Low-cost Bluetooth code scanning payment module

Introduction: Use the Bluetooth scan code payment module of Pay Now, which is used in: scan code payment socket, washing machine scan code payment, various amusement vehicles scan code payment, various engineering vehicles scan code payment, mahjong machine scan code payment, air purifier Scan the QR code to pay, scan the QR code to pay for massage chairs, etc.

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[Internet of Things] WiFi smart switch +4212724A

Introduction: WiFi remote control based on Hongmeng HiSilicon 3861 chip

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CH579 USB/BLE dual-mode keyboard compatible with CIY68

Introduction: CH579 USB+BLE dual-mode keyboard, with lithium battery and sleep mode, RGB, PCBA compatible with CIY68 axis tester kit;

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Chen Xiangjun

Introduction: Assignment 1

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ESP32-S3 development board

Introduction: Just an ESP32-S3 development board

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Xiaomi_IoT DBS Xiaomi switch

Introduction: Xiaomi switch, supports Mijia direct connection, no programming required

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LoRa2BLE

Introduction: LoRa digital radio transmits and receives messages via Bluetooth link to mobile phones. It is intended to be a small tool for text chatting without the Internet.

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DSP: Mountain View BP1048B1

Introduction: Mountain View BP1048B1 DSP chip

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[Internet of Things] Hongmeng Internet of Things Smart WiFi Smart Switch +4212547A

Introduction: This project uses Hongmeng Hi3861 chip combined with aircraft to achieve physical wifi remote control at home or dormitory

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[Solicitation Order] ESP32 Bluetooth FM Speaker

Introduction: Use Anxinke ESP32-S development version to receive Bluetooth, output the I2S signal to UDA1334 for decoding, and the audio signal switches the ESP32-S Bluetooth, FM, and AUX audio sources to PAM8406 through the CD4052 switch.

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2.4G Yagi Antenna

Introduction: Improved based on the existing antenna on the forum, the original antenna is connected to https://oshwhub.com/kxxxxc/yagi_ant

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PB-03Kit

Introduction: The smallest development board designed using pb03 module

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RGB constant current driver for ESP32-C3

Introduction: Use ESP32-C3 as the main controller and three buck-type constant current chips to control RGB lights. It is directly connected to the Alibaba Cloud platform. It can hotspot network distribution and control and OTA upgrade of the Alibaba Cloud platform. It can be controlled by Tmall Genie, but HSV color correction cannot be done. It can be turned on and off.

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2021 Electronic Competition F Question Country 2

Introduction: The design uses grayscale morphology to preprocess the acquired images, and combines it with a convolutional neural network constructed based on Keras to achieve rapid recognition of ward numbers in 163ms, with an accuracy of up to 95%;

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tuya multi-mode gateway (verified)

Introduction: A development-free multi-mode gateway based on Tuya Smart

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85BK-V92 walkie-talkie solution (2)

85BK-V92 walkie-talkie matching operation version

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ESP32 flight control

Four-axis flight control based on ESP32

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Multifunctional LED clock based on ESP32

Multifunctional LED clock based on ESP32

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ESP-NOW remote control board

This is a matching remote control for DIY desktop audio, using ESP-NOW, two-way buttons, battery-powered with charging circuit

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USB to JTAG+UART downloader

Use BL702 to create a USB to JTAG+UART debugger

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