After getting into arduino it can get very costly to get arduino boards for projects and so here is a tutorial how to get to next level by getting all parts from board to a circuit significantly reducing cost.

Step 1: Get an Atmega328 With Arduino Uno Boot Loader on It.

You can get hold on them from aliexpress or banggoog for cheap like 2 dollars each with. bootloader or for 1 dollar without bootloader.

Step 2: Other Parts

Things needed are :
1 Atmega328p with arduino uno bootloader
2 16.000 mhz crystal oscillator
3 2 * 22 or 27 picofarad load capacitors
4 0.1 microfarad capacitor
5 6 pin ttl programmer
6 jumper cables
7 breadboard
8 led

Step 3: Connections

Connections :
pin1 to 0.1 micrograms capacitor
pin 9 and 10 to crystal oscillator
load capacitors if 22 pf from pins 9 and 10 to pin 8
positive end of led to pin 19 and negative to pin 22.