Wireless 2-channel oscilloscope based on esp32-dev and your mobile phone

[xien551]

A demo now, under developing.

示波器.png (388.98 KiB) Viewed 11673 times

Two-channel, 150 ksps/ channel, for single-chanel, 2Msps.
Communication with mqtt, also support coap or Matter for future.
y-axis, 4095 bit resolution.
1V, 1.33V 2.66V, 3V four measurement scale.
mobile, ipad, PC support.
no APP or exe, just scan the two-dimensional code, control the device with your browser.

This case is used for education, since the pricision is not too high, but the web interface could emulation the real oscilloscope. And this demo just add the curor function.

xqo1s-66v0w.gif (4.63 MiB) Viewed 11673 times

[chegewara]

Nice project.
Would you like to co-op and port it to S2/S3 with USB support?

[xien551]

Thanks for your attention!

If I remember rightly, S2/S3's adc only support 100ksps, somehow slow for an oscilloscopes, but more expensive.

If the USB transmission is need, the USB to serial port may be more convenient. Native USB may be more fast, but difficult to develop.

Several oscilloscopes company have launch cheap oscilloscopes based on STM32 with 1Mbps, and its adc is more accurate than esp32. They have local screens and buttons. But if the company want to add usb connectivity, it shouldn't be too difficult.

The NI acquisition card is now ~500 yuan in china, 48kS/p, 14bit, usb-connected, high precision and powerful software ecology.

Maybe you could evaluate these situation, if you find some application scenarios really need S2/S3 for their large computing resource, please tell me and I could give a edition with USB to serial port and co-operate.

[corz.org]

Brilliant idea. Where is the code?

[xien551]

Thanks for attentaion. They are under developing now and will be put on github latter!

The programe is not perfect now, and something need to be modified to let the wavefrom be continous.

Maybe you could also use the web interface for you signal generator.

[corz.org]

Maybe you could also use the web interface for you signal generator.

Thanks for the laugh!