Palm oximeter

W1 Laser Rangefinder https://oshwhub.com/18511895537/TOFji-guang-ce-ju-yi

1. Project Brief Introduction

The portable oximeter developed based on the heart rate sensor includes: MCU drive circuit, lighting circuit, display driver, buzzer and other driving circuits and software components.

2. Application scenarios

• Heart rate, pulse, oxygen saturation measurements.
• Depending on this circuit or the associated peripheral drive, a wide range of applications can be expanded.

3. Hardware parameters

• Processor: ESP32C3 (WIFI, Bluetooth)
• Screen: 0.96 TFT color screen
• Operation: Multi-directional reset button
• Power supply: Charging and discharging includes: lighting (flashlight), soft power on/off
• Circuit: Buzzer, voltage sampling
• Shell: Use the Pro version to view the shell

4. Directions for use

1. Burning program, power on, save the settings with power-off, and automatically load the last setting.
2. When the main control chip is QFN package and soldering, please use the heating table → DC low-voltage heating table
3. Pay attention to distinguish between components with positive and negative electrodes to avoid short circuits.
4. Please do not check whether there is a short circuit before powering on to avoid chip burning!!
5. Key function (illustrated below)

5. Program-related

1. Prepare the program to burn (TTL connection PCB RX TX GND)
2. Press and hold the middle button to insert the USB port, select the serial port, and click Start (wait for the program to be burned)

6. Test video