Search found 49 matches

by arpruss
Sun Jun 21, 2020 3:09 pm
Forum: General discussion
Topic: Arduino compile to .bin?
Replies: 5
Views: 1760

Re: Arduino compile to .bin?

In case anybody wants to distribute binaries of a sketch, here's the trick. Set the upload method to Serial. Compile. You will get a .bin file in the temp directory (if you want to see which directory that is, turn on verbose compilation in Arduino). This .bin file can be uploaded by the user using ...
by arpruss
Wed May 13, 2020 1:36 am
Forum: Libraries & Hardware
Topic: USB Composite library
Replies: 18
Views: 8542

Re: USB Composite library

I just posted version 0.99 of the library:
- add Digitizer HID profile
- fix MIDI + serial compositing (and maybe other MIDI compositing issues)
by arpruss
Mon Apr 20, 2020 5:16 pm
Forum: General discussion
Topic: Various problems with bluepill, stlink and serial
Replies: 18
Views: 5318

Re: Various problems with bluepill, stlink and serial

I asked them and they said:
free shipment was for other items not for Black pill .
I am so sorry .
its for items
by arpruss
Fri Apr 17, 2020 11:18 pm
Forum: General discussion
Topic: Various problems with bluepill, stlink and serial
Replies: 18
Views: 5318

Re: Various problems with bluepill, stlink and serial

I also see the "Free shipping" on the website, but on the checkout the lowest shipping option is $3.38 for one and $3.86 for ten.
by arpruss
Fri Apr 17, 2020 5:20 am
Forum: General discussion
Topic: Various problems with bluepill, stlink and serial
Replies: 18
Views: 5318

Re: Various problems with bluepill, stlink and serial

That's weird. When I use their shipping calculator, the cheapest shipping option for one unit is $3.38 to Texas.
by arpruss
Wed Apr 15, 2020 5:01 pm
Forum: General discussion
Topic: Various problems with bluepill, stlink and serial
Replies: 18
Views: 5318

Re: Various problems with bluepill, stlink and serial

I would love to hear how well the APM32 functions. It seems very promising, except the costs are a bit high for smaller quantities. I am particularly curious if USB is fully functional at the higher clock rate, and whether power usage is comparable.
by arpruss
Tue Apr 14, 2020 11:15 pm
Forum: General discussion
Topic: Various problems with bluepill, stlink and serial
Replies: 18
Views: 5318

Re: Various problems with bluepill, stlink and serial

If you are hung-up on the "blue-pill", you are going to need to validate several know good boards from a number of boards you ordered. But, even at $2 per board, you are going to spend $20 for 10 boards and know that a percentage will go to the trash. Depends on what you use them for and whether yo...
by arpruss
Tue Apr 14, 2020 2:36 am
Forum: General discussion
Topic: Wobbly resistance readings
Replies: 15
Views: 2922

Re: Wobbly resistance readings

Updates: 1. I opened my hardware up, and I am using 30K pots, not 400K as stated before. My mistaken. 2. While I don't have any noticeable wobbling on my Windows laptop with all my changes, I have lots of wobbling on my Raspberry PI, mainly on the second pot. I wonder if this is due to the PI's powe...
by arpruss
Mon Apr 13, 2020 9:46 pm
Forum: General discussion
Topic: Wobbly resistance readings
Replies: 15
Views: 2922

Re: Wobbly resistance readings

I don't know how exactly to check if USB is finished transmitting, though I suppose I could just add a simple delay(13) (I know that the transmission takes about 12ms). However, the cost of waiting for USB to finish transmitting is that I introduce more latency, and so I wouldn't be able to afford a...
by arpruss
Mon Apr 13, 2020 3:28 pm
Forum: General discussion
Topic: Wobbly resistance readings
Replies: 15
Views: 2922

Re: Wobbly resistance readings

1. Pulling down the other pins doesn't seem to do anything in my testing. 2. In further testing, turning off interrupts during acquisition doesn't seem to matter much. 3. I found that the limiting factor in my project is USB sending, which happens in the background. That means that I can increase th...

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