Tag: runoffgroove

  • UBE Screamer 4069

    UBE Screamer 4069

    I wanted to do something a little more artful as a box. The Joy Division’s Unknown Pleasures has a very iconic image. I don’t know what the secret sauce of this image is but it’s very compelling. From what I read the image appeared in Scientific American 1971 and was described as “stacked plot” of […]

  • 22/7 4069

    22/7 4069

    First build of 2022! This is a 4069 version of RunOffGroove’s 22/7. The original uses the 4049 hex inverter. This the same circuit using the 4069. Both chips contain 6 inverters but the they differ in format and layout. The 4049 is a 16 pin DIP and the 4069 is a 14 pin DIP. One […]

  • UBE Screamer 4069

    UBE Screamer 4069

    This is a version of the UBE Screamer using the 4069 in place of the 4049. Essentially these chips are the same. They both contain 6 inverters. The 4049 is a 16 pin DIP while the 4069 is a 14 pin DIP. Electrically the should the same but the pin arrangement is different. The original […]

  • 22/7 4069

    22/7 4069

    Here is a version of RunOffGrooves 22/7 using the 4069. The original circuit uses the 4049 Hex inverter. The 4049 is a 16 pin dip with 6 inverters. Here is the 4049UBE data sheet. You can see it has 16 pins with 6 inverters. There is a power Vdd pin 1 and ground Vss pin […]

  • Another fail!

    Here is a UBE Screamer with blend knob. I left a resistor out of the mixer and mixed up the Blend and Gain labels.

  • UBE Screamer v2

    UBE Screamer v2

    I made an update to the RunOffGroove UBE Screamer from a suggestion in their notes. This version adds a mix control the blends some of the original signal with the distorted signal. The original uses Rx to set a fixed mix amount. The notes suggest a value of 100K to 470K for this resistor with […]

  • UBE Screamer 1.1.1 build

    Built and tested the new version of the UBE Screamer PCB. Everything is working! Sounds great. This is a good alternative to the standard TS-808 and other overdrives if you’re looking for something a little different. Does great low gain sounds. I built this in a 1590B enclosure from Tayda. I got most of the […]

  • RunOffGroove 22/7

    RunOffGroove 22/7

    I updated my 22/7 PCB. I had these boards made at PCBWay.com. These boards are great quality. Very cost effective. I’m a fan of OSH Park.com. They are good when you want only three boards, are in the US and need quick shipping. The PCBWay boards are very clean, they offer a range of colors, […]

  • 22/7 PCB Order

    22/7 PCB Order

    I just got these PCBs in the mail from https://www.pcbway.comPCBWay.com. I’m impressed with the quality. This is an update of my my 22/7 PCB. I made a couple small improvements. The 22/7 is a CMOS based Big Muff. A very cool and innovative circuit by RunOffGroove.com. Did I mention they just turned 20 years! If […]

  • RunOffGroove.com turns 20 years

    RunOffGroove.com is one of my favorite sites for original stomp box inspiration and innovation. I built my first projects using the schematics and layouts there. The ideas presented are innovative. I’m very impressed with the UBE Screamer and 22/7. You can find PCB projects for those here! The Ruby and other projects are DIY staples!

  • New Boards from PCBWay

    Just got some new boards from PCBWay.com. These are RunOffGroove’s 22/7. This is a Big Muff built around MOSFet inverters in place of the Bipolar transistors used in the standard Big Muff. This is a great sounding Big Muff. If you’ve built Big Muffs in the past you should try this one. The tone control […]

  • RunOffGroove 22/7 Build

    RunOffGroove 22/7 Build

    Here is another 22/7 build. It’s a Big Muff variation. This unique circuit replaces the transistor stages of the classic Big Muff with CMOS inverters. It’s a unique flavor of Muff. CMOS inverters have their own unique flavor of distortion and have been used in many classic pedals like: Craig Anderton’s Tube Sound Fuzz, Way […]