The logic analyzer made of Raspberry Pi rp2040 board can also be used

damiaa

The logic analyzer made of Raspberry Pi rp2040 board can also be used [Copy link]

 

The logic analyzer made of Raspberry Pi rp2040 board can also be used

walker2048

That's amazing. If the sampling rate is 30Mhz, how many seconds can be sampled?

lugl4313820

I look forward to the next work of the big guy, so that he can give guidance to many people!

damiaa

For 30M, you can set the digital port 1G sampling point. But it is generally difficult to sample 30M signals. Some people at Station B said that 12M signals can be sampled.

So there is no problem using this to test low-speed communications such as 232 485 canbus I2C SPI, etc.

This is open source on the Internet. If you have rp2040, you can make it for daily use. Make a simple testing tool. Anyway, it's cheap.

You can do it with this board.

okhxyyo

Can you open the source ~ share the schematic PCB and code ~ interested netizens can also copy it

damiaa

I bought this board directly from Taobao, but that store didn't have the complete schematic diagram for this one. The schematic diagram is similar to that of the Raspberry Pi rp2040.

The circuit I built is mainly to be able to connect to a level above 5V. The signal enters on the left and the rp2040 digital port is connected on the right. It is similar to the following

The software is available as open source online.

freebsder

pluseview This is interesting, thanks for the information

Jacktang

The red line is very beautiful.

御坂10032号

Open fewer channels

吾妻思萌

Everything can fly, long live the flying line invincible party

nmg

damiaa posted on 2024-7-24 13:41 I bought this board directly from Taobao, but that store didn't have the complete schematic diagram for this one. The schematic diagram is similar to that of the Raspberry Pi rp2040. The circuit I built is mainly...

I saw a similar project

Based on the 5-dollar Raspberry Pi RP2040, a 24-channel 100Msps logic analyzer open source project

https://www.eeworld.com.cn/RDesigns_detail/57471

Compared with yours, it seems like you can just buy a 28 yuan board and burn it, right?

damiaa

nmg posted on 2024-8-2 11:42 I saw a similar project based on the 5-dollar Raspberry Pi RP2040, a 24-channel 100Msps logic analyzer open source project http...

I bought it for 11 yuan. It is a domestic board. If you don't have money, save it. If you have time, you can draw it yourself.