This is hopefully the list of all parts I needed. For better orientation it is devided over multimple subassemblies

Power supply and basic elements

• 9V regulated power plug (Main Power input)
• prototyping PCB board
• Wires, double wires and ribbon cables
• 2 port contact terminal or 9v power socket

core processing elements

(Needed to test the software)

• arduino nano
• SI 470x Radio Module
• 8x8 LED Matrix board with max7219 driver
• 5 wire connector cable
• photodiode
• 10 k Resistor
• encoder switch with button function
• button (Easy to hit)
• switch with tight movement
• cheap earphone (need just the cable with the plug as antenna an input to the amplifier)

Audio amplifier

(Needed to hear anything without earphone)

• lm7805 voltage regulator
• 100nf capacitor
• 470nf capacitor
• lm386 operations amplifier
• 20k potentionmeter
• 100nF capacitor
• 2x 100uF capacitor
• Speaker (8cm diameter)
• 2 port Contact terminal

Housing

(Needed, so you dont fall into your electronics at night)

• plywood 4-6mm of your favourite kind
• green light filter (to reduce overall brightness of the red led)
• Anything to hold everythin together (Scews, nuts, glue etc)