[isd1820]Simple module

BOM download

PCB_PCB_isd1820_2022-09-25.pdf

PCB_PCB_isd1820_2022-09-25.json

PCB_isd1820_2022-09-25.pcbdoc

Gerber_PCB_isd1820_2022-09-25.zip

Schematic_[isd1820]Simple module_2022-09-25.pdf

SCH_[isd1820]Simple module_2022-09-25.json

Sheet_1_2022-09-25.schdoc

61188

#十三级电竞#N32 ammeter

Introduction: N32 voltage and ammeter

Note: * Please fill in the required fields
at the registration stage ↓
 
* 1. The project function introduction
is modified based on the official case of N32. I am a novice and I drew everything according to the instructions. The design voltage of this table is 4.5v~30v, and the current is <5a.
I have tested 10v 10a and it generates huge heat. Don’t try it easily! ! !
There is a design error in the Type-c part. PD fast charging cannot be activated normally in the later stage. PD charging is just a decoration. QAQ
 
*2.
This is the first time the project attributes are doing this. Please forgive me if it is not done well. QAQ
 
* 3. The open source agreement
is written casually, it doesn't matter.
 
*4. The hardware part
is made using official cases, using N32 MCU, INA199A current detection chip and voltage dividing resistor to obtain data, and display relevant information on the OLED screen.
Ask other students to complete individual welding parts in collaboration.
The design error of Type-c results in the inability to sustain fast charging and the PD cannot be used! ! !
But VOOC can be activated! ! !
*5. The software part
is still copied from the official case, and the official clock source is changed to an external crystal oscillator.
The crystal oscillator circuit can be deleted.
The OLED display needs to be modified in two or three places before it can display properly.
 
More details: https://diy.szlcsc.com/posts/d76d9cb41705430e9a54e7a5feed07a5
 

VID_20220827190128.mp4

61189

discrete component relay

Introduction: Discrete Component Relays

The main reason for the relay module is that I only have a soldering iron on hand  
, so I just
soldered the remaining patches with my hands.

BOM download

PCB_Discrete component relay PCB_2022-09-25.pdf

PCB_Discrete component relay PCB_2022-09-25.json

Discrete component relay PCB_2022-09-25.pcbdoc

Gerber_Discrete component relay PCB_2022-09-25.zip

Schematic_Discrete component relay_2022-09-25.pdf

SCH_Discrete component relay_2022-09-25.json

Discrete component relay_2022-09-25.zip

61190

[Open Source] ElectronBot_0603_xfs

Introduction: Modification of the electronic electronicbot head motherboard based on Zhihui Jun

Based on the head PCB board of electronic robot, an open source project of Zhihui Jun, its open source connection is peng-zhihui/ElectronBot (github.com). The package resistance and capacitance packages are all changed to 0603 to facilitate welding. Some wirings are optimized to replace the same small size. TF card holder (available and cheap at Lichuang). . .

61191

ElectronBot_servodrive

Introduction: This is the steering gear drive module in Zhihui Jun's electronbot project. It has been slightly modified to facilitate welding.

Since the original pad is too small and easy to fall off, I made a slight change to facilitate soldering. It has been verified that it can be used. I will share it to facilitate everyone's board making. To avoid using the GER file directly, Jiali Chuanghui will say that there is suspicion of ordering. Just slightly change the text silk screen.

61192

【RA】Light matrix based on Renesas R7FA2E1

No profile yet

Cause:
I was having lunch one day when I was given a cue by my boss, who told me to participate in Lichuang EDA training to improve my skills. Then I started to join the group, learn Renesas chips, and start designing and making my first Renesas board. . Since there is always a situation where a person can travel a hundred miles only half a century ago, I roped in my former friends to participate in this training together. At the same time, I am very grateful to the technical support and answers in the Q group, and thank Lichuang EDA for sharing component coupons (YYDS)!
 
Project description:
This project uses Renesas [RA] MCUR7FA2E1A72DFL#AA0 as the main control chip. The original design intention of this project is to compete with previous project members on their technical level.
There are two power supply methods: battery direct drive and type-C. I choose 3.7V. , 600MA lithium battery power supply
includes peripherals, battery power-on switch, a button input, a potentiometer input, an LED light output, 1 group (16) ws2812 matrix lights, an MPU6050 interface (I wanted to use 6050 for lighting effects Switching)
functions include button switching of light effects, ADC potentiometer stepless dimming, and WS2812 color light strips to output various colorful modes.
Comes with a 3D printed shell.
The programming environment uses the official Renesas E2stduio. The program I uploaded also uses the E2stduio
 
 
 
video connection . :
[Eda] Renesas-based matrix lantern_bilibili_bilibili
 
Key1 button switch mode
Mode 1: White breathing (automatically enters after power-on)
Mode 2: Potentiometer adjustable white light brightness
Mode 3: Overall Bright white light flashing
mode 4: Monochrome running light mode (potentiometer adjustable hue)
Mode 5: Color mode (potentiometer adjustable hue)
Mode 6: Rainbow gradient color
 
 
 
 

E2stduio program.zip

shell cover.stl

shell.stl

BOM download

PCB_PCB_Lighting matrix based on Renesas R7FA2E1_2022-09-25.pdf

PCB_PCB_Lighting matrix based on Renesas R7FA2E1_2022-09-25.json

Schematic_[RA] Lantern matrix based on Renesas R7FA2E1_2022-09-25.pdf

SCH_[RA] Colorful light matrix based on Renesas R7FA2E1_2022-09-25.json

SCH_Lighting matrix based on Renesas R7FA2E1_2022-09-25.schdoc

PCB_Lighting matrix based on Renesas R7FA2E1_2022-09-25.pcbdoc

Gerber_PCB_Lighting matrix based on Renesas R7FA2E1.zip

61193

Level conversion module

Introduction: Level conversion between 5V and 2.7-3.3V can be achieved. The level conversion chip uses 74LVC4245, which can convert eight levels in the same direction at the same time. Integrated into a small modular circuit board, the level conversion direction can be controlled by a switch and equipped with a 3D housing.

Currently still pending verification

61194

Tuya IoT infrared voice assistant

Introduction: Tuya Smart and Lichuang IoT Practical Camp Project

### Project Introduction

Infrared voice assistant based on Tuya iot intelligent networked voice interaction module

- - -

### Project function introduction

* Can complete network configuration
* Can perform voice interaction
* Can perform voice interaction to query the weather
* Can complete infrared remote control
* Can perform voice control Remote Control

- - -

### Project Properties

Here you can fill in the completion progress bar of the project, select the check box according to the completed function, or display it as the completion progress of the function

* [x] Schematic Design
* [x ] PCB diagram design
* [x] PCB proofing
* [x] Welding test
* [x] Functional test
* [x] Program test

- - -

### The circuit explanation

basically refers to the reference circuit provided by Tuya, and I have added peripherals 5306 battery management part

### Picture

schematic:
![Schematic_Tuya IoT infrared voice assistant_2021-12-20.png] PCB:
![PCB_v2.0_2021-12-20.png] 3D rendering:
![image .png] Actual picture:
![844a6fea2ed39015b503068a6c07d15.jpg]
- - -

### Demonstration video

[Intelligent infrared voice assistant based on Tuya iot_bilibili_bilibili](https://www.bilibili.com/video/ BV1hL411j7b4?spm_id_from=333.999.0.0)

- - -

### Notes

- - -

BOM download

PCB_v2.0_2022-09-25.pdf

PCB_v2.0_2022-09-25.json

v2.0_2022-09-25.pcbdoc

Gerber_v2.0.zip

PCB_PCB_Tuya Infrared_2022-09-25.pdf

PCB_PCB_Tuya Infrared_2022-09-25.json

PCB_Tuya Infrared_2022-09-25.pcbdoc

Gerber_PCB_Tuya infrared.zip

Schematic_Tuya IoT infrared voice assistant_2022-09-25.pdf

SCH_Tuya IoT infrared voice assistant_2022-09-25.json

Sheet_1_2022-09-25.schdoc

61195

5870 fixed plate 4

Introduction: 5870 fixed plate

5870 fixed plate
[Nixie tube pocket watch v2-EDA open source hardware platform (oshwhub.com)](https://oshwhub.com/Wang233_CN/5870-hui-guang-guan-shou-biao_copy_copy_copy_copy_copy_copy_copy_copy_copy/edit)
![IMG_20210612_121518 .jpg]