PCB Fabrication up and running

Designed new PSU for the WickOSC, Just etched it now, seems like a complete success. Whether or not the circuit actually works it yet to be seen. Expect to get it drilled and populated in next couple of days, full write up will appear on Analogablog. Pics for perusal...(notice the fine detail achievable with this method: those voltage labels are tiny but perfectly legible!)

CAD: Drag-Kart Update - Front Suspension, Steering + Stuff

Get on! Drag-Kart design exercise is coming along nicely. The frame is taking shape, although looking a little heavy, and the seat is currently a surface-mesh translated from a Google's Ketchup model of a Lancia by ..., which I'm gradually building into a set of solids so I can round the edges off and generally give it a more Bride LoMax shape. Adding detail from front to back, the suspension setup is finished, complete with silly negative-camber, but I have made a 'shim-block' to bolt between the shocks if you wanted less angle on the wheels, which you probably would. The steering is also complete, minus the steering-wheel [that dark bar isn't connected to the frame] and the pedals are inwith the beginning of the throttle + brake cable ready to be run back to what they control... A brake-caliper is nearly ready, but the engine will be the final task. It's not clear yet whether it will be a single or twin-cylinderbadboy, but it WILL be 2-stroke, elaborated from the TurboCAD tutorial for, well, some kind of engine, maybe even a pump-housing or whatever it is.

Silence of the Pigeons...

Our friendly neighborhood sparrow hawk dropped in to our garden today clutching a huge pigeon. It must have been starving. The pigeon was alive for a while, but as it was sure to die anyway we thought it best to let nature take its course and save the hawk from going hungry and maybe dying too. It spent about an hour shredding the pigeon up like a Peking duck. Then for a display finale the hawk flew off with the carcass, only to deposit it atop our back fence with its wings splayed out like the cop in Silence of the Lambs. By the time we discovered the last bit though I'd already been to take these photos off the camera so dashed upstairs to get it. I came marching back up the garden as proud as a little toy soldier, only to find that the hawk, or the neighbour's cat, had taken it away already. Gutted... it had been.

CAD: Meter-Board 'Basso Profilo' version

Chopped the LEDs down, they now sit 2mm off the board. The resistors are tilted at 45 degrees and leave ample headroom for the thickness of the faceplate. The ribbon header also leaves some headroom for the faceplate, about 3mm, so moving it to the other side of the PCB is unnecessary, it would nearly double the height of the board.

That's 8mm to the top of the LEDs, so subtract from it the faceplate thickness if they are to sit flush. Probably 2mm for alloy, 3mm for plastic.

CAD Model: RAYS TE37 Alloy Wheel

There just doesn't seem to be any guides for car modeling in proper CAD and no full model samples to download, just 2D blocks. I'm fed up of picking apart imported .3ds surface-meshes so, as I get my head around TurboCAD more, I've started to devise some basic ways to make my own. It might take a bit longer, but new solids look so much smoother than the meshes and are infinitely easier to edit and render.

Thought I'd start with something reasonably simple like an alloy wheel, so I've been working on this 1:1 model of the almighty RAYS Racing TE37 [19x10.5], which you will recognise if you're into tuned cars. My work with curved shapes has taken a serious leap forward in this sketch and I've picked up a few rendering skills too, like the decal-wrapping, but I think moving it into formZ or Blender [or Bunkspeed hopefully if I can get it] is needed for a pro finish.

Will post a tutorial soon.

WickOSC VCO Schematic nearly complete

Finally sat down and worked this one out on eagle. It's the setup I have at the minute on breadboard plus a sawtooth output and better PWM (old PWM output was out of phase with others and wrong amplitude). Gonna wire up the modifications on sunday and add the 1V/Oct converter to the Schematic (if it works okay) then it's board design time. Planning to have two of these, Plus a third slightly modified LFO version and a white noise generator all on the one board.

Next stop after that....Moog style filters!

Master Meter Faceplate - 2nd Design

Meters/faders could slide out the front, card out of the side somehow. Might weigh a ton though.

Master Meter in DJ Controller Case - First Design

A quick render just to show some ribbons and case placement. This first design has the meter-board mounted directly to the back of the faceplate with rods. The LEDs sit flush to the front of the faceplate in a rectangle hole with about 0.1 of a mm around them.

Note: I've put the headers facing in opposite directions so the ribbon runs top-top, bottom-bottom without having to be crossed over, which is needed if the headers are facing the same way above and below one another. The latter would probably be the most efficient way, shortest ribbon routes and all that, but I haven't figured out how to have them cross over in CAD yet. Also, the ribbon routes from the meter/fader combos run front-to-back so it might be better having the logic-board that way round after all... jeez so much to consider.

The next design, coming up coming in, will have the meter-board mounted with rods to its own bespoke faceplate, which will mount onto a bigger aperture in the main faceplate. This way the meter-board can be lifted out separately from the front of the case like the crossfader unit [also on its way, i'm using a Panasonic EWAP1, dunno what yours are]. This might be the best bet for the meter/fader combo units too.

essayyy

LED Master Meter CAD Model

The mounting holes for the resistors are the same distance apart as the LEDs etc so I assumed you'd have them going vertically, as there is room if the LEDs are up off the board.

Master LED Meter breakout

First draft of this shit



Does what it says on the tin. GND plane on the bottom in blue, red is signal traces on the top.



Technically it can be done on one side, but to play it safe... double side it.



1.20"x1.30"(1.60" with headers) (0.1" spacings)

Funk The Matrix : Case Design

Yeah I've probably gone wildly over on depth, but the PCBs stack vertically behind one another.

Delta S4 CAD Model... still a way to go

Funk The Matrix : All Analogue Pattern Sequencer

Control-board and test faceplate, component details to follow. As you can see the slide-switches don't come up as high as the bush-mount on the rotary-switches, any suggestions East on some risers or something?

In-Case Alignment Part 1

Case is 12" wide, 10" deep and 2" high.

CAD PCBs Ongoing

Scale 1:1

Accurate to within 0.1mm