Search found 63 matches

by Squonk42
Sun Aug 06, 2017 8:19 pm
Forum: General discussion
Topic: [HackaDay] Take the Blue Pill and go Forth
Replies: 5
Views: 176

Re: [HackaDay] Take the Blue Pill and go Forth

eLua is a big ram eater :) .. I managed to run eLua with full 192kB (F407) but frankly, I would need a few MB to be happy.. Thinking to compile the latest eLua for my Black F407 with 512kB ram.. The native and only type is double (64bit) floating point in eLua, so FPU will not help much. PS: wait o...
by Squonk42
Thu Aug 03, 2017 8:13 am
Forum: Libary request
Topic: I2C Slave Library
Replies: 4
Views: 1408

Re: I2C Slave Library

AFAICT, the current errata for the STM32F103C8 is now ST Doc ID 14574 Rev 13 , not the obsolete Rev 8: http://www.st.com/content/ccc/resource/technical/document/errata_sheet/7d/02/75/64/17/fc/4d/fd/CD00190234.pdf/files/CD00190234.pdf/jcr:content/translations/en.CD00190234.pdf From the document revis...
by Squonk42
Tue Jun 06, 2017 5:20 am
Forum: Libary request
Topic: MPU-6050 (I2C) Library
Replies: 34
Views: 5489

Re: MPU-6050 (I2C) Library

I used the RTIMU lib a few years ago with the MPU9150, but it did not include filtering, ( I am not sure if it got updated to include filtering, but I think the library has been abandoned now by its author). From https://github.com/RTIMULib/RTIMULib2: RTIMULib also supports multiple sensor integrat...
by Squonk42
Mon Jun 05, 2017 11:50 am
Forum: Libary request
Topic: MPU-6050 (I2C) Library
Replies: 34
Views: 5489

Re: MPU-6050 (I2C) Library

I wrote a blog entry on the Sensor Fusion subject a few months ago, if this can be useful to someone:
http://www.wifi4things.com/motion-sensor-fusion/
by Squonk42
Sat May 13, 2017 7:25 am
Forum: Postbag
Topic: Andy's Postbag and random ebay links
Replies: 112
Views: 3442

Re: Andy's Postbag and random ebay links

there are tons of touch panels for the modern smart phones hi-tech capacitive (multi) touch often with the controller http://www.ebay.com/sch/i.html?_odkw=4+wire+touch+panel&_sop=15&_osacat=0&_from=R40&_nkw=+touch+panel&_sacat=0 the only trouble is that often a google search for how to interface th...
by Squonk42
Thu Apr 27, 2017 11:43 am
Forum: STM32F4 Boards
Topic: tiny stm32 F4 boards
Replies: 76
Views: 3022

Re: tiny stm32 F4 boards

michael_l wrote:This seems small enough.. https://shop.mikroe.com/development-boa ... ni/stm32f4
Yes, but quite expensive. And the choice of mini USB connector vs. microUSB is strange.
by Squonk42
Mon Apr 24, 2017 2:28 pm
Forum: Projects
Topic: WANTED - blue pill schematics and board files
Replies: 7
Views: 474

Re: WANTED - blue pill schematics and board files

It is in Altium PCB format, but it is only contains the silkscreen and mechanical layers, no traces!
by Squonk42
Tue Mar 28, 2017 4:57 am
Forum: Projects
Topic: 9 DoF Motion Sensor Fusion
Replies: 1
Views: 262

9 DoF Motion Sensor Fusion

I wrote a blog post on the subject of motion sensor fusion. As it deals with Arduino libraries and complex embedded computation, I think that the STM32Duino makes a perfect platform for this kind of stuff and that it would be worth for some readers in this forum. Here is the link to my post: http://...