This project was initiated at the request of a group member. It's a modification of the "Little Scumbag God's Eye Plus" project (https://oshwhub.com/myzhazha/shen-zhi-yan-plus).
The main changes are as follows:
1. The original USB used CH340 for programming, which prevented the use of the USB data transfer function in my firmware. This version uses a USB CDC port for programming and data transfer.
2. The original button 2 was blocked by the USB port and was difficult to press. It has been changed to a stopwatch-style button (top left and top right) that is more ergonomic.
3. The original version could not be powered on when plugged in and required a battery. This version allows it to power on directly when plugged in.
4. The original DC-DC chip is far too small, making it difficult for older people (like myself) to solder. This version modifies the charging and power supply scheme to IP5306_CK + MP1471, making it easier to solder.
5. Due to insufficient GPIO, the original used a 3-IO DS1302RTC clock chip. This version uses an I2C DS3231 clock chip (more accurate, more expensive).
Both versions have synchronized firmware updates and no functional differences (this version adds USB data transfer, allowing direct data copying without removing the card). For all files, directories, and production methods, please refer to the original instructions (Zha Yi's explanation is incredibly detailed).
Related materials and firmware can also be downloaded from my cloud drive: https://pan.baidu.com/s/19-CHRh_MAejMqFVaL9os6Q?pwd=e8y5.
All new features and firmware will be posted there.
Note that you need to drill holes in the case yourself according to the new model. For IP5306, you need to buy the version with CK (available on Youxin).
This has been verified and successfully produced by a certain Deli Sha.
PDF_God's Eye Plus Minor Modification.zip
Altium_God's Eye Plus minor update.zip
PADS_God's Eye Plus minor update.zip
BOM_God's Eye Plus Minor Modification.xlsx
97237
esp32_cam replica circuit
The circuit of the Anxinke ESP32-CAM has been copied to facilitate secondary design.
Circuit Source:
ESP32-CAM Camera Development Board | Ai-Thinker Technology (ai-thinker.com)
Circuit Modifications:
1. The download port has been modified with a download mode toggle switch. When switched to download mode (GPIO00 connected to GND), the serial port can download programs. Referring to the previous cold-start-free download circuit, batch program burning can be achieved.
2. The ESP32-CAM DEMO program can be used to implement webcam monitoring in a browser. Other functions can be developed as needed.
Discussion:
1. My usage only requires capturing images of a few tens of kilobytes, so the prototype circuit can eliminate the TF card and PSRAM, and even eliminate the ESP32-WROOM-32-N4, directly using the ESP32-S2 microcontroller design.
2. The ESP32-WROOM-32U module can be used to replace the ESP32-WROOM-32-N4, with the same package and pinout.
PDF_esp32_cam replica circuit.zip
Altium_esp32_cam replica circuit.zip
PADS_esp32_cam replica circuit.zip
BOM_esp32_cam replica circuit.xlsx
97238
Handheld detector (based on Liangshan School)
This project is based on the Environmental Monitoring Extension Board project, a project that was shelved due to procrastination (x)
Project Introduction:
This project is based on an environmental monitoring expansion board project, with slight modifications.
Expected Functionality
: Basic Functions:
Temperature and humidity sensor: for detecting temperature and humidity data;
Barometric pressure sensor: for detecting atmospheric pressure data;
Harmful gas sensor: for detecting harmful gases and other data;
Screen: for real-time display of collected data;
Wireless communication: for sending data to receiving devices.
Desired Additional Functionality (Under Development):
Compass,
leveling instrument, distance measuring instrument , illuminance detection
circuit design. For basic circuit design and functional circuits, please refer to the official case study. Other functional circuits of the environmental monitoring expansion board will be explained after testing (the remaining modules are mostly I2C communication, and their circuit reference value is not significant). Currently, the project runs the official code correctly. I am currently learning LVGL interface development and debugging the remaining modules for physical verification.
Physical verification.mp4
Official complete test cases.zip
Module Status Test.zip
PDF_Handheld Detector (Based on Liangshan School).zip
Altium_Handheld Detector (Based on Liangshan School).zip
PADS_Handheld Detector (Based on Liangshan School).zip
BOM_Handheld Inspection Device (Based on Liangshan School).xlsx
97239
PCM2706C+ES9023P-USBDAC
USB Type-C input, PCM2706/PCM2707 output I2S, ES9023P as DAC, sound quality meets the needs of listening to music during work.
This is a modified version of the aesthetically pleasing and functional Es9023-USBDAC from JLCPCB's EDA open-source hardware platform (oshwhub.com).
It was changed from Micro USB to Type-C USB, with minor modifications to inductors and other components. The ground plane copper pour was also slightly altered.
The total size is 12*82mm
. The cost on Taobao is approximately 20 RMB (excluding common components like resistors and capacitors).
I recommend using the PCM2707C, as it's cheaper than the PCM2706C.
The structural components are naturally unusable; it's wrapped in heat-shrink tubing mainly because the board is small and easy to lose (though you might eventually lose it).
PDF_PCM2706C+ES9023P-USBDAC.zip
Altium_PCM2706C+ES9023P-USBDAC.zip
PADS_PCM2706C+ES9023P-USBDAC.zip
BOM_PCM2706C+ES9023P-USBDAC.xlsx
97242
electronic
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