loboat

Nice result ! Is that a black matte finish on your PCB ? It looks great :)

Amazing ! I'm glad you liked it

Hi,For the oscilloscope part :- INPUT_SIGNAL-1 is the "+" input terminal- INPUT_SIGNAL-2 is the ground input terminal- PHONE_MIC_INPUT-1 is the "+" output terminal- PHONE_MIC_INPUT-2 is the ground output terminalHope it helps !

Wonderful ! I'm glad you've added some improvements. What are the other footprints for ? :)

I'm glad you like it!

You're welcome! I thought it might be useful for understanding the whole process.

Thank you!

Here is a tutorial about how to import an image into Eagle :)

Yes, and I have already started the process to make the product marketable. I hope it will be available soon.

You're welcome :)

[UPDATE] To clarify how I went from the PCB routed on EAGLE to PCB soldering, I added two steps on how I generated Gerber files and how I ordered the PCBs. Hope it will help.

Thank you! I didn't know that reference, and I'll definitely keep it in mind for a future project. Thank for the tip! By the the way, the NT3H IC is able to supply a low-power microcontroller alone thanks to its energy harvesting feature. I thought about including a microcontroller in my business card to add a capacitive touch feature but that was a bit "too much" and the cost of a card would have been too high...

Thank you so much!!

Thank you!

Thanks! I'm glad you liked it

Thank you a lot for your vote! I wish you also the best for the contest!

That's very kind but you didn't have to withdrawn your PCB project from the contest just for me..Anyway, thank you for your support! You can grab the .brd file in the step 10 and reuse my design with your contact information if you want. The trial version of Eagle is free and adding some text on a PCB is super easy :)

Thank you ! I worked a lot on cost optimization, but I'm sure it would be better if I lived in Shenzhen. That's also where my PCBs come from...

I'm glad you liked it :)

Excellent work ! The final result looks really professional.And..., is it normal that the third step is in french ? ;)Bonne continuation !

Thank you ! :D

Thank you for the support!

Possible... I used Eagle for the schematic representation of the circuit, but I didn't do any routing with it. If you want to, you have to do some modifications :)

Beautiful creation. I definitely want to build one now !

Yes, with an oscilloscope and a function generator :) (as I explained in the step 1, "How to use these devices").It's the only way

no, unless you change the circuit and the all project...

You can use any app with this hardware. I recommended the ones i found great for my purpose. Bluetooth oscilloscopes have the main advantage to be totally isolated from the input signal. There's no possible way that your phone can be damaged in case of trouble. But, they are more complicated to build : you will need prog skills in addition to electronics skills.

There is no relationship between the pin numbers of the lm324 and the pin numbers of the OP amps used in the eagle schematic. That's why ! :)Just make the circuit using the 4 OP amps of the lm324

Yes. You can check this specification by studying the lm7808's datasheet (you can find it with a quick google search btw)