sp-codes PeerTube

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sp-codes PeerTube episodes

  • Two Vintage Polish Flashlights

    Fix'em & Show'em! Two 1970s vintage Polish flashlights with a once popular 3R12 battery - both need simple fixes, and one ends up with an unexpected twist.

    0:00 New Intro!

    1:25 The 3R12 Battery, Teardown and Story
    4:33 Green Signaling Flashlight
    8:40 Blue Flashlight
    13:00 Battery and Switch Fix
    14:00 Oops!
    15:00 Looking for Explanations
    17:18 Afterword

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics or via PayPal https://paypal.me/keritech

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    #electronicscreators #keritechelectronics

    0 min
  • Keritech DD-12 "Dirty Dozen" Amp - Part 8: Plate Power Supply Wiring

    Plate power supply wiring in the DD-12 amp.

    0:00 Intro

    2:30 Rectifier Wiring
    14:50 Resistor Mod
    17:10 Rectifier Switch Wiring
    24:45 Filter Cap Wiring
    32:15 Resistors
    42:40 Rectifier Tests and Measurements
    48:30 Afterword

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • ZX Spectrum +2 - Fixing the Design Errors, Modding and Nerding!

    Modding a 1986 ZX Spectrum +2 (the gray transitional model made by Amstrad and rushed for holidays), with a nasty hum problem coming from the tape deck.

    Mods and fixes done:

    -T4, T5 and T7 reversal (ie old PCB design not meant for 2N3904)
    -AV out mod: LK6 (vertical sync) changover to LK7 (audio) on pin 3, making it possible to use the DIN port as a RGB+comp sync+audio (for EuroSCART enabled TVs) using a 8-pin DIN connector, or a very simple composite video+audio out using a 3-pin DIN connector
    -signal modulation mod: move C31 to the composite video encoder's output
    -tape deck amplifier power cutoff mod (the Keritech version with no reed relay) which stops the horrible hum when tape is not in use
    -AV cable mod for EuroSCART (Peritel) with audio on DIN connector, freeing up the 3.5mm jack
    -full electrolytic cap replacement

    0:00 Intro

    3:33 Initial Test
    4:36 Disassembly
    10:25 Transistor Reversal Fix
    26:08 A/V Jumper Mod
    28:48 Power-Up Test
    38:48 A Mistake?
    40:05 Introducing the Test Gear Cam
    42:05 A/V Cable Mod
    49:37 The Silent Part
    52:55 Still Not There!
    54:04 Camera Died, Mike Died, Lost Footage
    1:01:19 Let's Play Global Thermonuclear War!

    Cleaning the holes with a syringe needle... Powered desoldering gun is so much better, but I don't have one.

    This video was a pain to make, bench cam freezing and mike going silent. Will follow up with a more in-depth explanation of mods, schematics etc.

    At one point all audio disappeared but the video footage was good...

    Then the cam feed froze again. 54:04 shows missing screw fix and re-assembly. Have a listen to the music project I once participated in!

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • Keritech Electronics - Inside the Lab!

    Lo and behold, the vacuum tube witch shows her lair! The most discombobulated electronics lab on the Eastern side of Atlantic.

    The place is a single room (not counting some storage in the fallout shelter turned basement, a.k.a. the Vault) in an apartment on 5th floor in a tenement house smack in the middle of Gdańsk, Poland. Carrying up all that stuff up the stairs... it fills you with determination. This is where I work, make videos and live together with my two lovely darlings. Apart from the lab, we've got an art atelier, a bedroom, one extra room, a bathroom and a kitchen.

    0:00 Intro

    1:00 Entering
    1:30 Backup Bench and Tool Board
    2:47 Long Part Storage
    3:10 Some Gear
    4:07 Vault-Tec Electronics
    4:31 rpi2caster Prototype
    5:05 Network Infrastructure
    5:35 Exhibition
    6:50 Parts Storage
    7:25 Library
    7:43 Science & Technology Shelf
    8:15 Discombobulated Projects
    8:55 Hi-Fi System No2
    9:25 Computer Workstation
    9:57 Hi-Fi System No1
    11:30 Stalemate Resolved!
    12:28 More Projects
    12:55 Really a Real Reel To Reel
    13:05 Nixie Tube Multimeters
    13:30 Meratronik E316 RLC Bridge
    13:38 Drill & Compressor
    13:50 More Projects
    14:06 The Bench!
    15:45 Video Gear
    16:55 The Geeky Stuff
    17:27 2nd & 3rd Speaker Systems
    17:48 Teeny Tiny Monotype Stuff Collection
    18:04 "Radioactivity" Lamp
    18:25 My Only Tektronix So Far, Mini-4 and OS-102 Story
    19:15 Record Collection On A Budget
    19:30 Some More Test Gear
    19:40 Archives
    19:50 Gear Cart
    20:15 Sewing Machine Stand
    20:40 Lab Overview
    21:00 Koko the Purretty Meowsome Lab Assistant
    21:23 Hacked WD3P Vacuum Cleaner
    21:40 Under the Benches
    22:28 Wire Storage
    23:10 Dremel
    23:38 12VDC Distribution & Ethernet Switch
    24:25 Small Hardware Storage
    26:00 One More Look

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • Keritech DD-12 "Dirty Dozen" Amp - Part 5: Making the Electrolytic Cap Clamp

    How I made a mounting clamp for the multi-section electrolytic cap in my DD-12 guitar amplifier project. Showing you the ins and outs of making a seemingly easy part... it's not free from pitfalls!

    Haven't installed these pots though. We'll do it next time.

    0:00 Intro

    1:36 Local electronic parts store shutting down...
    3:00 Materials, Tools and Plan
    5:30 Where's the Kink Palculator when you need it?
    7:00 Calculations and Design
    12:00 Drawing the Template
    20:50 Cutting the Template (don't mind the cough!)
    23:10 Oops...
    24:00 New Template
    32:20 The Moment of Truth!
    37:12 Testing on the Amp
    38:00 Making the Clamp
    39:45 Corner Cutting Tech Tip
    49:00 Testing and Finishing
    54:30 Assembly
    1:04:05 Reminder
    1:06:00 Pot Mounting Hole Hack
    1:07:50 Final Words and Video Shenanigans

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • Keritech DD-12 "Dirty Dozen" Amp - Part 7: Heater Wiring

    Wiring the tube heaters in the DD-12 amp. Sharing some tricks along the way.

    0:00 Intro

    0:40 Preparation
    1:35 Wire Twisting
    3:35 Insulation End Melting Protection
    7:15 Pilot Lamp Wiring
    12:20 Mains Transformer Connection
    17:00 Rectifier Tube
    18:30 Preamp Tubes
    38:10 Output Tubes and Phase Inverter
    52:00 Getting Ready...
    54:50 Glowup!
    55:55 Afterword

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • Keritech Stream - The Weird Stuff Teardown Edition

    Like that crazy Aussie bloke at @EEVblog says: don't turn it on - take it apart!

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics or via PayPal https://paypal.me/keritech

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    #ElectronicsCreators #Keritech #Electronics

    0 min
  • Keritech DD-12 "Dirty Dozen" Amp - Part 6: Mains and Controls

    Continuing the Dirty Dozen amp build. In this episode, some hardware and all the mains wiring.

    0:00 Intro

    1:00 Power Connector
    5:30 Plate Supply AC
    9:30 Mains Wiring
    11:30 Grounding
    22:18 Mains Switch
    35:00 Hardware Mount (Audio Dead!)
    37:33 Audio is Back
    40:23 Audio dead again...
    45:50 Chickenheads
    47:50 Rectifier Selector
    49:30 Tubes
    51:45 Afterword

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min
  • Keritech DD-12 "Dirty Dozen" Amp - Part 3: Transformer Hole Cutting

    The third part of the DD-12 amp build series. Time to cut and file the holes for the power and output transformers, as well as the mains socket.

    Raw and uncut workbench action! Best watched at twice the normal speed.

    0:00 Intro

    1:00 Fretsaw
    3:50 Mains Connector Hole
    12:40 Filing
    17:00 Output Transformer Hole
    28:15 Filing
    33:33 Mains Transformer Hole
    51:25 Filing

    Support me on my Patreon page at https://www.patreon.com/KeritechElectronics

    Instagram - https://www.instagram.com/KeriSzafir
    Hackaday - https://hackaday.io/keritech

    0 min

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