Bingdundun keychain size is about 4cm*4cm

BDD1.zip

61986

ESP-C3 core board

Introduction: Based on the core development board of ESP32-C3, the overall board uses a 4-layer board.

The core development board based on ESP32-C3 adopts a 4-layer board as a whole. All pins are lead out to facilitate subsequent development. The recommended gold finger female base is NGFF 67P B-KEY5+6, just search it directly

BOM download

PCB_espC3_PCB_2022-09-22.pdf

PCB_espC3_PCB_2022-09-22.json

espC3_PCB_2022-09-22.pcbdoc

Gerber_espC3_PCB.zip

Schematic_ESP-C3 core board_2022-09-22.pdf

SCH_ESP-C3 core board_2022-09-22.json

Schematic_2022-09-22.schdoc

61987

[Internet of Things] Hongmeng IoT Smart WIFI Switch

Introduction: Use Hongmeng Hi3861 combined with a servo to achieve remote control of physical switches in your home or dormitory

Use Hongmeng Hi3861 combined with a servo to achieve remote control of physical switches in your home or dormitory

A0B77900E3752D0B85457B71128AAC02.mp4

BOM download

PCB_NEW_PCB_2022-09-22.pdf

PCB_NEW_PCB_2022-09-22.json

NEW_PCB_2022-09-22.pcbdoc

Gerber_NEW_PCB.zip

Schematic_[Internet of Things] Hongmeng IoT Smart WIFI Switch_2022-09-22.pdf

SCH_[Internet of Things] Hongmeng IoT Smart WIFI Switch_2022-09-22.json

Only switch schematic_2022-09-22.schdoc

61988

Upgraded version of M328 electronic load G01

Introduction: An upgraded version of Mr. GandF’s M8V6 electronic load

The engineering principle code is not original.
Original by Yile GandF, improved and upgraded by cdhigh.
The relevant program source code can be obtained by moving to the link below. This project does not retain relevant program files.
Original open source code: https://www.yleee.com.cn/thread-6795-1-2.html
Original information of this project: https://www.yleee.com.cn/thread-90734-1-1. HTML
 
version update:
v1.6-20220407: 1. Update the ch340 power supply method to support QC and PD deception without affecting USB data.
                           2. Modify the details of the serial port burning principle. Supports firmware updating through USB serial port burning.
                           3. Add the op amp power supply jumper for the load part, 5V & 9V. If you choose low conduction mos, you can use 5V GS8552/92.
                           4. Optimize other details.
v1.7-20220418: 1. Delete the 5/9V jumper, and still use LM358, 9V defaults, and the reliable LM358 offset is only about 30uV.
                           2. Add a small current signal on the back to amplify it 100 times, and the range is tentatively 500mA. Passive displays do not participate in control.
                           
 
If DIY is required, the motherboard part can be left alone, and the display part must be replaced with other LCDs. The ones I use are left over from ancient times and cannot be purchased.
And the panel opening must be changed for dynamic display. The fan part is designed according to the actual radiator, and you can modify it yourself if needed.
Because the panel design is larger than the motherboard, it can be installed on the chassis as an embedded module.
 
The following is copied content. If there is any infringement, please contact me to delete it.
Features of M328V6* Support 12864 LCD/OLED * Support discharge voltage curve display, try to get rid of the host computer * Support multi-point calibration of voltage and current (up to 8 points), effectively avoid non-linear problems * Support temperature drift compensation, accurate in winter and summer * Supports constant current/constant resistance/constant power modes * Added current ramp-up function to avoid overshoot current burning the tube * Adjustable maximum current and maximum power * Coulomb meter supports ampere-hours and watt-hours, and the accumulated ampere-hours can exceed 65Ah * Temperature Display, temperature protection and automatic PWM fan, each temperature point is adjustable* Improved encoder operation, more convenient* Supports scheduled switching load/cycle switching load* Supports USB serial port or Bluetooth serial port and two-way communication with the host computer, the host computer can fully The functional control slave   
 
 
is shown below as a sample picture. The circuit has been slightly modified, but the content is the same. The panel has not yet been installed. The
panel interface is a 2mm banana socket.
Matching radiator: TB Search-12V industrial control motherboard radiator. ￥10, it seems that not many have
 
PDQC decoy input or DC input in stock (only DC input is required when data connection is required).
The radiator can withstand 60W, and the fan has been enhanced to a 4.5W turbo fan. The original one is 1w.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

QQ video20220321090552.mp4

ibom-loadG01_v1.4.rar

QQ video 20220331205906.mp4

20220421_002755.mp4

VID20220421131016.mp4

20220421_184659.mp4

BOM download

PCB_PCB1_Motherboard_2022-09-22.pdf

PCB_PCB1_Motherboard_2022-09-22.json

PCB1_Motherboard_2022-09-22.pcbdoc

Gerber_PCB1_motherboard.zip

PCB_PCB_M328 electronic load G01_2022-09-22.pdf

PCB_PCB_M328 electronic load G01_2022-09-22.json

PCB_M328 electronic load G01_2022-09-22.pcbdoc

Gerber_PCB_M328 electronic load G01.zip

PCB_PCB2_Display Board_2022-09-22.pdf

PCB_PCB2_Display Board_2022-09-22.json

PCB2_display board_2022-09-22.pcbdoc

Gerber_PCB2_Display Board_2022-09-22.zip

PCB_PCB3-Heat dissipation MOS small board 1_2022-09-22.pdf

PCB_PCB3-Heat dissipation MOS small board 1_2022-09-22.json

PCB3-heat dissipation MOS small board 1_2022-09-22.pcbdoc

Gerber_PCB3-Heating MOS small board 1_2022-09-22.zip

PCB_PCB4-Fixed backplane 1_2022-09-22.pdf

PCB_PCB4-Fixed backplane 1_2022-09-22.json

PCB4-Fixed backplane 1_2022-09-22.pcbdoc

Gerber_PCB4-Fixed backplane 1_2022-09-22.zip

PCB_PCB5-Panel 1_2022-09-22.pdf

PCB_PCB5-Panel1_2022-09-22.json

PCB5-Panel 1_2022-09-22.pcbdoc

Gerber_PCB5-Panel 1_2022-09-22.zip

Schematic_Upgraded version M328 electronic load G01_2022-09-22.pdf

SCH_Upgraded version M328 electronic load G01_2022-09-22.json

Sheet_1_2022-09-22.schdoc

61989

USB data cable tester

Introduction: The first low-invasive PCB in 2022, used to test whether various USB cables are broken.

The first low-invasive PCB in 2022, used to test whether various USB cables are broken.
All right. To put it bluntly, it is a network cable tester. It's just used to test the USB cable.
VBUS, CC1, CC2, D-, D+, TX-.TX+, RX-, RX+, GND are independent scanning measurements.
DIAN (ID), SBU1, and SBU2 are rarely used, and the direct power supply shows continuity.
The shell uses the GND signal to show whether the shielding layers of the two ends are connected.
*Because the emark line has MOS, the power supply will be blocked. But it does not affect the judgment of the data pins*
 
The four TPCs in the upper row are all powered, and are only used to test whether the package is suitable. Just solder any one you want to get electricity.
 
 

BOM download

PCB_PCB_Single board 1.2mm_2022-09-22.pdf

PCB_PCB_Single board 1.2mm_2022-09-22.json

PCB_Single board 1.2mm_2022-09-22.pcbdoc

Gerber_PCB_Single board 1.2mm.zip

PCB_PCB_USB data line tester_2022-09-22.pdf

PCB_PCB_USB data cable tester_2022-09-22.json

PCB_USB data line tester_2022-09-22.pcbdoc

Gerber_PCB_USB data cable tester.zip

Schematic_USB data cable tester_2022-09-22.pdf

SCH_USB data cable tester_2022-09-22.json

Sheet_1_2022-09-22.schdoc

61990

【Training Camp】Bionic Dog

Introduction: Developed based on Hongmeng Hi3861 main control, PCA9685PW is used to control the movement of 8-channel MG90S servos. It uses a 7.4V/2000mA battery as the external power input and supplies power to the servos and MCU system through a buck chip. And connect to the external serial port programming pin.

        Since I haven't had enough time recently, the project content has not met my psychological expectations. I need to take some time to optimize it. This project comes from the "Bionic Robot Dog Design Training Camp" project of Lichuang EDA. The purpose is to make a mechanical dog. The finished product is as follows, which is a little crude (the board is still small and the holes are not aligned).​