Search found 414 matches

by racemaniac
Tue Jul 18, 2017 1:26 pm
Forum: Projects
Topic: RGB lightsaber
Replies: 55
Views: 3103

Re: RGB lightsaber

Time for another small update: I've recently received some great solder paste (loctite GC-10), and it's working really well :). Been improving the stencils for soldering SMD i make a bit (for the MPU6050 it gave me too much paste, giving shorts when soldering), and i'm now getting pretty decent resu...
by racemaniac
Mon Jul 17, 2017 1:37 pm
Forum: Projects
Topic: stm32 car fuel injection ecu
Replies: 6
Views: 248

Re: stm32 car fuel injection ecu

I once had a discussion about this with a guy who as a hobby did tractor pulling. They were now hoping to find someone who could help them make or reprogram an ECU to maximize power, and screw everything else XD. It sounds like a fun project, but probably not quite friendly to nature XD. I think one...
by racemaniac
Mon Jul 17, 2017 12:31 pm
Forum: Off topic
Topic: just found a cortex m3 wifi SOM for 2$
Replies: 4
Views: 96

Re: just found a cortex m3 wifi SOM for 2$

you're allowed to link to products here (and also name them :p )
we may be interested :)
by racemaniac
Fri Jul 14, 2017 11:39 am
Forum: Off topic
Topic: My first PCB at ELECROW...
Replies: 5
Views: 95

Re: My first PCB at ELECROW...

Maybe interesting to have a topic comparing PCB shops Yap, I agree... Nice! I didn't know that! However it seems that some people aren't happy with them... and I suspect that they do the job using various companies... But your PCBs seem absolutely ok, and free panelization is great! I agree too... ...
by racemaniac
Fri Jul 14, 2017 11:33 am
Forum: Off topic
Topic: Making your own pcb's.
Replies: 4
Views: 127

Making your own pcb's.

I'm wondering how you guys make your own pcb's, where i currently am (i started doing it fairly recently): Designing them I use KiCad to design my pcb's. I chose it since it's free, and as i started fairly recently, it was already at a point where it seems good enough. for me: pros: -free -the UI is...
by racemaniac
Fri Jul 14, 2017 11:07 am
Forum: Off topic
Topic: My first PCB at ELECROW...
Replies: 5
Views: 95

Re: My first PCB at ELECROW...

Maybe interesting to have a topic comparing PCB shops Here is my second batch of pcb's from DirtyPCBs http://www.stm32duino.com/download/file.php?id=1616 Also made with KiCad, with a minimum track width/clearance of 6/6 mils. Total cost (incl shipping) was 25$, for a protopack of +-10 of 10x10cm pcb...
by racemaniac
Fri Jul 14, 2017 8:00 am
Forum: General discussion
Topic: Need help picking a MCU for custom board. Where should I post?
Replies: 4
Views: 113

Re: Need help picking a MCU for custom board. Where should I post?

Ah, another lightsaber builder :D here's the thread of my project: http://www.stm32duino.com/viewtopic.php?f=19&t=800 Currently i've got my first selfmade pcb's i'm testing with, and these are my hardware choices atm: - STM32f411CEU6 -> compact, but a lot of ram & memory, and affordable to buy from ...
by racemaniac
Thu Jul 13, 2017 2:22 pm
Forum: General discussion
Topic: "Irregular" non-integer timer interrupt values (e.g. 22.67us/44.1khz)
Replies: 17
Views: 224

Re: "Irregular" non-integer timer interrupt values (e.g. 22.67us/44.1khz)

Concerning DAC's, if you don't mind 12bit accuracy, the MCP4725 (which you can find very cheap online) is great in combination with the bluepill. I've posted code for it in the last post of this thread: http://www.stm32duino.com/viewtopic.php?t=1048 It allows you to reach sampling rates of up to 60K...
by racemaniac
Sat Jul 01, 2017 12:17 pm
Forum: Off topic
Topic: Arduino programmable smart Watch
Replies: 82
Views: 3446

Re: Arduino programmable smart Watch

The problem is not so much opening it in the first place, but having to open it each time I want to flash new firmware I can install a DFU bootloader, but in order to run the bootloader the watch needs to be reset. Well, it can be reset in software via BLE, but if the sketch crashes, then its impos...
by racemaniac
Sat Jul 01, 2017 7:14 am
Forum: Off topic
Topic: Arduino programmable smart Watch
Replies: 82
Views: 3446

Re: Arduino programmable smart Watch

@roger: do you have a heat gun/hot air solder station? the last watch i opened was also glued shut, so i slowly heated it with my heat gun and carefully pried the edges until the glue loosened, and like that i could easily open it without damaging it. (and then the screen was glued to the pcb, so th...