[RVB2601 Creative Application Development] Ultrasonic pressure-sensitive buttons based on RISC-V processor

dragon2610

[RVB2601 Creative Application Development] Ultrasonic pressure-sensitive buttons based on RISC-V processor [Copy link]

 

1. Ultrasonic pressure sensors can work under metal panels. First, stick the FPC with the sensor to the back of a 3mm thick aluminum plate (other materials are also acceptable, such as the plastic + leather panel in the picture).

2. Connect to the RVB2601 development board via I2C, port the sensor driver and firmware to the CH2601 platform, and calibrate the sensor.

3. The platform reads ADC data and button status through I2C. Once it detects that the aluminum plate is pressed (at the circular logo), the LED will display blue and the OLED screen will display the words Press/Release. Pressing other places will not trigger because there is only pressure signal but no ultrasonic signal.

For detailed functional block diagram, source code, video, log and summary, please see the attached Word document.

Source code: ch2601_ultrasound_force_demo.7z (18.8 MB, downloads: 7)

2022-6-21 12:11 上传

点击文件名下载附件

dragon2610

Re-attach the code

Link:

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Extraction code: 35ct

Jacktang

Well organized, go to the network disk to download the detailed evaluation information

lugl4313820

Congratulations on completing the work, the speed is really extraordinary. Thank you for your hard work!

littleshrimp

Does this ultrasonic button consume a lot of power?

anthpo

Support me, mine is almost finished

dragon2610

littleshrimp posted on 2022-5-5 07:40 Does this ultrasonic button consume a lot of power?

It is not large, at the uA level. This is not a ranging ultrasound that is transmitted in the air, but is transmitted inside the material, so it can achieve low power consumption.

littleshrimp

dragon2610 posted on 2022-5-5 10:14 It is not very large, at the uA level. This is not a distance measurement ultrasound that is transmitted in the air, but is transmitted inside the material, so it can achieve low power consumption.

Is there any relevant information? I want to learn it, but I didn't find it after looking on Taobao.

dragon2610

littleshrimp posted on 2022-5-5 12:13 Is there any relevant information? I want to learn it, but I didn’t find it on Taobao.

https://www.ultrasensesys.com/