TS 2068: Hardware Projects
Hardware projects in computing magazines and user group newsletters represented the physical counterpart to type-in programs. These DIY ventures allowed computer enthusiasts to enhance their systems through custom-built hardware modifications and peripherals.
Publications like Byte, Radio-Electronics, and user group newsletters featured detailed schematics, parts lists, and step-by-step assembly instructions. Projects ranged from practical upgrades like memory expansions to specialized peripherals such as digitizers, speech synthesizers, and custom input devices.
| Title | Description | Computers |
|---|---|---|
| 12 Volt Modification | Reprinted from Jan/Feb 1990 ISTUG newsletter. | Timex/Sinclair 2068 |
| 12 Volt Modification | Timex/Sinclair 2068 | |
| 12 Volt Modification | Replace the 78L12 voltage regulator with a larger capacity model for better power regulation and improved video. | Timex/Sinclair 2068 |
| 12 Volt Modification | Timex/Sinclair 2068 | |
| 2068 & Spectrum Customized ROMs | Short article on author’s customized ROMs and brief description of how to create one’s own. | Timex/Sinclair 2068 |
| 2068 Cassette Connection, Part II | Hints and schematics for improving loading. | Timex/Sinclair 2068 |
| 2068 Cassette Connection, Part II | Timex/Sinclair 2068 | |
| 2068 Cassette Connection: Part II: Loading Tips | In the last Issue, I recommended removal of a couple capacitors in the SAVE circuitry of the TS2068. This provides a “brighter” save signal, which makes subsequent loading more reliable. This is all that is required to get many systems working “up to spec,” and makes the use of “fast-load” routines possible, even practical. On | Timex/Sinclair 2068 |
| 2068 Colour Adjustments | Short program to print color bars and instructions for adjusting the color output. | Timex/Sinclair 2068 |
| 2068 Digitizer | Adapts an idea by Forrest Mims to digize images using a plotter and photo transistor. | Timex/Sinclair 2068 |
| 2068 Fix Star NX-1000/Aerco Centronics I/F Fix | Timex/Sinclair 2068 | |
| 2068 Fix Star NX-1000/AERCO Centronics I/F Fix | Fix to accommodate STROBE line requirement of Star NX-1000 printer. | Timex/Sinclair 2068 |
| 2068 LOAD Notes | Timex/Sinclair 2068 | |
| 2068 Power Supply - Make It Cooler & Quieter | Timex/Sinclair 2068 | |
| 2068 Power Supply Problem? | From my own personal experience and information gleaned from articles, it is clear that the method of powering the 2068 has serious problems. My solution to these problems is to provide a husky linear power supply to the computer, printer and accessories. | Timex/Sinclair 2068 |
| 2068 Power Supply Project | Timex/Sinclair 2068 | |
| 2068 Power Supply: Make It Cooler & Quieter | Timex/Sinclair 2068 | |
| 2068 Power Supply: Make It Cooler & Quieter | Timex/Sinclair 2068 | |
| 2068 Power Supply: Make It Cooler & Quieter | Timex/Sinclair 2068 | |
| 2068 Printer Interface and ROM Card | Printer interface that plugs into the cartridge port and has room for a 16K ROM. Foote Software sold this version as the FootePrint. | Timex/Sinclair 2068 |
| 2068 ROM Bypass Board Schematic, Revised | Revised and accurate schematic for William Pedersen’s ROM bypass board. | Timex/Sinclair 2068 |
| 32K RAM | 32K RAM in the cartridge port for Timex Portugal Disk Drives. | Timex/Sinclair 2068 |
| A Broken 2068? Fix It Yourself! | Method for testing for and repairing bad RAM chips. | Timex/Sinclair 2068 |
| A Comparator to Use on Bad 2068 Tapes | Simple comparator schematic to square up signals from a cassette recorder. | Timex/Sinclair 2068 |
| A Cursor Pad | Hardware and software solution to create an external, cursor keypad. | Timex/Sinclair 2068 |
| A JLO FDD Interface Hardware Project | Timex/Sinclair 2068 | |
| A Keyboard Interface for Any Timex Computer | Build a keyboard interface that plugs into the expansion interface of your 1000, 1500 or 2068. Does not require opening computer. | Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 |
| A Load/Save Switch, Test Tapes, Azimuth Alignment Revisited and Micro Cartridges | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| A-B Boxes and other Ramblings | DIY switch boxes for disk drives. | Sinclair QL, Timex/Sinclair 2068 |
| Activating the NMI on TS2068 | Timex/Sinclair 2068 | |
| Adapting the ZX81 Rampack to the TS2068 | Adapt the 1016 ram pack, memory mapped to the DOCK bank. | Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Adapting the ZX81 RAMpack to TS2068 | Timex/Sinclair 2068 | |
| Add serial port to your Sinclair | Project to add a 2050-compatible serial port to the 1000 or 2068. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Addendum to Article in January Update "Dock Bank Memory, 20 Cents" | Corrected diagram. | Timex/Sinclair 2068 |
| Adding a TTL Monitor to Your TS-2068 | Timex/Sinclair 2068 | |
| Adding a TTL Monitor to Your TS-2068 | Timex/Sinclair 2068 | |
| Adding a TTL Monitor To Your TS-2068 | Timex/Sinclair 2068 | |
| Adding Dimension in 2068 Computing ... Using a Plotter | Timex/Sinclair 2068 | |
| Adding RGB to Your 2068 | Instructions and schematic to connect 2068 to TTL RGB monitor. | Timex/Sinclair 2068 |
| Adding RGB to Your 2068 | Timex/Sinclair 2068 | |
| Adding RGB to Your 2068 | Timex/Sinclair 2068 | |
| Adding Two More Drives | Add two more drives to a Larken system. | Timex/Sinclair 2068 |
| Adding Two More Drives | Timex/Sinclair 2068 | |
| AERCO Parallel Printer Interface Case | Timex/Sinclair 2068 | |
| An Easy Improvement for Your TS-2068 Keyboard | Timex/Sinclair 2068 | |
| An RGB Monitor for the TS2068 | Timex/Sinclair 2068 | |
| And Now For Something Completely Different | Print 2068 images to an OKIMATE 10 or 20 printer; transfer those images to clothing. Requires either McMichael’s Commodore interface or an Okimate with IBM parallel interface. | Timex/Sinclair 2068 |
| Announcing: The IKI (An IBM Keyboard Interface for 1000/2068) | The IKI can be used with the ZX80, ZK81, T/S 1000, T/S 1500, Spectrum and T/S 2068 computers. It is compatible with all interfaces for those computers. The IKI works with any IBM XT-compatible keyboard. The keyboard must have an XT/AT selector switch. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Another 2068 Color Monitor Adapter | RGB monitor interface using a transistor and integrated circuit (74LS04). | Timex/Sinclair 2068 |
| Another Approach to Extra Memory Banks | I put together a board using eight 43256 chips, giving 256K in eight banks. This article will describe how it works. | Timex/Sinclair 2068 |
| Audio Transformer Load Aid | Timex/Sinclair 2068 | |
| Bank Switching Schematics | Timex/Sinclair 2068 | |
| Bankswitched RAM on the TS2068 and Spectrum | Timex/Sinclair 2068 | |
| Better RGB Circuit | Timex/Sinclair 2068 | |
| Better RGB Circuit | Timex/Sinclair 2068 | |
| Better RGB Circuit | RGB adapter with option for positive or negative sync and positive or negative color signals. | Timex/Sinclair 2068 |
| Better Sound | Increase the volume of SOUND on the 2068 with this little circuit. | Timex/Sinclair 2068 |
| Big Keyboard 2068 | Schematic for interfacing a keyboard to the expansion bus. | Timex/Sinclair 2068 |
| Bordure Psychedelique? | Short program to generate multicolor border effects. | Timex/Sinclair 2068 |
| Brother EP-44 to Sinclair IF One | Timex/Sinclair 2068 | |
| Build a 2068 Cartridge Board | In SWN 2/4 and 2/5, I discussed the construction of an eprom programmer for the 2068 and 1000. Those of you with 2068s should find interest in a way to utilize programs that are burned onto those eproms. The cartridge reader board will give you a way to run “instant software.” | Timex/Sinclair 2068 |
| Build a Spectrum ROMswitching Circuit For Your TS-2068 | Timex/Sinclair 2068 | |
| Build a Spectrum Romswitching Circuit for your TS-2068 | Timex/Sinclair 2068 | |
| Build a Spectrum ROMswitching Circuit for Your TS-2068 | Timex/Sinclair 2068 | |
| Build a Spectrum ROMswitching Circuit for Your TS-2068 | Timex/Sinclair 2068 | |
| Build a Spectrum Romswitching Circuit for your TS-2608 | Timex/Sinclair 2068 | |
| Build this Super Simple Modem | Short article and program on interfacing directly to the telephone line via the MIC jack. Program uses BEEP command to generate necessary tones. | Timex/Sinclair 2068 |
| Byte-Back RS-232 and Tasword Two | Timex/Sinclair 2068 | |
| ByteBack to Interface 1 RS-232 | Timex/Sinclair 2068 | |
| Can We Talk? On Communicating Computers | Timex/Sinclair 2068 | |
| Cassette Connection Comments | Timex/Sinclair 2068 | |
| Centronics Printer Port - AERCO Style | Schematic for a parallel printer interface using the Zilog Z80-A parallel input/output chip (PIO). | Timex/Sinclair 2068 |
| Cheap 32K RAM Add on For The 2068 | Timex/Sinclair 2068 | |
| Circuit Circus | Excerpted from SWYM Newsletter, Seattle Sinclair Users Group. Sync inverter for QL, load fix for ZX81/TS1000, TOS power supply, modem power. | Sinclair QL, Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Circuit Circus | Sinclair QL, Timex/Sinclair 2068 | |
| Color Blind to Colorful | Timex/Sinclair 2068 | |
| Computer Repairs | Tips for repairing the TS 2068. | Timex/Sinclair 2068 |
| Connecting an RGB Monitor | Describes how to connect an RGB monitor using a kit from E. Arthur Brown. | Timex/Sinclair 2068 |
| Connecting The Amdek Amdisk III to the Zebra FDD 3000 | Timex/Sinclair 2068 | |
| Converting the Oliger 64K Ram for the 2068 | To use the JLO 64 K RAM board (from the TS1000) on the 2068, it is necessary to make these changes. | Timex/Sinclair 2068 |
| Converting Your 2068 to a Spectrum | Sinclair ZX Spectrum, Timex/Sinclair 2068 | |
| Cursor Joystick (for the ZX81 & 2068) | Describes how to wire a joystick port for use with a Spectrum ROM. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Customize Your 2068 Keyboard | Circuit to generate a series of keystrokes using CMOS oscillator (4011), counter (4017) and switch (4066). Includes examples for CHR$(27); and other keystrokes. | Timex/Sinclair 2068 |
| Dead Key Row | Timex/Sinclair 2068 | |
| Decoding the EXROM | The following circuit will allow you to use the memory area above the EXROM, which ocupies the 0 to 8K chunk in that memory bank, as RAM. | Timex/Sinclair 2068 |
| Did You Know? | Schematic for an AERCO style printer interface. | Timex/Sinclair 2068 |
| Digital Imaging Hardware Project, Part I | Reprint of Eric Michaud’s Digital Imagizing, Part I from Sinc-Link v5 n1. | Timex/Sinclair 2068 |
| Digital Imaging II | Reprint of the original, with modified schematic and example scan showing Toby Radloff and Harvey Pekar. Reprinted from the Cleveland, OH, user group newsletter, The RAMTOP, which reprinted from Sinc-Link. | Timex/Sinclair 2068 |
| Digital Imagitizing, Part 1 | Have you ever wanted to have some REAL pictures for your 2068? 1 don’t mean your usual pictures from your typical drawing programs but real pictures, such as your face, for example. This tutorial will show you how to hook up a video camera to your 2068 with a fairly simple hardware attachment. I chose | Timex/Sinclair 2068 |
| Digital Imagizing, Part 1 | Reprint of Eric Michaud’s Digital Imagizing, Part I from Sinc-Link v5 n1. | Timex/Sinclair 2068 |
| Digital Imagizing, Part 2 | Hopefully by now you have assembled the hardware involved in this project and have obtained the necessary driver software from the club library. The software I have written allows you to do high-contrast scans, grey-scaling (the combining of several images giving one picture with varying shades of grey representing the different colours), cleaning of noise | Timex/Sinclair 2068 |
| Digitizer | Timex/Sinclair 2068 | |
| Do It Yourself Emulator | Timex/Sinclair 2068 | |
| Dock Bank Memory for Twenty Cents: Convert a TS-1000 Ram Memory for the TS-2068 | How to convert a 64K RAM pack for the TS1000 to map to dock memory on the TS2068. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Easy Keyboard Fix | Fixing the TS 2068 space bar. Reprint from Clackamas County Area T/S User Group | Timex/Sinclair 2068 |
| Easy Keyboard Fix | Timex/Sinclair 2068 | |
| Emergency Power for the 2068 | Timex/Sinclair 2068 | |
| EMU-1 Spectrum Emulator | Timex/Sinclair 2068 | |
| EPROM Programmer You Can Build, Part 1 | Timex/Sinclair 2068 | |
| EPROM Programmer You Can Build, Part 2 | Timex/Sinclair 2068 | |
| EPROM Programmer You Can Build, Part II | Program to use the EPROM programmer with the TS1000/1500 along with details about cartridge format EPROM settings. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| EPROM Programmer, Part II: Fixing Your Home ROM | Correct the home ROM by transferring it into RAM, changing the code, and then programming a 27128 to replace it. | Timex/Sinclair 2068 |
| EPROMS Are Alive and Well ... And Living in Redwood City | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| EPROMS Are Alive and Well... | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| Error in simple Sound Port | Correction to the schematic. | Timex/Sinclair 2068 |
| Esc Key | Timex/Sinclair 2068 | |
| Escape Key | Timex/Sinclair 2068 | |
| Escape Key Boo Boo | Timex/Sinclair 2068 | |
| Extra Memory Programming | Tutorial on storing programs in DOCK memory and how the Timex interprets those programs. Utilities to prepare BASIC programs for implementation in DOCK memory. | Timex/Sinclair 2068 |
| Fixing My FDD3000 | Timex/Sinclair 2068 | |
| Foote Interface Fix | Timex/Sinclair 2068 | |
| Frequency Counter | Timex/Sinclair 2068 | |
| From the Project Table | Interfacing an Atari trackball to the 2068. | Timex/Sinclair 2068 |
| Fun With Hardware Part I - The Platform | Homebrew memory and IO expansion device for the 2068. | Timex/Sinclair 2068 |
| GAMESMATE Fix | Fix to fully decode the GAMESMATE Kempston compatible joystick interface so it doesn’t conflict with other peripherals. | Timex/Sinclair 2068 |
| GAMESMATE Fix | Fix the minimally-decoded Kempston adapter to with more limited IO range. Only one address line (A5) is decoded in the Kempston; this fix adds A6 and A7 to limit its range of IO ports. | Timex/Sinclair 2068 |
| Gavilan Printer Interface | Timex/Sinclair 2068 | |
| Getting More From Your 2050 Modem | Timex/Sinclair 2068 | |
| Hacker's Haven Presents: ZX-81 (and 2068) MIDI Interface Project, Part 2 | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| Hacker's Haven Presents: ZX-81 MIDI Interface Project | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| Hackers Note Book: Atari Keypad on 2068 | Timex/Sinclair 2068 | |
| Hackers Notebook: Atari Key Pad | Timex/Sinclair 2068 | |
| Hardware Project: EPROM Programmer You Can Build | Hardware/software project to program EPROMs from the 2068. | Timex/Sinclair 2068 |
| Hardware Review: Data-Skip VIDEOFACE | Timex/Sinclair 2068 | |
| Home-made 2068 LarKen Disk Interface | Instructions for building a Larken 2068 disk interface. | Timex/Sinclair 2068 |
| How to Build a Larken Dock Board | How to make a dock cartridge board. | Timex/Sinclair 2068 |
| How to Convert a Surplus WC2050 Modem into an RS-232 Serial Interface for your TS1000/1500/2068 | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| How to Convert a Surplus WC2050 Modem into an RS232 Serial Interface for your TS1000/1500/2068 | Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 | |
| I/O Ports: Centronics Port | Timex/Sinclair 2068 | |
| IEEE-488 for Sinclair Users | It is not widely known that the COMMODORE serial port is a simple form of the IBEE-488 GPIB with serial data transfer in place of parallel. It holds no mysterious secrets. What is needed to do the same with a TS2068, SPECTRUM, or QL is a half way decent interface. | Timex/Sinclair 2068 |
| Improved TS-2068 Internal ROM Bypass I | Timex/Sinclair 2068 | |
| Improved TS2068 Internal ROM Bypass | Timex/Sinclair 2068 | |
| Improving the Spectrum Emulator EMU | Adding pull-up resistors to a Spectrum emulator cartridge. | Timex/Sinclair 2068 |
| Improving Zebra Graphics Tablet | Timex/Sinclair 2068 | |
| Installing the SCLD | Timex/Sinclair 2068 | |
| Interface for RAM in T/S 2068 I/O Ports | Requires Oliger expansion board. | Timex/Sinclair 2068 |
| Interface Zero on an Oliger 2068 Read Board | Timex/Sinclair 2068 | |
| Interfacing Tips and Troubles: Interfacing the Sinclair Computers, Part One | Introduction to interfacing the 1000, 1500, 2068 and a schematic for interfacing. | Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 |
| Interfacing Tips and Troubles: Interfacing the Sinclair Computers, Part Two | Basic and machine language routines for interfacing. Tri-state interface schematic. | Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 |
| Interfacing Tips and Troubles: Memory Mapped I/O on the Sinclair ZX81 | Memory-mapped IO on a Timex/Sinclair computer. | Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 |
| Internal RGB/Reset Button Modification for the T/S 2068 | Timex/Sinclair 2068 | |
| Internal RGB/Reset Button Modification for the TS 2068 | Timex/Sinclair 2068 | |
| Joystick (IN 31) | Project to create a Spectrum joystick port on a cartridge for the TS 2068. | Timex/Sinclair 2068 |
| Keyboard Interface for the TS1000 and the 2068 | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| Larken Lines | Timex/Sinclair 2068 | |
| Letters | BBS software for 2068; redirect screen output to printer; circuit to map one key to two key closures; number of days between dates. | Timex/Sinclair 2068 |
| LKDOS Off Switch (For MAX DOS Operation) | Add an off switch to resolve conflicts with Oliger NMI functions. | Timex/Sinclair 2068 |
| Load/Save Switch | Timex/Sinclair 2068 | |
| Logic Analyzer | After seeing a $12,000 logic analyzer by Hewlett-Packard. I was going to build a logic analyzer controlled by my 2068. | Timex/Sinclair 2068 |
| Low Cost High Tech 2068 Burglar Alarm | How to use your 2068 as an alarm system, connected to the joystick ports. | Timex/Sinclair 2068 |
| Low Cost Voice Recognition for the TS-2068 | With a new chip recently offered for sale through Radio Shack distributors and a few other parts, a speaker-independent word recognition circuit can be easily and inexpensively built. This article will describe how to build the circuit and interface it to a TS2068 via a joystick port. | Timex/Sinclair 2068 |
| Make the Tasman 'B' Centronics Printer Interface Work with the Larken DS400 | Changes to make Tasman B and C printer interfaces work better with Larken disk system. | Timex/Sinclair 2068 |
| Make the Tasman 'B' CPI Work With the Larken DS-400 | Timex/Sinclair 2068 | |
| Make Your Own 2068 & TS1000 EPROM Progammer | Here is a project that will let you “burn” (program) EPROMS using your computer. It will handle either the 2764 type (8K bytes) or the 27128 (16K) EPROMs. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Making a Wafadrive Parallel Printer Cable | How to build a parallel (Centronics) printer cable that connects to the Rotronics Wafadrive. | Timex/Sinclair 2068 |
| Making a Wafadrive Parallel Printer Cable | Timex/Sinclair 2068 | |
| Memory Improves With Age | Timex/Sinclair 2068 | |
| Misc Notes: Monitor Problems | Timex/Sinclair 2068 | |
| Modifying the Star NX1000 with the AERCO Printer Interface | Timex/Sinclair 2068 | |
| My Pet Dinosaur | Interfacing a Model 28 teletype to a TS 2068. | Timex/Sinclair 2068 |
| On the Extra Simple Spectr/Emulator | Timex/Sinclair 2068 | |
| One Chip Mods: Kempstonize Your Joystick Port | Although the circuit described can be built on an external card perfectly well, it is somewhat unique in that it can be installed inside your TS2068, without interfering with the normal operation in any way. | Timex/Sinclair 2068 |
| Port Project #1: Data Communications Between Two Computers | This first project gives you the basis of a very useful application involving I/O ports–communicating between two computers. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Power Supply and the 2068 | Upgrading power supply and reducing noise. | Timex/Sinclair 2068 |
| Put MSCRIPT on EPROM | Describes how to make an AROS EPROM cartridge from the original MSCRIPT tape version. | Timex/Sinclair 2068 |
| Regulator Modification to 2068 | Timex/Sinclair 2068 | |
| Reset Switch for ZX81 and 2068 | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| Retrace Lines: 2068 and RGB Monitor | Like several others, I wanted to use the nifty thrifty Skip Fisher RGB monitor with both my fascinating and formidable QL and also with my trusty old friendly TS-2068. The hookup to the QL or the 2068 both gave the crisp colors known to most, but the 2068 made retrace lines across the top half | Timex/Sinclair 2068 |
| Reviving the 2068 Keyboard | Techniques for fixing a 2068 keyboard. | Timex/Sinclair 2068 |
| RGB Interface for the TS2068 | Ever since I purchased my TS2068 I have longed for a REAL RGB interface. Sure, the display is OK on my 19” Sony, but the color is “washed out” and there is that ever-present background hash. I thought that by attaching a composite monitor to the monitor jack would at least clean up the hash….but | Timex/Sinclair 2068 |
| RGB Monitor (for 2068) | Instructions for connecting RGB monitor with DIN (round) connector. Transistor sync separator circuit. | Timex/Sinclair 2068 |
| ROM Bypass Board PCB layouts | Timex/Sinclair 2068 | |
| ROM Bypass Circuit Description | Board to bypass 0-16K of the HOME bank and 0-8K of the EXROM bank. | Timex/Sinclair 2068 |
| ROM/EXROM Bypass Board for External Eproms | Notes and schematics that expand on William J. Pedersen’s ideas. | Timex/Sinclair 2068 |
| RS232 Port Added to Timex 2050 Modem Card | Timex/Sinclair 2068 | |
| RS232 Port Added to Timex 2050 Modem Card | Timex/Sinclair 2068 | |
| Run Your Memotech 64K on the 2068 | Advice on adding 64K RAM units to your 2068 system in a manner which would not require additions or modifications to the RAM pack. | Timex/Sinclair 2068 |
| Running the Unrunnable Spectrum Programs | Timex/Sinclair 2068 | |
| Saga 3 Elite Keyboard Review | Timex/Sinclair 2068 | |
| Sears RGB Monitor | Timex/Sinclair 2068 | |
| Signal Booster | Use an audio transformer to boost tape signal. Reprinted from Sincus News, May/June 1986. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Simple 2068 Out Port (Part 2) | Use optoisolators to protect computer from output circuitry. | Timex/Sinclair 2068 |
| Simple Output Port | Timex/Sinclair 2068 | |
| Simple RGB Adapter for the T/S 2068 | Timex/Sinclair 2068 | |
| Simple RGB Adapter for the TS 2068 | Timex/Sinclair 2068 | |
| Simple Sound Port | Add a simple sound port to the rear of a Larken disk interface. | Timex/Sinclair 2068 |
| Sinclair Talks to PC/XT | Routines to transfer files to/from a PC using a parallel printer interface. | Timex/Sinclair 2068 |
| Slave CPU Processing: Applicable to ANY Host Computer | Discusses how to apply techniques described in “Interfacing to S-100/IEEE 696 Microcomputers” by Sol Libes and Mark Garatz to the Timex Sinclair 1000 and 2068. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Some Short Projects for Your Timex Sinclair Computers | Adding a relay to the 2040 printer to fully power it off; build a case for Timex Command Cartridges. | Timex/Sinclair 2068 |
| Spectrum Buss on 2068 | Timex/Sinclair 2068 | |
| Spectrum Conversion Notes: The Spectrum Expansion Connector | Convert the 2068 expansion connector to a Spectrum connector; add pull-up resistors to the EXROM socket; Spectrum Hardware Manual by Adrian Dickens; Easy Add On Projects for Your Spectrum, ZX81 & ACE by Owen Bishop. | Timex/Sinclair 2068 |
| Spectrum Emulator | One of the biggest drawbacks of the 2068 is the selection of software available for it. With the project described here, you can run many Spectrum (48K) programs on your 2068. | Timex/Sinclair 2068 |
| Spectrum Emulator Revisited | Timex/Sinclair 2068 | |
| Spectrum Hardware Restart | Photocopied from the March 1986 issue of Practical Electronics. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Spectrum I/O Controller | Timex/Sinclair 2068 | |
| Spectrum Motherboard | Create an expansion board for your computer. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| SQ Notes: DIY ROM Switch | Timex/Sinclair 2068 | |
| Static RAM on Cartridge | One area which peaked my interest is the idea of adding more memory. I was excited about the idea of going beyond that 72 K boundry. I was not quite ready to take a jump an add a full 64 K, but a leap to 16 K, maybe. I had one of John Oliger’s User | Timex/Sinclair 2068 |
| Switchable Spectrum ROM Project for the TS 2068 | I recently purchased some Spectrum ROMs from Zebra Systems with the hope that I might be able to make my own “ROM-switch” circuit without having to pay the price of those that are commercially available. When I examined the TS-2068’s ROM circuitry I realized that this was an easier task than I had originally assumed. | Sinclair ZX Spectrum, Timex/Sinclair 2068 |
| T/S 2068-Spectrum ROM Module | Timex/Sinclair 2068 | |
| Tales From the Chip | Timex/Sinclair 2068 | |
| Tape Amplifier for Loading Weak Tapes | Circuit diagram for an op-amp based signal booster. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| The Art Gallery | These drawings were omitted from the article “Retrace Lines: 2068 and RGB Monitor” by Herb Schaaf, published in the January 1989 issue. | Timex/Sinclair 2068 |
| The Automatic Tape-Recorder Controller | Reprinted from Powerful Projects with Your Timex/Sinclair. | Timex/Sinclair 2068 |
| The Cassette Connection | In Volume 1, I ran a series on improving cassette reliability on the ZX81. Well, now that the TS2068 has arrived, that’s all obsolete, right? Wrong! If anything, in my experience the 2068 needs even more “outside help” in getting reliable loads. | Timex/Sinclair 2068 |
| The Cassette Connection | Timex/Sinclair 2068 | |
| The Digitizer | Timex/Sinclair 2068 | |
| The Digitizer | Timex/Sinclair 2068 | |
| The Digitizer | Timex/Sinclair 2068 | |
| The Digitizer and A Problem Found: Notes from Marty | Timex/Sinclair 2068 | |
| The Digitizer and What's Happening | Timex/Sinclair 2068 | |
| The IKI Interface | Schematic of IBM keyboard to TS 2068 interface. | Timex/Sinclair 2068 |
| The Interface Zero: Adding Microdrives to Your 2068 | Timex/Sinclair 2068 | |
| The Oliger System: Minireview | Timex/Sinclair 2068 | |
| The RGB to NTSC Converter In Other Words Rock Solid Video | Converter using LM1377, from article in December 1989 issue of Radio Electronics. | Timex/Sinclair 2068 |
| The Sinclair Z88: Considerations for Peripheral Design | Since the Z88 uses the Z-80 CPU, some of our better interfaces for the TS-2068 offer the prospects for easy adaptation to the Z88 by BUSS connector changes and re-work of chip addressing. Generally, the engineering has been accomplished for the Z-80 CPU and its 8 bit capability. One seemingly fruitful area is the disk | Cambridge Z88, Sinclair QL, Timex/Sinclair 2068 |
| The Sincus Light Pen | Timex/Sinclair 2068 | |
| The Sincus Light Pen TS2068: An Experimental Project | Timex/Sinclair 2068 | |
| The TS2068 Equipped with Microdrives & EMU-1 | Timex/Sinclair 2068 | |
| The ZX Printer and the 2068 | Timex/Sinclair 2068 | |
| TI99 Keyboard | So, you got one of those TI99 keyboards from Radio Shack for $2.95 and still have not wired it up to your 1000 or 2068, right? I was going to write this up a while ago, but I learned that so many different companies made the circuit boards that it would be difficult to give | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Timex 2068 EPROMs (Part 2) | Timex/Sinclair 2068 | |
| Timex 2068 User EPROMs | Timex/Sinclair 2068 | |
| Timex 2068/Epson RX80 | Timex/Sinclair 2068 | |
| TS 2068 Printer Interface | Build a printer interface that plugs in to the cartridge port. | Timex/Sinclair 2068 |
| TS 2068 Printer Interface | Part two of project to build a printer interface that plugs in to the cartridge port. Corrects issues with schematic in part one. | Timex/Sinclair 2068 |
| TS 2068-Spectrum ROM Module | Timex/Sinclair 2068 | |
| TS-2068 - CMOS on Board | Change most ICs on 2068 to CMOS to reduce power consumption, for running off batteries. | Timex/Sinclair 2068 |
| TS-2068 Cassette LOAD AID Meter | Reprinted from CRAGIST newsletter March/April 1989. | Timex/Sinclair 2068 |
| TS-2068 Home ROM Bypass | Timex/Sinclair 2068 | |
| TS-2068 Memory Expansion | Timex/Sinclair 2068 | |
| TS-2068 ROM ByPass Board Features and Options II | Timex/Sinclair 2068 | |
| TS-2068 with Unlimited RAM capability | Schematics and machine code to expand the 2068 RAM with port buffer, clock/calendar, 56K or 64K, expansion bank controller and proper address decoding for EXROM. | Timex/Sinclair 2068 |
| TS2068 Digitizer | The club is selling digitizer boards. – For one assembled, tested and shipped the cost will be $49.95 + $3 shipping and handling. If you only want the bare board it will be $19.95 + $3 s&h. The board has a leading edge connector and is ready for a mother board. If you want a | Timex/Sinclair 2068 |
| TS2068 Reset and Initialization Problems With Solution | Reset solution for TS 2068. Works with base computer and expanded systems. | Timex/Sinclair 2068 |
| TS2068 Reset and Initialization Problems with Solution | Describes how to add a reset switch to the 2068. | Timex/Sinclair 2068 |
| TS2068 Reset and Initialization Problems with Solution | Timex/Sinclair 2068 | |
| TS2068 Serial Cable | Timex/Sinclair 2068 | |
| TS2068/Spectrum Microdrive | Timex/Sinclair 2068 | |
| Twister with power schematic | Timex/Sinclair 2068 | |
| Two-Fer One: A Double Duty Oliger Board | Timex/Sinclair 2068 | |
| Universal LROS/AROS Development Board | Timex/Sinclair 2068 | |
| Universal LROS/AROS/Development Board Schematic | Timex/Sinclair 2068 | |
| Update 2: Interface Zero Resistor | Timex/Sinclair 2068 | |
| Updates | Timex/Sinclair 2068 | |
| Updates | Timex/Sinclair 2068 | |
| Upgrading to a "Real" Keyboard: E-Z Key Makes It Easy | Schematic to add a keyboard that plugs into the expansion port. This is the same interface that is used in the E-Z Key 60. | Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 1500, Timex/Sinclair 2068 |
| Using Double-Sided Drives with Timex Disk Controllers | Timex/Sinclair 2068 | |
| Using the "Tomy Tutor" Recorder with TS-2068 | Timex/Sinclair 2068 | |
| Video Board Upgrade for Your TSZX | Timex/Sinclair 2068 | |
| Wafadrive/RS-232/Xerox Memorywriter | Timex/Sinclair 2068 | |
| Z-SI/O Serial Interface | Timex/Sinclair 2068 | |
| ZVoice | Reprint of ZVOICE. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| ZX Resources: Transferring Between Computers | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| ZX81/TSXXXX Out-Board Real-Time Clock | Timex/Sinclair 1000, Timex/Sinclair 2068 | |
| ZXVoice | Timex/Sinclair 1000, Timex/Sinclair 2068 |