This design uses DRV8313 to drive a brushless motor, which can drive a pan/tilt motor. There are two INA240A2 for current sampling, which can feedback the current size to the microcontroller in the form of analog signals. The voltage-reducing chip uses MP2225 to step down to 3.3V to power the current sampling chip. . Working voltage: 8-15V Working current: less than 1.5A

BOM download
PCB_PCB_BLDC foc copy_2022-09-22.pdf
PCB_PCB_BLDC foc copy_2022-09-22.json
PCB_BLDC foc copy_2022-09-22.pcbdoc
Gerber_PCB_BLDC foc copy.zip
Schematic_Brushless DC motor foc driver_2022-09-22.pdf
SCH_Brushless DC motor foc driver_2022-09-22.json
Sheet_2_2022-09-22.schdoc
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[Internet of Things] Hongmeng Smart Wife Switch +1600798A
Introduction: Use Hongmeng HS3861 chip combined with a servo to realize wife remote control of physical switches in homes or dormitories.
Use the Hongmeng HS3861 chip combined with the servo to realize wife remote control of the physical switch in the home or dormitory
IMG_20220315_164204.jpg
VID_20220315_163419.mp4
BOM download
PCB_PCB_[Internet of Things] Hongmeng Smart Wife Switch +1600798A_2022-09-22.pdf
PCB_PCB_[Internet of Things] Hongmeng Smart Wife Switch +1600798A_2022-09-22.json
PCB_[Internet of Things] Hongmeng Smart Wife Switch +1600798A_2022-09-22.pcbdoc
Gerber_PCB_[Internet of Things] Hongmeng Smart Wife Switch +1600798A.zip
Schematic_[Internet of Things] Hongmeng Smart Wife Switch +1600798A_2022-09-22.pdf
SCH_[Internet of Things] Hongmeng Smart Wife Switch +1600798A_2022-09-22.json
Hongmeng IoT smart switch_schematic diagram_2022-09-22.schdoc
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F1C200S development board that supports three screens
Introduction: Source project based on the open source board modified by AI_QY boss
: https://www.oshwhub.com/AI_QY/f1c100s_1
I replaced some of the components I had on hand and added several screen interface
welding processes. You can follow them here: https://whycan.com/t_8022.html
(Thanks to Brother Hao for sending the chip)

PDF_F1C200S development board supporting three screens_2022-11-05.zip
BOM_Board1_F1C200S development board modification_2022-11-05.xlsx
Altium_F1C200S development board supporting three screens_2022-11-05.zip
61918
12344
Introduction: ULN2003
Demo
BOM download
PCB_PCB_2020-02-12 19_27_03_2022-09-22.pdf
PCB_PCB_2020-02-12 19 27 03_2022-09-22.json
PCB_2020-02-12 19_27_03_2022-09-22.pcbdoc
Gerber_PCB_2020-02-12 19_27_03_2022-09-22.zip
Schematic_12344_2022-09-22.pdf
SCH_12344_2022-09-22.json
Sheet_1_2022-09-22.schdoc
61919
LGT8F328P-white light soldering iron V2.7
Introduction: Based on the domestic LGT8F328P chip, transplanted Stefan Wagner's work, the original work address is: https://easyeda.com/wagiminator/z-solderingstation-smd-v2
Based on the domestic LGT8F328P chip, the work of Stefan Wagner is transplanted. The address of the original work is: Yuan Lichuang's overseas version address.
The program is at: github. A new version has been released. I haven’t used the new version, so I’d better get used to the 1.7+ version.
This 1.7+ version of the code implements:// - Real-time monitoring of the temperature of the tip// - Temperature measurement of the tip// - PID temperature control// - Direct or PID control of the heater// - Can be controlled by an encoder Temperature// - Temperature control via rotary encoder// - Short pressing the encoder to enter short-time heating mode // - Boost mode by short pressing rotary encoder switch// - Long pressing the encoder to enter the main menu // - Setup menu by long pressing rotary encoder switch// - Handle movement detection (requires the handle to contain a vibration sensor) // - Handle movement detection (by checking ball switch)// - Handle connection detection (implemented by determining whether the temperature of the soldering iron tip can be read) // - Iron unconnected detection (by idenfying invalid temperature readings)// - Timer setting-sleep, shutdown time// - Time driven sleep/power off mode if iron is unused (movement detection)// - Can measure the main control chip Voltage and temperature, //This function of this chip is still under exploration, and there are differences in the internal registers. // - Measurement of input voltage, Vcc and ATmega's internal temperature// - Implement information display on OLED // - Information display on OLED // - Support passive buzzer // - Buzzer // - Allow setting different soldering iron tips Temperature calibration value // - Calibrating and managing different soldering tips // - Settings are saved in EEPROM and will not be lost when power is off // - Storing user settings into the EEPROM // - Allow hot-swappable soldering tips and pop up the soldering tip configuration Select menu// - Tip change detection// - Chip overheating and low voltage alarm// - Chip overheating and low voltage alarm// - Better real-time temperature bar and real-time power bar// - Better real-time temperature bar and real -time power bar// - Have transition animation// - Have transition animation// - Built in screen saver// - Built in screen saver// - Screen flip settings// - Screen flip settings// - Built-in English, Chinese, Japanese language pack // - Built in English, Chinese and Japanese language pack // - Power-on password setting // - System Password
The horizontal line above means that this function is not currently transplanted.
Thanks to the nulllab team for the technical support of the LGT8F328P chip. This chip is cheap (4-6 yuan a piece), powerful, has an optional built-in crystal oscillator, and the transplantation procedure is relatively simple.
Attached is a PCB-Gerber that can be printed directly and a modified LGT program. I have tested four or five units and there is no problem.


Uploading pictures is too slow. Let’s leave it at that. If you have any questions, you can communicate. Digital Home will post simultaneously and will explain in detail there.
L1.7PLUS-LGT.zip
BOM download
PCB_v2.7-original version_2022-09-22.pdf
PCB_v2.7-original version_2022-09-22.json
v2.7-original version_2022-09-22.pcbdoc
Gerber_v2.7-original version.zip
PCB_PCB_328P-White Light Electric Soldering Iron V2.7_2022-09-22.pdf
PCB_PCB_328P-White Light Electric Soldering Iron V2.7_2022-09-22.json
PCB_328P-White light soldering iron V2.7_2022-09-22.pcbdoc
Gerber_PCB_328P-White light soldering iron V2.7.zip
Schematic_LGT8F328P-White Light Electric Soldering Iron V2.7_2022-09-22.pdf
SCH_LGT8F328P-White Light Electric Soldering Iron V2.7_2022-09-22.json
SolderingStation v2_2022-09-22.schdoc
61920
electronic