Add images for hardware components in README.md

arduino/README.md

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 A game controller using a Seeed Studio XIAO nRF52840 Sense board that emulates a Bluetooth keyboard.
 
 ## Hardware
-- 1 pcs [Seeed Studio XIAO nRF52840 Sense](https://www.seeedstudio.com/Seeed-XIAO-BLE-Sense-nRF52840-p-5253.html) ![XIAO nRF52840 Sense](XIAO_nRF52840_Sense.png)
+- 1 pcs [Seeed Studio XIAO nRF52840 Sense](https://www.seeedstudio.com/Seeed-XIAO-BLE-Sense-nRF52840-p-5253.html)
 
-- 9 pcs [push buttons](https://rpishop.cz/komponenty/6128-pimoroni-cerne-arkadove-tlacitko.html) connected to pins D1-D6 and D8-D10. ![Push_buttons](Push_buttons.png)
+    ![XIAO nRF52840 Sense](XIAO_nRF52840_Sense.png)
+    
+    ![XIAO nRF52840 Sense Rear](XIAO_nRF52840_Sense_Rear.png)
 
-- 3 pcs [cables with Jack 3,5mm mono](https://www.kabel.sk/kabel-3-5mm-mono-m-m-1-5m-cierny-p21091) ![Cable_with_jack](Cable_with_jack.png)
+- 1 pcs [Battery Small](https://techfun.sk/produkt/li-pol-bateria-mala-rozne-typy-do-1000mah/)
+
+    ![Battery Small](Battery_small.png)
+
+- 9 pcs [Push Buttons](https://rpishop.cz/komponenty/6128-pimoroni-cerne-arkadove-tlacitko.html) connected to pins D1-D6 and D8-D10. 
+
+    ![Push Buttons](Push_buttons.png)
+
+- 3 pcs [cables with Jack 3,5mm mono](https://www.kabel.sk/kabel-3-5mm-mono-m-m-1-5m-cierny-p21091) 
+
+    ![Cable_with_jack](Cable_with_jack.png)
+
+- 6 pcs [Panel Mounting 3.5mm Mono Jack Socket](https://www.rapidonline.com/bkl-72314-panel-mounting-3-5mm-mono-jack-socket-with-switch-50-1508) 
+
+    ![Panel Mounting 3.5mm Mono Jack Socket](Mono_Jack_Socket.png)
+
+- 1 pcs [Power Switch](https://techfun.sk/produkt/jednoduchy-prepinac/) 
+
+    ![Power Switch](Power_Switch.png)
 
 ## Features
 - **Bluetooth LE Keyboard:** Connects to any computer or mobile device as a standard keyboard.