search

alf45tar / PedalinoMini

Wireless and Bluetooth MIDI Foot Controller
GNU General Public License v3.0
501 stars 88 forks source link

[Questions] Relating to the Heltec board #335

Closed Samantha-uk closed 2 years ago

Samantha-uk commented 2 years ago

Firstly I must say this is an amazing work of art!

Like others (I think) I did not find myself in a position to purchase a retail Midi Footswitch. Having some experience in s/w & h/w I set out to design/build one myself and in my research found your gem!

I'm working with a Heltec WiFi 32 and have been able to locally build and flash the image using the VS platform.io extension.

At this point I'm building an 8 button box.

GPIOs I see that not all of the available GPIOs are used, is this because some of the other ESP32 boards do not present as many pins?

Momentary 2 Is it possible to modify the code so that when I set a Pedal to Momentary 2, it will set both the inputs to digital and use internal pull-ups? If yes, could you point me at the area in the codebase to look at (It's been many years since I used C/C++ in anger and I'm new to MC dev) and I can have a play.

Simultaneous button press I see you use the AceButton library, which says it can support simultaneous button press detection example. Do you think it is feasible to incorporate this feature? (I am happy to try to submit a PR but don't want to pursue this if there are known reasons it will not work)

alf45tar commented 2 years ago

Pin assignment start here https://github.com/alf45tar/PedalinoMini/blob/86ef84bb3b876c670c29822e3a7f52a044912536/src/Pedalino.h#L42 and I do no see any unused pin according the following schematic.

alf45tar commented 2 years ago

GPIOs 34 to 39 are input only pins. These pins don’t have internal pull-up or pull-down resistors.

alf45tar commented 2 years ago

Is simultaneous button press important for you? It is feasible but it not so easy and also...

Note that this program works only when using ButtonConfig. Buttons using EncodedButtonConfig (binary encoding) and LadderButtonConfig (resistor ladder) cannot detect simultaneous button presses.

Samantha-uk commented 2 years ago

After much digging I've discovered that my HELTEC_WIFI_KIT_32 is using a ESP32-D0WDQ6 soc. This appears to be the Initial production release chip of the ESP32 series and is known to be a bit buggy. Thankfully no soldering was done so I can return it.

I'm going to proceed with a Unexpected Maker ProS3 , it costs a little bit more (But given I need just the one it is not significant) but it uses the latest gen ESP32-S3 soc and the board is amazingly powerful and well constructed.

I can see two downsides. 1) No integrated display 2) Arduino core support is only a few days old!

image

image