Search found 1528 matches

by ahull
Fri Jul 14, 2017 8:51 am
Forum: General discussion
Topic: Problems with regular simultaneous dual ADC conversion with DMA transfer
Replies: 77
Views: 7597

Re: Problems with regular simultaneous dual ADC conversion with DMA transfer

zmemw16 wrote:
Thu Jul 13, 2017 7:31 pm
with apologies to agatha c, but why didn't they ask @ahull :?:
Don't ask him, he knows nothing ;)
by ahull
Tue Jul 04, 2017 11:20 am
Forum: Postbag
Topic: Rogers postbag
Replies: 68
Views: 3274

Re: Rogers postbag

char*M,A,Z,E=40,J[40],T[40];main(C){for(*J=A=scanf(M="%d",&C); -- E; J[ E] =T [E ]= E) printf("._"); for(;(A-=Z=!Z) || (printf("\n|" ) , A = 39 ,C -- ) ; Z || printf (M ))M[Z]=Z[A-(E =A[J-Z])&&!C & A == T[ A] |6<<27<rand()||!C&!Z?J[T[E]=T[A]]=E,J[T[A]=A-Z]=A,"_.":" |"];} ... something like that per...
by ahull
Sun Jul 02, 2017 10:45 pm
Forum: Generic STM32F103
Topic: Blue F103ZET6 - PortB and EEPROM
Replies: 2
Views: 89

Re: F103ZET - PortB and EEPROM

I suspect you would get away with not removing it, since the signals that will appear on the pins will look nothing like valid data to the eerom (and if they do, since you are not relying on the contents of the eerom, then if they get scrambled it doesn't matter). There is a risk I suppose that the ...
by ahull
Sun Jul 02, 2017 11:53 am
Forum: IDE's
Topic: assembly output
Replies: 11
Views: 303

Re: assembly output

There are a number of other suggestions for command line switches you might like to try here -> https://stackoverflow.com/questions/137 ... rce-in-gcc
by ahull
Fri Jun 30, 2017 4:02 pm
Forum: General discussion
Topic: [SOLVED] Cannot get usb to work
Replies: 15
Views: 263

Re: Cannot get usb to work

What operating system are you using?
by ahull
Fri Jun 30, 2017 3:56 pm
Forum: Projects
Topic: Porting Marlin to STM32.
Replies: 32
Views: 778

Re: Porting Marlin to STM32.

You could put your endstops on a single analog pin with a resistive ladder. You can actually mux an entire 4x3 switch matrix with only one alalog pin and some carefully chosen resistors. http://www.instructables.com/id/Arduino-3-wire-Matrix-Keypad/ I am of course assuming the end stops are mechanica...
by ahull
Fri Jun 30, 2017 12:29 pm
Forum: Off topic
Topic: Arduino programmable smart Watch
Replies: 82
Views: 3515

Re: Arduino programmable smart Watch

Can you mess with its power? If you can run it from a bench supply, then rapid brownouts may crash it in interesting ways, depending on how good its brownout detection is of course. Can you access the crystal? Speeding it up or varying the mark space ratio of the clock may also crash it in interesti...
by ahull
Thu Jun 29, 2017 7:50 pm
Forum: STM8
Topic: STM8 Core
Replies: 34
Views: 719

Re: Slighly off topic ;-)

Two for a dollar sixty eight shipped. That is almost cheaper than I can buy the USB connector for. Sadly I don't currently have the time to play with them otherwise I would...
by ahull
Thu Jun 29, 2017 7:26 pm
Forum: Projects
Topic: Porting Marlin to STM32.
Replies: 32
Views: 778

Re: Porting Marlin to STM32.

Sounds doable, don't forget, we get USB serial on a MM or Bluepill which you don't get on an AVR.
I think this sounds like a pretty useful idea.
by ahull
Thu Jun 29, 2017 4:45 pm
Forum: Projects
Topic: Porting Marlin to STM32.
Replies: 32
Views: 778

Re: Porting Marlin to STM32.

Hi. This might provide the motivation I need to start constructing a 3D printer from scratch, which is a project I have been meaning to undertake for a while.

Do you envisage this being doable with say a bluepill or MM, a hand full of ebay stepper motors and stepper driver boards?