Recent content by jubal81

The grounding scheme really makes all the difference. Also, here's my reenactment: "Hmm, I don't have any fuses on hand. This'll sort it for now ...."

Whoa. That's a bigun'

The resistor goes in series with the clipping schottky diodes. The FV will be just about the same as Germanium diodes, so you don't need any other modifications to the circuit.

Same boat. No app for OSX is the main reason I never pulled the trigger on one of these. Really nice work!

Realized I needed another ground pad so other bypass options could work. It's lined up so all you need is a ribbon cable for either option. The buffered VREF pad is moved off to the side since it's per-case use.

Dude, looks damn sweet inside and out. Nice work!

Damn that's nice!

I tightened up the layout and added a buffered VREF using an ne5532 - one half for the bypass and buffer and the other out to a pad for external use. The opamp is a basic part and only 12 cents, so I figured - why not? I also added a slot under the DC jack so if you're using an...

Have you tried an LT1054? If you do, lift pin 1 so it isn't tied to the power rail.

With the fancy opamp it should be about the same cost as a relay setup. I've tried another Analog devices debounce IC before and it worked well. They're awful pricey, though. I actually came up with the 4053 scheme earlier this year for a looper-type project I was considering. The three...

I recently built some pedals with buffered bypass and it's smooth and quiet enough I've decided to stop using relays altogether. The I/O PCBs you guys have been doing got be inspired so I thought I'd try one with an Attiny and TMUX4053 electronic switch.

What a find. That's a pretty good circuit. Bootstrap for input impedance. Feedback on the JFET gates to tame distortion. It's a Rolls Royce compared to the Maestro.

Can't believe I found it, but this jogged my memory about an EDN article using a 4049 to make an opamp. A true op-amp made from inverters

Yep. Same trick you see in phaser circuits.

@Aleph Null have you tried adding resistors in parallel with the LDRs? If you haven't, maybe give 100K or 200k a try for each one.