Rlc switches

Resistor, Capacitor & Inductor selector switches
knoba - Rlc switches

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1p12t rotary switches, dupont clone connectors for breadboarding
knoba - Rlc switches

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Link to cad file below
knoba - Rlc switches

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knoba – Rlc switches – Facia – 2017.dxf

knoba – Electronics workbench

knoba – Breadboard Patch-leads & Peripherals

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Breadboard Patch-leads & Peripherals

2.54mm 1/10″ male to various connectors
knoba - Breadboard Patch-leads & Peripherals

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knoba - Breadboard Patch-leads & Peripherals

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2.54mm 1/10″ male to various peripherals
knoba - Breadboard Patch-leads & Peripherals

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knoba - Breadboard Patch-leads & Peripherals

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knoba - Breadboard Patch-leads & Peripherals

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Dupont clones
knoba - Breadboard Patch-leads & Peripherals

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knoba - Breadboard Patch-leads & Peripherals

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Amphenol – Interconnects

Molex – Interconnects

JST – Interconnects

Freecycle – Interconnect recycling

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Ac Power Supply

Aluminium frame pattern for recycled multitap transformer
knoba - Ac Power Supply

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Transformer core shaping buck
knoba - Ac Power Supply

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Frame made
knoba - Ac Power Supply

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knoba - Ac Power Supply

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Donor psu…
knoba - Ac Power Supply

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Ac system internals in
knoba - Ac Power Supply

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240vac @ 50Hz in: 1, 3, 6, 9 & 12vac @ 50Hz out
knoba - Ac Power Supply

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Illuminated the meter.
knoba - Ac Power Supply

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New laminated fascia (cad file below)
knoba - Ac Power Supply

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New laminated meter scale (cad file below)
knoba - Ac Power Supply

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Schematics (Fritzing file below)
knoba - Ac Power Supply

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knoba – Ac Power Supply – Fascia – 2016.dxf

knoba – Ac Power Supply – Meter Scale – 2016.dxf

knoba – Ac Power Supply – Schematic – 2016.fzz

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Test lead rack

Copper, brass, stainless, aluminium. It rotates.
knoba - Test Lead Rack

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Aluminium top tray & forming buck
knoba - Test Lead Rack

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Buck formed. Aluminium top tray formed
knoba - Test Lead Rack

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Brass upper rack and shaping forms
knoba - Test Lead Rack

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Complete assembly
knoba - Test Lead Rack

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Machined & beaten copper bolt, tray, turned copper spacer
knoba - Test Lead Rack

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Drive screws, machined & shaped brass rack piece
knoba - Test Lead Rack

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Machined aluminium wheel, copper spiky things, brass & stainless tynes, copper nut, m6 grub screw
knoba - Test Lead Rack

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Copper spiky things
knoba - Test Lead Rack

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Assembled
knoba - Test Lead Rack

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Upside down
knoba - Test Lead Rack

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Fitted to my electronics bench
knoba - Test Lead Rack

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Laden with sumptuous test leads
knoba - Test Lead Rack

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Tray carrying nik-naks & bits
knoba - Test Lead Rack

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Cad file below
knoba - Test Lead Rack

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knoba – Test Lead Rack – 2016.dxf

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Component tester

Aka: Octopus, Curve Tracer, Analog Signature Analyser…
knoba - Component tester

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Made from recycled 240Vac “wall wart”.
knoba - Component tester

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Breadboarding the I/V circuit.
knoba - Component tester

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Breadboarding the internal 1A fuse and led indicator circuit
knoba - Component tester

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240V:10v transformer source and internals.
knoba - Component tester

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Measuring out internals and laying out facia
knoba - Component tester

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Making fuse & indicator pcb
knoba - Component tester

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Backside
knoba - Component tester

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All pcbs made and fitted
knoba - Component tester

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Made some test leads, facia done with inkjet printer and laminated
knoba - Component tester

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Compact, no mains leads hanging around…
knoba - Component tester

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BNC’s are 50ohm, 4mm bananas, female pin header.
knoba - Component tester

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Working well… seen testing an LED
knoba - Component tester

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knoba – component tester front panel – 2016.dxf
knoba - Component tester

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knoba – component tester schematic – 2016.fzz
knoba - Component tester

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knoba – component tester front panel – 2016.dxf

knoba – component tester schematic – 2016.fzz

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Resistor quick-pick labels

Ivy labels, marked on both sides, straight off bandoleers
knoba - Resistor quick-pick labels - 01

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Zip-loc bag keeps them all together, allows easy usage
knoba - Resistor quick-pick labels - 02

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Labels brown/burn/smell when res’ers dissipation maxed.
knoba - Resistor quick-pick labels - 03

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Much easier to locate & use, etc.
knoba - Resistor quick-pick labels - 04

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Electric Guitar

20 year old, unfinished project, found on freecycle.
knoba - electric guitar - 01

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It finally has a voice and a lovely, unique, sound range.
knoba - electric guitar - 02

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Fodic neck.
knoba - electric guitar - 03

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I’ve done a lot to this guitar to get it up; hand beaten stainless steel jack port…
knoba - electric guitar - 04

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Custom electrics; 3 x dpdt phase reversal switches, tones on 2 pickups.
knoba - electric guitar - 05

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Non-magmetic 3 series stainless steel, all inlayed.
knoba - electric guitar - 06

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New house guitar. Have some wood inlay to do & more wood carving.
knoba - electric guitar - 07

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A first for me. Wood inlays (white oak)
knoba - electric guitar

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