you make me blush :) I just had another idea while listening to this episode: the zcheduler will be the one running the dijkstra, right? so it will be in charge to calculate pathes for each and every zoomie requesting a path. now imagine the following: after calculating one "shortest" (best) path for a zoomie it increases the weight for all edges used in this path a little bit --> it gets more likely that the next zoomie would not use the same roads. The more zoomies use the same road, the more likely the next path will pick another road. --> avoiding traffic jams by spreading the traffic. of course you have to decrease the weight by same little amount when a zoomie has reached it's destination ... hope you enjoyed your pizza tonight! tomorrow we have friends over at our house and we'll be making a whole [put right word for those steel plates of the oven here, how do you call them?] of pizza with lots of toppings ... my mouth is watering just by thinking of it ^^

Your SPF would probably best be weighted by travel -time over the segment, that way your bypass will be quicker because of fewer junctions .

SPF (Shortest Path First) is used in network routing, which takes in the "cost" of all potential route to find the most efficient path directing traffic. Not only does it avoid congestion along any one path, if there's a break on the network, the algorithm can make quick rerouting accordingly. I imagine you could one day make the algorithm respond should a Zoomie fall over and cause a road block.

I wish i could get the pico scroll working with C code. having a hell of a time compiling it without errors.

Hi Chris. I adapted your program to drive a dual 7 segment LED display and then included code from another demo that writes both numerals and possible alphas. It worked well after debugging "fat fingers". I then added a second MCP chip to drive a second dual 7 segment display. I had issues with the second MCP causing various errors which were not consistent. Even when I disconnected the first chip. After a lot of research I came across an article on a Python user group that recommended using pull up resistors on the I2C lines. I used 10K pull ups and the issues were solved. Its all working now once I remembered to use "global" in my MCP select function. Any further videos on the MCP chip? Thanks for an interesting channel.

I have another method I use. I bought a cheap USB dongle, with 4 USB ports, each with their own power switch. You can plug in the pico to any port and leave the switch turned off.

Instead of using pneumatics you can use a solenoid and a spring , it simple less parts and cheaper

Try electrical tape to build up the cable diameter then use the heatsrink

hello again Chris. I am into pico programming as well but I also have a 50+ yr history in electronics so I know what you are talking about. A few years ago when I started with the pico designs and breadboarding I also did not separate the Power supply for the breadboard and the laptop USB power. Luckily, I did not run into a problem but it was constantly on my mind and bugging me. So, on the Pico website (in the pico documentation) they address this with the jFET solution. So I designed a small circuit board to handle this, had it made in China by JLCPCB and it works (and looks) great (for those with a passion for PCB 'art') There's my questionable sanity again. I am somewhat embarrassed to say, your solution did not even occur to me at all. It makes perfect sense and is actually quite an elegant approach. I thank you for sharing that idea and I will certainly take advantage of this method moving forward. I generally design test equipment and vintage amplifier restore/modifications in which I at times use a Pico. In such instances I will simply not connect the USB power line in the project case to the Jack on the back of the enclosure being used but for development/breadboarding purposes I will do a cable cut as you have shown. It will be considerable less work than putting hundreds of new Dupont ends on my jumper cables I mentioned on a previous video of yours. Thanks again. Regards to all. 🇨🇦

nice video - will try this at a later date

great build !!! great video with lot of information . At 7:24 this tip help me , finally , a lot.. 😊Now my holes are dead center! I started to build a same drill press with SBR12 rails and i had an issue of alignment the rails .as you said in the video at 28:40 i follow the same procedure and "voila" 😊.Thank you for sharing your knowledge !!!🎆🎆🎆

Anyone who puts their name in their channel, and SAYS IT IN THE BEGIN OF VIDEO, FUCKIN CUNT.... DO NOT MAKE ANOTHER VIDEO

New music ^^

Great class. Thanks

Many years ago while I was learning to program an Intel 8085 in assembly code, One day, I finally learned how to create an Interrupt with a timer. It was an Erika moment. It seemed so many jobs back then needed precise timing. and I was having no fun creating timing loops. Once I could create a 10 mSec timer interrupt, I could time anything very nicely. That day, I told myself that I could now control anything. And, it turned out true. Learn these timer, interrupt operations and you will put these pico controllers into a whole new world of control. Thanks Chris for sharing!

You've made a lot of progress, you've got a little more, I can't wait to see the city at rush hour. :). Thank you you are the best.

Thank you Sir for this great project, your channel should be much bigger, I, like you , am a tinkerer, maker, with a love for radio, so this project hits all the spots 😊

Just wanted to say thanx for posting this vid. I bought the crimpers you highlighted, and they work really well. Well made for sure. They fall under the brand name of iCrimp, but the part number is still the same. This whole time I was meticulously soldering the pins, not knowing how to actually use the crimp tool. Now my RC Tank hobby is much more enjoyable and the Dupont connectors are way more reliable. Thanx again kind sir.

Just found your channel. Looks very interesting with many projects to keep me in the workshop. Thanks Dave.

kzbin.info/www/bejne/fqfEq42DlM1mjq8feature=shared&t=250 "Sometimes it's a little tricky getting it ..." Double click on the line number rather than single click.

i recently bought a few crimping sets and i too had this experience, the jaws were very sharp and felt like they made really nice crimps. was a different brand but they looked a very similar

Just ordered mine. Absolutely have struggled endlessly with these connections when they crop up at work, hope your recommendation helps aleviate some of that trouble!

Hi Chris. A couple years ago I went through the same process working with Dupont connectors. You are correct, it takes a bit of practice but I didn't really mess up too many. I do a lot of breadboard design work and I found the cheap ready made jumper sets were very 'iffy' and so many problems with my designs was due to the pre-made wires. Most are molded not crimped ends and they usually have round ends and slightly thinner pin diameter. In fact I had so many problems I decided to get a crimper, similar to your iwiss brand and bought a ton of mostly male pins and housings. Then I actually cut off and replaced ALL the ends on my pre-made cables (hundreds of them). I'm sure some will say my sanity is questionable and they may be partially correct. However, I wasted so much time and energy trying to troubleshoot problems that ended up being poor connections of the pre-made wires that it was worth it. Needless to say I got a lot of experience with the crimper tool & process and that is always good. I also tried soldering some of those pre-made cables in a few instances and found an interesting fact. Many (most) of the wires from the pre-made sets could not be soldered! Turns out they were not actually copper wire inside. I assume they were aluminum but actually looked like copper color. I actually measured the resistance of the pre-made 'aluminum' cables with a crimped cable I made from different wire (copper) and the aluminum was measurably higher resistance in every case. The reality is the difference would have made no functional impact but it was interesting to see. Well I rambled long enough. My summary is YES the crimper tools are excellent (yours & mine anyway) but the ready made jumper sets can be dubious quality. This can be improved by crimping your own ends on them instead but, it's a lot of work. If you're new to breadboarding and have a problem especially inconsistent results, try replacing the cable(s). Regards to all - happy breadboarding. 😁🇨🇦

What's a good resource for learning Python on Thonny?

Excellent videos, Chris. Please tell me how you increased the icon size at the top without increasing the editor font size. I had to change the UI scaling factor to 2.5 to boost the icon size, but then the font got gigantic. Thank you.

Great explanation and video. Thanks Chris!

Hi, how to read bi-polar range of analog input voltage? Unless it's a temperature sensor, most of the real-world sensor output range from negative to positive voltage.

Hi Chris, I am following the series with great interest. The sprites seem to be a useful mechanism, I look forward to later episodes. One thing I have wondered about is a global parameter to tell the Zoomies whether they are left or right handed. Would make things easier for those of us who drive on the left hand land to visualise the system. Would this have impacts on the Zoomie world eg the placement of the magnets etc? Your thoughts. Peter

Hi Chris, your blockers have the same basic function as traffic lights. Why not just add traffic signal logic to each junction ( many of them here have stationary vehicle detectors so the lights stay green most of the time)

Re: your "safe" right turns. Are you sure the zoomie behind the turning one will be able to see it at an angle? If not, perhaps add a cornerhcube reflector to the rear of each zoomie .

Hi Chris, thanks for the information. Just curious, why are you using SCL (Pin 10) from I2C1 and SDA (Pin 11) from I2C0?

Great tutorial

There's an issue with the Pico 2 and the GPIO Pins. DO NOT BUY at this time!

Just create a location class instanciate one of eac location then add or pop the class into and out of a in_use / unoccupied lists or classes , once you've popped a location out of the unoccupied list the random generator can pick one of the location objects, read its location.address and program a travel plan to suit.

I'm a beginner in electronics, and I'm trying to understand where the value 0.00005 comes from in the code for converting the ADC reading to voltage on the Raspberry Pi Pico. The calibration offset is 550mV, and I calculated the step size as 3.3V/4096 = 0.000805 and can be rounded off as 0.0008, but I still don't understand how that specific value 0.00005 was derived. Please correct me if I'm wrong and clarify this for me.

That’s slicker than snot

Great stuff 😊

Thanks for sharing this information. Very informative. What type of wood is best for the beginner?

i am having difficulty in reading the data i used the same code and same hardware my reading are in range of 0.1-0.3 degrees Celsius please help Chris

Instead of doing a re-saw, use the table saw

Great video!, How much data can you store with this configuration?

Hi Chris, you are surely living the dream now. 😊

Question: (I am a beginner when it comes to this stuff so bare with me if my question has a super simple answer.) If the switch you used is rated for 10A 660V how were you able to power the switch through the pico? Was it simply because the Switch only needed the Volts and Amps needed to power the LED? I thought the component has to match the out voltage of the controller? If so, does this mean I can buy a 16v switch and use it as long as the application I plan to use it with doesn't output more than 5V?

Hi Chris, my script starts with "from machine import Pin, Timer". When I try to debug, the first thing Ï get is an error: "machine not found". My Pico is engaged. What can I do? Regards, Rob

Do you have a link to the fans? Im interested in getting an inline fan that can work safely with solvents. Do these fans work ok with these paints and their flammability? Thanks for the video and love the filter magnets. Im going to utilise that with my filter changes. I plan to use extra inkine filters to remove the smell. Thanks again

Hey! Thats brilliant! Thanks for sharing 👍

I'm located in Westchester IL, my company would love some help in converting our avid machines to closed loop steppers if you had time!

Amazing!!!!! I am blown away

That's Awesome

how do you permenantly attach the z-axis probe crocodile to the spindle please??