PCB+SMT assembly, from $2: https://jlcpcb.com/?ref=greatscott'>https://jlcpcb.com/?ref=greatscott
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Andreas Spiess video:    • #279 How to debug Arduino Projects (G...  
Class D Audio Amplifier video:    • DIY Class D Audio Amplifier  
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More project information (schematic, pictures, code.....) on instructables: https://www.instructables.com/id/DIY...

Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
2x 433MHz Transmitter: https://s.click.aliexpress.com/e/_dZW...
2x 433MHz Receiver: https://s.click.aliexpress.com/e/_dYg...
2x TLC555 IC: https://s.click.aliexpress.com/e/_dTr...
2x MCP602 IC: https://s.click.aliexpress.com/e/_dTv...
2x TC4428 IC: https://s.click.aliexpress.com/e/_dUo...
1x Mic: https://s.click.aliexpress.com/e/_dSP...
1x 250k Trimmer: https://s.click.aliexpress.com/e/_dTF...
Resistors: https://s.click.aliexpress.com/e/_dTP...
Capacitors: https://s.click.aliexpress.com/e/_dU4...
https://s.click.aliexpress.com/e/_d7d...
2x Micro USB Breakout PCB: https://s.click.aliexpress.com/e/_dWa...
2x 1500uH Inductor: https://s.click.aliexpress.com/e/_d73...
2x Speaker: https://s.click.aliexpress.com/e/_d7x...

In this project I will show you how to use generic 433MHz RF modules from Ebay in order to create a functional WalkieTalkie. That means we will compare different RF Modules, learn a bit about a class d amplifier and finally build the WalkieTalkie. It can be powered by a normal powerbank for around 130 hours and features a range of around 15m. Let's get started!

Thanks to JLCPCB for sponsoring this video
Visit https://jlcpcb.com to get professional PCBs for low prices

Music:
2011 Lookalike by Bartlebeats