Planning

First things first, I'd sketch out what parts I want to move and how I want them to move. Do a little brainstorming and figure out what the backpack is gonna look like. Also it was super important to use everything I learned here, of course I couldn´t use everything but it ended up looking 🎀✨gorgeous✨🎀.

Structure

Now, I've gotta design and build the structures that the servos will move. Thinking about how to make it look fab and not too heavy is key.

• So, the back of the Showsack is where all the action's at. We're talking four servos, one in each corner. These little guys are moving whatever we hook up to 'em in the accesories attachments. The servos are hooked up to this ESP thing, which tells 'em what to do. It's like the brains behind the operation. Each servo gets mounted in a corner of the backpack in different heights, nicely so they can do their thing without wobbling around.

I NEED TO: Define size and slots, infuse with foldable grooves. Craft a LiPo battery compartment with precision, adding PCB holes and mounting four servos. Prepare foam layout, remove excess, and construct cover with flair.

How does this work gurl? Give me sum details

So let me tell you about how the magic happens through the synchronized dance of this four Tower Pro MG995 servomotors:

• These motors have a specially designed 3D-printed attachments that snap right in, allowing you to insert any material you want to animate.

• With three fabulous modes that you can switch between with just a button, everything is controlled by an ESP8266 12F microcontroller with built-in WiFi.

• The inspiration behind this creation comes from the electrifying performances of drag queens, syncing perfectly with the rhythm and lyrics of their music. I researched the most popular beats and crafted three unique servo movements to groove along with them.

• The base and the chic attachments are all made using 3D printing technology.

• To ensure the backpack straps don’t put too much pressure on the wearer, I designed a Y-shaped mold for the intersection of the three straps on the chest using 3D printing, then casted it with silicone. This brilliant move has made the backpack incredibly comfortable.

• Also I laser cut this eva foam cushion for the back of the device to give so much more coooooommmmmfort in the user´s back.

• For this personal project, I filled the cute motor´s attachments with black feathers to test its fabulous capacity hole setup.

❣️🍓ALL ABOUT THE DESIGN 🍓❣️

Soooo here´s the T honey bee..

I used Catia for this design because I just love this software, it´s so much easier, here´s all about the design bae step by step

FOR MORE INFORMATION PLEASE GO TO ❥

• CAD week✨

• Starting with the Strap: First, I sketched out the strap’s outline in CATIA using the Sketch tool. (I figured out the size based on a typical back size, making sure to get the proportions right).

Main Plate

• I created a new Part and drew a 3mm thick plate using Pad. For extra flex in specific areas, I sketched out the reductions and used Pocket to thin it down to 1.5mm where needed.

• Then, I used the Pocket feature to add grooves so the strap could fold easily. (I made sure the grooves were reduced to 1.5mm to give it that extra flexibility).

• For the battery compartment I designed the compartment for the LiPo battery by sketching and extruding it with Pad. Added two side holes with the Hole tool for screwing in the PCB.

• Next, I positioned the mounts for the 4 servos (2 vertical and 2 diagonal) using Pad and Pocket to get them just right.

• After that, I used the Hole tool to add 1.5mm holes where the screws would go. ( These holes are designed so screws can form their own threads, making it super easy and quick.)

• Then, I added passages for the servo cables using Sketch and Pocket, allowing me to neatly route and organize the cables.

• For the cover design I sketched out the cover size based on the board dimensions and screw positions. Then, used Pad to create the cover, making sure it fit perfectly.

• After that, I added holes for the charging cable and switch with the Hole tool, I included a hole to see the LED status for the battery and added grooves for the servo cables using Pocket.

My Catia´s design little carousel











Previous Next

• Finally, I exported the final design and set the infill to 30% for printing, ensuring it was both strong and lightweight. Obviously I did this at the ultimaker cura cuz I just love it. This were my parameters:

  

For the Eva Foam....

• I took a 2D projection of the bottom part that contacts the back using the Drafting workbench. Adjusted the sketch, removed unnecessary bits, and prepared the DXF for cutting.

✨🌸Electronics production🌸✨

So in this text I will explain what PCB fabrication in a nutshell. Basically, special gorgeous machines that are programmed to do this in G-code take our digital designs and turn them into real-life circuit boards. They use a super fast cutter to carve out pathways on copper boards, making the circuits we need. The minimum trace width on a PCB is like the narrowest path it can take, it is like a little highway for electricity. It's super important because it keeps things from overheating or breaking when carrying current.

Unlike those big machines that the current industry uses, here at the FabLab Puebla we use Mini-Millst wich are all about detail, thanks to their fancy software. For this assignment I personally used the ROLAND SRM-20 model gurl, AND YES, I NAILED IT AS ALWAYS✨



I will recomend that you read your machine´s guide so you´ll know perfectly what to do, here´s mine:

• SRM-20 Startup Guide

So for the tools, I used a pretty 15-degree V-bit for engraving and a 0.8mm diameter two-flute end mill for cutting. Also I used this cool software called MODS to make things easier. Trust me, it's a bit intimidating at first, but once you get the hang of it, it gets better!🌺

For managing the Roland I used V-carve software to cut.

In V-carve first, I calibrated in x, then in y, and then the z-axis is where we mark our starting point. Then I swapped out the engraving tool for a V-angle one. After I finshed, I did another calibration, but this time just in z, so I could pop in my 0.8 mm diameter cutting tool. Oh, and always remember, when you're putting your tools in the holder, make sure it's not too tight! Gotta leave it loose so we can do that last bit of calibration by hand and make sure it's all perfect. Don't wanna break the tool when it goes down in z, you know girl...? (I DID)



My design and the result



This were all my parameters:



How to make the electronics work (From a Fashion Designer's POV)💋

So, here's how I made this whole ESP8266 12-F setup work, all while figuring out electronics for the not so first time but ish...

FOR MORE INFORMATION PLEASE GO TO ❥

• Electronic design week ✨

☻Small summary☻



Access Point🛜



• I set up the ESP8266 12-F as the WiFi access point (kinda like a router) so, it could hand the WiFi signal itself.

• Then I connected my cellphone to this WiFi network (SHOWSACK)

• After that I scanned a QR code that had the IP address of the ESP8266. This opened up a custom HTML page I had programmed into the ESP. (for the modes gurl) Remember the system has 3 basic movement modes.

Interacting with the Web Page

• On this HTML page, there's a button. When I press it, it triggers a function in the ESP's code. This function changes a variable, which then changes a function called switch that controls different modes.

• Oh, and super important: This variable can also be changed with a physical button, not just through the webpage.

THE SUPER IMPORTANT VOLTAGE PART

CHALLENGE!!! How did u made 5V servos work with a LiPo battery that maxes out at 4.2V? Girl magic? YAS HONEY!

• The LiPo battery needs a charging circuit. My board has a TP4056 chip for this.

• Next to it, there's a step-up circuit that increases the voltage, but it sacrifices current to do this. It takes my 1600mAh battery from 4.2V to 5V (or up to 27V if needed) by reducing the current.

• The battery has 6.72 watts (4.2V x 1.6A). To see how much current we have at 5V



Why This Battery Works?

• I picked this battery because 1.344A is enough to run 4 servos needing 800mA (200mA each). The ESP8266 can use up to 200mA, sometimes peaking.



Voltage Regulation

• I run the servos at 5V and the ESP at 3.3V.

• To convert the 5V from the board to 3.3V, I used an AMS1117-3.3 voltage regulator.

  This was my first time doing something like this, and I had to learn a lot about electronics on the fly. But it worked! And I couldn't be happier seeing it all come together. LOL it was a total challenge who am I kidding.

  But it payed off... this was the final result of the board

  

★☆All about the programming☆★

FOR MORE INFORMATION PLEASE GO TO ❥

• Interface and apps week ✨

MY PERFECT MOLD (AND THE CASTING SITUATION...)

FOR MORE INFORMATION PLEASE GO TO ❥

• Molding and casting ✨

✴︎The goal was to make a mold without any locks so it releases like butter so I took clues from molding and casting week, going for a Y-shaped embedded mold to keep those straps comfy and user-friendly.✴︎

• ❥I used a 10:1 ratio for the smooth on silicone and activator. For this step u need precision, darling!

• ❥So for the Design in CATIA, I started a new Part and used the Sketch tool to draw a sleek Y-shape. I made sure the dimensions were practical and stylish (I measured my back and added 1in side to side so It could perfectly fit anyone).

  

• ❥After that I used the Pad feature to extrude the sketch to just the right thickness.

• ❥To make sure the mold released smoothly, I added Draft Angles to the sides and then used the Edge Fillet tool to round off all sharp edges, making everything smooth and fab.

• ❥I double-checked everything to ensure the mold was perfect and then exported the design as an STL file and prepped it for 3D printing with a 100% infill. This were my parameters:

  

• ❥The important thing about all this is when pouring the silicone mix into the printed mold always remember to do it from a nice height so the bubbles pop while pouring.

• ❥After I poured the mix I placed the mold on a vibrating uncalibrated CNC milling machine (hello, impro vibration table!) to banish those air bubbles. LOL it totally worked so this is a nice tip.

• ❥Finally I let the silicone set for 8 hours and had my perfect molds ready for sewing process

My molding and casting 🎀✨gorgeous✨🎀 pics

❀✿REMEMBER THAT THIS IS A CAROUSEL CLICK THE ➤ TO SEE ALL THE PICS!!❀✿










Previous Next

HOW I 🪡SEW🧵AND DIDN´T DIED IN THE PROCESS CUZ BAE WE ALL GOT NAILS💅🏼

• So babe, for this instructions you must know that I used a ZOJE electronic industrial sewing machine, must of the industrial sewing machines use the same steps. That being said…let’s go!

  

• Place the spool of thread on the spool pin and guide the thread through the thread guide, down through the tension discs, and up through the take-up lever. This step is super important for all the industrial sewing machines: Thread the needle always from front to back and insert the bobbin into the bobbin case and pull the thread through the slot, under the tension spring using a stitch.

• Lift the presser foot using the lever and place your fabric under the presser foot, aligning it with the sewing guide on the throat plate, then lower the presser foot to hold the fabric in place.

• For the settings set the stitch length to your desired setting (around 2.5-3mm for standard sewing) and adjust the thread tension dial, typically between 4 and 6.

• For the sewing situation you must hold the threads behind the needle to prevent tangling and gently press the foot pedal to start sewing. This is super important to secure the stitches: Sew a few stitches forward, then reverse stitch a few stitches to lock the seam.

• After you’ve finished lift the presser foot and pull the fabric out and cut the threads.



Tips for Fabulous Sewing

• Use high-quality thread to prevent breakage (100% polyester)

• Practice on scrap fabric to get a feel for the machine.

• Keep your machine clean and well-oiled for smooth sewing.

✴︎✎NOW HOW TO MAKE A PRETTY PNG LOGO IN ILLUSTRATOR 2D SOFTWARE✎✴︎

So, I will tell you in a nutshell how to vectorize a 2D trace in Adobe Illustrator and fade it till perfection⭐︎

• 🎀First open Adobe Illustrator and start a new document. Use the Type Tool to craft your chic text. Choose a glamorous font that screams your project (For this part a little tip is to always search the perfect font in the program, but if you do not find it always go for it in Dafont site, all fonts are free and free licensed).

  

• 🎀Then select the text, open the Gradient panel, and splash on those pink shades from blush to white. Adjust the gradient to perfection.

  

• 🎀When you are done export it as PNG with a transparent background for that seamless, luxe finish.

  

THE RESULTING EDITORIAL PICTURES

❀✿REMEMBER THAT THIS IS A CAROUSEL CLICK THE ➤ TO SEE ALL THE PICS!!❀✿





Previous Next

🎀And now... my pretty table of components🎀

SOPHIE´S FABULOUS SHOWSACK COMPONENTS	Where to buy?	Amount	Price	Total price
1 meter 1-inch strap	Amazon	1	$294.62 MXN/unit	$36.82 MXN
1 meter 2-inch strap	Amazon	4	$278.00 MXN/unit	$69.50 MXN
AMS1117 3.3V	Digikey	1	$12.80 MXN/unit	$12.80 MXN
3D printing filament	Mercado Libre	1	$147.00 MXN/unit	$147.00 MXN
ESP-12-F	Mercado Libre	1	$90.00 MXN/unit	$90 MXN
Microswitch 1 pole 2 throws 2 positions	Steren	1	$5.00 MXN/unit	$5.00 MXN
SMD capacitor 1206 10kΩ	Yageo	4	$37.00 MXN/unit	$24.66 MXN
Servomotor with 10 kgf/cm torquer	Steren	4	$174.00 MXN/unit	$696.00 MXN
3.7V 1600mAh LiPo battery	Amazon	1	$183.86 MXN/unit	$183.86 MXN
1 pair of 1-inch backpack buckles	Mercado Libre	1	$221.00 MXN/unit	$110.50 MXN
Smooth-On silicone 3030 activator	Amazon	18g	$954.00 MXN/unit	$18.86 MXN
Smooth-On silicone 3030 rubber	Amazon	108g	$954.00 MXN/unit	$188.67 MXN
TP4056 board with step-up	Mercado Libre	1	$69.00 MXN/unit	$69.00 MXN
Copper plate	Mercado Libre	1	$90.00 MXN/unit	$12.85 MXN
Ostrich-style feathers	Mercado Libre	10	$88.00 MXN/unit	$88.00 MXN
Button	Unit electronics	1	$4.00 MXN/unit	$4.00 MXN
			Total cost	$1757.52 MXN

FOR MORE INFORMATION OF THE PROJECT MANAGEMENT PLEASE GO TO ❥

• Project management ✨

FOR MORE INFORMATION OF THE APPLICATIONS AND IMPLICATIONS PLEASE GO TO ❥

• Applications and implications ✨

MY TIME IS PRECIOUS BAE⏱️🌟

week schedule	✨My fab final project✨
Computer Aided Design	Designing the main body
Computer Controlled Cutting	Laser cut my Eva Foam cushion
Electronics production	Learning about this
3D scanning and printing	3D scanning nice things
Embedded programming	Designing my board ISH
Computer Controlled machining	Making my new home´s furniture sooo cute
Electronics design	Making the programmer
Output devices	Making a wi-fi rele board
Mechanical design, machine design	OMG MY TEAM AND I NAILED IT
Break, midterm review	Working on documentation for final project page
Input devices	Button situation
Molding and casting	Making the mold of a super nice organic form + this proyect´s mold
Networking and communications	Gurl I made this ESP work here
Interface and application programming	This HTML page
Wildcard week	I soldered my own TABLE OMG YESSSS
Applications and implications, project development	I MADE THIS AWESOME SITE
System integration	Programming
Invention, intellectual property, and income	FINISHING THIS
Project presentations	DEAL WITH IT AND VIBE BAE

AND NOW MY LAST MONTH´S SCHEDULE...

Detailed schedule for my last month bae cuz it´s 2 much	DAY	TASK
10 may	wednesday	pcb design
11 may	wednesday	buy pcb components
12 may	wednesday	milling pcb
13 may	wednesday	soldering
14 may	wednesday	documenting the electronics production part
15 may	wednesday	documenting edits
16 may	wednesday	putting together video
17 may	wednesday	3D design the main structure
18 may	wednesday	3D design the main structure
19 may	wednesday	edits
20 may	wednesday	3D designing the accesories
21 may	wednesday	edits
22 may	wednesday	Buy feathers
23 may	thursday	3D printing the main device
24 may	friday	3d printing the accesories
25 may	saturday	Designing the back eva foam cushion
26 may	sunday	Moldering design
27 may	monday	Laser cutting the chusion
28 may	tuesday	Documenting the 3D design process
29 may	wednesday	Casting the mold
30 may	thursday	Coding
31 may	friday	Testing the code
1 june	saturday	Testing the code in the device
2 june	sunday	Edits
3 june	monday	Making the sheet
4 june	tuesday	Documenting images
5 june	wednesday	Presentation png edits
6 june	wednesday	Presentation png upload and video making
7 june	wednesday	Editing video
8 june	wednesday	Documenting
9 june	wednesday	Documenting
10 june	wednesday	Documenting

This are my fab files DO NOT STEAL THEM GURL LOL..🌸

• My showsack logo
• My board rml cut file
• My code file
• Smaller Accesories (2,4)
• High Accesories (1,3)
• Bottom top
• Superior top
• The x backpack

FOR MORE INFORMATION OF MY LICENSE PLEASE GO TO ❥

• INVENTION AND INTELECTUAL PROPERTY✨

Super special thanks to

My 🎀✨gorgeous✨🎀 boyfriend Jose Javier, babe thanks so much for always supporting my dreams

My pretty roomate Lucia, for bearing all the noises

My nice instructor Oliver for helping me out

Last but not least the super cool Alberto Blanco, you made me dream big profesor!