Tootfinder

Aw yeah, got some microcontrollers to play with this weekend. Here's hoping to figuring out what the hell I'm doing with them... #electronics

get tuned to last night's frow show on @…. one set of bright springtime flows followed by a 2-hour drift/melt, including new #jazz, weird #electronics, ivory coast grooves, CAN '77, g…

Figured I'd keep a running log of this whole badge project: #electronics

get tuned to last night's frow show on @…. one set of bright springtime flows followed by a 2-hour drift/melt, including new #jazz, weird #electronics, ivory coast grooves, CAN '77, g…

Updated Lorenz attractor analog computer circuit.
I tweaked the DC voltage offsets on the two multipliers and dialed up the memory depth of the oscilloscope. The image on the scope is much better now.
#electronics, #math,

The #ElectronicsGoesGreen conference #EGG24 starts tomorrow in Berlin
https://electronicsgoesgreen.org/progr<…

Electronics Goes Green - Program

The "Barduino" prototype boards came in, went ahead and got it soldered up and ready to go. Still haven't applied power to it or tried burning fuses, but I think it turned out awesome...it's adorable...lol #electronics #arduino

Updated Lorenz attractor analog computer circuit.
I tweaked the DC voltage offsets on the two multipliers and dialed up the memory depth of the oscilloscope. The image on the scope is much better now.
#electronics, #math,

I'm failing trying mitxela's trick of wrapping a wire around an ironbit for SMD soldering, any one got any ideas? This is a traditional 25W Antex iron it's wrapped on, but it's not getting hot enough on the wire, it boils off flux, melts low-melting point paste but doesn't do anything to existing components:
#electronics

Time for round 3 and see if the changes actually worked...also those LEDs are so very, very *smol*. #electronics

🎬 Is There Any Hope For Asynchronous Design?
#electronics

Is There Any Hope For Asynchronous Design?
This approach has long held promise, but never managed to deliver. Is there a fundamental problem, or is it just bad luck?

The #ElectronicsGoesGreen conference #EGG24 starts tomorrow in Berlin
https://electronicsgoesgreen.org/progr<…

Electronics Goes Green - Program

Trying... #electronics https://www.youtube.com/channel/UCQ8TV4UW37KKQCjqXXgRL_g

This is really cool- how to build a low cost Faraday cage, with the parts list and all new items. #electronics
https://esp32-open-mac.be/posts/0003-faraday-cage/

Things are looking pretty good. Got the `setPixel` and `loadImage` functions up and running, and both use a buffer to help out with writing to the LED matrix IC. Now I need to start work on loading stuff from the SD card and see if I can animate some stuff... #electronics #arduino

Next part of my dad's HiFi is trying to understand his home built amp; it needs a bit of a front clean but was working OK. It's dated 1977, but has obviously been tinkered with over time - the power transistors on the back are dated from early 70's before I was born, but then there's a little preamp in there from mid-90's; so I need to figure it out.
#electronics

🎬 Is There Any Hope For Asynchronous Design?
#electronics

Is There Any Hope For Asynchronous Design?
This approach has long held promise, but never managed to deliver. Is there a fundamental problem, or is it just bad luck?

So, I now have two working "prototypes": a rev 0.1 and a rev 0.2...and I have 351 bright amber LEDs. The schematic for this part of the badge is good, now it's time to write a library to turn pixels off and on. Adafruit has a library for the LED matrix IC, but it only supports RGB for some odd reason. However, first win of the project. #electronics

Alright, the second revision of the LED matrix comes in today so I've got a ton of LEDs to solder again. Hopefully the PCB fixes solve the issues I saw with the first version. #electronics

Final Circuits II lab at DMACC is done except for the write-up. Not the most complicated or interesting lab, but I'm really going to miss this.
#electronics, #oscilloscope

💡 Light-Emitting Diodes for Energy Harvesting
#led #electronics

Light-Emitting Diodes for Energy Harvesting
Energy harvesting is gaining substantial relevance in the realm of ultra-low-power electronics and Internet-of-Things devices with limited access to classic power sources. Several harvesting approaches are available, depending on the energy source; among them, photovoltaic devices benefit from the highest energy density. However, the inclusion of a dedicated photovoltaic cell in a low-power system may result in increased costs and complexity, thus hampering economic sustainability. Conversely, …

I think this is the "final" version of the throughhole Arduino. Changed the resistors to 1/4W, moved everything around a bit to make more room for the ICSP port. Should be fairly easy to solder and might not catch fire. #electronics #arduino

Final Circuits II lab at DMACC is done except for the write-up. Not the most complicated or interesting lab, but I'm really going to miss this.
#electronics, #oscilloscope

💡 Light-Emitting Diodes for Energy Harvesting
#led #electronics

Light-Emitting Diodes for Energy Harvesting
Energy harvesting is gaining substantial relevance in the realm of ultra-low-power electronics and Internet-of-Things devices with limited access to classic power sources. Several harvesting approaches are available, depending on the energy source; among them, photovoltaic devices benefit from the highest energy density. However, the inclusion of a dedicated photovoltaic cell in a low-power system may result in increased costs and complexity, thus hampering economic sustainability. Conversely, …

Found the last major issue in the previous "Barduino": other than the missing connections and such I also connected the ID pin of the USB connector to Vbus which isn't exactly a good idea. Very happy to have tracked it down, and the next version is out being made. #electronics

Alright, attempt number two. Simplified the layout a bit and came to a pretty obvious realization: don't mess with the layout *after* you run the design rules check. The boards came in and were a bit lacking in several areas of connectivity. #electronics #arduino

Dammit, the ATmega328s I ordered were the standard `P` version and not the `PB` version. So, just grabbed 25 ATmega328PB MCUs from Mouser and they should be in at the same time as the "Barduino" PCBs. #electronics

🌀 Wireless Charging for Electric Vehicles: A Survey and Comprehensive Guide
#electronics

Wireless Charging for Electric Vehicles: A Survey and Comprehensive Guide
This study compiles, reviews, and discusses the relevant history, present status, and growing trends in wireless electric vehicle charging. Various reported concepts, technologies, and available literature are discussed in this paper. The literature can be divided into two main groups: those that discuss the technical aspects and those that discuss the operations and systems involved in wireless electric vehicle charging systems. There may be an overlap of discussion in some studies. However, t…

Looks like there will be some fun here soon. The TQFP-32 to DIP-32 adapter came in, and the "Barduino" PCBs will be in tomorrow which this can slot into. Should be a busy day and hopefully I got the pinout of this adapter right...lol #electronics

Alright, more progress. I figured it would be "nifty" if you could use an SD card and just read off of it to display images on the LED matrix. However, I also wanted a fairly straightforward file format to do that. It needed to be sequentially read and very simple. Right now this is what I've got and I think it will get the job done. #electronics

Things I've learned so far while building my own ATmega328 "Arduino": having an Arduino Uno has been one of the most useful things I've owned. I've used it to test out the ATmega328P fuse burns/ICSP stuff and it's saved my sanity more than a few times. Right now, it's rocking `minicore` without issue and is letting me get a head-start on coding. #electronics…

Hrmm...seems like I solved the "soldered LEDs in backwards" problem and discovered a slightly bigger issue: I forgot to connect the thermal pad to ground which might explain the bigger issue of the LEDs not turning on. Everything else on the schematic and PCB layout looks good so it's time for version 0.2... #electronics

I do want to thank everyone who has helped out with this badge project. I haven't tried anything close to this before, but the feedback and rec's have been invaluable. #electronics

Boards came in, went ahead and soldered the first one. The Barduino was plugged in afterwards and didn't catch fire which I consider to be a huge plus. I'll give it an IPA bath and then try burning to bootloader and loading a sketch in later. #electronics #arduino

First successful-ish prototype done. Holy crap, I want to find anyone who made a DEFCON badge and shake their hands because this has been difficult. However, still need to get the LEDs that were swept off the PCB back *on* to the PCB, then solder the header on so I can begin testing. #electronics

📼 Fixing my Yamaha Electone ME-50: An FM Synthesizer Home Organ from 1986
#electronics

Fixing my Yamaha Electone ME-50: An FM Synthesizer Home Organ from 1986
The home organ is, at least in my home of North America, a dead market, mostly because synthesizers can do pretty much anything the old beasts could. Neverth...

Hrmm, good news is that the soldering went pretty well on the prototype. The bad news is that I managed to solder in 351 LEDs backwards...lmao #electronics

351 0402 LEDs arranged/oriented, 50 0402 resistors, 10 0402 capacitors...mixed the solder paste and have some of it "warming up"...stencil jig almost setup...it's getting time to solder some stuff. #electronics

So, couldn't find the 9V adapter to charge the label maker (or absolutely any 9V adapters), so I sacrificed one of the dozen 12V adapters, hooked it up to the bench PSU, and now I've got one heluva overkill adapter. #electronics

Okay, the first take of the "Barduino". This should be very flexible and let me test if the schematic works...also most certainly a prototype. #electronics #arduino #atmel

I think I've found all the major issues with the schematic, now it's time to get the PCB done. Very happy I went over it a few more times as I realized I had used the pinout for the ATmega328P instead of the ATmega328PB. Also missed the pull-up resistor on the RESET line. However, things should be good to go. #electronics

Got an interactive BOM saved, next steps are to start posting stuff to the internet on how to assemble, how to get it running, and anything schematic/PCB related. #electronics

The hopefully final version of the Barduino. I really wanted to keep it as through-hole as possible, so everything except for the ATmega328PB, the FTDI IC, and the USB connector are through hole. Pretty happy with how it turned out, now it's time to get the boards ordered and make sure everything works...then order a bunch more...lol #electronics

We have a total success: able to upload sketches from the Arduino IDE to the breadboard ATMEGA328P running `minicore`. Fuses were set correctly, and absolutely no issues whatsoever after fixing the whole programming/burn issue. #arduino #electronics

We have a total success: able to upload sketches from the Arduino IDE to the breadboard ATMEGA328P running `minicore`. Fuses were set correctly, and absolutely no issues whatsoever after fixing the whole programming/burn issue. #arduino #electronics

I'm so proud, finally got an ATMEGA328P bootloaded, uploaded a sketch to it, and it worked perfectly. Unfortunately, it required me to toss it into an Arduino Uno Rev3 to get the bootloader correctly installed. However, it's a start. #electronics #atmel

I'm so proud, finally got an ATMEGA328P bootloaded, uploaded a sketch to it, and it worked perfectly. Unfortunately, it required me to toss it into an Arduino Uno Rev3 to get the bootloader correctly installed. However, it's a start. #electronics #atmel

So, it's time to make my first in-house Arduino. If I can get this thing configured, burn the bootloader/fuses, and then upload a sketch to this thing then I'm going to be one of the happiest people in the world. #electronics #arduino

So, it's time to make my first in-house Arduino. If I can get this thing configured, burn the bootloader/fuses, and then upload a sketch to this thing then I'm going to be one of the happiest people in the world. #electronics #arduino

Yay, got the solder paste ordered. Definitely not one of the things I want to order off of Amazon. Tracked down a good distributor, grabbed a jar of Kester HM531, and now I just wait for everything to come in. #electronics

Yay, got the solder paste ordered. Definitely not one of the things I want to order off of Amazon. Tracked down a good distributor, grabbed a jar of Kester HM531, and now I just wait for everything to come in. #electronics

Okay, this should be good enough to get things done. The file format supports monochrome and 8-bit RGB data along with static and animated images and should be fairly easy to read off of an SDcard connencted to the Arduino. Pretty happy with the result, but now I need to figure out how to properly document all of this... #programming