RP2040 + ADS1256 DAQ board
Вставка
- Опубліковано 5 вер 2024
- Check out PCBWay's website for rapid prototyping of printed circuit boards, CNC and 3D printing services and many more! pcbway.com/g/m...
In this video, I present my next, and hopefully final iteration for the ADS1256-based 24-bit, 8-channel, 30 ksps DAQ board.
As compared to my most recent design ( • ADS1256 Official Ardui... ) I replaced the microcontroller with an RP2040 microcontroller. It is 5x cheaper and at least 5 times more powerful than the previously used ATmega32U4. The revised board also shrunk quite a bit which was necessary in order to fit it inside a nice aluminium enclosure I found on AliExpress.
Support me on Patreon: / curiousscientist
Check my blog for more details: curiousscienti...
Get the PCB from my PCBWay project page: www.pcbway.com...
Get the relevant parts: curiousscienti...
Would love to see how your layouted those smooth curved lines? Need to make round boards and the layout limitations are killing me.
Hi! I draw the lines as usual, and then I use a plugin in KiCAD that allows to round the tracks. In fact, KiCAD can also do it without any plugins. Just select a track and choose the fillet track option. You can define a radius as well.
Put a red led for power supplyand green led for uart/usb tx rx
I see you haven't watched the video. :) There is a power supply LED. At both LDOs.
Regarding TX and RX LEDs, I don't find them useful, so I did not add them.
@@CuriousScientist I meant to put it outside the box.drill two holes on the metal plate on the usb side.push two 3mm through hole led through it and connect wire to pcb .this help the end user like somebody who bought your product trouble shoot easily.For eg is the borad receiving power,yes if led is lighting up.if led not lighting up ,no power.maybe my usb c cable is faulty.
@@CuriousScientist regarding tx rx led.i would suggest you keep it because it is a good indication that the daq board is transmitting something
Thanks! Yes, it might be a good idea to have an LED on the front panel. Regarding the tx/rx LEDs, I still have the same opinion.
While it will cost some money may i suggest ordering PCBs from PCBway with holes and all for the rear/Front pannel you can even use the "silkscreen" to write fancy info like A0,A1,... and on the rear the specs of the DAQ box. Also please release a YT vid when you start selling as i am interested in replacing my ratsnest.
Examples
ua-cam.com/video/nV8RkhaKKb4/v-deo.html
ua-cam.com/video/wg_J9WElvBY/v-deo.html
ua-cam.com/video/UOQezMJ560o/v-deo.html
WOW! Hey, thanks! I have another project where I was thinking about using a PCB as the rear panel of the enclosure, but I did not think about it for this project. It is amazing that you brought it up, thanks! I will definitely design them and add them to the project. The extra cost will be relatively low because the dimensions of the panel boards will be small. Thanks once again, this suggestion will be super useful! Also, if you are a subscriber, you will definitely hear about any news related to this project because I will spam it all over the place. If you have Instagram, you can follow me there as well because I upload even more content there.
@@CuriousScientist Glad my 2cents could help wanted to do something like this but i never have the fortitude to finish/polish my stuff.
Thank you! You should never give up! I've been working with the ADS1256 chip for about 8 years. It took me roughly 4 years to develop my very own code by studying the datasheet of the chip. And it took roughly 2 years of iterations and learning to reach the current board design. Of course I did million other things in the meantime, but still. It is not a sprint, it is a marathon! 😄
Nice board,is this open-source.why are you using a large TBC connector in the latest iteration compared to the old versions
Hi! Thanks! No, the board is not open source because I want to sell it as a product. All older versions have the same big connector. I wanted to have something compact and neat to connect all the 16 possible input wires.
@@CuriousScientist ok
Vilket bygge!
Nice, I'm really interested in this journey and impressed by your builds and looking forward to a possible next video when you release it as a product!
I have a question regarding grounding of the box. It was not included in the video (i think?). Do you think it's irrelevant for the performance and no protective usage as its only usb-powered?
Tack!
Yeah, I haven't mentioned anything regarding the grounding. Actually, the board is floating. It is not connected to the ground in any way. But I will do some investigation on the effect of this. I will get some new front and rear panels manufactured for the enclosure, and I will conduct some tests. So, at this moment, I don't really know if it has any effect.