[2024 DigiKey Creative Competition] Cyber recorder first attempt

jd3096

[2024 DigiKey Creative Competition] Cyber recorder first attempt [Copy link]

 

The first attempt at board-playing was very idealistic, but the reality was very skinny, as shown below:

Overall test results (0820):

1. The screen lights up normally

2. One of the buttons has poor contact (structural problem) and the rest are normal

3. Both MIDI and Bluetooth MIDI work normally

4. The joystick does not work due to a schematic error

5. The air pressure sensor can blow normally

6. The mouth-blown and air-tubes purchased online are usable normally.

Errors found so far:

1. The joystick schematic diagram is wrong, and the flying wires can be broken. It turns out that you can't trust the unknown libraries on the Internet too much. Only those that have been officially certified or certified by yourself can be used with confidence. The next board has been corrected;

2.IO38 is used to connect the RGB light on the board. I didn't observe it myself before, and it was a mistake! I have changed the button IO to something else;

3. The metal contact between the button leg and the back of the joystick causes poor contact. This error is difficult to find without a physical object. The initial decision is to stick insulating material on it.

Small issues that cannot be called errors:

1. The buttons are too hard. Pressing one is fine, but pressing all seven at the same time requires a lot of force. Try a softer button (keep trying until you find a satisfactory one).

2. The structure is not easy to make the shell, which is very challenging. I haven't figured out how to fix the air pressure module and MIDI module.

3. MIDI has a relatively high latency. As a musical instrument, it is very sensitive to operation latency. We need to find a way to optimize the logic.

秦天qintian0303

The Cyber recorder has 7 keys in total corresponding to 7 holes, but there are many changes in the strength of the airflow. How do I do this?

秦天qintian0303

And it feels better to use capacitive touch buttons, which saves effort

damiaa

They all worked very hard. It seems that they were all aiming for the big prize.

jd3096

Qintianqintian0303 posted on 2024-8-20 13:34 Cyber recorder, a total of 7 buttons corresponding to 7 holes, but there are many changes in the strength of the airflow, how to do this?

There is also an air pressure sensor that I didn't include in the photo. It monitors the strength of the airflow by changing the air pressure when blowing.

ly87802541

jd3096 posted on 2024-8-20 15:14 There is also an air pressure sensor that I didn't take a picture of. It can monitor the strength of the airflow by changing the air pressure when blowing.

This idea is really 666!

吾妻思萌

MIDI is fun. I've played around with Adobe's software before, but I don't have the music germs to figure it out.

qwert1213131

The speed is really fast. I guess my board will arrive this weekend.