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by racemaniac
Tue Jan 17, 2017 6:58 am
Forum: STM32F4 Boards
Topic: Bluepill with STM32F4
Replies: 19
Views: 449

Re: Bluepill with STM32F4

what package were the ceramic caps ? leads or smd any convenient cap to replace and / or rewire the pads is that PB11 the bluepill pin on the pcb, or pb11 on the cpu or something entirely different ? any other mods needed ? stephen just a normal leads package, and between the pcb pb11 & ground,...
by racemaniac
Mon Jan 16, 2017 7:05 pm
Forum: STM32F4 Boards
Topic: Bluepill with STM32F4
Replies: 19
Views: 449

Re: Bluepill with STM32F4

Ok, after some waiting for the bigger value ceramic capacitors to arrive from china, i finally continued with this project, and i've got some great news :) After adding the required capacitor (4.7µF between PB11 & ground, and yes it HAS to be ceramic), my bluepill with the stm32f411CEU6 is now r...
by racemaniac
Mon Jan 16, 2017 5:42 pm
Forum: Projects
Topic: Neopixel christmas lights
Replies: 17
Views: 256

Re: Neopixel christmas lights

Ok, after an appeal the video is back on youtube XD
by racemaniac
Thu Jan 12, 2017 2:17 pm
Forum: General discussion
Topic: Guide for under- and over-clocking the blue-pill needed
Replies: 39
Views: 423

Re: Guide for under- and over-clocking the blue-pill needed

Pito wrote:Fantastic :!: :!: :!:
Now, how to force my Sdcard to follow :)

see if it has a tiny turbo button somewhere. if i remember anything from my 286-386-486 youth, it's that the turbo button solves any speed related problems :).
by racemaniac
Wed Jan 11, 2017 8:04 pm
Forum: Projects
Topic: Neopixel christmas lights
Replies: 17
Views: 256

Re: Neopixel christmas lights

I may be a bit late for this, but for the season i programmed some nice neopixel patterns to use as christmas lights :)... Did you post the stm32 code you are using and I missed it? haven't posted it yet If you want to use it, here it is: http://users.telenet.be/racemaniac/Neopixel%20Xmas.zip I hop...
by racemaniac
Wed Jan 11, 2017 12:33 pm
Forum: Libraries & Hardware
Topic: MicroSD card socket
Replies: 4
Views: 79

Re: MicroSD card socket

FYI - this socket works fine with SPI 36MHz. I got a bunch (I forgot the actual seller). On the pcb 4x 10k pullups and 2 decoupling caps. It works with MM here fine. Fits solderless breadboard pitch. http://www.ebay.com/itm/2PCS-TF-Micro-SD-Card-Mini-SD-Card-Module-Memory-Module-Arduino-ARM-AVR-S-/...
by racemaniac
Wed Jan 11, 2017 10:57 am
Forum: Projects
Topic: Neopixel christmas lights
Replies: 17
Views: 256

Re: Neopixel christmas lights

Also, not sure if it's mentioned on this forum already, but neopixels actually need about 3.7-3.8V to fully turn on all colors. Above that voltage you don't see any difference. The rest is just dissipated as heat by the voltage control on the pixel. :shock: Never heard about this. The Adafuit PDF D...
by racemaniac
Wed Jan 11, 2017 6:50 am
Forum: Projects
Topic: Neopixel christmas lights
Replies: 17
Views: 256

Re: Neopixel christmas lights

these are all ws2812 strips (the one filmed is 60 leds/m) they're a bit more expensive :) but wow, didn't know they were dumping the ws2811's at such prices :D. might want to buy some of those too :D Also a difficult decision is 5V or 12V strips. the 12V are easier for longer lengths as there is les...
by racemaniac
Tue Jan 10, 2017 6:10 pm
Forum: Projects
Topic: Neopixel christmas lights
Replies: 17
Views: 256

Re: Neopixel christmas lights

ddrown wrote:
racemaniac wrote:should be fixed now. entered the wrong portnumber >_<


Yup, it works now. Those are fun christmas lights, what are you using for your controller?

a maple mini clone ofcourse :D
atm it has got 2 framebuffers so i can do fades & other fun transitions between effects :).
by racemaniac
Tue Jan 10, 2017 3:12 pm
Forum: Generic STM32F103
Topic: Blue Pill with nicer silk screen PCB
Replies: 7
Views: 186

Re: Blue Pill with nicer silk screen PCB

nice btw, another small question on ordering these. For me starting at 3 boards, the shipping is no longer free as they switch to another shipping method. What do you guys do? just go with it, or make multiple small orders? (i've been testing out the latter, seems to work XD) You can do it pretty qu...

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