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Posts tagged with :hardware:

Charlie
@Charlie0
my sprig's screen broke in the move :'-( what's a girl to do? answer: some really stupid #sprig-hax! i had an LCD in stock that was the same size and used the same driver...but with a different pinout (unhelpfully using 2 fewer pins than the original) a little bit of hole-drilling and trick-rodeo soldering later, everything is back up and running!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/bcf38421-61b2-41de-9244-213b0e50354c-pxl_20240514_030328056.jpghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/d2e1928b-fe8e-4a85-a12f-f28d78846a4e-pxl_20240514_030315639.jpg
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Kieran
@Kieran0
Finally working on the control board for my led cube; severely underestimating how much of a pain soldering would be but now I only have 24 more wires left :)
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awdev
@awdev0
I'm using Arduino IDE to debug some steering stuff for self driving RC car. LOOK AT THIS POTENTIOMETER GRAPH OOOOOOOOH BABY
https://scrapbook-into-the-redwoods.s3.amazonaws.com/338d5422-5a9e-49db-b5af-c8d4c0dce623-image.png
jpt1729
@jpt17290
Learning how to build PCBs!
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Element-XP
@Element-XP0
I made my first electronic without a tutorial!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/35057060-5e40-4c0b-a1d4-23c06c096ac4-img_1676.jpg
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awdev
@awdev0
Got my buck converters working! Voltage adjustments are in place. This is a 4S 3Ah LiPo with an XT60 connector. It connects the buck converters in parallel, meaning they don't have any voltage diminishment and extra current draw on one bus doesn't affect the other device. 12 volts from the buck converters is going to the H-bridge motor driver and 5 volts is going to the Arduino Mega (not pictured). Hope you guys like it!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/8a515bd3-62c7-4ed3-8f12-962bd21276b0-1000006535.jpg
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AriMastor
@AriMastor0
5 months into this project and it's finally finished! This is a gadget geocache for my local maker space. Custom PCB (funded by Onboard) interfaced with an Arduino for controlling LEDs in the eyes, giving instructions on how to solve the puzzle through the speaker, checking the password entered, and controlling a solenoid to open the hatch on the bottom when the puzzle is solved. Hand crank on the side turns a geared stepper motor to charge supercapacitors that provide enough power to last a few minutes so nobody has to worry about charging or replacing batteries. The whole thing is covered in epoxy for weatherproofing. Hopefully, it will be up and running in a week or so!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/da446ff5-2d44-4d97-9cfc-d9790ae59442-img_1789.jpghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/04f76193-1e55-4088-acbb-5a892ebed11f-img_1785.jpghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/2d2b9248-4e3c-47db-8977-1d11200b9cb4-img_1784.jpg
sahitid
@sahitid0
:kitty-dance: 🌸 *days of service ship incoming:* :kitty-dance: 🌸 Blossom 🌸 was held in Atlanta, Georgia from March 15-16th. working closely with the Girl Scouts of Greater Atlanta :girl-scouts:, i had the privilege of organizing a day-long event that brought together a team of high school female mentors and dozens of eager girl scouts. beginner girl scouts embarked on exciting journeys - from crafting their own PCB :pcb: keychains that they later had manufactured through #onboard to delving into an introduction of javascript :js: to code drawings on #blot the drawing robot. every girl went home with a unique new hardware or software project that they 100% created themselves, but most importantly, the confidence needed to pursue coding further :blobheart:. we also had a brilliant dinner (with ricotta balls :blobby-doughnut:) the night before with 28+ women in technology and STEM who guided us with their stories and experiences in their fields. all the high school mentors and i were fueled for the day ahead of us by the end of the night:half-salute:. it was so motivating to see girls who had never touched code before leaving the event with the confidence that they had a place in the world of technology & finished projects that they could show off. 🔗 website: blossom.hackclub.com :githubparrot: github repo: github.com/hackclub/blossom 📷 day of service photos: drive.google.com/drive/folders/1-XnTK7QPwufdo4flwsF7syqOoZwB0z6C?usp=sharing 🥂 women in STEM dinner photos: drive.google.com/drive/folders/1-WR0RY4SCYAOzAD3T-Z6aT0_DYBsNGgj?usp=sharing thank you to @MariannaLudensky @NilaRam @christina695 &amp; the whole <!subteam^S06A2EGQ29M|@blossom-team> for the wonderful event we pulled off, hopefully inspiring many girls along with each other through the process.
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Averse
@Averse0
made(some) more progress on AdventureBox
https://scrapbook-into-the-redwoods.s3.amazonaws.com/aabfac1f-8ea5-42aa-81bd-6c7fa17db462-image.png
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Averse
@Averse0
working on this RP2040-based text adventure microcontroller that is still a WIP(worked on this for #hack-hour)
https://scrapbook-into-the-redwoods.s3.amazonaws.com/0b79e736-d3bb-443b-93e2-b544b1e1fe3b-image.png
RyanDiLorenzo-U04JGJN2B40
@RyanDiLorenzo-U04JGJN2B400
My cat's automatic litter box recently stopped working and it's around 300$ for a replacement which we were thinking of doing. I thought I could take a look at it and see if I could try to fix it. I initially thought the motherboard traces were corroded and not making contact so I tried to reflow the solder but no luck. The motherboard and microcontroller pre-installed had no documentation or help guides other than contacting the company to buy a replacement. I decided to try if I can use a Wemos D1 Mini ESP8266 microcontroller to control it, and after many hours (6) later I present to you a polarity switching circuit using 3 SPDT relays, a step-down buck converter to convert the 18V power from the built-in power on the cat litter to 12V the relays could use. Then after a lot of trial and error I found the perfect transistor (2N2222) in my transistor kit to convert the 3.3v logic levels from the ESP8266 to the 12v or something that the relays can use. Some of my trouble could be avoided if I used the correct DPDT relay modules meant for this, but this is all I had on hand. It's not quite finished since I still need to hook up the 2 sensors and 2 end stops to make it safe of course, but it's coming along and now the hard part is down. In the end, I'm going to open source a schematic design and order a PCB to contain everything.
https://scrapbook-into-the-redwoods.s3.amazonaws.com/c63630ae-8a1f-4ebd-887d-dbac2e06c161-img_1871.jpghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/408057ff-4ea9-4133-aa42-73f6f7aa6b0e-img_1870.jpg
Leo
@Leo0
I'm a bit confused now. I don't know how to make the stack advance, and then go back if it's reading. I need to figure out bi directional shift registers I think. This is what I have so far
https://scrapbook-into-the-redwoods.s3.amazonaws.com/e0f4fcbc-dacb-414d-be68-1ad979cfd220-stack_proto_.png
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Leo
@Leo0
Now I have everything I need to start making the stack!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/b2147ed6-f5f0-4fa1-8913-002d1ad0cee3-4_bit_comp___with_math_core__wip__1_.png
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karmanyaahm
@karmanyaahm1
it should be illegal to remap ctrl+f to something else (in this case flip layers) when find is actually a meaningful function here
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matthew
@matthew0
Passport-based door opener
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karmanyaahm
@karmanyaahm1
LCSC order for Chessbot came in!!!!!!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/6c0a6cf1-b505-40d5-abfc-1a3c0c2fd6de-pxl_20240308_180934660.jpg
Aram
@Aram0
🚢 ANOTHER WEBSITE SHIP 🚢 I shipped 3 new pages for my website! The first one is a photos page, it pulls automatically from my Flickr for the photos and uses static images as fallback. The second one is a blog, it uses markdown files and tailwind typography for rendering them nicely! The third one is super simple but its a stack page, It includes the tools I use. Hardware and software! The website is written in :nextjs: Next.js and :tailwind: Tailwind CSS. It's all open source! ⭐ it on GitHub and live on aram.sh
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dav
@dav0
Day 7 of #10-days-in-public Implemented all the fixes I mentioned yesterday. Unlike yesterday, the game is actually stable, so I can jump around like a monkey. Spent around 30 minutes wondering, "why does my variable keep magically changing." "Ah! It must be UB or a memory violation" (unspoken words of a rust programmer). Long story short, it was because I set a variable as true when it should have been false :peefest:.Tomorrow there are two big features I've been putting off since day 1. Sound: trowel doesn't support sound, and although I gave it a crack on day 4, I made no progress. Optimization (which will be my next main focus): I can jump around smoothly, but not on hardware. This will involve trimming out floating point numbers (which aren't natively supported on RP2040), caching/reusing rendering data, and some screen drawing optimizations suggested on the trowel github. Another black magic option is to try out unlocking the second RP2040 core, but I have no clue how to do that. EDIT: You can completely disregard my last sentence. embassy.dev is a rust async executor for embedded systems (meaning easy multithreading) and it has a module for RP2040 :tw_smile:, so excited to try it out. Long live the crab language.
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AidenRheem-U04FRJE5L5Q
@AidenRheem-U04FRJE5L5Q0
#10-days-in-public, Day 6!, Today I watched another episode of Fusion 360 tutorials and completed the 3D design for my monitor light bar! Currently, I am working on the Arduino code now to make the light switch colors based on a touch input on a sensor!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/ac3bc327-02f1-4f2c-a417-63801661a5ee-screenshot_2024-02-20_at_11.52.08___am.png
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dav
@dav0
Day 5 of #10-days-in-public A bit late tonight (shame), but got some good work done. First of all, I fixed the deterministic rng problem by having a seed screen that randomizes the seed using user inputs and time. I also implemented the obstacle rendering optimization I talked about on day 3. However, with all of this, there's one big problem! Text rendering and 3D rendering work separately. 3D rendering is done using a rasterizer that writes to a framebuffer. This framebuffer is then blit to the screen every frame. Text rendering is directly blitted to the screen directly using embedded_graphics . This causes major flickering when the framebuffer overlaps the text (only on hardware). The solution in my mind is to keep a small area of the screen for text and the rest for the framebuffer. In other words, I'm going to sweep this problem under the rug. Anyway, I'm very happy with how everything's turned out so far. Even with completely disregarding embedded performance, it runs just fine on hardware :tw_smile:
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Scott170
@Scott1700
Day 3 of #10-days-in-public I fully decided I will use an arduino nano after researching in the hopes of it being lightweight enough for servos to hold up. I started on the pcb design and it will most likely end up looking like this:
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NikosTsilas-U04N415FE4T
@NikosTsilas-U04N415FE4T0
Day 3 #10-days-in-public I chose some colors for my website and added a table for the Arduino lesson index. I didn't have the time to do many things, unfortunately, I had (and I have) to go somewhere. Tomorrow is the big day, I will start making some lessons (I hope to make them as interesting and useful as possible).
https://scrapbook-into-the-redwoods.s3.amazonaws.com/9614ed6a-3af6-4fc1-9fd6-54489ae6fd30-screenshot_2024-02-17_175606.pnghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/9f38988a-5622-4f1a-a856-18fa6a056140-screenshot_2024-02-17_180026.png
V205
@V2050
day 2 of #10-days-in-public trying to understand low power module thingy I lost some changes from yesterday 😞 Arduino thingy
https://scrapbook-into-the-redwoods.s3.amazonaws.com/5dbbbd38-a310-446d-a695-9ea232e8a4ff-screenshot_2024-02-16_at_1.03.44___pm.png
V205
@V2050
day 1 of #10-days-in-public learning about converting datatypes in C++(arduino), need to fix some bugs for printing things trying to convert floats to char(I think) and get rid of Strings and use strings
https://scrapbook-into-the-redwoods.s3.amazonaws.com/bdb30f01-72ef-4549-99cd-90e099e6d9d8-screenshot_2024-02-15_at_1.43.38___pm.png
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karmanyaahm
@karmanyaahm1
I got mad at Linux so doing a little hardware now. My first fully-from-scratch 3d model since I got my new printer, so pretty excited
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karmanyaahm
@karmanyaahm1
Spent like 4 hours debugging drivers, cuz apparently 2 of the drivers had some weird ground or capacitance issue where vref (for current limit) only worked when I had my finger (or multimeter probes :angry-dino: near it). So the motor didn't move unless I had my finger near the board. Ended up fixing it by switching to a 3rd driver which was apparently just fine?????
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Kieran
@Kieran0
finished soldering and testing my half size led cube! now to wire it all up to a rpi or pico tomorrow!
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Micha
@Micha0
JLCPCB emailed me to say that the buttons on my E-Fidget PCBs have pins outside of the solder pads (red is good, yellow is bad), how's your day going? (I YOLO'ed it, it'll be fiiiine. Right?)
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Kieran
@Kieran0
r1x70 has arrived for my first major hardware project, "project amber waves"
https://scrapbook-into-the-redwoods.s3.amazonaws.com/46d44544-b3e1-4642-b295-7c627ea2e519-photo_jan_8_2024__1_.jpg
sam
@sam0
Did some of the things I've procrastinating on for a long time! I cleaned up my workspace and installed some fume ventilation!! :partyparrot: Bought some of the small storage drawer things, they are so good for small components and can be fully pulled out for use. Also got some small bins as catch-all storage when I'm building stuff, those fit in really nicely in the drawer I already had. Also sorted some stuff into my SKADIS pegboard, it's amazing and I'm going to 3D print more stuff to go on there! CAD-ed and 3D printed some parts using Fusion 360 to connect up some flexible plastic ducting from home depot. Also made a mount for my air purifier (it only filters PM2.5 so not too useful on its own) to connect it all together! Originally, I had another duct for my Resin 3D printer's fumes, but a ribbon cable broke in there so I'm coping right now. It works! No more solder fumes in my face!
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Tom
@Tom1
It runs on real hardware
https://scrapbook-into-the-redwoods.s3.amazonaws.com/80894593-d999-48c3-8e9d-3fef7493a208-img_20231230_190705.jpg
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leom
@leom0
Made a few minor but well past due updates to my solar website. Also upgraded some of the hardware so I can view the battery and solar panel stats on my phone! (not pictured)
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ShawnMalluwa-U04BBP8H9FA
@ShawnMalluwa-U04BBP8H9FA0
procrastinating my sociology paper so hard that i finished my redesign of the blot pcb mount instead
https://scrapbook-into-the-redwoods.s3.amazonaws.com/f9d3a5a9-be0d-47d9-a85b-b4fb29dcb7b5-image.png
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Averse
@Averse0
More progress on my Uno compatible board! Thinking about switching the MCU for a more powerful one(thanks to @V205 in #hardware for suggesting that I switch).
https://scrapbook-into-the-redwoods.s3.amazonaws.com/cb8cd0ae-8988-4810-9e7c-40ca66eb91e1-screenshot_from_2023-11-28_16-14-58.png
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Domsson
@Domsson0
My OS running on real hardware. Now it has a functional PS/2 keyboard driver and a very basic (unfinished) shell.
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Averse
@Averse0
Unfinished wiring for USB-to-serial chip(ATmega16U2-MU) for my Arduino Uno compatible board I'm making!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/bfcc7c67-955c-4f51-9086-d02889fb20ef-screenshot_from_2023-11-27_16-46-08.png
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Tom
@Tom1
Made a full adder in my web digital logic simulator
https://scrapbook-into-the-redwoods.s3.amazonaws.com/25ad0b8d-ca37-440b-9719-5832aafaeaba-sni__mek_obrazovky_2023-11-22_v__15.34.49.png
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DarrenLau
@DarrenLau0
Just finished experimenting with point to point networking
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Tom
@Tom1
After some debugging i got my os to work in real hardware and it worked better that i expected (i did find a bunch of bugs)
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muirrum
@muirrum0
halfway done soldering my printers new stepper driver!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/22655e27-7113-47f5-8f9a-e37383dc8402-pxl_20231017_180819264.mp.jpg
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ShubhamPatil
@ShubhamPatil0
shopping list item: survive physics :duck-duck-dino-orpheus:
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IceChes
@IceChes0
A different photo because scrappy didn’t want to work
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Tom
@Tom1
Just got an Arduino!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/be26773b-0336-4142-b235-1d5a1f767efb-img_20231004_120341.jpg
rivques
@rivques0
This is the TOTKey, a tool that generates time-based one-time passwords (TOTPs) for 2-factor authentication. I don't always have my phone when I want to log into an account, so I built this. It's an RP2040-based #onboard PCB with a 128x32 OLED screen, a real-time clock, and a few buttons. The board runs CircuitPython, but it's all managed via WebSerial and a web interface at rivques.dev/random-raw-files/totkey.html.
Evan
@Evan0
made a hack club in-n-out sticker as part of my 100 days shopping list! thanks for the feedback @sarahcha and @reesericci!
https://scrapbook-into-the-redwoods.s3.amazonaws.com/4910b7ac-80d8-40bc-b803-8082f6095c33-hackclubburger.png
sahitid
@sahitid0
my 100-days shopping list :heart_hands:
https://scrapbook-into-the-redwoods.s3.amazonaws.com/860b3d6d-40bd-4d60-9d00-a60ffaa01191-img_2245.jpg
karmanyaahm
@karmanyaahm1
Taking apart a fan to try to backdrive LEDs from its rotation step 1
pcb emoji
hardware emoji
summer-of-making emoji
Micha
@Micha0
Repainted my soldering iron today 'cause the paint was getting chipped 🙂
https://scrapbook-into-the-redwoods.s3.amazonaws.com/3dcd9ab8-db4e-4515-9193-4933d293db50-pxl_20230827_121150259.jpghttps://scrapbook-into-the-redwoods.s3.amazonaws.com/f05dd68f-848e-4ae7-a041-aa3b6430179f-pxl_20230827_121142644.jpg