improved installation section

README.md

@@ -2,7 +2,7 @@
 
 # M5StickC DCF77 HAT
 
-Basic hat implementation of a DCF77 receiver for M5StickC-Plus or compatible ESP32 devices. This firmware uses a improvement of Arduino-DCF77 library, it is using events callback to improve the GUI and signal representation.
+Basic hat implementation of a DCF77 receiver on a M5StickC-Plus or compatible ESP32 devices. This firmware uses an [improvement of Arduino-DCF77 library](https://github.com/hpsaturn/Arduino-DCF77), using an event callback to improve the GUI and signal representation.
 
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@@ -14,7 +14,7 @@ Basic hat implementation of a DCF77 receiver for M5StickC-Plus or compatible ESP
 
 ## Device
 
-The current firmware was tested on 77.5KHZ single frequency device. It is the 4 pins version and it was bought here in [Aliexpress](https://www.aliexpress.com/item/1005005254051736.html).
+The current firmware was tested on 77.5KHZ single frequency device. It is the 4 pins version and it was bought in [Aliexpress](https://www.aliexpress.com/item/1005005254051736.html).
 
 ## Wiring
 
@@ -31,17 +31,27 @@ The current firmware was tested on 77.5KHZ single frequency device. It is the 4
 
 **Some tips:**  
 
-- [x] check the right device. Some devices has different frequencies for each country.
-- [x] Try to remove the device from any radio or wireless intereference or noise. The radio is very susceptible to noise.
-- [x] In indoors works, but is possible that in some builds doesn't. Try in outdoors first
-- [x] the position of the device for me was important, in horizontal is possible that it works better
+- [x] Check the right device. Some devices has different frequencies for each country.
+- [x] Try to leave the device from away any radio or wireless interference or noise. The radio is very susceptible to noise.
+- [x] In indoors it works, but is possible that in some builds doesn't. Try in outdoors first.
+- [x] The position of the device for me was important, in horizontal is possible that it works better
 
 **Buttons:**
 
 - Left button: Power ON/Off
 - M5 Button: Backlight or brightness toggle
 - Right button: Unimplementened  
 
+## Installation
+
+Please install first [PlatformIO](http://platformio.org/) open source ecosystem for IoT development compatible with **Arduino** IDE and its command line tools (Windows, MacOs and Linux). Also, you may need to install [git](http://git-scm.com/) in your system.
+
+For the **default** board, the `M5StickCPlus`, only clone this and upload firmware via USB cable with a simple command:
+
+`pio run --target upload`
+
+or import the project in VSCode and build and run it.
+
 ## Box
 
 Is a basic box - hat for these devices, for example M5StickC or M5StickC-Plus, also should be work in M5CoreInk device.
@@ -57,7 +67,9 @@ Also in [Thingiverse](https://www.thingiverse.com/thing:6033436).
 
 ---
 
-## Credits
+## Thanks to
 
-https://github.com/thijse/Arduino-DCF77 (Old library)  
-https://www.seikowatches.com/instructions/html/SEIKO_8B92_EN/CWVVSYxxhbpilh
+@felmue to fix a sporadical crash.  
+@jcomas for the help and docs on https://t.me/esp_es  
+The old [DCF77 library](https://github.com/thijse/Arduino-DCF77)  
+The [Seiko documentation](https://www.seikowatches.com/instructions/html/SEIKO_8B92_EN/CWVVSYxxhbpilh)