I just finished my overdrive pedal 🙂 It can be powered off a 9v battery or wall adapter. The control across the top from left to right are hotness, tone, gain. The bottom two knobs are variac and volume.
The “Hotness” control allows fine tuning of the internal amplifier to accommodate different guitar pickups. Basically it compensates for different pickups to allow for a nice variety of tone.
Tone and gain should be pretty easy to understand for most.
Variac allows me to adjust the input voltage powering the logic IC used in this overdrive pedal. I can starve the input voltage to give it some subtle changes in tone.
And the volume… lets me adjust the volume 🙂
Anyway, I don’t have labels for it and am considering a name for it. Perhaps… Thundersqueak 🙂
Today I decided that I wanted a new overdrive pedal, something that I couldnt readily buy. A new sound. After digging around a bit and looking at the jabillion (yep jabillion) tube screamer clones out there, I came across this little circuit at http://www.runoffgroove.com/ubescreamer.html The “UBE SCREAMER”.
Unlike other overdrive pedals, this one is based on a logic IC instead of your standard opamp.
Someone was kind enough to post their results of this build on youtube If you are interested in taking a peak on what this little circuit can do..
I am going to be implementing a Volume, Gain, Tone, and Variac pots (see circuit) , as well as a 3 way rotary switch to allow for different types of guitar pups and sounds. Another addition is a true bypass switch and the ability to power it off a 9 volt battery or power supply, for this I am implementing a DPDT switch. I had all the parts for the main board in my junk box, so this is a total win 🙂
Now just to find a nice enclosure for it.
This is the cleanest my workbench has been in a long time, I figured I would take a picture of it before I clutter it up again with a new project.
This is a quick snapshot of my LCD, when I posted the NES top loader mod video someone was concerned that the image was not bright enough or had dimmed after the mod. Taking a picture of a brightly lit screen is a bit difficult, but here it is… at least as close to it as I can get to what I am seeing in person!
I performed the NES mod on a friends console as well, this is how it looks on his CRT. His camera did not like his CRT so I apologize for the blurry photo but you can definitely see how bright the image is. He says it is MUCH sharper in person.
As you can see, there is no issue with brightness 🙂 Both pictures in person are bright and very sharp 🙂