Mini pedal - overdrive distortion effect

### **Problem fixes:** 1. Fixed the small bug that the knob could not be plugged in; 2. Fixed the incorrect correspondence between the foot nail symbol and the package diagram number. **2022.4.17** Some minor problems in use, which will be optimized after the final defense: 1. The input port should be on the right, this version is currently on the left; 2. The SMD LED is planned to be changed to a direct plug to facilitate the casing design. Instructions; 3. Plan to add LED display of switching status--- ### **1. Project Introduction** At first I wanted to buy an effector, but after walking around Kaiyuan Plaza, I found that no one had made an effector. ? ! I happened to look at the relatively simple circuit and wanted to try an analog circuit, so the first overdrive distortion effector on the Lichuang open source platform, which has a relatively simple circuit, was born. Thank you very much to this CSDN brother: XieKKK-Related information and production sharing: https://blog.csdn.net/qq_41342525/article/details/105716861 --- ### **2. Functional features** * 6.35mm Two-core audio plug input* 6.35mm two-core audio plug output* 3.5mm three-section headphone plug output* 3PDT pins switch dry and wet sound* Three knobs: (left->right) gain Odrive, tone Tone, volume Volum * Support 9V DC/12V DC battery powered --- ### **3. Circuit introduction** ![SCH1.png] * AMP—Overload distortion processing channel: LM741CN operational amplifier* Dry sound channel* Switching module* Power supply POWER module* Input The output module looks very simple. The analysis of the overload distortion circuit module can be found here: https://blog.csdn.net/qq_41342525/article/details/105522483?spm=1001.2014.3001.5502 [The circuit diagram of the distortion part, in fact, I I still don’t understand it completely hahaha, I will simulate and analyze it later] --- ### **4. Physical display** ![3.jpg] --- ### **5. Shell design** Follow-up redesign