Hezhou iot power usb

BOM download

PCB_PCB_iot_power_usb_2022-09-24.pdf

PCB_PCB_iot_power_usb_2022-09-24.json

PCB_iot_power_usb_2022-09-24.pcbdoc

Gerber_PCB_iot_power_usb_2022-09-24.zip

Schematic_Hezhouiot power usb_2022-09-24.pdf

SCH_Hezhouiot power usb_2022-09-24.json

Sheet_1_2022-09-24.schdoc

61474

Electric vehicle controller power board

Introduction: 100A electric vehicle brushless driver (model aircraft ESC) power board.

Brushless motor driver base plate, suitable for electric vehicle drivers, brushless motor drives, and ESC power boards. Wide voltage adaptable to 18v-100v. The current can reach 100A. The size is about the size of a standard IC card.

BOM download

PCB_BLDC_B_PACK_V03_2022-09-24.pdf

PCB_BLDC_B_PACK_V03_2022-09-24.json

BLDC_B_PACK_V03_2022-09-24.pcbdoc

Gerber_BLDC_B_PACK_V03.zip

PCB_BLDC_B_PACK_V02_2022-09-24.pdf

PCB_BLDC_B_PACK_V02_2022-09-24.json

BLDC_B_PACK_V02_2022-09-24.pcbdoc

Gerber_BLDC_B_PACK_V02.zip

PCB_BLDC_B_PACK_2022-09-24.pdf

PCB_BLDC_B_PACK_2022-09-24.json

BLDC_B_PACK_2022-09-24.pcbdoc

Gerber_BLDC_B_PACK.zip

Schematic_Electric vehicle controller power board_2022-09-24.pdf

SCH_Electric vehicle controller power board_2022-09-24.json

Electric vehicle controller power board_2022-09-24.zip

Schematic_Electric vehicle controller power board_2022-09-24.pdf

SCH_Electric vehicle controller power board_2022-09-24.json

Electric vehicle controller power board_2022-09-24.zip

Schematic_Electric vehicle controller power board_2022-09-24.pdf

SCH_Electric vehicle controller power board_2022-09-24.json

Electric vehicle controller power board_2022-09-24.zip

Schematic_Electric vehicle controller power board_2022-09-24.pdf

SCH_Electric vehicle controller power board_2022-09-24.json

Electric vehicle controller power board_2022-09-24.zip

61475

3D printer klipper control board Mini E3S6

Introduction: It’s coming! The small size / low cost / 6-axis 3D printer control board that can flash Klipper firmware is here!

项目背景
   玩3D打印机真是很上瘾，上个项目装了一台Voron 0.1机器，配套4轴控制板：https://oshwhub.com/xiao5333/SKR-MINI-E3V2-v0-1
     有很多人装3D打印机是为更方便快速打印结构件，可也有很多人在装3D打印机过程中沉迷其中，忘了初衷。 一直装机一直爽，很不幸我就是……
      之前玩了一段时间marlin固件控制板，调个参数或改个配置都要求重新编译固件，真的很麻烦。后面会把我画的小蜜蜂ESP32控制板PCB文件进行开源。目前优秀的开源3D打印机基本都是双Z轴或三Z轴，加上XY轴和挤出机，6轴控制板是最低要求。基于上次开源的4轴控制板，释放显示屏接口，重新分配引脚，带来了这次开源的6轴3D打印机控制板——Mini E3S6。
     它可以适配I3架构或CoreXY架构双z轴双限位机型，适配除Voron2.4外所有Voron机型（Voron官网链接），或其它三z轴及以下机型。具备完善的电路保护，最重要的是它的尺寸控制在10*5.5cm，使用专业版JLC EDA设计，你懂得。
 
Mini E3S6 规格
MCU：STM32F103RCT6/GD32F103RCT6；
电源输入：12V/24V （未插入步进电机驱动模块时电路防反接保护）；
各端口ESD防护，步进电机反电动势保护；
可拔插保险管；
一个加热头和一个加热床，采用大功率MOSFET；
2路可控风扇（喉管/吹料），一路5V风扇（驱动器散热）；
4路NTC100K测温；
X/Y/Z1/Z2 限位；
6轴可更换步进电机驱动，STEP/DIR标准模式，其中X/Y/E0轴可以使用TMC UART模式；
板载32Kb EEPROM；
预留UART1用于串口屏或其它通信；
3DTOUCH 自动调平传感器接口；
RST按键/BOOT0接口/SWD调试下载接口/SPI接口
TF卡座；
支持Klipper或Marlin固件（后期有需求再提供，目前不想搞）。     
Mini E3S6 使用说明
PCB尺寸10*5.5cm，4层板，可以直接JLC下单。目前STM32F103RCT6芯片很贵，可以使用GD32F103RCT6进行替代，可以把电路板成本控制在80元内；
焊接完成后首先烧录Klipper固件（附件提供2022年7月编译的固件），推荐请使用官方教程生成最新不带Bootloader的固件通过SWD接口或UART1烧入，Bootloader请自行研究，目前已知GD32F103RCT6不支持HID DFU模式；
配置步进电机驱动器（4988、8825、8729、TMC2208、TMC2209、TMC2225、TMC2226等）
       控制板背面的跳线用于设置STEP/DIR标准步进电机驱动的细分设置（如A4988，短接对应3个跳线为16细分），全部使用标准模式驱动器就短接所有的0402 0R跳线，H5不短接。
      其中X/Y/E0轴可以使用TMC UART模式，Z1/Z2/Z3必须使用STEP/DIR标准模式，配置如下图所示：
       
 
Mini E3S6 测试进度（随时更新）
使用STM32F103RCT6 MCU，与Klipper上位机连接已测试；
热敏接口测试已通过；
限位接口测试已通过；
X/YZ1/Z2/Z3/E0步进电机驱动已测试；
挤出头/热床控制已测试；
风扇控制已测试； 
TF卡读写待测试
3DTOUCH待测试
装机待测试
       
20220812：
      附件增加Klipper配置文件，请按需修改。
 
 

Mini_E3S6_klipper.bin

SCH_Mini_E3S6_sch_2022-07-19.pdf

PCB_MINI_E3S6_驱动器配置图.pdf

PCB_MINI_E3S6正面接口标识.pdf

printer.cfg

61476

MicroPython 电子负载

简介：有源DC恒流电子负载，设计功率100W，ESP32主控，MicroPython编程。

 
     When the electronic load is working, there are many risks such as electric shock, high temperature burns, and physical damage caused by the high-speed rotation of the fan, which may lead to personal injury, disability, or death. Please operate in strict accordance with safety regulations and provide adequate protection. Minors should operate with the assistance of a guardian. Producing and using this product by yourself means that you have a sufficient understanding of the security risks, and you are responsible for any losses and consequences caused. Neither the platform nor the author assumes any legal responsibility.
 
Design instructions:
1. Use ESP32 master control and use MicroPython programming to implement the 100W electronic load constant current function;
2. Input voltage - DC12V;
3. Load terminal input voltage: 1~30V, maximum constant current value: 6A;
4. Design the maximum The power is 100W, which is related to the heat dissipation;
5. This design is used for MicroPython learning applications. Many functions have not yet been implemented (constant voltage/constant power/battery discharge, etc.), and some small details are not perfect. Everyone is welcome to improve it together;
6. The original design uses AD software, and the schematic is imported into the standard version. If there is a problem with the PCB import, it is available for download.
 
Old habit, use whatever is on hand: a discarded industrial power supply/775 cooling fan/LCD1602, with I2C interface board, the finished picture is as follows:
After disassembly, the assembly picture is as follows:
 
 
The actual loading interface is as follows:
 
Schematic description:
    Equipment DC5 .5 power socket, input 12V power supply, add reverse connection protection:
     12V power supply is converted from MP1584 DCDC power module to 5V output to provide power for the device. USB 5V power input is only used for compiling or programming programs. 3-way LDO is provided separately. Terminal processor and analog circuit power supply:
    The INA229 current detection chip and the OPA2340 operational amplifier together form a constant current feedback circuit. A few more anti-reverse diodes are placed, which is easy to make. There is no need to solder R39 and the adjustable resistor:
MCP4725 DAC chip output comparison The voltage is used to set the output current:
 
Instructions for use:
    1. Using firmware written in MicroPython, please refer to the online tutorial to configure the MicroPython environment of ESP32: Quick Start MicroPython Development ESP32
    2. Upload all the Python code in the attachment to ESP32 and run ESP_ELD_V2.1 .py;
    3. The rotary encoder is used to control the constant current value, which can be controlled when the load is connected or not;
    4. The button controls the load switch.
 
 

ESP32_ELD_PCB_V2.pdf

ESP32_ELD_Python.7z

ESP32_ELD_2107_V2.7z

ESP32_ELD_2107.CSV

BOM download

Schematic_MicroPython electronic load_2022-09-24.pdf

SCH_MicroPython electronic load_2022-09-24.json

MicroPython electronic load_2022-09-24.zip

61477

F4 flight control-adapted to DOBBY four-axis brushless frame

Introduction: F4 flight control adapted to DOBBY four-axis brushless frame

Project background:
    Have you ever bought DOBBY’s four-axis brushless frame from Lihua or Lao Wang’s? The pocket drone stand
    frame includes 4 1104 4300KV brushless motors produced by Yinyan, foldable arms, with propellers, and costs less than 30 oceans.
You can buy an upper cover and a backup propeller separately, making it a must-have four-axis product for your home.
 
    After getting this rack, I found that it was difficult to fix the F4 flight controller on the rack. If I made an adapter plate to increase the height, the upper cover could not be installed.
I had no choice but to draw a flight controller to fit the holes in the rack for fun.
 
Description of the schematic diagram:
    1. The schematic diagram is based on the OmnibusF4V3-Pro flight controller, and the corresponding betaflight/PX4/INAV and other firmware can be directly flashed;
     
     2. The DCDC and LDO chip models have been modified;
     3. There is a WS2812B indicator light on the board;
     4. Lead out the SPI receiver pin, and you can use the SPI receiver directly, but you need to modify the firmware;
     5. The default on-board buzzer, or an external buzzer;
     6. Use 0603 package resistor to avoid welding cremation field.
 
Flight control specifications:
Processor
STM32F405 

Sensor
MPU6000 IMU
BMP280 Barometer
voltage and current sensor

interface
UARTS
6 PWM output
RC input PWM/PPM
I2C port
USB interface
built-in OSD

 
Instructions for use:
      1. Short-circuit BOOT0 (P11) and then use the serial port P6 ( or SWD P4) and flash the attached BOOTLOADER program;
       2. Power on again and connect betaflight to flash the OmnibusF4SD firmware to use;
                    3. The attachment contains the schematic/Gerber file/BOM/BOOTLOADER boot program.
 
 
Flight demonstration video:
https://www.bilibili.com/video/BV1U3411W7CT?share_source=copy_web
 
 
 

F4_DOBBY project BOOTLOADER.zip

F4_DOBBY_Control.pdf

gerber_F4_DOBBY_Control.zip

F4_DOBBY_Control.xlsx

BOM download

61478

electronic