of stm32f103c8t6. The project has not been confirmed and there may be problems that need to be improved in the future.
BOM download
PCB_PCB_2020-09-09_19-22-23_2022-09-23.pdf
PCB_PCB_2020-09-09_19-22-23_2022-09-23.json
PCB_2020-09-09_19-22-23_2022-09-23.pcbdoc
Gerber_PCB_2020-09-09_19-22-23.zip
Schematic_[To be tested]STM32F103C8T6 core board_2022-09-23.pdf
SCH_[To be tested]STM32F103C8T6 core board_2022-09-23.json
Sheet_1_2022-09-23.schdoc
61746
[Test failed] Wired headset expands Bluetooth module
Introduction: 3.5mm wired headphone to Bluetooth module
This project is based on Jerry's AC6905 Bluetooth expansion chip. The test after proofing was not ideal and the project needs to be improved.
BOM download
PCB_PCB_2021-07-10_00-35-35_2022-09-23.pdf
PCB_PCB_2021-07-10_00-35-35_2022-09-23.json
PCB_2021-07-10_00-35-35_2022-09-23.pcbdoc
Gerber_PCB_2021-07-10_00-35-35.zip
Schematic_[Test failed] Wired headset expansion Bluetooth module_2022-09-23.pdf
SCH_[Test failed] Wired headset expansion Bluetooth module_2022-09-23.json
Sheet_1_2022-09-23.schdoc
61747
[Test passed] windows hello camera driver
Introduction: Dell 0JCXG0 camera Windows hello driver board
This project enables the Dell laptop camera to communicate with the computer through the USB interface.
BOM download
PCB_PCB_2021-02-02_05-12-38_2022-09-23.json
PCB_2021-02-02_05-12-38_2022-09-23.pcbdoc
Gerber_PCB_2021-02-02_05-12-38.zip
Schematic_[Test passed] windows hello camera driver_2022-09-23.pdf
SCH_[Test passed] windows hello camera driver_2022-09-23.json
Sheet_1_2022-09-23.schdoc
PCB_PCB_2021-02-02_05-12-38_2022-11-06.pdf
61748
USB2.0-HUB-1
Introduction: USB2.0 docking station uses a TYPEC interface as input and a four-way USB2.0 interface as output, which can drive commonly used serial devices such as handles, keyboards, mice, and U disks.
If it cannot be used after welding is completed, you can check whether the TYPEC interface is welded correctly. During welding, you can weld the LED and resistor according to your personal needs.
BOM download
PCB_PCB_USB2.0-HUB-1_2022-09-23.pdf
PCB_PCB_USB2.0-HUB-1_2022-09-23.json
PCB_USB2.0-HUB-1_2022-09-23.pcbdoc
Gerber_PCB_USB2.0-HUB-1_2022-09-23.zip
Schematic_USB2.0-HUB-1_2022-09-23.pdf
SCH_USB2.0-HUB-1_2022-09-23.json
Sheet_1_2022-09-23.schdoc
61749
STM32F411RE
Introduction: For Hui'er
BOM download
PCB_Device name changed_2022-09-23.pdf
PCB_Device name changed_2022-09-23.json
After changing the device name_2022-09-23.pcbdoc
Gerber_changed device name.zip
PCB_Order_2022-09-23.pdf
PCB_Order_2022-09-23.json
Place an order_2022-09-23.pcbdoc
Gerber_Order.zip
PCB_Manual Wiring_2022-09-23.pdf
PCB_Manual Wiring_2022-09-23.json
Manual connection_2022-09-23.pcbdoc
Gerber_Manual connection.zip
PCB_Automatic Wiring_2022-09-23.pdf
PCB_Automatic connection_2022-09-23.json
Automatic connection_2022-09-23.pcbdoc
Gerber_automatic connection.zip
Schematic_STM32F411RE_2022-09-23.pdf
SCH_STM32F411RE_2022-09-23.json
Schematic_2022-09-23.schdoc
61750
electronic
京公网安备 11010802033920号
TP_H - maximum temperature; TP_L - minimum temperature 
RAIN - rainfall probability; HUMI - air humidity 
SMF24C
