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Merge remote-tracking branch 'ChouzArt/LinksPatch' into relativeUrlWorkaround
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‎src/02-requirements/README.md

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[3]: http://www.ebay.com/sch/i.html?_nkw=stm32f3discovery
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<p align="center">
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<img title="STM32F3DISCOVERY" src="/assets/f3.jpg">
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<img title="STM32F3DISCOVERY" src="../assets/f3.jpg">
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</p>
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- OPTIONAL. A **3.3V** USB <-> Serial module. [This particular model][sparkfun] will be used
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[4]: https://www.aliexpress.com/wholesale?SearchText=CH340G
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<p align="center">
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<img title="A 3.3v USB <-> Serial module" src="/assets/serial.jpg">
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<img title="A 3.3v USB <-> Serial module" src="../assets/serial.jpg">
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</p>
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- OPTIONAL. A HC-05 Bluetooth module (with headers!). A HC-06 would work too.
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[6]: https://www.aliexpress.com/wholesale?SearchText=hc-05
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<p align="center">
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<img title="The HC-05 Bluetooth module" src="/assets/bluetooth.jpg">
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<img title="The HC-05 Bluetooth module" src="../assets/bluetooth.jpg">
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</p>
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- Two mini-B USB cables. One is required to make the STM32F3DISCOVERY board work. The other is only
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required if you have the Serial <-> USB module.
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<p align="center">
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<img title="mini-B USB cable" src="/assets/usb-cable.jpg">
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<img title="mini-B USB cable" src="../assets/usb-cable.jpg">
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</p>
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> **NOTE** These are **not** the USB cables that ship with pretty much every Android phone; those
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[9]: https://www.aliexpress.com/wholesale?SearchText=dupont+wire
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<p align="center">
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<img title="Jumper wires" src="/assets/jumper-wires.jpg">
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<img title="Jumper wires" src="../assets/jumper-wires.jpg">
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</p>
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> **FAQ**: Wait, why do I need this specific hardware?

‎src/04-meet-your-hardware/README.md

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## STM32F3DISCOVERY (the "F3")
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<p align="center">
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<img title="F3" src="/assets/f3.jpg">
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<img title="F3" src="../assets/f3.jpg">
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</p>
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We'll refer to this board as "F3" throughout this book.
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## The Serial module
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<p align="center">
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<img title="Serial module" src="/assets/serial.jpg">
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<img title="Serial module" src="../assets/serial.jpg">
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</p>
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We'll use this module to exchange data between the microcontroller in the F3 and your laptop. This
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## The Bluetooth module
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<p align="center">
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<img title="The HC-05 Bluetooth module" src="/assets/bluetooth.jpg">
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<img title="The HC-05 Bluetooth module" src="../assets/bluetooth.jpg">
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</p>
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This module has the exact same purpose as the serial module but it sends the data over Bluetooth

‎src/05-led-roulette/flash-it.md

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a USB device when you connect the F3 to your laptop.
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<p align="center">
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<img height=640 title="On-board ST-LINK" src="/assets/st-link.png">
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<img height=640 title="On-board ST-LINK" src="../assets/st-link.png">
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</p>
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‎src/05-led-roulette/the-challenge.md

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Also, this may help:
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<p align="center">
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<img src="/assets/timing-diagram.png">
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<img src="../assets/timing-diagram.png">
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</p>
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This is a timing diagram. It indicates which LED is on at any given instant of time and for how long

‎src/06-hello-world/README.md

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[User Manual]: http://www.st.com/resource/en/user_manual/dm00063382.pdf
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<p align="center">
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<img height=640 title="Manual SWD connection" src="/assets/f3-swd.png">
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<img height=640 title="Manual SWD connection" src="../assets/f3-swd.png">
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</p>
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---

‎src/10-serial-communication/loopbacks.md

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Enter: loopbacks
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<p align="center">
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<img title="Serial module loopback" src="/assets/serial-loopback.png">
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<img title="Serial module loopback" src="../assets/serial-loopback.png">
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</p>
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You can send data to yourself! Not very useful in production but very useful for debugging.

‎src/10-serial-communication/nix-tooling.md

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A text-based user interface (TUI) will pop out.
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<p align="center">
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<img height="480" title="minicom" src="/assets/minicom.png">
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<img height="480" title="minicom" src="../assets/minicom.png">
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You can now send data using the keyboard! Go ahead and type something. Note that the TUI *won't*

‎src/10-serial-communication/windows-tooling.md

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Now launch `putty`. A GUI will pop out.
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<p align="center">
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<img title="PuTTY settings" src="/assets/putty-settings.png">
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<img title="PuTTY settings" src="../assets/putty-settings.png">
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</p>
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On the starter screen, which should have the "Session" category open, pick "Serial" as the
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Finally, click the Open button. A console will show up now:
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<p align="center">
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<img title="PuTTY console" src="/assets/putty-console.png">
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<img title="PuTTY console" src="../assets/putty-console.png">
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</p>
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If you type on this console, the TX (red) LED on the Serial module should blink. Each key stroke

‎src/11-usart/README.md

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TX pin. The wiring diagram below shows all the necessary connections.
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<p align="center">
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<img height=640 title="F3 <-> Serial connection" src="/assets/f3-serial.png">
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<img height=640 title="F3 <-> Serial connection" src="../assets/f3-serial.png">
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</p>
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These are the recommended steps to connect the microcontroller and the serial module:

‎src/12-bluetooth-setup/README.md

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F3 power to it using the following connection:
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<p align="center">
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<img height=640 title="F3 <-> Bluetooth connection (power only)" src="/assets/f3-bluetooth-power-only.png">
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<img height=640 title="F3 <-> Bluetooth connection (power only)" src="../assets/f3-bluetooth-power-only.png">
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</p>
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The recommend steps to wire this up are:

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