Barcode gun and Mitsubishi PLC RS232 communication

RS232 barcode gun test program.rar

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Three-axis MEMS accelerometer - Xiaomi smart bracelet design

This document introduces the application and reference design of ADI ADXL362 (ADXL362 data sheet) three-axis MEMS accelerometer in Xiaomi smart bracelet solution. ADXL362 micro-power three-axis MEMS accelerometer (typical application of acceleration sensor). Digital output, acceleration range is ±2/±4/±8 g. The operating voltage is 1.8V-3.3V, the power consumption is 2μA at the power supply voltage of 2V and 100Hz output data rate, and the power consumption of motion-triggered wake-up mode is 300nA. The device provides 12-bit output resolution, 8-bit format data, and a resolution of 1 mg/LSB in the ±2 g range. It is mainly used in hearing aids, home health equipment, motion-enabled power switches, wireless sensors and motion-enabled metering equipment.

Xiaomi smart bracelet complete design plan.rar

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Harry Potter style Bluetooth speaker design

I was thinking about what to get my girlfriend for Christmas. One of my friends told me that he wanted to make a 3D printed Minecraft torch for his brother. This inspired me to create something for Christmas for my girlfriend as well. As she loves the Harry Potter series, I decided to create a DIY Bluetooth speaker with Harry Potter design. I found some inspiration from Google images design. I needed to finish it in a short time because I didn't have a lot of time. So I decided to buy some small Bluetooth speakers and rebuild them. This DIY Bluetooth speaker is based on the Bluetooth Speaker CREAtiVE MUVO 2c. 2-layer PCB 20 x 84 mm FR-4, 1.6 mm, 1, HASL with lead, Green solder mask, White silkscreen PCB for 3D printed Harry Potter style Bluetooth speaker. PSB is designed for SMD micro switch TD-03XA-T SMD.

W210362ASS7_switches_module.zip

Harry+Potter+-+Deathly+Hallows+Bluetooth+speaker.zip

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QCA9379 Application Reference Schematic

QCA9379 is a Qualcomm solution, USB interface dual-channel 11ac standard high-performance WIFI solution, sharing the schematic diagram for easy evaluation and selection.

QCA9379 is a Qualcomm solution, USB interface dual-channel 11ac standard high-performance WIFI solution, sharing the schematic diagram for easy evaluation and selection.

QCA9379 application reference schematic.pdf

86880

[Open Source Materials for Competition] Electromagnetic Gun Circuit Diagram Design Materials

The circuit diagram of the electromagnetic main power supply and the control part are the same. Each MOS tube can be discharged. The main parameter is the distance and the distance between the photoelectric switch. Use electromagnetic force to push the object to run. Achieve the effect of rapid movement of the object. This data can be up to level 20. Generally, it is difficult to increase the speed to level 14 or higher. The maximum speed is 800M per second. Please do not use electromagnetic guns to hurt small animals. Children should not play! There are calculation tools in the data, and detailed records of each winding distance are recorded at level 7. People with basic knowledge need to understand. Level 7 can penetrate 5CM wooden boards with iron nails, and the farthest distance is about 50 meters. The effective distance is 10~20 meters.

Electromagnetic gun.rar

86881

Design of talking color detection system based on Arduino

In this project, I will show you how to make a talking color detection system. Arduino will detect the color using the GY-31 TCS3200 color sensor, and the detected color will make a sound by the DFPlayer module.

Source code.rar

Talking Color Detection System Arduino DFPlayer GY-31 TCS.pdf

86882

Multi-axis intelligent aircraft solution based on NXP (LPC4078&JN5168)

The hardware and software solution of multi-axis intelligent aircraft includes the following parts: flight control board, remote control board, ESC board, sensor board. For the flight control board, we use NXP LPC4078, which is based on the ARM Cortex-M4 core, with a main frequency of 120MHz and 512K Flash as the main controller. The remote control board uses NXP LPC1114, which is based on the ARM Cortex-M0 core, with a main frequency of 50Mhz and 32K Flash as the main controller. The wireless control uses NXP JN5168 with an amplifier distance of 6 kilometers. The ESC uses three solutions, namely Microchip PIC16F1938, Nuvoton Mini54, and NXP LPC1517. The sensor board uses BOSH BMI055 6-axis gyroscope, BMM150 geomagnetic sensor, and BMP280 pressure sensor. For software, we provide open source KK or German MK flight control as a reference.

151S5_0007_Schematics.zip

151S5_0007_Datasheet3.zip

151S5_0007_Datasheet2.zip

151S5_0007_Datasheet1.zip

86883

Open source microPython development board design

Recently I found that the microPython development board is really good. It has more functions than Arduino and is very flexible to use. There are very few microPython development boards on Taobao, and the price is also very high, all of which are more than 200. Therefore, considering the price and the small number of components on the board, if netizens complete it by DIY, they can save at least 70% of the cost. Therefore, all its information is open source. Python 3 syntax: complete Python lexical analyzer, parser, compiler, virtual machine and runtime. Contains command line interface and can be run offline. Python bytecode is compiled and run by the built-in virtual machine. Effective internal storage algorithm can bring efficient memory utilization. Integer variables are stored in the memory heap instead of the stack. Using the Python decorators feature, functions can be compiled into native machine code. Although this feature will bring about 2 times the memory consumption, it also makes Python have a faster execution speed.

MicroPython development board schematic + PCB source file + source code.rar

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electronic