samliu ⚡🚀
requested changes for LucidDAC ago
Hey! Please make sure you fully check over the submission guidelines (https://blueprint.hackclub.com/about/submission-guidelines). You're missing stuff!
PriXy
gave kudos to LucidDAC ago
I like that. But give pcb file on one folder
sanoojes
submitted LucidDAC for ship review ago
Iamalive 🚀
requested changes for LucidDAC ago
Great pcb, the render is very clean :) Just add cart screenshots of what you're buying(right now it's totally empty), make some basic firmware(try your best!), and also split up your journals some more to show how many hours you spent on each day individually! Thanks!
sanoojes
submitted LucidDAC for ship review ago
PenguinMo
requested changes for LucidDAC ago
Wow, this is cool it a nice way to fix up a old laptop but as of right now, this is a tier 4. to improve this you could consider adding a cool case or something else but besides that, this is looking really nice!
sanoojes
submitted LucidDAC for ship review ago
koeg 🚀
requested changes for LucidDAC ago
This is a really cool PCB! But your cart screenshot and your requested amount don't match up, the total from your cart images is 60$. You should also add your PCB to your BOM file.
You can also consider make a case for it, it would be really cool.
sanoojes
added to the journal ago
Day 6 (28/12/25): Fix the Caps and redo the PCB, Make BOM
Final PCB Render (hopefully)
Make BOM.csv
Sourcing materials for the BOM was a lot harder than i thought.
Google sheets: https://docs.google.com/spreadsheets/d/1fdxZ1MgmA9BG4oKYpkW-0rF1fHJLjdHncqyBkjEwScE/
sanoojes
submitted LucidDAC for ship review ago
sanoojes
added to the journal ago
LucidDAC
A USB-C to 3.5mm DAC cuzz new phones doesn't come with a 3.5mm Jack(f Apple for
removing the jack so that the industry follows)
Day 1 (23/12/25): Planning
Spend 2 hours planing for the Project and how would it turn out,then found out that i can use the PCM2902C DAC chip.
I used that and started creating the schematics following the TI Docs.
Day 2 (24/12/25): Create Schematics for PCM2902C Chip
Created the schematics using the PCM2902C chip to found out later that am confused with the Headphone out Amplifier for the Chip, as am a beginner and wanted to complete it fast as possible i thought ChatGPT would help, but no it didn't and was wrong half of the time. so i decided to use another Alternative or By checking other projects, but Holy there is a lot of stuff
Schematics;
Day 3 (25/12/25): Did more research in free time
Did a lot more research about the PCM2902 Chip and find that its difficult to do so with it, so i thought i would change the DAC Chip and will find a better alternative for it. So i checked out other High quality DACs out there but i couldn't find one that not complicated for me.
Day 4 (26/12/25): Finalizing Decisions
I found out PCM2912A chip that has the Headphone amp? or can drive headphone via itself (Gemini helped me a lot to find and finalize a idea for the DAC that i could complete).
Started Schematics on the PCM2912A Chip and was searching for the USB C and TRRS Female Connectors for the project, and source materials for the DAC
Day 5 (27/12/25): Schematic Revisions and Start working on the PCB
I forgot to take screenshots for the PCB making, but Here is what i did in some words,
Create a edge cut for the PCB to determine the output Size, Decided to use 0805 components as that is easier to hand solder. Place the PCM2912A chip in the center
Find which PCM2912A chip i will use, fixed on PCM2912APJTR and make a small Cart in DigiKey for the components
Day 6 (28/12/25): Complete PCB and Schematics
At last completed the PCB and make the final Schematics and PCB with PCM2912A DAC chip.
PCB
I think i need to revise it more and checkout docs and re-check if i did it correctly
sanoojes
started LucidDAC ago
12/28/2025 3 PM - LucidDAC
A USB-C to 3.5mm DAC cuzz new phones doesn't come with a 3.5mm Jack(f Apple for
removing the jack so that the industry follows)
Day 1 (23/12/25): Planning
Spend 2 hours planing for the Project and how would it turn out,then found out that i can use the PCM2902C DAC chip.
I used that and started creating the schematics following the TI Docs.
Day 2 (24/12/25): Create Schematics for PCM2902C Chip
Created the schematics using the PCM2902C chip to found out later that am confused with the Headphone out Amplifier for the Chip, as am a beginner and wanted to complete it fast as possible i thought ChatGPT would help, but no it didn't and was wrong half of the time. so i decided to use another Alternative or By checking other projects, but Holy there is a lot of stuff
Schematics;
Day 3 (25/12/25): Did more research in free time
Did a lot more research about the PCM2902 Chip and find that its difficult to do so with it, so i thought i would change the DAC Chip and will find a better alternative for it. So i checked out other High quality DACs out there but i couldn't find one that not complicated for me.
Day 4 (26/12/25): Finalizing Decisions
I found out PCM2912A chip that has the Headphone amp? or can drive headphone via itself (Gemini helped me a lot to find and finalize a idea for the DAC that i could complete).
Started Schematics on the PCM2912A Chip and was searching for the USB C and TRRS Female Connectors for the project, and source materials for the DAC
Day 5 (27/12/25): Schematic Revisions and Start working on the PCB
I forgot to take screenshots for the PCB making, but Here is what i did in some words,
Create a edge cut for the PCB to determine the output Size, Decided to use 0805 components as that is easier to hand solder. Place the PCM2912A chip in the center
Find which PCM2912A chip i will use, fixed on PCM2912APJTR and make a small Cart in DigiKey for the components
Day 6 (28/12/25): Complete PCB and Schematics
At last completed the PCB and make the final Schematics and PCB with PCM2912A DAC chip.
PCB
I think i need to revise it more and checkout docs and re-check if i did it correctly
12/28/2025 8 PM - Day 6 (28/12/25): Fix the Caps and redo the PCB, Make BOM
Final PCB Render (hopefully)
Make BOM.csv
Sourcing materials for the BOM was a lot harder than i thought.
Google sheets: https://docs.google.com/spreadsheets/d/1fdxZ1MgmA9BG4oKYpkW-0rF1fHJLjdHncqyBkjEwScE/