DIY Arduino Schematic in KiCad | AddOhms #23
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- เผยแพร่เมื่อ 16 ม.ค. 2018
- Add a DIY Arduino to your project with this schematic tutorial. The Bald Engineer starts with a blank sheet and draws in the critical components needed for a custom 8-bit Arduino-like board.
For more details, data sheets, and downloads visit:
www.addohms.com/diy-arduino-sc...
Download the schematic:
github.com/baldengineer/addoh...
Want to ask questions directly? I have a forum:
discuss.addohms.com/
These videos are produced by James Lewis:
baldengineer.com/
#arduino #schematic #kicad - วิทยาศาสตร์และเทคโนโลยี
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Triac I stayed because im a kindergarten tech and your filling in the holes of how this whole thing fits together.
Thanks James
I made my DIY board reacently and I wish I had seen your video before, as it took me ages to find out what was really neaded and why. Thank you!
The timing of this video is epic - thanks for the tutorial, and using Kicad.
Inductor. Great video. My kids are just starting with electronics and I will be using your videos in their education. Thanks for sharing your knowledge.
Zener my favorite diode. Enjoy your videos and learn a lot. Thanks for doing what you do!
The resistor is the beginning of everything. Nice last second fixup there.
Transistor. Great video! I am looking forward to the rest of the series.
Follow up.
th-cam.com/video/mY8NE3OuPfM/w-d-xo.html
Didn't understand about 80% of this but I'm also not an electrical engineer, still watched it to the end. This is fucking amazing.
Polyfuse for the WIN! Thanks for this series. I had just given up on trying to design an atmel based board because a generic nano can be sourced so cheap. Since you're providing some guidance, I may just revisit that idea.
Comparator. This video was very helpful. Thank you!
looking forward to the de-coupling video :)
IGBT - Insulated Gate Bipolar Transistor. Learnt about it in school, finally found a use for it :D
Gas Discharge Tube. Phew. That's a relieve. It is finally out. Thanks for your video(s)!
Hi, you do a great job, excellent explanation of semiconductors.
Learned so much from this video, thanks!
Looking forward to the power management video
Also, what is a good recommended tool to design PCB (more especially: for proto PCB board)?
Coz: LCD screen.
wow. Very in depth yet concise. subscribe!
Led! Thanks for your video.
Thanks for explaining why the resister is placed before the Diode to keep it dim
Great video!
I stayed to the end (capacitor is my choice).
Love your style, and content.
Thanks buddy, I love design videos.
thanks for video. It helped me a lot. great and simple explanation
Thyristor! Great episode!
Ferrite Bead. Awesome Video!
Capacitor. Great episode
Who would not stay to the end, so much incredible information, you might miss something diode
So clear ,good info , thanks
Thank you for the explanation, helped a lot. Transistor.
I stuck around because I guess I'm in the habit of looking at the timeline before I leave. I'm curious if the a video has leftover junk or blank space if there's still time left.
Now my vote for a part is the neopixel RGB LED. I have two bulbs on my project pcb to program whatever way I want. It's handy to have the bulbs and not need drivers.
I was LED here by a Google search... Good stuff, so I subscribed.
I'm more of a LM317 person. You know, the classic TO-220 variety. I should really figure out my power requirements *before* soldering...
Diode, excellent video, keep it up!!!
I love KiCAD, D for Diode, plus with FreeCad my projects can be drawn with the imported circuit board.
Yes, I stayed to the end I am a fuse always on Guard unless I pop out!!
Capacitor never cease to amaze me!
Btw i'm from the future, where is the videos you have promised?
DPDT switch
Looking forward to PCB video. Thanks
MOSFET !... Waiting for the release of next video about decoupling and filtering role of capacitor .
I appreciate it. It has a good closed caption. We can share your channel for all world if you put closed caption in every video. Thank you for your support.
LED Good video - all the way to the end!
Talking about programming, can we make a programming jig or what _cheaply_ to "mass produce" these stuff? I've seen some stuff on youtube for esp8266, but more idea is always better, and that would be a good excuse to make one in the pcb layout video :D
*MOSFET* is okay to be used here? ;)
Great video. I'd love if you could make a similar one with a ESP-12 module and it's supporting circuitry.
Cool idea. I have a pile of ESP12s that I intended to design into a PCB. Just haven't gotten around to it yet.
Excellent. Most of the ESP boards out there are made for development and have all the pins broken out. I'd rather have something more space-constrained so just the ESP-12 module seems like a great base. Then I can add my own application circuitry on top of that.
tagconnect - my favorite method for programming a board using pad/nails
Photocell
Great Professional , good job
SED (smoke emitting diode)
That reminds me of LECs. Light Emitting Capacitors. Like a SED, they only work once.
The DED (dark emitting diode) however, will function indefinitely.
great video, Hedy Lamarr would of loved this technology for her frequency hopping... thanks...:)
She was an amazing person that does not get enough credit for her engineering accomplishments.
Diode trick is definetely the best :-)
I've got to resistor the urge to put a pun in here!
Got to be the SCR. Great video, even if it is fast in places.
Resistor :3 thanks for great vids!
Optocoupler Awesome vid man.
CMOS love your channel
Thyristor. Cool video.
Hey BaldEngineer, I just saw some of your videos and i like your methods of explaining stuff. Any way you can pull up the arduino uno rev3 schematic and help us go through it all? Like circuit analysis of the schematic. I feel like it would help me and others quite a bit.
th-cam.com/video/VfkSzvXPYak/w-d-xo.html
@@AddOhms wow you got that two lol. Thanks for your service
I was hoping for more on KiCAD but hey - nice vid - thanks. Oh yes, PChannel Mosfet...
great tutorial
AMP very good, keep posting
IC your point :) Great video!
Photodiode :) keep the good job , my best regards.
cool vídeo.
and the diode was a good idea
J- Fet ;-)
Nice polished video again. But I also liked your live streams very much.
Thank you for the feedback on the live stream. I'll be doing at least 1 month. I was going to this weekend but decided to work on the PCB video instead. I'll do a stream after that one is done.
BJT. Nice video. I like it.
Diode
Great content!! Well done
Can I use Eagle for this tutorial series with reason or am I really best installing Ki-cad?
Sure. It was meant to show the process. That said, I can’t think of a single reason to suggest EAGLE over KiCad.
Electron. Ok, it is not a real component, but it is there everywhere :-)
I'm trying to move from Eagle to Kicad, but in my mac i don't found the button with i can move around in the schematic.
I think it's the right click on window, but how i can do this on mac? Thx
If you're on a MacBook you can enable touchpad panning in KiCad's preferences. Then it pans around with two fingers. My preference, though, is to use an external mouse and enable "middle button to pan." This option is very helpful when using pcbnew since the OpenGL renderer disables the scroll bars.
Great video. My keyword would be "kickback Diode" ...
Let's add an inductor. I really like your approach to teaching Keep up the good work. This is all good information for checking whether my understanding is correct, as well as practical how-to info for learning new stuff i might not completely understand, My short-term memory requires relentless review to make things stick. AB1VL Chuck
What's the frequency of the Quartz Oscillator that you're using?
16 MHz
how well do OpAmp or 555 timer oscillators do at driving clocks for MCUs?
Depends on if you need stability. An asynchronous bus like UART won’t work well, except maybe at very low speeds. In terms of cost and size, a ceramic resonator is a far better option.
0:43 Yeah, I love KiCad. :)
Polyfuse! Now, the schematic doesn't open correctly for me, 4.0.7 says it's created in a newer version, so guess nightly builds were used, open in nightly build and none of the schematic symbols are there, just boxes with question marks...Anyone else having issues? I thought KiCad saved the symbols to the schematic itself.
Yes, nightly builds were used. I tried opening on another computer, and also had the boxes issue. Briefly looking into it, the parts cache is handled differently in the nightly builds, which is probably the source of the problem. Give me a couple of days. I’m going to re-draw it anyway, so I’ll roll back to the stable release for that. (There’s other changes I want to make, so I was planning to post an updated version along side the as-shot version.)
Condenser .... oops I meant Capacitor, same difference right?
I say MOSFET. Thank you for a great channel.
What about my favourite part: SCG (Short Circuit Generator)
Diode doggy dog! I'm liking your content very much
I Love transistors
Hi, I really like these videos and it is a bit sad that you stopped making them (or it at least seems like you stopped...).
Ah... and for component - NE555 IC.
The past year, I've been doing 3 livestreams a week at twitch.tv/baldengineer. And since my last AddOhms episode, I've been making videos for element14 Presents: bald.ee/wbw-yt. That said, AddOhms will return soon.
Never heard oh Kicad before. I’ve only used diptrace. What’s wrong with kicad? I just now quickly looked at the web site, seems ok. But based on the keyboard blowing up bit, I get the impression most people don’t like it.
The EDA software you use invokes as much emotion as which micro controller family you use.
Well, people just need to not be so easily offended by every little thing. I see nothing wrong with just using what works for the task at hand.
Inductor. Worst enemy in high speed design is the -> inductance.
Ferris Bueller taught me to stick around beyond the closing credits. You might say it was a "transformertive" moment.
Mosfets, great episode.
Great presentation! _Desktop PC decoupling cap question: Would adding a parallel low value (ceramic?) cap help bypass (heat producing?) HF spikes via its lower equiv resistance to extend the life of my PC's new MOBO electrolytics, before they heat up, puff up and leak again?_ lol, Yes, stay'd with you 'till the very end (listening for mic audio source selection changes...). *Forgotten component?: Just CUT A TRACE and install a circuit KLUDGE or two to hold in all of the MAGIC SMOKE.*
No, that wouldn't help. It's the high ripple current through the electrolytic's high ESR that generates the heat. That's actually at a relatively low frequency. The best alternative is to buy solid polymer aluminum electrolytics. These use a conductive polymer to replace the traditional electrolyte. They don't wear out nearly as fast, and their ESR is an order of magnitude lower. Lower ESR means less heat, less heat means longer life (on a part that will already have a long life.)
When purchasing them, stick to tier 1 capacitor suppliers: Nicchicon, Panasonic, etc. They'll cost a little more, but they'll last much longer.
Here's a video I did for my old company on Aluminum Polymers: th-cam.com/video/DeCpcXHn5BA/w-d-xo.html
Is that cap-cooking ripple coming from the PC's (crappy) switching PS, or from MOBO data/CPU LOAD noise introduced back onto the 5v and 12v lines?
In theory, it'd be the load's ripple. But in practice, a combination of both.
You roll like a freewheeling diode!
Inductor. Great episode.
Not only do I like diodes I also like Light Emitting Diodes! Yes I watched to the end. This is a very good video. I just found an EDA program called Easy EDA, it is a browser based schematic capture and layout program. Are you familiar wit it? I am not familiar with the program you used. Rick
KiCad is a fully open source EDA toolset. You can find more information about it at kicad-pcb.org.
Air. My favorite insulator
Good insulator, lousy dielectric.
I like how your channel icon has the traditional zigzag symbols for resistors, rather than the rectangular box symbol. That's the resistor symbol I grew up with! (And yes, I stuck around to the end.)
I'm all for internationalization and metric and blah blah blah. But ZigZag resistors are the way to go if you ask me.
absolutely
OLED (or diode). I'd like to see a custom Arduino board the same size as 1.3" or .96" OLED boards that you can get from china.
Photovoltaic MOSFET Driver lol 👍
I love capacitors
At first I was like eh, I probably already know all the stuff (very fluent in Eagle), but when you mentioned you were going to use KiCad, I was intrigued :D
Flux Capacitor ;)
SCR, baby!
I'm leaving a comment about the NC reset switch that will permanently keep the processor in a reset state. Maybe you should swap it with a NO switch and make sure the pull up resistor is on the processor pin side of the switch.
Guess you didn't read the note on the screen or watch the very end: th-cam.com/video/5fvdxd0QhTw/w-d-xo.html
AddOhms oh, nope I was only listening at the end. ☺️
I think your explanation of the boot loader reset circuit might be incorrect. When DTR is high, you will have a positive voltage on both sides of the capacitor which means RESET will be high. With 5V on boths sides of the capacitor, it will be in a discharged state. When DTR goes low you have a voltage potential across the capacitor. Since the capacitor is in a discharged state, it acts like a short as it charges and draws current through the pull up resistor. The current draw causes a voltage drop to develop across the resistor temporarily pulling the RESET line low. Once the capacitor charges it can no longer draw current and the voltage drop across the resistor diminishes because the current flow has diminished and RESET moves back high. When DTR goes high again, the capacitor is changed to a discharged state so it is setup so it can act like a short again should DTR go low.
Diode, nice video!
vacuum variable
Optoisolator! :D
Can you use a 555 for a clock?
You can use almost anything as a clock. You need to determine how much accuracy or precision you need. A 555 circuit close to an RC oscillator in performance. I’d rather use the internal oscillator than an external 555.