Usb magnifier

Great bit of kit, bought from Ebay, but plastic lens was very poor.
knoba - usb magnifier

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Lens taken from broken camera, ground diameter with diamond disk.
knoba - usb magnifier

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Maplin drill converted cable entry to 2.5dc connector.
knoba - usb magnifier

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Optic holding flange (white plastic); increased the depth to suit new lens with diamond disk.
knoba - usb magnifier

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My “goto” tool for component markings.
knoba - usb magnifier

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knoba - usb magnifier

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Solder fume extractor mk3

Xmas present for a jeweller, it does need a new front grill making…
knoba - solder fume extractor mk3

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120mm computer fan – 12vdc – Noise 40dB @ 60cm – Power 1.8w
knoba - solder fume extractor mk3

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5.5 X 2.1mm dc connector, 240vac psu. Fan can be bench or shelf mounted.
knoba - solder fume extractor mk3

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knoba – Solder Fume Extractor Mk1

knoba – Solder Fume Extractor Mk2

duckduckgo.com – carbon cooker hood cut to size

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Tgp110 pulse generator fix

2nd hand purchase…
knoba - sunglass modding

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7905 negative voltage regulator, kaput, easy fix.
knoba - sunglass modding

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knoba – Thurlby Thandar Tgp110 Pulse Generator Service Manual – 2017.pdf

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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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