Greetings GroupDIY Members,
At first, I'd like to convey my sincere appreciation to Mr. Jules and Mr. Rogs for their remarkable contributions in creating Opa Alice and Opic circuits.
When I first find out about Opa Alice, I was really excided to try it. Mr. Jules already provided detailed, step-by-step instructions on Instructables. However, I got stuck at the premade PCB, realizing that its cost, including shipping, surpassed what I could manage for a DIY alternative. With limited knowledge in circuit or PCB design, I began searching for a comparable preamp solution.
My searching led me to the Opic circuit, a simplified veroboard version by Mr. Rogs, with a comprehensive PDF guide that could help any newcomers like myself. This helped me to successfully assemble my very first microphone preamp circuit (with a hex inverter).
After a year or so I found a video explaining easyeda. I didn't know how easy it was creating PCBs from diagrams. I couldn't resist making these pcbs. I already had some singlesided PCB boards (Doublesided seemed bit harder for toner transfer and etching) so I went with singlesided design.
Witnessing the community's supportive environment and the willingness of members to share their designs, I find myself reaching out for assistance. As a relative newcomer, I'm a bit scared etching these boards. I seek your guidance so that I can fix mistakes that I made.
Kindly inform me if this post does not go with the forum's guidelines.
update: Hex inverter and opa alice
Warm regards,
Zawad Tahmid
