Blueprint

mp3 player

portable mp3 player with usb and sd card and long playtime

Created by kaito the fixer kaito the fixer

Tier 3

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Shadow Shadow requested changes for mp3 player ago

User req submitting to stasis

kaito the fixer kaito the fixer submitted mp3 player for ship review ago

CAN CAN ⚡🚀 requested changes for mp3 player ago

Please do not request money for a project you have already built

kaito the fixer kaito the fixer submitted mp3 player for ship review ago

Souptik Samanta Souptik Samanta 🚀 requested changes for mp3 player ago

Hey, please break down any logs higher than 7 hours into parts of 7 hours or less.

kaito the fixer kaito the fixer submitted mp3 player for ship review ago

kaito the fixer kaito the fixer added to the journal ago

soldered the boards and added buttons

for the first attempt i did it solder free as i didn't have the tools yet so now i as i have them i disconnected everything and soldered it again now it's more durable and i added buttons (the board alr got the buttons but i soldered extra wires to connect them to other buttons on the box cover

1- soldered
2- buttons
3- working
4- cutting pos instead of neg this time (switch)

#what i used

Screenshot_2026-03-10-14-58-29-30

#connections

Screenshot_2026-03-10-14-58-41-13

and then i used my secret power to assemble it (MAGIC) yah that's right i used magic

0310-01_1773095309322

i'm joking i just used the power of hope,love,back bending
to turn it from this

IMG_20260310_201443

to this

IMG_20260310_201156

Nachu Thenappan Nachu Thenappan 🚀 requested changes for mp3 player ago

Hi, please add more depth to your journal with every step you took along the way to create the project as right now for 1 journal you have 12 hours listed whereas a good maxium amount to aim for is 3 hours max per journal entry.

kaito the fixer kaito the fixer submitted mp3 player for ship review ago

kaito the fixer kaito the fixer added to the journal ago

updating the readme file

updated the readme file to have schematics,prototype,and the final looks for now and i started working on version 2 of the mp3 player but with custom pcpsIMG20251227165512 for reference this is the v1 see you on the v2 journal

Shaurya Bisht Shaurya Bisht requested changes for mp3 player ago

needs images of design files and more info in the readme

kaito the fixer kaito the fixer submitted mp3 player for ship review ago

kaito the fixer kaito the fixer added to the journal ago

the whole thing (mp3 player journy)

mp3playerREADME2

had different approaches with different goals the first ever approach included a boost converter step-up module to make a secondary mode using speakers had the prototype and everything but it just lost the main goal of being portable and the long playtime so cancelled that and switched to aux headphones approach using a charging module tp4056,mp3 decoder GPD2856 and 18065 battery 1500 mAh with battery holder (to avoid soldering) and adding a switch to change modes 5v (charger) or battery mode

the first problem
1-size if i used speakers -------> switched to smaller design and used aux instead as it more convenient to me

2-when i added the switch for the first time i used an DPDT slide switch 6-pins to cut both live and gnd but it didn't work for no reason and then tried cutting only live and still didn't work
fix ------> i changed the switch with a red button and cut gnd instead of live and it worked

3-fitting the project in box the wires weren't that flexible and couldn't fit it in
fix ------> i rewired everything and measured the dimensions of the box to make wires shorter

4-as i didn't have the ability to 3d print so the enclosure wasn't made to fit my project
fix ------> i got the closest avaliable box in dimensions to the one i designed 125mmx80mmx32xmm and made holes manually using a hot knife

5-finished it with a nice layer of hot glue to make parts steady in place while running.
---------------------------front final

kaito the fixer kaito the fixer started mp3 player ago

12/29/2025 - the whole thing (mp3 player journy)

mp3playerREADME2

had different approaches with different goals the first ever approach included a boost converter step-up module to make a secondary mode using speakers had the prototype and everything but it just lost the main goal of being portable and the long playtime so cancelled that and switched to aux headphones approach using a charging module tp4056,mp3 decoder GPD2856 and 18065 battery 1500 mAh with battery holder (to avoid soldering) and adding a switch to change modes 5v (charger) or battery mode

the first problem
1-size if i used speakers -------> switched to smaller design and used aux instead as it more convenient to me

2-when i added the switch for the first time i used an DPDT slide switch 6-pins to cut both live and gnd but it didn't work for no reason and then tried cutting only live and still didn't work
fix ------> i changed the switch with a red button and cut gnd instead of live and it worked

3-fitting the project in box the wires weren't that flexible and couldn't fit it in
fix ------> i rewired everything and measured the dimensions of the box to make wires shorter

4-as i didn't have the ability to 3d print so the enclosure wasn't made to fit my project
fix ------> i got the closest avaliable box in dimensions to the one i designed 125mmx80mmx32xmm and made holes manually using a hot knife

5-finished it with a nice layer of hot glue to make parts steady in place while running.
---------------------------front final

12/31/2025 - updating the readme file

updated the readme file to have schematics,prototype,and the final looks for now and i started working on version 2 of the mp3 player but with custom pcpsIMG20251227165512 for reference this is the v1 see you on the v2 journal

3/10/2026 - soldered the boards and added buttons

for the first attempt i did it solder free as i didn't have the tools yet so now i as i have them i disconnected everything and soldered it again now it's more durable and i added buttons (the board alr got the buttons but i soldered extra wires to connect them to other buttons on the box cover

1- soldered
2- buttons
3- working
4- cutting pos instead of neg this time (switch)

#what i used

Screenshot_2026-03-10-14-58-29-30

#connections

Screenshot_2026-03-10-14-58-41-13

and then i used my secret power to assemble it (MAGIC) yah that's right i used magic

0310-01_1773095309322

i'm joking i just used the power of hope,love,back bending
to turn it from this

IMG_20260310_201443

to this

IMG_20260310_201156