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- čas přidán 15. 06. 2024
- The Raspberry Pi foundation spent a lot of money to create a new chip on the Pi Pico board for makers and gives it away for cheap. If I believe all the fanboy’s videos, it is the most important invention after sliced bread. But how does it compare with the Espressif and STM32 chips? Let’s have a closer look!
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Links:
Getting started: www.raspberrypi.org/documenta...
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Where I ordered my Picos: www.pi-shop.ch/
00:00 Intro
01:02: What we will compare
01:22 Competitors
01:33 The Ecosystem
03:12 The role of ARM (and RISC-V)
03:35 Start of comparison
03:46 The Cores / PIO / Memory
07:21 The Pins / ADC / DMA
08:34 USB / MicroPython / Thonny /Debugging
10:35 Wi-Fi and BLE
10:55 Power Consumption / Deep-Sleep / Powering Options
12:33 Price
13:17 My Verdict
15:38 Outro
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When I started to search for these informations by myself, I thought: "Wait! The guy with the Swiss accent for sure will do it for me!" Many thanks!😁
And he delivered;-)
you lazy lol
Haha, I concluded exactly the same thing. It was only a matter of time, I waited.
@@AndreasSpiess But what about the dedicated FMAC blocks ?
Finally somone comparing it with a proper board insted of Arduino nanos.
If you want to show something is good you best compare it with a 15 year old board ;-)
Most of those vids (the ones I have watched at least) also use an example project that even the Nano is massive overkill for...
xbox gamer : I would think the Teensy 4 or 4.1 should be included. It does cost a lot more than the Pico but is based on M7 rather than M0 in the Pico but has big memory like the Pico. Pico will probably be a good alternative to the Teensy unless you want the performance.
@@klave8511 in my country teensy cost nearly 7 times as much as pico dose.
@@xboxgamer9216 In my country blue Arduino Nano costs exactly $40.
Your comparison helps me to choose which board to do what, the charts putting the competitors side is already telling me a lot plus your verdict is gold.
Glad the video was helpful!
That small hand you use to point with is stupidly hilarious
It has a lot of fans ;-)
☝🏼 Proud member of the small hand fan band 🎖️
It's jarring when used with a real human hand in the background
@@AndreasSpiess ya😂
8:18 I think the es32-s2 has a CAN support, it's just called TWAI (two wires automotive industry for license reasons)
You are right. My mistake.
I bought a pair of the S2s specificly for that. Was doubting my choice when i saw the last video with TWAI/CAN not beeing supported.
@Ashok Rajpal Something with trademarks instead of patents, indeed.
@@AndreasSpiess do a video about can bus
@Ashok Rajpal did you compare specs yet? Thanks in advance
I think the Pi Foundation is planning to enter the Chip Designer realm. The Name RP2040 is already choosen in a way that new versions with multiple cores and such are a possible future option. I personally love the documentation for the chip, it is done so well.
Agreed.
Another exemplary video with no commercials. Thank you, thank you!
Glad you liked it!
Thanks for this neutral view. Your conclusion fits with my immediate gut reaction.
Glad that I was not completely wrong...
He's Swiss. They're always neutral ;)
@@zetaconvex1987 Except when it comes to banking regulations maybe
As usual, your videos are very informative and no sales & marketing BS ! Thanks again
Glad you like them!
Thanks Andreas - your reviews and projects have helped me through lockdown...
I hope it will end soon. I cannot get my stuff from Germany because of closed borders :-(
The quality of the Pico boards is excellent as well as having castellated edges for mounting directly. The PIO can be used for additional UARTs as well as I2S and even VGA output, currently messing about with it to see what I can make it do.
Agreed. I also will look-out for useful PIO projects.
Looking forward to the Pico W 😊. As always, great video!
:-)
My thought exactly.
Your verdict is quite comparable to mine. I was playing with my pico a few hours. After that, I put it aside and wait now until Arduino or platformio start supporting it. I just dislike creating another toolchain. Thanks for the video.
You are welcome! I also hope they will hurry up ;-)
Oh boy I was just thinking about this. Perfect time Andreas.Thank you
You are welcome!
I was looking forward to this comparison :-) Thanks Andreas.
My pleasure!
I was searching for this comparison but no one else ever done it. Thank you for the video
Glad it was helpful!
This is BY FAR the best and most comprehensive comparison I've watched on CZcams yet! Thanks for the content as always!
Glad you think so!
I freaking love your videos man. I might even pass my Maturita exam from IoT thanks to you!! Our teachers know little to nothing compared to you, so these videos are literally life saving for students like me.
Glas you can use the content! Maybe you suggest my channel to your teachers ;-)
@@AndreasSpiess I have sent our teacher some of your videos in the past but he just dissmissed me with "we don't have time for that" and then proceeded to waste time with BigClown kids toys rather than teaching us how to create our own projects which teaches so much faster.
Anyways thanks a lot for what you're doing, I appreciate it a lot.
Very informative video. Proper tech-journalism way above the standard. Thank you!
Glad you liked it!
I like your systematic style of presentation - easy to deduce and decide. was very helpful. thanks
Thank you. I am just a trained engineer ;-)
@@AndreasSpiess - exactly what a maker wants - and hopes to become eventually!!!
I ordered the board with the thought that you would do a comparison video soon, you have won the competition the board will arrive next week :)
:-)) I was lucky. I ordered the first day and only got one after I called them...
Been waiting for this video. Thank you!!
You are welcome!
Great video and really informative. Came across the video from a google news feed. Glad I did. Can't wait to look at some of your previous videos
Thank you. There are around 350...
Thanks for the comparison, very well-structured and presented, as always.
Glad you liked it!
I forgot to add: PIO (programmable IO) would allow to add CAN or I2S in theory (not sure if the resources suffice in practice) without any performance loss on the main processor.
Think of it like bit banging done right, and how that makes you more flexible.
The State maschins are independent off the main processor. but they run on the same Clock.
Thank you for the video. I no longer fell the need to try to get one of these right away. I will wait until they are available thru normal channels.
Good decision.
If you think about it these boards are priced way too cheaply. That's why they need to limit how many you can buy. Several years later you can only buy one RPi Zero at a time.
Nice comparison!!! was finding details about all these boards to compare myself and i found this video!
Glad you enjoyed!
The first interesting video on this board !
Thanks a lot for this analysis !
Ahah awesome introduction, I had the same feeling about slice bread !
So there’s still one man on this planet who is able to analyze before saying that it is extraordinary 😄
Congrats !
Thank you!
The fact the STM32F4 was released in 2011 and its comparable to this 2020/2021 chip, i would argue that even a bluepill STM32F1 released in 2007 is comparable lol
These are great pieces of HW, so underestimated ! I'm new to microdevices but this I knew for sure !
@@vencdee The Esp32 crushes all of these at the same price. Why bother with anything other than an ESP32 it has wifi and bluetooth low energy and has touch pins as well. Its like a pico on steroids'. Why mess with these weeker boards when you can get esp32 chips for 2 or 3 dollars a piece with 4 dollars shipping.
It may take a while to get it but .....
@@greyhnd001 I'm using ESP32 they are great but has some flaws, especially ADC is not accurate and gets blocked e.g. by wifi(ADC2) or by other peripherals. So I must still use the other boards. And RPi Pico has advantages like lower consumption from all the boards when active...
True. STM32G4 is a really good modern replacement. The even more impressive fact is that they are using the exact same pinout as before, so you can replace the MCU with zero tweaks.
@@greyhnd001 ESP32 is good if you are using very high level stuff. For anything low level, they are not good at all. Also they are way too power hungry, even without WiFi.
I'd like to see this RP2040 integrated in a full Raspberry board, so you get the best of two worlds: general operating system and a microcontroller taking care of I/O interfacing
I can imagine it will appear on a Pi5
Thank you very much for that detailed comparition.
Glad it was helpful!
Thanks for your detailed and fair review, Your channel is a Must for all Hackers, Makers, and Developers!
I hope so ;-) Thank you.
I thought of this and the video was landed....thank you 🙏
You are welcome!
the voice of reason after all the hype! My conclusion also - I don't have a direct use case for the RP2040
Especially when you already have arduinos, ESP boards or black pills laying around...
@@zeendaniels5809 so perhaps we have answered our question. Maybe the reason for this Pico us for people who already own a Raspberry Pi microcomputer and wants to dip their toes for the first time into the microcontroller world they hear about but have not felt comfortable yet trying out until now..maybe they are wanting the comfort of coming from the same brand they are used to?
@@pd8559 Indeed, I think that is exactly the case.
Seems like the Pico offers better I/O controller performance at lower power consumption than the others.
@@lawrencedoliveiro9104 lower power thanks to no wifi or bluetooth on the pico
Nice overview ! Well done !
:-)
So far Andreas i am watching a very good video. Thank you! i will watch it all eventually, i think pico has a lot of potential.
Unfortunately, it is not well accepted by the Arduino community and you do not find a lot of projects :-(
Thank you for the comparison video, Andreas. I too have been skeptical of this release and question the reasons behind it. It is a fair entry into the microcontroller market. Only time will tell. I will likely pick a couple up at some point for evaluation, but not today.
I think we agree on the situation
0:12 Thank you for the useful video, but as it is breakfast time, I still prefer the sliced bread 🍞 ;-)
Perfect. Enjoy your meal!
@@AndreasSpiess I think this is a mistake- freshly cooked bread is much tastier.
Very nice comparison and analysis.
Glad you liked it!
Great video as always 👍
Thanks for sharing your knowledge to all of us 👍😊
Thank you. You are welcome!
I've been waiting for the microcontroller authority to chime in! Thanks for the review. Sounds about what I expected, and I'll be getting some when the stores restock. I think the Pi foundation created the RP2040 specifically so they could open source it. The Broadcom patents have been preventing fully open sourcing the other Pi boards. Modern microcontrollers seem to have really good datasheets, but nobody is entirely open source so far as I know. I vaguely recall hearing they even plan to release the RP2040 schematics. 😱
I hope they can do that. Arm IP is not open source.
Thank you for the competition:
I'll stick with ESP32 or even Nano...
As probably many of us...
Even better. I stick to ESP8266 (on Wemos D1 mini board), still much cheaper and fit probably 99% of my home IoT needs. Not sure where I would need Pico board.
@@ziomalZparafii I like your design philosophy. This is why I also never went bigger than Raspberry Pi Zero. All my servers in the house are provided and for almost all the time the Pi Zero is using an average of 1% of its CPU. I do like the ESP32 for all the toys in the box it gives to play with but if I was designing for low power current efficiency I could also see going back to an ESP8266, battery and small solar panel(s) for a final design until I reach a point where I find myself hitting my head against the limitations I try to stop myself from defaulting to the most powerful tool in the box.
Very fair and informative analysis of the Pico and competitors.
Thank you!
Excellent review, now I know where to place it among the competition.
Glad you liked it!
I've been waiting for this comparison! As a new maker without a tie to the Arduino IDE, micropython is appealing to me especially because of the good documentation
A good choice!
Great review, I fully agree, nothing really amazing, but it's good to have as an option
I like the low power numbers for the chip. I don't really have a use for it though.
Thank you!
Hello Andreas, Gratulation for 300k Subscribers, many more will follow. Keep going and nice greetings Edi
Thank you very much. You also just got a new subscriber!
As always Andreas, you save the rest of us a ton of time by doing all the deep research for us! Thank You! If I look closely at some of the images of the RP, I notice (unless I am mistaken) a 3D WiFi antenna in the corner, but I do not see them in photographs of the production model. Did you notice that ?
Why would they add an antenna?
Tommorow i have my Final Exams for my Aprentenceship as Electrican for Automationtechnology but a Video from you must be watched :D
Good luck tomorrow!
Good luck with your exams
Automatiker?
@@gummibear654 ?
Grandpa Andreas! Can't thank you enough :") I really feel like you are the grandpa of the maker community. Always bringing it together :D
You do know right that he isn't that old? I mean look at his hand ! 0:40
You're the best!
@@Hasan... Hahaha He is our spiritual grandpa
@@AndreasSpiess You made my day :') Thank you!
Thanks for the honest comparison. Waiting for the esp32-c3 video
Coming in 2 weeks!
This video makes me feel like baking some Swiss fresh bread and buy few Pi Picos. Excellent chanel !
Thank you!
Hey, thanks for this comparison, this is very nice to see. I think you missed the point of PIO though, since you listed I2S as missing on the RP2040. The RP2040 does support I2S, it just uses a PIO core. You can find the necessary driver in the pico-extras repository by raspberrypi.
You are right with I2S. It seems to be supported in software. As I said: This is not too important in my opinion. I only used it once in a project. I am curious what we will see of the PIO and I for sure will look for useful stuff and I am glad when I was wrong ;-)
What is PIO?
@@requiem4adreamc Programmable I/O
@@mikiex Thank you :)
I agree with your analysis. I will stick with ESP32 for now. Thank you for all your work.
You are welcome!
Will you stick with the ESP32 if your project needs to be power efficient? Or do you mean as a general board to play with?
@@jasondoller98751.
Hi Jason,
Thank you for your reply.
1. I need real-time communication. So for the moment I am using ESP32 with mqtt (more or less real-time). I have 2 HC-12 transceivers. When I get those working right I might shift over to a Teensy 4.1
2. I am running out of pins on the ESP32 NodeMCU S2. If I can off-load the motor control and sensors to a Xiao M0 with i2c then I will be ahead of the game.
@@phillipneal8194 Something to consider is getting an ESP32 CHIP and hooking it's serial comm lines to the Pico. You can then use the USB interface on the Pico to program the Pico and the ESP32 (will require a little work, not too much, to forward Pico serial comms to ESP), and then either program the Pico and the EPS32 to work together, OR slave the Pico to the ESP32 by telling it to accept certain commands via serial and do stuff, for example get the Pico to do the motor control, and manage it via serial from the ESP32.
I just picked up a couple of ESP32s and a couple of ESP-12Fs today for exactly that purpose - on my robot car, the ESPs will handle comms, display and LEDs, while the Pico handles motor control and sensors. In my case I've strapped a small cellphone battery pack to the rig which powers the pico, and the pico powers the ESP chips. I want to see if I can get away with the ESP-12Fs because of price, but when I need the extra GPIOs (and I eventually will) I'll use the ESP32.
The Xiao M0 is slightly more expensive than the pico based on website pricing, and ~50% more expensive landed in my country (ZA). The pico solution will be cheaper and give you significantly more IO ports, power management, AND is only ~50% bigger.
Very useful and interesting video. Thanks Andreas !
Glad you liked it!
Great comparison. Thank you!
Glad it was helpful!
Will you do a video on the Teensy 4.0? Seems like that is the one to go for if a lot of speed is needed.
for me in 99% of cases, peripherals like integrated radio and software support is way more important than just speed. Otherwise you know your software is inefficient and sucks.
@@flipschwipp6572 My use case would be huge matrices. Kalman filtering, particle filters. etc.
Maybe you watch my STM32 comparison video?
Thank you for the video. Have you never used a PSoC 5LP board such as the CY8CKIT-059? It seems very interesting also because of the very intuitive IDE.
I did not understand why you have only 310k subscriber only.I did not find any other youtuber who gives more valuable knowledge than you on wireless devices and embedded hardware design. Any way thank you so much sir for sharing your knowledge and experience in embedded system.
You are welcome! The subscribers are growing day by day ;-) But my topics are not mainstream.
That was the video i was waiting for. Thanks Andreas. I will also get one as soon as possible, meanwhile they are out of stock.
They will come back soon, I am sure.
Was waiting for this comparison, thank you Andreas. Will stick to ESP32 for now, they got very cheap. Also, when can we expect an update on the superpower project? Very interested in that.
As soon as we have the boards and tested them...
Can't wait for your review about risc-v and esp32-c3
2 weeks :-(
So now we have 300K people in the front row.
Congratulations! Love from India.
True. Thank you!
Thank you for your comprehensive comparing. Way2go!
My pleasure!
Thank you. Now I don't feel bad that I don't have the Pi Pico when I have ESP32!
(Will be ordering some when supply is much more available)
I think you're underestimating the usefulness of the PIO peripherals. They are designed to implement (along with DMA) high bandwidth and high-speed interfaces. These can include anything from I2S to DVI. There are interesting demo projects showing these off already, and I'm sure libraries making them useful to regular makers will be coming soon. There are a number of architecture details that aren't obvious from the high-level look at cores, clocks and peripherals that make this potentially interesting for more than it appears at first glance, and I'm excited to see what advanced makers do with it and later what libraries will enable for everyone else later on.
I hope I underestimate it and we will get lots of useful libraries. Otherwise they will probably not be used.
I've rematched now this great video Andreas and found one part I've missed somehow before! The assembler example.. that's insane! Never have seen it in use, thats amazing! Thanks as usual!
I'm looking forward to your stm32-s3 review, I could use it for self driving neural robot^^
You will be disappointed:-(
Excellent as always!
Thank you!
Do you know how something like the teensy 4.1 figures in all of this? I saw it has an ethernet controller on board and was seriously considering the implications ^^
I made Teensy benchmarks in my STM32 video... Different league.
@@AndreasSpiess I was more thinking in terms of usability. With ethernet on the teensy it's potential has just exploded.
@@Argosh How so? I was doing ethernet with the LPC1768 back in 2011/2012 with the very first mBed boards, before ARM bought the mBed brand.
Honestly, the NXP RT1011 is rather more interesting, at LQFP-80, with a 500Mhz Cortex-M7 instead of the 600Mhz variant on the BGA RT1062 on the Teensy4.x. Problem with BGAs is needing to x-ray them to be sure none of the balls bridged. That costs a little bit extra per board. Or, well, since you want ethernet, the RT1020 in LQFP-100.
Thank you for a concise review. Somehow you covered more ground in less time than 2 other CZcams reviews I watched on the Pico. I wish I hadn't wasted my time on those. Also, I appreciate your comment about the Pi foundation's "notional" pricing policies, notably on the Pi zero. It is a pet peeve of mine. List prices are typically only available through official distributors but only with a variety of unfavorable terms.
I love the Pi and it is great value for the price. A Linux system for 5$ is probably not possible for the moment. But I agree it sucks if you promise something you cannot deliver...
Great video, as usual. Thank you.
My pleasure!
Great, just asked for this and you delievered! Hope they do the IDE implementation soon.
So we are already two waiting for the IDE...
14:20 as someone that learned C++ as their first programming language, I had to LOL at that
After 2 hours of frustration making VS work with the Pico, I quit. MicroPython and Thonny are way too easy and life is too short.
I believe he was commenting on the SDK, not his C++ skills.
@@redleader7988 Exactly this. I know C++ pretty well, I've made programs on pc, but when it comes to finding a damned way to get C++ onto a micro, I just use Arduino. There's very little that I absolutely *can't* do using Arduino rather than raw C or C++ and some esoteric SDK/toolchain.
thanks for the comparison. one point: i really think the PIO lines are useful: as you can program them as I2S this makes up for the lack of I2S. also you can programm them as additional UART, PWM, I2C, SPI, ... i looked a bit into the documentation - it seems programming these lines is not as difficult and i am sure there will be soon alot of examples for even the most exoctic protocols. by feeding data directly via DMA into the output this should also give a good speed. so all in all this looks promissing. especially for the micropython: DMA and PIO can do all the heavy lifting and there even a slow python programm can then generate good performance. i am also wondering where the PI foundation wants to go with this. certainly it would not make sense to release just one processor. so it will be interesting to see where they take this...
Maybe you are right. I do not judge from the possibility, I usually judge from the problems.Time will tell which of my problems will be solved by the PIO.
BTW: in Python most time critical protocols anyway are written in C to gain speed.
Thanks for the video ❤️
You are welcome!
This video is exactly what I was looking for last week. A comparison between those exact controllers!
They were the obvious to compare...
@@AndreasSpiess the people who compared it to the arduino nano wouldn't say the same.
@@mjyanimations1062 Wait 2 more weeks the Arduino 2040 will be out ? same board?
Thanks for a interesting video.
It's always good to learn about new products on the marked.
Most of my projects include Bluetooth or WiFi, so personally I don't see much use for this board.
But it will be interesting to see what people make with it :)
I agree. Arduino will add an ESP32 Wi-Fi module to it. Maybe this is a good concept for stable WiFi?
Well done! Got MicroPython running on my Pico yesterday. Totally painless and moar boards is always better ;)
Agreed!
yes. I can always find an answer from your channel when I have a question. Thanks.
You are welcome!
excellent comparison
Thank you!
When I heard about the new Pi Pico, I immediately thought "When will the guy with a swiss accent will make a video about it ??" ^^
ASAP, of course...
10:00 neither ESP32 nor -S2 support SWD, unfortunately just JTAG
Yes, wanted to add the same!
You are right. I mixed it up!
Nice video as always!
Glad you enjoyed!
Thanks Andreas, nice and useful video.
You are welcome!
I don't see any advantage beside the lower power consumption.
I think it will be hard for any MCU chip to compete with the ESP32.
Agreed.
Contrary it is relatively easy. Tensilica Xtensa cores (used in ESP32) look great on paper but when you start scratching surface you will see that they miss many things, maybe that is reason why most of microcontroller manufacturers pick ARM cores instead of Tensilica even licence for Tensilica is in order of magnitude cheaper
It is nice for something to be made in Wales/Japan instead of China for a change - sustainable manufacturing! The availability from local suppliers is a great positive for me compared to Black Pill / ESP 32 where you have to wait for slow delivery times from PRC. I wonder if it could be the basis of a hobby grade USB osciloscope given its USB host and DMA support.
Agreed! Got mine and it's made in Japan
I agree, too. And now since Wales and Switzerland already have trade agreements we get the stuff hopefully cheaper ;-)
Nice video! Congrats. 👏👏👏
Thanks for the visit!
Very nice presentation Andreas!
I'll have to do some projects with this !
Go for it!
After all the hype it is great to see a fact-based review. Much appreciated. Micro-python is a non-starter for me. I will stick with C/C++
Yep! An interpreted language in a microcontroller is just daft.
I think Python will take its space in MCUs...
@@cr6925 It's not exactly an interpreted language. Some implementations are, others are not. From what I understand, Micropython embeds a compiler, which compiles the code into bytecode, and then every time the system is used, it's this bytecode that is used. It can still compile code on the fly (like for executing commands given in the REPL), but main usage is through pre-compilation. I believe you can even compile the code on your computer and just upload the byte-code if you prefer.
If you're good at C/C++ though, you will definitely have it running faster, and take advantage of the strong typing.
@@briceparent593 All far away from the ethos of a pure embedded microcontroller running dedicated compiled code with no overheads to serve one purpose. Still, I guess it gets the gawd awful Python language into "microcontrollers" as imagined by the Raspberry Pi foundation.... IMHO a very bad place to start from. Still, they're academics eh?
@@AndreasSpiess Hopefully no. It's not a place to start from when designing embedded systems.
The Pi Pico looks like a great way to move kids from the Scratch programing level across to python and electronics.
The Pi foundation has schools as their primary market.
Exactly. They're not investing in specs, instead bidding on marketing and reputation. It's like a strategy game where they aim to shoot down the collapsing empire of Arduino and acquire their massive territory in ease.
I just wanted to make a similar video.... couldn't get it yet due to backorder in India......All your videos are great and straight to the point.
Thank you!
Hope you enjoy your summer holiday 2022 with your wife and think about the Pico W and projects that might run with that in the autumn of this year.
I will wait till they support Arduino, I think...
Free comment to increase viewing related metrics.
Yes, but then again it is a reasonable expectation that sum commment that eh robot parser can't work out iz what will w0rk. Iff da machine can sea what ewe R up two, then it can ignore the comment.
I got my Rpi Pico boards for $4 bucks each. Shipping was a couple of bucks extra. -- Thanks, BTW for making the video. As always, I enjoy watching!
Glad you liked it. Mine was a little over 5$ (plus 8$ shipping)...
Andreas is the Swiss army knife of electronics and his brain is much sharper. Thank you for taking the time to help us all not wasting our money.
You are welcome!
Andreas,
I initially shared your feelings about the limitations of the Pico, until I listened to an Adafruit video where Limor Fried took the pedagogical approach of first criticizing the lackluster list of built-in interfaces, only a limited amount of ADC, I2C, SPI and a number of GPIOs. But then Limor got to the plot twist: how PIO enables you to softload a lot of these 'missing" interfaces into the PIO:
The clocked state machines of the PIO is essentially a very limited subset, but much easier to work with, of the flexibility to 'program' hardware that people usually turn to FPGAs to get(or their less expensive siblings CPLDs)
Limor recited a lot of hardware behavior that was already implemented as soft loaded state machines in PIO, that she in the previous part of the video stated was missing from the chip: PWM, I2S audio in/out, SPIF, VGA and DVI generation (look in the Pico/RP2040 hardware guide) UART rx/tx, sdcard driver, additional I2C and SPI channels.
These two repos list a lot of what was available when Pico launched
github.com/raspberrypi/pico-examples/tree/master/pio
github.com/raspberrypi/pico-extras/tree/master/src/rp2_common
Manchester encoding, hub75 led panels, st7789 lcd driver, some kind of logic analyser. Seems like you can program additional USB channels on the PIO as well, but I am not sure if that is already implemented in sdk, examples or extras.
I guess 3D printer builders, roboticists, and other motor control invested folks will want to use PIO state machines to get exact timings of everything from simple motor drivers to trinamic drivers.
I have no problems with the native IOs, I mentioned that the two lacking ones are exotic. If they can be enabled using PIO that is fine for me, but not too important.
We will see what useful we will get with the PIO. The ESP32, BTW has a similar (more primitive) functionality. Nobody even talked about it so far.
Maybe replacing additional specialized driver chips is a good use case.
Ah, finally. A video I didn't waited but I needed
:-)
Great and honest review!
Thank you!
i have a speedo meter works on encoder. encoder purse rate 0- 500 pulses per second on both channel A & B .my meter has 5% errror i wanted to feed this to micro controller and make 5% more pulses out put on both channel to compensate the error. (for examble if frequency 100 hz i need 105 hz output) could you please guide me
Analyze the problem and decide which part is a systematic error and which part is random. You only can compensate for systematic errors.
Very insightful. Subscribed
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