La Skala Arduino controlled ladder attenuator

Posted on Wednesday, June 1st, 2016 in Arduino, by DP


Dimdim has designed and built his own stepped ladder attenuator, controlled by an Arduino:

A few years ago I had an encounter with a ladder volume attenuator. I loved hearing the relays clicking away as they dialed-in the desired attenuation.
Ever since then I wanted to design and build one for myself. The years passed, with other more urgent projects taking priority, but I always had this thing stuck in the back of my mind. I was doing my research at a very slow rate. Slow, but steady. I came across a number of ready-made ladder attenuators, such as the RelaiXed2, the one from AMB, Vicol, and others. I also came across some uC source code, but nothing ready-made for an Arduino.

Project info at Dimdim’s blog.

This entry was posted on Wednesday, June 1st, 2016 at 12:08 am and is filed under Arduino, You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

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Recent Comments

  • Drone: The LM7171 used in this very simple design can be simulated in LTspice with reasonable results at 10MHz using the non-encrypted PSPICE model from TI...
  • Jon Jackson: I would be interested in 1 or 2 of your circuit boards. Jon
  • Max: An actual Saturday "detector" built with the same hardware would use the precisely timed slightly varying length of the day (and some built-in astronomy data)...
  • KH: In the old days, these things remained on paper forever as whimsical scrawls. Today, they are brandished about on blogs for the entire world to...
  • KH: So he doesn't really know what he's doing. Yawn. It's sensor-controlled. It's not an oscillator. A leaf covers the window, you're toast. TLV3702? Overkill. The...