Shoving those shiny plated pins with force into those cheap sockets, and heaving them out like I'm trying to become the King of Britain makes me grimace every time. Every "standard" female pin header I've tried is too tight on the larger-than-breadboard-cable pin shafts, and the electrical contact surface begins too far down into the socket to reliably contact. I LOVE the AEM sockets and patch cables they make a secure, reliable connection every time (likely due to the tapered collar around the base of the pin) and withdraw with minimal friction. ![]() Fingers crossed for final printing.īut in addition to the height, there's the issue with fit. But I digress.) I think that the issue here is exaggerated, though, as the acrylic panel is twice as thick as the AEM face plates, as well as resting on the case rather than the standoffs. (As long as they aren't priced like the RV09 AEM pots at Mouser, like, what? It's quite the song and dance to find the exact component at a price I can afford, and I certainly can't afford and won't pay $1+ for a plastic pot that I can bulk purchase from China at 8 cents apiece. I second that motion I'd buy a few hundred as soon as they hit the store. Since this video I've added LED indicators on the square wave outputs of the op-amp LFOs, and I'm excited to say that this module will have both some interesting CV and GATE outputs. CV inputs on each are buffered by a summing amplifier that receives a DC offset (blue knob) and an attenuated cross-modulation signal (red and yellow knobs). I'll get more into it once it's finished, but basically this circuit is two op-amp VCLFO triangle waves cross-modulating each other (FM). An LED displaying CV level is visible- many thanks to robertlanger for clearing up my (embarrassingly rudimentary) questions on his LED driver. In this example, the mostly-complete circuit is driving the pitch of a triangle VCO for audio demonstration purposes. It takes some hunting to find the interesting sections, as it's not fully built yet. My apologies for the poor audio this is my second video recorded on my cell phone for public consumption, ever. Here's a quick video of a quite simple experimental LFO: Work is progressing on a few rudimentary modules that possess interesting design challenges (I'm excited to get into this, once my Clock Counter module is finished), as well as some more experimental circuits. I've also been advancing a few different module designs. ![]() So, once the lab tech comes back to work and runs the laser cutter (they don't let students play with the big toys alone), I'll be able to rig up some patches and spit out some demos. Prelim and attempt #1, sitting on attempt #2 stock:Īll demo videos for my DIY modules are actually waiting on front panels I'm not comfortable throwing a bare-wire, naked module onto my main synth because the possibility of a loose patch cable end touching something it shouldn't. Preliminary tests were cut from 3mm clear acrylic shop cutoffs, and attempt #1 used "1/16 inch" but actually 1.2 mm paper chipboard (like a crappier, larger-particle MDF, basically). Attempt #2 (and thus depleting my project budget for the month) will center around this "1/16 inch" thick MDF (wood-based) that actually measures ~1.8 mm instead of the desired OEM AEM 1.5mm. DXF files for laser cutting front panels on my university campus, and selecting stock material for the same. Most of this work has been not very exciting for spectators, such as tweaking feature placement on. ![]() I've been toiling in the background, not saying much here for the past several weeks.
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