This is a audio synth based on a NE556 IC dual timer. it uses 2 potentiometers to control the frequency and oscillation of the sound. This project is made to recreate the tones atari retro games made and by rotating 2 knobs, you can alter the sound to how you want it! motivation - I made this project because it is comparatively easier to make then other projects because this is my first ever hardware project. I also love the game console theme of it and also how it is not expensive to produce - what i thought. cause the pcb in my country is like 30$ gng, im cooked.d.
BOM-- https://docs.google.com/spreadsheets/d/1ZWKw14_xK2crBy8iU5RnvvLDdxu0tYG4yVFG7IDB0m0/edit?usp=sharing
pls go here
PCB, https://jlcpcb.com/?_t=1777363531989&spm=jlcpcb.Public.2001&up_spm=Jlcpcb.Loginpage.1003age.1003, $30 Editor File--
assembly instruction-
first, please solder all the components on to the pcb. then solder the leads of the speakers to the pins on pcb. then solder the leads of the battery to the pins on the pcb. then put everything in the custom enclosure.re.
| Name | Unit | Price (INR) | Total Price (INR) | Link | Total (USD) | Notes |
|---|---|---|---|---|---|---|
| 14 Pin DIP IC Socket Base Adaptor | 3 | 4.61 | 13.83 | Link | 0.15 | |
| 10nF (0.01uF - 2E103J) - 250V Polyester Film Capacitor | 4 | 3.17 | 12.68 | Link | 0.13 | cheapest in the UAE |
| 100nF 400V DIP Polyester Film Capacitor | 3 | 4.67 | 14.01 | Link | 0.15 | |
| 0.5W 28mm 8Ω Trumpet Speaker Mini Audio Buzzer Driver | 2 | 10 | 20 | Link | 0.21 | |
| 4mm SPDT 1P2T Slide Switch | 3 | 4 | 12 | Link | 0.13 | |
| I Type 9V Battery Connector Cable | 2 | 28 | 56 | Link | 0.59 | |
| NE556N IC - Dual Timer IC | 2 | 23 | 46 | Link | 0.49 | |
| 1kΩ Resistor (CFR-25JB-52) | 7 | 1.56 | 10.92 | Link | 0.12 | |
| 500kΩ Trimming Potentiometer | 3 | 36 | 108 | Link | 1.14 | |
| 470Ω Resistor (CFR-50JT-52) | 10 | 1.47 | 14.7 | Link | 0.16 | |
| PCB (JLCPCB) | 5 | 75.72 | 378.6 | Link | 4.00 |
Total Cost (INR): 752.51
Total Cost (USD): 7.95
Shipping: $27.57
