IOTW-001(ESP8266) module

Introduction: IOTW-001 is based on the ESP8266EX IoT module.

WIFI remote control car (ESP12F)

Introduction: Replace the control panel of JJRC remote control car. Use ESP12F as receiver. Use Android app (OpenRC) as controller.

Schematic PCB

Simple 2.4G wireless car

Introduction: Use STM32F031C6T6 to receive 2.4G wireless information and use PWM to control four motors, differential forward transmission, reverse rotation, etc.

Schematic PCB

[Internet of Things] Hongmeng IoT Smart WIFI Switch +4219105A

Introduction: Use Hongmeng Hi3861 chip combined with a servo to achieve wifi remote control of physical switches in your home or dormitory.

Schematic PCB

USB-HUB integrated with ch340

Introduction: A USB2.0HUB integrated with CH340

Schematic PCB

【Training Camp】Little self-written clock

Introduction: A self-writing clock

Schematic PCB

16-channel servo driver board 1.0 based on PCA9685

Introduction: 16-way driver board based on PCA9689

Schematic PCB

Hongmeng WIFI series HI3861 core board 1.0

Introduction: Nothing else, just the minimum system and external power supply, and a 5V to 3.3V converter circuit

Schematic PCB

SN65HVD230 verification board

Introduction: The verification board of ti's non-isolated CAN transceiver SN65HVD is for reference only. I'm not used to using EASYEDA. I'll modify it later when I become more familiar with it. The main reason is that the interface silk screen is not marked.

Schematic PCB

[Internet of Things] Hongmeng IoT Switch

Introduction: A development version based on Chuanzhi Education Hi3861 Hongmeng IoT WiFi development module design

Schematic PCB

Pic-o_Link_2x4P

Introduction: Multi-protocol to WiFi module based on esp32, with UART and SPI interfaces

[Solicitation Order] Search for dot matrix clocks

Introduction: An Xinke ESP-C3-12F module developed using MicroPython, with a WS2812 matrix lamp bead, used to display the current time.

Schematic PCB

Serial port automatic download

Introduction: A design based on CH340C, which can be used to automatically download programs for ESP series chips or modules, and can also be used as a TTL serial port debugging tool.

Schematic PCB

ELRS 2.4G receiver e2812s+esp01f

Introduction: 2.4G receiver based on lora's ExpressLRS open source remote control radio frequency protocol, easy to DIY E28 ESP01F module assembly

Schematic PCB

elrs-rx-2.4g-pwm

Introduction: ELRS high-performance remote control protocol 2.4G receiver, outputs 5-channel PWM signal to directly connect to ESC and servo. It can also output the standard crsf protocol to connect to the flight control.

Schematic PCB

ELRS 2.4G transmitter-TFT color screen version

Introduction: ExpressLRS transmitter TFT color screen is more gorgeous, assembled using modules (ESP32 master control E28 RF), the quality and effect are guaranteed, and it is easy to make.

Schematic PCB

ELRS 2.4G transmitter DIY (modular E28 ESP32)

Introduction: ExpressLRS transmitter with OLED screen, assembled with modules (ESP32 master control E28 RF), quality and effect are guaranteed, and easy to make.

Schematic PCB

crsf-12pwm

Introduction: CRSF protocol receiver signal conversion to PWM output, 8 channels, or even 12 channels. According to the open source project CRServoF, the replacement chip is f103c6t6

Schematic PCB

STC three-port dual-voltage automatic cold start automatic downloader based on CH340C

Introduction: This equipment uses CH340C. When preparing to download, the RTS# pin may be set to low level to control the on and off of the device ground (GND). At the same time, this device also provides the choice of 3.3V and 5V voltage and the choice of three download ports.

Schematic PCB

WIFI temperature measurement module

Introduction: A low-power WFI temperature measurement module designed by an online junior novice teacher

Schematic PCB