• Where to source FT232RL?

    Stefan-Xp • 12/01/2016 at 20:22 • 0 comments

    I just did a quick Google search for FT232RL ... the only sources are > 3€.

    So how it is possible to sell a

    Ftdi Ft232rl Usb To Ttl Serial Converter Adapter Module 5v 3.3v For

    at 1,59€ with free shipping?

    For me the BOM would be something like 7€ + production + shipping + gain.

  • Update

    Stefan-Xp • 11/30/2016 at 23:01 • 0 comments

    Until now it was not my Main Idea for this Board but in fact Datalogging is also a nice choice ;-)

    I created a simple programm to read data from A0 and send it cyclically by Serial.

    The intent of the Parameters is to calibrate the readout using some voltage reference values.

    Simply note them in Excel and then calculate the correction equation.

    The "GUI" is a weng German this time ;-)

    Please find some code below :-)

    Read more »

  • Time for a Update

    Stefan-Xp • 11/19/2016 at 17:13 • 1 comment

    I'm not sure, is it possible that there is no really good complete ESP8266 Tutorial in the Internet?

    I tried it this way:

    But till now no success :-(

    Does somebody have some advice?

  • Microchip RN4020

    Stefan-Xp • 07/29/2015 at 21:12 • 0 comments

    I recently found the RN4020 - Looks like an awesome module:

    http://ww1.microchip.com/downloads/en/DeviceDoc/50002279A.pdf

    Perhapps it would work more like i wanted and also is better sourceable ;-)

  • Android Studio :)

    Stefan-Xp • 03/10/2015 at 20:13 • 3 comments

    So obviousely the next step would be to create an app there for.

    But I'm not motivated at the moment :-/ too bad...

  • Long time no see...

    Stefan-Xp • 02/19/2015 at 20:34 • 3 comments

    Well there it is ... the Hardware ;-)

    Designed in December 2000 and 13...and delivered a bit longer than a year ago.

    On the plus side:

    + at least the serial connection via BlueTooth works.

    + It has a LM7805 Footprint

    + It has a mostly working EGBT-045MS

    + I can control LEDs via my Smartphone and a nice App "Bluetooth spp pro"

    + Arduino compatible

    + Convenient half euro card size

    + Footprint for FT232RL (also working ;))

    On the minus side:

    - can't get the BT Module to work as Master/Server

    - no foodprints for SMD-keys

    - No good capability of stacking other boards :-(

  • The general idea...

    Stefan-Xp • 01/28/2015 at 20:26 • 1 comment

    In general my Idea was to use a BT Master Module (Tried with EGBT-045MS (as i assumed)..)

    I thought it would report identificable BT Devices. Somehow it nearly doesn't respond anymore if i set it to Mastermode and Inquire.

    After Getting the BT ID, i would check if the RSSI is over a certain threshold and enable a Button to unlock the door... But first i have to find an other BT Master module or get it running ...