(r7) EWheelEn < Velo

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There are things you don't need but are fun to use, build, and learn. 

Yet another LED blinker (YALB). There are so many LED blinking projects out there, why another boring blinker? This is a different one. At least, it has more LEDs (32 RGB-LEDs ;-) ) than an average blinker and the LEDs are controlled in real time (reaction time less than 270 us to switch 96 LEDs). But there are more technical concepts to explore. !I2C communication between main MCU and peripherals (pressure meter, accelerometer). Asynchronous serial communication between main MCU and the bluetooth subsystem. USB serial communication (terminal console) for testing purposes. Applied low power techniques (control and charging !LiPol battery, real time clock, wake up through motion detection). Definitely a good project to learn how embedded systems work.

The project name _Velo Bling-Bling_ consists of Velo (bicycle  in French/Swiss  or velocity in English) and Bling-Bling (flashy, ostentatious, or elaborate jewelry and ornamented accessories).

The first project name (working title) was eWheel. The e stands for [[http://de.wikipedia.org/wiki/Leonhard_Euler][Euler]]. 

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   * Built in cyclocomputer, w/ pressure altimeter 
   * Configurable over Bluetooth Low Energy (BLE, Bluetooth 4.0) by Smartphone (Android 4.4+, !iPhone) 
   * Integrated !LiPol battery charger (Micro-USB connector)
   * Push button can be used to start and stop trip
   * 50 custom pictures (upload through USB or BLE) 
[[BlingBlingDatenEn][More details]]
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   * %N% Software and hardware is  [[OpenSourceEn][Open Source]].
   * [[BlingBlingDatenEn][Technical data]]
   * [[BlingBlingFunktionsweiseEn][How does it work?]]
   * [[BlingBlingTechnikEn][Bling-Bling history]]
   * [[BetaTestEn][Betatest & installation party]]
   * [[UserManual][User manual]]
   * [[MainMCUFirmware][Main MCU firmware]]
   * [[BluetoothApplication][Bluetooth application]]
   * [[PcbDesign][PCB design]]
   * [[FrameDesign][Mechanical design (frame)]]
   * Nonstop 1230 km endurance test at [[ParisBrestParis2015][Paris-Brest-Paris]]

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EWheel

-- Main.PeterSchmid - 2014-02-21

<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Velo Bling-Bling</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://veloblingbling.ch" property="cc:attributionName" rel="cc:attributionURL">Peter Schmid</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.
Topic revision: r7 - 2016-03-29 - PeterSchmid