Hardware project

Articles

• (1000) 232 = 2050
• 1000 One Chip Mod: A Built-in NVM
• 12 Volt Modification
• 12 Volt Modification
• 12 Volt Modification
• 12 Volt Modification
• 16K - Fitting it "Under the Hood"
• 192K ZX/TS Laptop
• 2068 & Spectrum Customized ROMs
• 2068 Cassette Connection, Part II
• 2068 Cassette Connection, Part II
• 2068 Cassette Connection: Part II: Loading Tips
• 2068 Colour Adjustments
• 2068 Digitizer
• 2068 Fix Star NX-1000/AERCO Centronics I/F Fix
• 2068 Fix Star NX-1000/Aerco Centronics I/F Fix
• 2068 LOAD Notes
• 2068 Power Supply - Make It Cooler & Quieter
• 2068 Power Supply Problem?
• 2068 Power Supply Project
• 2068 Power Supply: Make It Cooler & Quieter
• 2068 Power Supply: Make It Cooler & Quieter
• 2068 Power Supply: Make It Cooler & Quieter
• 2068 Printer Interface and ROM Card
• 2068 ROM Bypass Board Schematic, Revised
• 24K Internal Non-Volatile Memory
• 24K NVM Inside
• 2K Conversion with 6116s
• 2K to 4K RAM Upgrade - An Introduction to ZX/TS Hardware
• 32K NVM System Revisited
• 32K RAM
• 32K SRAM for the ZX81
• 40K Non-Volatile Memory
• 4K/8K ROMs in One ZX-80
• 64K Byte Memory Expansion for the T/S 1000
• 6K RAM Addition
• 8K EEPROM Board
• 8K of Very Low Power CMOS RAM In a World Class Computer for Only $0
• 8K of Very Low Power CMOS RAM In aWorld Class Computer For Only $40
• A Broken 2068? Fix It Yourself!
• A Cheap and Simple EPROM Programmer
• A Cheap and Simple EPROM Programmer
• A Comparator to Use on Bad 2068 Tapes
• A Couple of Simple ZX81/Timex 1000 Modifications
• A Cure for Overheating
• A Cure for Overheating
• A Cursor Pad
• A Hot QL Fix
• A JLO FDD Interface Hardware Project
• A Keyboard Interface for Any Timex Computer
• A Load/Save Switch, Test Tapes, Azimuth Alignment Revisited and Micro Cartridges
• A Long Cable For 2040 Printers
• A Monitor Adapter for the T/S 1500
• A Monitor Connection for the T/S 1500
• A New House for the QL
• A New Life for Sinclair/Timex Computers
• A Parallel Interface for the ZX-80/MicroAce Computer
• A Power Supply for Your Cassette Recorder
• A Regulated-Voltage Power Adaptor
• A Simple Loading Aid
• A Subroutine for Serial Data Output
• A Sure Cure For TS Wobble
• A Video Upgrade?
• A-B Boxes and other Ramblings
• Activating the NMI on TS2068
• Adapting the TI Keyboard to the TS1000
• Adapting the TI Keyboard to the TS1000
• Adapting the ZX81 Rampack to the TS2068
• Adapting the ZX81 RAMpack to TS2068
• Add a Full-Sized Keyboard to Sinclair's ZX80
• Add an On/Off Switch to Your QL
• Add an On/Off Switch to Your QL
• Add an RS-232 Port to Your ZX81
• Add Direct Video Output to Sinclair ZX81
• Add serial port to your Sinclair
• Addendum to Article in January Update "Dock Bank Memory, 20 Cents"
• Addendum: A Simple EEPROMER
• Adding a Counter in Hardware
• Adding A Joystick To The Timex-Sinclair 1000
• Adding a Joystick to the ZX81
• Adding a Joystick to Your ZX81
• Adding a TTL Monitor to Your TS-2068
• Adding a TTL Monitor to Your TS-2068
• Adding a TTL Monitor To Your TS-2068
• Adding a Video Monitor to your Sinclair ZX81
• Adding an LED Load Monitor to the MicroAce
• Adding an LED Load Monitor to the ZX80
• Adding Dimension in 2068 Computing ... Using a Plotter
• Adding On To Gladstone
• Adding Ports to your QL
• Adding RGB to Your 2068
• Adding RGB to Your 2068
• Adding RGB to Your 2068
• Adding Two More Drives
• Adding Two More Drives
• Additional Byte-Back Memory Pack Notes
• Adjustments to the TS 2020 for Volume and Rewind/FF Speed
• AERCO Parallel Printer Interface Case
• Alignment Tape: Screwing Your Head on Straight
• All-Purpose Beeper
• Alternate Modem Power Supplies
• Alternate Modem Power Supplies
• Alternate Modem Power Supplies
• An Easy Improvement for Your TS-2068 Keyboard
• An Illuminating Idea
• An LED for Your 2040
• An RGB Monitor for the TS2068
• And Now For Something Completely Different
• Announcing: The IKI (An IBM Keyboard Interface for 1000/2068)
• Another 2068 Color Monitor Adapter
• Another Approach to Extra Memory Banks
• Another Look at 450ns EPROMS vs the ZX81/TS1000
• Audio Transformer Load Aid
• Autotape
• Bank Switching for the TS 1000, Part 1
• Bank Switching for the TS 1000, Part 2
• Bank Switching for the TS 1000, Part 3
• Bank Switching for the TS 1000, Part 8
• Bank Switching for the ZX81, Part 2
• Bank Switching Schematics
• Bankswitched RAM on the TS2068 and Spectrum
• Battery Backup
• BBU for T/S Machines
• Beep, Beep
• Beep, beep
• Better RGB Circuit
• Better RGB Circuit
• Better RGB Circuit
• Better Sound
• Big Keyboard 2068
• Bordure Psychedelique?
• Break Out with This Sinclair Interface
• Break the 1K Barrier
• Brother EP-44 to Sinclair IF One
• Buffering the Data Bus
• Bug Alert: One-chip NVM
• Build a 2068 Cartridge Board
• Build a 64K Dynamic Memory Board
• Build a Spectrum ROMswitching Circuit For Your TS-2068
• Build a Spectrum Romswitching Circuit for your TS-2068
• Build a Spectrum ROMswitching Circuit for Your TS-2068
• Build a Spectrum ROMswitching Circuit for Your TS-2068
• Build a Spectrum Romswitching Circuit for your TS-2608
• Build Additional RAM
• Build an Uninterruptible Power Supply
• Build this Super Simple Modem
• Build your own EPROM blower without blowing a fortune
• Build Your Own EPROM Programmer and Centronics Printer Interface - Part I
• Build Your Own EPROM Programmer and Centronics Printer Interface - Part II
• Build Your Own Surge Suppressor
• Byte-Back RS-232 and Tasword Two
• ByteBack to Interface 1 RS-232
• Can We Talk? On Communicating Computers
• Cassette Connection Comments
• Cassette Eavesdropper
• Cassette Recorder Interface
• Cassette Tape Load/Save Monitor
• Centronics Printer Port - AERCO Style
• Centronics Style Port TS-1000
• Cheap 32K RAM Add on For The 2068
• Cheap Power
• Circuit Circus
• Circuit Circus
• Circuit training helps to build good characters
• Clearer Video
• Color Blind to Colorful
• Composite Color on the QL
• Computer Repairs
• Connect A Composite TTL Monitor to a TS1000/QL
• Connect a Monitor to the TS1000
• Connect a Monitor to the TS1000
• Connect a Monitor to the TS1000
• Connect a Monitor to the TS1000
• Connecting an RGB Monitor
• Connecting The Amdek Amdisk III to the Zebra FDD 3000
• Convert your T/S,ZX to Color
• Convert Your TV into a Computer Monitor
• Converting the Oliger 64K Ram for the 2068
• Converting Your 2068 to a Spectrum
• Cooling Your ZX81/TS 1000
• Correct cassette loading problems
• Correction to Battery Back Up Article
• Creating a Four Port Expansion Decoder
• Curing 16K RAM Random Dumping
• Cursor Joystick (for the ZX81 & 2068)
• Custom Keyboard Tip
• Customize Your 2068 Keyboard
• Dead Key Row
• Decoding the EXROM
• Did You Know?
• Digital Imaging Hardware Project, Part I
• Digital Imaging II
• Digital Imagitizing, Part 1
• Digital Imagizing, Part 1
• Digital Imagizing, Part 2
• Digitizer
• Do It Yourself Emulator
• Dock Bank Memory for Twenty Cents: Convert a TS-1000 Ram Memory for the TS-2068
• Double Your Memory
• Driving a Monitor From the T/S 1000
• Driving a monitor from the TS 1000
• Driving a Monitor From the TS 1000
• Driving a Monitor From the TS 1000
• Driving a Monitor From the TS 1000
• Easy Keyboard Fix
• Easy Keyboard Fix
• Electrical Transient Protection Made Easy
• Emergency Power for the 2068
• EMU-1 Spectrum Emulator
• Eprom Burner Program
• EPROM Programmer You Can Build, Part 1
• EPROM Programmer You Can Build, Part 2
• EPROM Programmer You Can Build, Part II
• EPROM Programmer, Part II: Fixing Your Home ROM
• EPROM Reader and Burner Uses
• EPROMS Are Alive and Well ... And Living in Redwood City
• EPROMS Are Alive and Well...
• Error Codes: Revising a Hunter Board to Hold 32k
• Error in simple Sound Port
• Esc Key
• Escape Key
• Escape Key Boo Boo
• Expand Your Timex/Sinclair Operating System
• Expand Your Timex/Sinclair Operating System
• Expand Your ZX-81 Memory to 32K
• Expanding RAM
• Experiments in Memory and I/O Expansion
• Extended Problem
• Extra Memory Programming
• February Hardware Project
• Firmware Card
• Fix the ZX-81/TS1000 Loose Jack Problem
• Fixing My FDD3000
• Fixing TS-2050 Modem Boards
• Foote Interface Fix
• Four-digit Multiplexed BCD to ZX81 Adaptor
• Frequency Counter
• From the Project Table
• Fun With Hardware Part I - The Platform
• GAMESMATE Fix
• GAMESMATE Fix
• Gavilan Printer Interface
• George Erickson's Ultimate Loading Solution: Batteries
• George Rey's Case
• Get a Better Screen
• Getting Loaded
• Getting More From Each Keystroke
• Getting More From Your 2050 Modem
• Getting the LED Out
• Green and Black and Read All Over
• Hacker's Haven Presents: ZX-81 (and 2068) MIDI Interface Project, Part 2
• Hacker's Haven Presents: ZX-81 MIDI Interface Project
• Hacker's Notebook: Bill Volk's Loading Aid
• Hacker's Notebook: Joysticks
• Hacker's Notebook: TS 1000 Memory Expansion
• Hackers Note Book: Atari Keypad on 2068
• Hackers Notebook: Atari Key Pad
• Happiness is a Converted T/S 1016 RAM That Works!
• Hardware Buys & Tips
• Hardware Helpers
• Hardware Hints
• Hardware Hints
• Hardware Hints
• Hardware Project
• Hardware Project: EPROM Programmer You Can Build
• Hardware Report
• Hardware Review: Data-Skip VIDEOFACE
• Hardware Tip: Keyboard Conversion
• Hardware Tips
• Have You Lost Your Grip?
• Have You Lost Your Grip?
• Home Control on a Budget
• Home-made 2068 LarKen Disk Interface
• How I Made My Fullsize Keyboard
• How to Build a Larken Dock Board
• How to Build an Inexpensive Joystick Interface
• How to Convert a Surplus WC2050 Modem into an RS-232 Serial Interface for your TS1000/1500/2068
• How to Convert a Surplus WC2050 Modem into an RS232 Serial Interface for your TS1000/1500/2068
• How to Modify a Coleco Adam Power Supply for your QL
• How to Wire a Big Keyboard
• I/O Ports: Centronics Port
• IBM-AT Keyboard Interface for the ZX-81
• IEEE-488 for Sinclair Users
• Improved TS-2068 Internal ROM Bypass I
• Improved TS2068 Internal ROM Bypass
• Improving the Spectrum Emulator EMU
• Improving Timex/Sinclair Tape Loading
• Improving Your ZX-81
• Improving Zebra Graphics Tablet
• Increase Your Memory
• Input Port
• Input/Output: A Big Keyboard
• Install A Reset Switch
• Installing a UHF Modulator
• Installing a UHF Modulator
• Installing the SCLD
• Interface a Joystick to Your TS-1000 or ZX81
• Interface for RAM in T/S 2068 I/O Ports
• Interface to the Real World
• Interface Zero on an Oliger 2068 Read Board
• Interfacing a Real Printer to the Timex/Sinclair 1000
• Interfacing An Electronic Typewriter to a ZX81
• Interfacing Tips and Troubles: Interfacing the Sinclair Computers, Part One
• Interfacing Tips and Troubles: Interfacing the Sinclair Computers, Part Two
• Interfacing Tips and Troubles: Memory Mapped I/O on the Sinclair ZX81
• Interfacing with Brother's EP44 Typewriter
• Internal 64K RAM for the TS/ZX
• Internal RGB/Reset Button Modification for the T/S 2068
• Internal RGB/Reset Button Modification for the TS 2068
• Introduction to Computer Control
• Joystick (IN 31)
• June Hardware Project: Modem Fix
• Just for Thought
• Keep Your Cool
• Key Board Mania, Part 3
• Key Click Generator
• Keyboard Alternatives
• Keyboard Conversions for ZX/TS
• Keyboard Interface for the TS1000 and the 2068
• Keyboard Mania, Part 1
• Keyboard Mania, Part 1
• Keyboard Mania, Part 2
• Keyboard Mania, Part 2
• Keyboard Mania, Part 3
• Keyboard Mania, Part 4
• Keyboard Mania, Part 4
• Keyboard Mania, Part 5
• Keyboard Mania, Part 5
• Keyboard Mania, Part 7
• Keyboard Mania, Parts 6 & 7
• Keyboard/System Conversion: The First 40/1 Keys
• Larken & Hunter
• Larken Lines
• Letter from Edward Loxtercamp
• Letters
• LKDOS Off Switch (For MAX DOS Operation)
• Load and Save Easier with LED VU Meter
• Load/Save Switch
• Logic Analyzer
• Low Cost High Tech 2068 Burglar Alarm
• Low Cost Voice Recognition for the TS-2068
• Machine Code Development System For Your Timex Sinclair 1000
• Machine Code Development System For Your Timex Sinclair 1000 Part II
• Machine Code Execution Above 32K
• Machine to Machine Transfers
• Machine to Machine Transfers
• Make the Tasman 'B' Centronics Printer Interface Work with the Larken DS400
• Make the Tasman 'B' CPI Work With the Larken DS-400
• Make Your Own 2068 & TS1000 EPROM Progammer
• Making a Wafadrive Parallel Printer Cable
• Making a Wafadrive Parallel Printer Cable
• Making Professional PC Boards
• Making the 1000/ZX81 Even Better
• Making the T/S 1000 & ZX-81 Even Better
• Marathon Operating Times for the Timex-Sinclair
• MAX 1000: Make the Most Popular "Mods" Compatible On Your TS1000
• Mem Saver
• Memopak RAM and TS 2040 Printer Compatibility
• Memory Decoding Above 16K
• Memory Expansion for the ZX-80
• Memory Improves With Age
• Micro Juice
• MIDI
• Mini-Motherboard
• Miracle Systems Serial/Parallel Printer Interface
• Misc Notes: Monitor Problems
• Mod to Use Hunter RAM with > 32K
• Modem Fix (2050)
• Modems and the Phone Line: A Cautionary Tale
• Modems and the Phone Line: A Cautionary Tale
• Modifying the Star NX1000 with the AERCO Printer Interface
• Monitor Connection on a TS-1500
• Monitor Output for the TS-1000 & 1500
• More Legendary Timex-Sinclair 1000 and Sinclair ZX-81 Information
• More On-Board Memory For ZX-81/TS-1000
• My Pet Dinosaur
• New Locations for M/C Routines in a 64K RAMPack
• New Locations for M/C Routines in a 64K RAMpack
• New Locations for MC Routines in a 64K RAMpack
• Ni-Cad Charger
• On Board Computer
• On the Extra Simple Spectr/Emulator
• One Chip Mods
• One Chip Mods: Kempstonize Your Joystick Port
• One Chip Mods: Recycle that 16K RAM pack
• One Chip NVM Correction
• One-Chip Mods: Built-in NVM
• Parallel to Serial Interface
• PET ASCII Output Program for the Timex/Sinclair ZX81
• Phone Dialer
• Phone Line Filter
• Phone Line Filter
• Playing With Electricity
• Playing With Electricity: 64K EPROM Card
• Playing With Electricity: Printer Interface Circuit
• Playing With Electricity: QL Digitizer
• Playing With Electricity: Video Digitizer
• Playing With Electricity: What the hell is a modaptor anyway?
• Poor Man's MODEM
• Poor Man's Modem
• Poor Man's Modem
• Port Project #1: Data Communications Between Two Computers
• Port Projects: Get the LED-OUT
• Power Supplies
• Power Supply and the 2068
• Power Switch for TS 2050 Modem
• Problem-Solving Circuits
• Program Blitz
• Protecting Your Programs Against LILCO
• Protecting Your Programs Against LILCO
• Pseudo-ROM
• Put MSCRIPT on EPROM
• QL Color Composite Monitor Jack
• QL Cooling Problems, Part 1
• QL Corner: Computer Fair, Serial Chip Replacement
• QL Corner: Power Supply Repair
• QL Corner: Power Supply Repair
• QL Corner: Programming EPROMs
• QL Corner: QL Power Supply
• QL Corner: Rehousing a QL
• QL for Joy
• QL Heat Problem Corrected
• QL Keyboard Membrane Repairs
• QL One-Chip Mod
• QL RAM Extension
• QL RAM Extension
• QL Real-Time Clock
• QL Real-Time Clock
• QL Remedies
• QL Tip
• QL Tip: 1200 Baud Modem
• QL to IBM RGB Monitor Connections
• QL to IBM RGB Monitor Connections
• QL to Monitor -- Come In! Buffering the QL
• QL to Monitor... Come In! Buffering the QL
• QL to PC Clone Cable
• Qool QL
• Quick and Easy Video Output for the ZX81 and TS 1500
• Quick and Easy Video Output for the ZX81 and TS1000
• Radio Shack MC10
• RAM Decoding for ZX81
• RAM Pack Repairs
• RAMKIT: Build your own 64K RAM
• Regulator Modification to 2068
• Repeat Key
• Repeat Key Option
• Reset Switch for ZX81 and 2068
• Retrace Lines: 2068 and RGB Monitor
• Reverse Video
• Reverse Video Monitor Driver
• Revised Schematic of Digi-Dubber
• Revising a Hunter Board to Hold 32K Bank Switchable NVRAM
• Reviving the 2068 Keyboard
• RGB Interface for the TS2068
• RGB Monitor (for 2068)
• Robotics on a Budget
• ROM Bypass Board PCB layouts
• ROM Bypass Circuit Description
• ROM/EXROM Bypass Board for External Eproms
• ROMPAK
• RS232 I/O Revisted
• RS232 Port Added to Timex 2050 Modem Card
• RS232 Port Added to Timex 2050 Modem Card
• Run TS1000 Machine Code in High Memory
• Run Your Memotech 64K on the 2068
• Running the Unrunnable Spectrum Programs
• Saga 3 Elite Keyboard Review
• Say What?
• Sears RGB Monitor
• Sears RGB Monitor Improve Composite Video
• Seeking a Cheap Output?
• Serial Interface for the QL
• Servo Interface
• Signal Booster
• Signal Booster
• Signal Booster
• Simple 2068 Out Port (Part 2)
• Simple Modem Upgrade
• Simple MODEM Upgrade
• Simple Modem Upgrade
• Simple Output Port
• Simple Output Port for ZX81
• Simple Reset Switch
• Simple RGB Adapter for the T/S 2068
• Simple RGB Adapter for the TS 2068
• Simple Sound Port
• Simple Video Inverter for ZX81
• Sinclair QL to IBM XT File Transfer
• Sinclair QL/RS-232/Xerox Memorywriter Connection
• Sinclair Talks to PC/XT
• Single-Key Shifted Functions
• Slave CPU Processing: Applicable to ANY Host Computer
• Smoother
• So You Wished You Had Bought a TS2000
• Some Short Projects for Your Timex Sinclair Computers
• Sound Generator for the ZX 81
• Sound Generator for the ZX81
• Spectrum Buss on 2068
• Spectrum Conversion Notes: The Spectrum Expansion Connector
• Spectrum Emulator
• Spectrum Emulator Revisited
• Spectrum Hardware Restart
• Spectrum I/O Controller
• Spectrum Motherboard
• SQ Notes: DIY ROM Switch
• SQ Notes: QL to IBM RGB Connections
• SQ-UP
• Static RAM on Cartridge
• Store BASIC on EPROM with an EPROM Programmer
• Super Data Save
• Super Joystick
• Supply Protector
• Surplus Keyboard Improvements for Extra Shifted Keys
• Surplus Keyboards Plus Directions
• Switchable Spectrum ROM Project for the TS 2068
• System Expansion Hardware
• T/S 1000 40K Non-Volatile Memory Expansion Project, Part II
• T/S 1000/ZX81 External Keyboard Buffer
• T/S 2068-Spectrum ROM Module
• Tactile Feedback for a Dime
• Tales From the Chip
• Talk Can Be Cheap
• Tape Amplifier for Loading Weak Tapes
• Tape Amplifier for Loading Weak Tapes
• Tape Head Alignment
• Tape Head Alignment
• Tape Level Indicator
• Technical Report: ZX Spectrum Modifications to U.S.A. Standards
• Technical Tips for the Timex
• The "Truly Portable" Sinclair/Timex
• The 192K ZX/TS Laptop Project
• The Amazing Digi-Dubber
• The Art Gallery
• The Automatic Tape-Recorder Controller
• The Cassette Connection
• The Cassette Connection
• The Digitizer
• The Digitizer
• The Digitizer
• The Digitizer and A Problem Found: Notes from Marty
• The Digitizer and What's Happening
• The Great RAM Rescue
• The Great RAM Rescue
• The IKI Interface
• The Interface Zero: Adding Microdrives to Your 2068
• The Joy of Joysticks: Add This to "Repeat-Key!"
• The Oliger System: Minireview
• The Portable Timex
• The RGB to NTSC Converter In Other Words Rock Solid Video
• The Sinclair Z88: Considerations for Peripheral Design
• The Sincus Light Pen
• The Sincus Light Pen TS2068: An Experimental Project
• The Solid State Disk Drive (Part 3)
• The Solid State Disk Drive (Part 4)
• The TS2068 Equipped with Microdrives & EMU-1
• The ZX Breadboarder: A Proportional Joystick Interface
• The ZX Breadboarder: The Digi-Dubber
• The ZX Printer and the 2068
• The ZX-81/TS1000 Column
• The ZX/TS and 2716 450ns EPROMS
• The ZX/TS Serial Link
• The ZX/TS True 64K Internal NVM Upgrade
• The ZX81/TS1000 Column
• TI99 Keyboard
• Tim's Schematic: ZX81/TS1000 Out-Board Clock Module
• Timex 2068 EPROMs (Part 2)
• Timex 2068 User EPROMs
• Timex 2068/Epson RX80
• Timex Graphics
• TMS9918A Video Upgrade For The TS1000
• TMS9918A Video Upgrade: Part 1
• TMS9918A Video Upgrade: Part 2
• Tone Generator
• Troubleshooting Disk-Drive Power Supplies
• Truly Portable Computers
• TS 1000 Hardware Mod
• TS 1000 Keyboard Add-On
• TS 1000 Memory Expansion
• TS 1000 ROM Swap
• TS 1000 Signal Booster
• TS 1000 Stability Tips
• TS 2040 Printer Switch
• TS 2040 Printer Switch
• TS 2040 Switch Placement
• TS 2068 Printer Interface
• TS 2068 Printer Interface
• TS 2068-Spectrum ROM Module
• TS Help and Information: Modifications to Add-on Keyboard
• TS-1000 Using 3 16K RAMPacks
• TS-2068 - CMOS on Board
• TS-2068 Cassette LOAD AID Meter
• TS-2068 Home ROM Bypass
• TS-2068 Memory Expansion
• TS-2068 ROM ByPass Board Features and Options II
• TS-2068 with Unlimited RAM capability
• TS1000 Keyboard Addition
• TS1000 Monitor Project
• TS1000 Pulse Cleaner
• TS1000 RAM Pack Upgrades
• TS1000 Turbo
• TS1000 Turbo
• TS1000 Turbo
• TS1000 Turbo
• TS1000 Video Driver
• TS1000 Video Driver Update
• TS1500 Fix
• TS1500 memory mod
• TS1500 Video Topics
• TS2040 Printer Switch
• TS2040 Printer Switch
• TS2068 Digitizer
• TS2068 Reset and Initialization Problems with Solution
• TS2068 Reset and Initialization Problems With Solution
• TS2068 Reset and Initialization Problems with Solution
• TS2068 Serial Cable
• TS2068/Spectrum Microdrive
• TSMON
• Turbo Switch for the ZX-81
• Turbo Switch for the ZX81
• TV Sync Solution
• TV to Monitor
• Tweak & Tinker: QL Power Supply Unit
• Twister with power schematic
• Two Memories in One Space
• Two More on RGB
• Two Problem-Solving Circuits: Preregulator and Battery Backup
• Two Switch Human Interface for the Communicative Impaired
• Two-Fer One: A Double Duty Oliger Board
• Un-Interruptible Power Supply
• Understanding and Upgrading the TS1016 RAM Pack
• Understanding and Upgrading The TS1016 RAM Pack
• Universal LROS/AROS Development Board
• Universal LROS/AROS/Development Board Schematic
• Update 2: Interface Zero Resistor
• Updates
• Updates
• Upgrading T/S Video
• Upgrading Timex/Sinclair Video
• Upgrading to a "Real" Keyboard: E-Z Key Makes It Easy
• Use Your TV Speaker for Peripheral Audio
• User Defined Graphics for the TS-1000
• User Defined Graphics for TS-1000, Part II
• Using Double-Sided Drives with Timex Disk Controllers
• Using Extra Keys on Big Keyboard - A Simpler Approach
• Using the "Tomy Tutor" Recorder with TS-2068
• Using the Microace with Sinclair Accessories
• Using the PC8300 with 64K RAM Packs
• USR Key
• VAMP: TV to Monitor Kit
• Vector Graphics
• Vector Graphics
• Video Board Upgrade for Your TSZX
• Video Modifications for the ZX80
• Video Modifications for the ZX80
• Voice Reproduction
• Wafadrive/RS-232/Xerox Memorywriter
• World's Simplest Volt-Meter
• WRX 16 Hi-Res for the 1000
• Your Timex/Sinclair Can Become a Terminal
• Z-SI/O Serial Interface
• Z80 LCD
• Z88 to QL Connections
• ZEX for the ZX81
• ZVoice
• ZVOICE
• ZVOICE Part 2
• ZX Analogue-to-Digital Converter
• ZX Burglar Alarm
• ZX Burglar Alarm
• ZX Interface Board
• ZX Resources
• ZX Resources: RS232 I/O
• ZX Resources: Transferring Between Computers
• ZX Spectrum Modifications to U.S.A. Standards
• ZX Spectrum Modifications to U.S.A. Standards
• ZX-81 Computer Joystick
• ZX-81 Parallel Printer Interface
• ZX-EPROMer
• ZX/TS Repair Guide - Part II
• ZX/TS ROM and RAM Addressing
• ZX/TS True 64K Internal NVM Upgrade
• ZX81 & QL Regulator Bug
• ZX81 Background Reverse
• ZX81 Burgler Alarm
• ZX81 Data Acquisition Module
• ZX81 Data Acquisition Module
• ZX81 Direct Video Output
• ZX81 EPROM Board
• ZX81 EPROM Board
• ZX81 Extendi-RAM
• ZX81 Loading Filter/Interface
• ZX81 RAMpack Expander
• ZX81 Resources
• ZX81 Resources: 1mb Bank-Switched Memory Board
• ZX81 Resources: 64K SRAM Memory
• ZX81 Resources: A Tethered Robot
• ZX81 Resources: Analogue to Digital Converter
• ZX81 Resources: Joystick
• ZX81 Resources: Joysticks
• ZX81 ROM Adapter 2764 EPROM to Replace Sinclair ROM
• ZX81 Tape Controller
• ZX81 User-Defined Graphics
• ZX81/TSXXXX Out-Board Real-Time Clock
• ZX81/TSXXXX Out-Board Real-Time Clock
• ZXVoice

Books

• How to Make Your Computer Talk

Documents

• Adding a Reset Button to Your TS-1000 or TS-2068
• Adding a TTL Monitor to your TS-2068
• Build a 2764 Based "Cartridge" Board and Programmer for Your '81
• Build a 2764 Based Cartridge Board and Programmer
• Connect a Monitor to the TS1000
• Connecting the Amdek Amdisk III to the Zebra FDD 3000
• Custom Keyboard Tip
• EPROM Cartridge Download Routine
• Experimenters Guide to the WC2050 Modem Board
• Experimenting With The Byte Back Modem
• How to Program a 2764 EPROM Using Hot Z
• How to use the 2068 User Cartridge Board
• Interface a Joystick to Your TS-1000 or ZX81
• Keyboard Mania
• Letter from Pete Petri to Fred Nachbaur
• Oliger 2068 Expansion RGB Circuit Instructions
• QL Tip
• Run Z-XLR8 on TS 1500
• Sinclair ZX81 8K ROM Upgrade manual
• The John Oliger Co. 2068 EPROM Programmer
• TS-2068 HOME ROM Bypass
• TS1500 Meets Oliger Video
• TS1500 Reverse Video
• Understanding and Upgrading the TS1016 RAM Pack

Blog posts

• How to Fix 2068 Video
• Minstrel 3 Review
• TS 1500 Composite Video Output
• Upgrading the Power in Your Timex/Sinclair 2068