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Hardware projects & new boards

DIY hardware projects and newly-made boards — PCB/KiCad/Gerber, CPLD/FPGA/GAL, expansion and interface boards.

268 threads · 2255 messages · 2002-06-17 → 2026-10-09

DIY hardware is mostly a groups.io-era story, but the Yahoo list laid the groundwork. Its 2005 "Digest Number 261" thread was mostly nostalgia and emulator talk, with Jeff Burrell explaining that Sinclair's tokenized keyboard saved ROM space. Between 2013 and 2019 the "Switchable ROM modification" thread covered Richard Atkinson's mod, which uses the channel 2/3 switch to choose between Spectrum and TS2068 ROMs, plus Spectranet questions and where to buy Twister boards and joystick cards. These were the first modern Spectrum-compatibility add-ons many members bought.

From 2021 a steady pipeline of new boards appeared. Jeff Burrell proposed an FPGA video upgrade board that mirrors video-RAM writes out to VGA; it fed into his FPGA work booting the 2068 with UnoDos/esxDOS and a 1MB SRAM. François Lanciault urged reusing Interface 1 syntax, as his Interface 1bis had done. David Anderson's Twister board gained built-in Kempston, and the divMMC thread raised the 2068's weak 5V regulator as a real limit on stacking add-ons. Tim Horner (Tim H) and Willie Jones routed a 100x100mm KiCad/EasyEDA board reviving a Timex video digitizer from old newsletters. David and Tim H also designed Willie's 2068 relay board (74x688 decoding with HCT logic). Eduardo Fuentes designed a Larken-inspired RAM expansion that maps all 64K in 8K chunks for real CP/M, with Gustavo Pane writing a CP/M 2.2 BIOS and Claudius taking on the PCB. ChazzMan began re-laying out the Larken 256K RAMdisk. Other projects included 3D-printed cartridge shells from Joao's STL files (ordered via JLCPCB), Jon's resin tsPico enclosure, and Tim H's Arduino-driven ZX Printer.

Carl Miles has been the most prolific builder. He made a TS1510 cartridge-player clone with flash ROM and, with Ryan Gray's p2ts1510 tool, redesigned interface and cartridge PCBs (including a 512K cart) that sold to members in several countries. He also did a TS1000-to-TS1500 conversion using real TS1500 ROMs, restored and converted TS2050 modems to serial (David confirmed a TTL adapter can tap the 8251's RX/TX pins directly), and in 2025 built the "Interface Zero" board: an Interface 1 clone with a Spectrum ROM switcher for Microdrives. Jeff warned that IF1 system variables collide with the 2068's. In the 2024 main-PCB thread, Josef Jelinek asked about a cleaner 2068 motherboard. Johnny Red noted that the Portuguese TC2068 already fixed much of this. Don Dindang offered his Harlequin-based TC2048 clone, which supports 2068 HOME/EXROM but not DOCK yet, and Claudius flagged its /INT timing, which is 15 T-states off from real Timex hardware.

Several threads only drifted here: the Timeblasters disassembly (whose stray message was a Dual Bus DMA comment), the Timex 3256 prototype / "Timex IIGS" daydreaming, the renumber-program thread, Tim H's TS2068 typeface work that merged into a ZX81 motherboard-origins discussion, and Yahoo digest chatter.

Key threads

All threads (268)

↳ marks a thread where this topic begins mid-conversation — the link jumps to the message where it starts.

Thread Msgs Activity Started by
⭐ TS1510 on ebay ↳ #5962 📎 81 💬 2024-03-18 Carl Miles
⭐ UnoDos and the TS2068 79 💬 2022-08-25 JEFFREY L BURRELL
⭐ Timex 2050 Modem and Serial Port Conversion ↳ #5493 📎 53 💬 2026-02-10 Adam Trionfo
⭐ Timex Computer 3256 Prototype 📎 47 💬 2023-12-09 Adam Trionfo
⭐ Timex Digitizer was: Even more newsletters, featuring Willie Jones! ↳ #1693 📎 45 💬 2022-07-20 David Anderson
⭐ 2068 relay board 📎 43 💬 2022-07-06 Tim H
⭐ Larken 256K RamDisk ↳ #1685 📎 40 💬 2022-06-28 Neil C.
⭐ Archiving "Timeblasters" by Calliope Software ↳ #3365 📎 37 💬 2023-05-05 Adam Trionfo
⭐ Video Upgrade Board for TS2068 📎 36 💬 2022-05-23 JEFFREY L BURRELL
⭐ New batch of REDESIGNED TS1510 CLONE Interface and Cartridges for purchase... 📎 34 💬 2026-03-09 Carl Miles
⭐ Real CP/M on TS-2068 📎 34 💬 2024-03-27 Eduardo Fuentes
⭐ Renumber Programs ↳ #4871 📎 33 💬 2023-11-18 Jay Carlson
⭐ TS1000 -> TS1500 Conversion Project 📎 31 💬 2024-02-22 Carl Miles
⭐ Digest Number 261 28 💬 2005-07-09 James Diffendaffer
⭐ First steps in getting Microdrives running on a TS2068... 📎 27 💬 2025-11-09 Carl Miles
⭐ Switchable Timex Sinclair 2068 ROM modification 📎 26 💬 2019-06-23 Richard Atkinson
⭐ Any TS 2068 main PCB updates? 📎 25 💬 2024-08-25 josef.jelinek
⭐ Printing from Arduino to a ZX Printer 📎 25 💬 2022-10-09 Tim H
⭐ ZX81 / TS1000 Motherboard 📎 25 💬 2025-04-01 Ryan Gray
⭐ I Got My Spectrum divMMC Today! 📎 25 💬 2022-01-30 Adam Trionfo
⭐ New Mexico Timex Companies; was: ROM code calls in the 2068 📎 22 💬 2023-05-19 Adam Trionfo
⭐ TS2068 twister boards 22 💬 2011-01-21 zxbruno
⭐ Serial Port Cards for TS2068 - 10 Ordered 📎 22 💬 2023-06-20 Michael A. Druckenmiller
⭐ TS2068 Sound Issue ↳ #5771 📎 21 💬 2024-01-25 Carl Miles
⭐ TS1510 clone 📎 21 💬 2009-07-22 Luis Alberto D'Ardis
⭐ TS2068 Spectrum ROM/emulator board/etc 18 💬 2011-05-24 pxx1_2000_32724
⭐ Interesting announcements from last night’s Load ZX Museum livestream 📎 18 💬 2023-11-03 David Anderson
⭐ JLO Disk Boards & Printer Board 📎 17 💬 2024-09-13 Adam Trionfo
⭐ YUV to RGB conversion PCB from David... 📎 17 💬 2024-01-14 Carl Miles
⭐ Video Board Update 📎 16 💬 2023-05-16 JEFFREY L BURRELL
⭐ TS Pico interface 16 💬 2022-11-25 Ricardo Calcagno
⭐ 2068 ROM Sources ↳ 16 💬 2004-08-03 aralbrec
⭐ Twister Board 📎 16 💬 2011-09-08 Hector Jorge Picone
⭐ TS2068 Serial Port Cards - Busted 📎 16 💬 2023-06-22 Michael A. Druckenmiller
⭐ Potential full color video solution 📎 16 💬 2021-10-27 David Anderson
⭐ Sinclair ZX80 and the Chroma80 ↳ #6224 📎 15 💬 2024-03-30 Carl Miles
⭐ A glorious day! ↳ #79 📎 15 💬 2022-03-31 Adam Trionfo
⭐ JLO Disk Interface 📎 14 💬 2022-01-28 Willie Jones
⭐ CZ2000 to TS2000 Prototype Conversion Project 📎 13 💬 2024-07-27 Carl Miles
⭐ Michaud/SMUG video digitizer 13 💬 2022-07-17 David Anderson
⭐ Working TS2068 VU-3D Cartridge .dck file ↳ #9742 📎 12 💬 2026-08-25 Jon
⭐ FPGA TS2068 12 💬 2016-05-16 jburrell7
⭐ Terminator 1000 - batery powered Timex 1000 📎 12 💬 2024-07-01 Greg Skuza
⭐ Investigating the Spectrum's RS232 Interface (ZX Interface 1), for a potential 2 ↳ #6326 📎 12 💬 2024-03-14 Jon
⭐ TS-Pico Expansion Board 📎 12 💬 2023-11-22 Carl Miles
⭐ RGB Adapter for T/S 2068 📎 11 💬 2012-03-10 Rod H
⭐ FPGA Version of TS2068 - Need Opinions 11 💬 2009-08-24 cheveron
⭐ Wifi modem for TS-2068 via joystick port 📎 10 💬 2024-10-23 Ricardo Calcagno
⭐ Introducing Super2068 ↳ #9657 10 💬 2026-08-15 Charlie Day
⭐ Timex 2068 cartridges... home made ones too 10 💬 2006-05-15 M. Emrah Oral
⭐ Hardware help? 📎 10 💬 2023-02-25 David Anderson
⭐ FuJinet 9 💬 2024-10-15 Floppy Days Podcast - Ra
⭐ TS-2068 128K 9 💬 2019-08-03 fuentesea
⭐ Request: Twister board feedback 9 💬 2012-07-06 Al Hartman
⭐ CDs as a storage device -- my successes and failures thus far 9 💬 2004-10-24 Bruno Florindo
⭐ rare schematic 9 💬 2011-08-11 sssteve5
⭐ ZX-Wespi-Nano project 9 💬 2025-11-18 larry lorenson
⭐ Power Circuitry Replacement 9 💬 2023-12-26 David Anderson
⭐ Starting to design a TS1560 "Bus Expansion Unit" for the ZX81/TS1000/TS1500 - Br 9 💬 2025-02-10 David Anderson
⭐ ROM replacement services 9 💬 2007-05-09 Jarek Adamski
⭐ TS2068 and arduino 8 💬 2014-12-29 marcel.racine22
⭐ Have Twister board, now what? 8 💬 2011-09-08 Mark Martin
⭐ Would anyone be interested in a TS2068 version of the DTV64? 8 💬 2011-07-06 cheveron
⭐ Timex Sinclair PROM Burner 📎 8 💬 2024-02-21 andy
⭐ Convert TS2068 into ZX Spectrum 128K 8 💬 2008-07-03 zxbruno
⭐ TS 2068 Edge Connector Source / Advice for RGB Connection 8 💬 2008-01-07 Adam Trionfo
⭐ Proposal for FPGA based advanced 2068 7 💬 2021-05-15 jburrell7
⭐ Yamaha Sound from Speaker or TV 📎 7 💬 2017-04-04 Adam Trionfo
⭐ Been busy but have some good news (twister board) 7 💬 2009-04-01 zxbruno
⭐ TS2068 FujiNet 7 💬 2022-04-30 thatoldnerd
⭐ Serial Port Works 📎 7 💬 2023-07-18 kevin.personal
⭐ redesigned ts1510 clone 7 💬 2024-12-15 larry lorenson
⭐ TS2068 Cartridge Boards - Somethings Wrong ↳ #3507 📎 6 💬 2023-05-15 David Anderson
⭐ Hybrid 2068/spectrum 48k rom mod 6 💬 2014-03-31 quantam2001
⭐ TS2068 switchable ROM Method 6 💬 2014-01-07 Chris Raynak
⭐ T/S 2068 version of a ZXSpand 6 💬 2012-06-20 John
⭐ New FPGA Board 6 💬 2022-11-19 JEFFREY L BURRELL
⭐ "Building the Backplane Connector" 6 💬 2010-03-07 Adam Trionfo
⭐ Lack of cartridge port on updated 2068 6 💬 2023-09-21 David Anderson
⭐ TS-1500 Schematic 📎 6 💬 2022-03-10 Carl Miles
⭐ Timex Sinclair Online User Group Meeting Sunday, Sept 17 6 💬 2023-09-16 David Anderson
⭐ A breakthrough! 6 💬 2023-06-30 David Anderson
⭐ TS2068 simple upgrade: 512kB RAM, 128kB PEROM 5 💬 2005-08-14 Jarek Adamski
⭐ TS2068 Expansion Interface Specification 5 💬 2004-07-12 Jack Boatwright
⭐ Redesigned TS1510 Clone Cartridge & Interface PCBs have arrived... 📎 5 💬 2024-11-11 Carl Miles
⭐ New Replacement Faceplates / Keyboard Overlays 4 💬 2019-02-14 Rich M
⭐ ROM Cartridge Address Decoding 4 💬 2015-08-28 Mark J. Blair
⭐ new CPLD working (only with z80 nmos cpu) 4 💬 2026-04-29 antonio vitor
⭐ Twister board schematic 📎 4 💬 2013-11-11 Phoebus Dokos
⭐ PCB files for the Twister Project 4 💬 2012-08-30 Oscar Arthur Koepke
⭐ Ariel Ranieri’s EPROM cartridges 📎 4 💬 2022-11-19 David Anderson
⭐ Starting the upgrade to Adam's TS2068 - Power Supply and AY Stereo Sound 📎 4 💬 2025-10-27 Carl Miles
⭐ Twister boards (update) 4 💬 2010-04-17 zxbruno
⭐ 2068 expansion interface mock up 📎 4 💬 2022-03-09 Willie Jones
⭐ RAS/CAS timing from SCLD to lower RAM 📎 4 💬 2023-09-15 David Anderson
⭐ Hi-Res Upgrade 4 💬 2025-03-09 larry lorenson
⭐ JLO DIsk Boards A & B and Printer Interface 4 💬 2023-08-03 Willie Jones
⭐ An external expansion to 128K RAM for TS/TC2068 📎 4 💬 2022-02-02 Claudius
⭐ Pinout of Oliger expansion board 📎 4 💬 2021-12-28 David Anderson
⭐ ZX81/TS1000/TS1500 System ROM Replacement Cartridge and Interface PCB running SP 📎 4 💬 2024-12-21 Carl Miles
⭐ Modified Openspand - Sneek Peak 📎 3 💬 2026-06-05 Don Crawford
⭐ TS1500 cost reduction version Diagram 📎 3 💬 2026-05-19 Joao Diogo Ramos
⭐ ZX81+38 clones 3 💬 2024-07-10 RichJ
⭐ TC 2068 no bright black mod 3 💬 2024-07-03 Carl Miles
⭐ TS1000 expansion connector 3 💬 2025-07-25 Jim Lawson
⭐ Dan's Roy's ZX81 Motherboard Upgrade 3 💬 2022-05-03 Adam Trionfo
⭐ Cartridge door (3D model) 📎 3 💬 2022-02-21 Claudius
⭐ Cartridge Board with Zif Socket 📎 3 💬 2022-02-15 Willie Jones
⭐ FPGA Board Update 3 💬 2021-11-08 JEFFREY L BURRELL
⭐ Mahjongg ZX81+38 clone "NO DELETE" fix! 📎 2 💬 2024-10-04 RichJ
⭐ Spectrum 1-chip IDE interface <--> 2068? 2 💬 2005-09-12 bryankvines
⭐ follow up on ZX81 clone project 2 💬 2024-07-11 RichJ
⭐ TS2068 expansion port and cartridge port pinout diagrams? 2 💬 2013-04-27 unbonnevie
⭐ Digital ZX81/TS1000 back porch mod for 2C184 or earlier ULA 📎 2 💬 2026-03-04 RichJ
⭐ EPROM copier 📎 2 💬 2024-04-02 RichJ
⭐ WC2050 Hack to convert to serial port... 2 💬 2003-08-28 Louis Florit
⭐ Getting the BRIGHT signal 2 💬 2021-08-24 David Anderson
⭐ Old TS1000 and ZX81 digital back porch generator 1 💬 2026-10-09 RichJ
⭐ update regarding ZX81+38 problems 1 💬 2024-10-09 RichJ
⭐ Timex 2000 Prototype Reproduction Video: Part 1 1 💬 2024-08-04 Adam Trionfo
⭐ ZXIO V2 Experimenters Kit 1 💬 2024-06-25 David Anderson
⭐ New batch of RESDESIGNED TS1510 CLONE External Eprom 1 💬 2026-03-12 larry lorenson
⭐ ZX81 replica PCBs 1 💬 2025-03-17 Tim H
⭐ PicoCartridge2068 📎 1 💬 2026-08-13 Jon
⭐ ZX81/TIMEX-SINCLAIR 1000 Custom Mechanical Keyboard Prototype - Part 3 1 💬 2023-07-03 Adam Trionfo
⭐ Update ZX81NU systems 📎 1 💬 2025-01-18 RichJ
cartridge cases for the TS2068 📎 26 💬 2023-08-25 David Anderson
TS Pico Enclosure 📎 24 💬 2023-12-23 Jon
Spectrum Next Availability? 📎 22 💬 2026-01-11 Adam Trionfo
Who knows how to build their own hardware... 18 💬 2008-06-23 M. Emrah Oral
Old newsletters to give away ↳ 17 💬 2008-08-13 Don Dindang
Christmas tunes played on the TS 2608 ↳ #7387 📎 17 💬 2024-12-05 Adam Trionfo
Beepers: 21 Electronics Projects for the Timex/Sinclair 1000 and 1500 Book ↳ #3634 📎 15 💬 2023-05-31 Michael A. Druckenmiller
Random hardware 📎 13 💬 2023-05-10 Michael A. Druckenmiller
Well I finally added the Z88 to my collection... 📎 13 💬 2024-09-26 Carl Miles
"Reel to Reel" cassette player in big iron style. ↳ #9449 📎 13 💬 2026-06-01 Michael Hart
Need additional moderators ↳ 12 💬 2011-06-24 Louis Florit
Robotics and the Sinclair and Timex computers 📎 12 💬 2025-10-09 Richard Rowland
E-Z Keyboard Interface 📎 12 💬 2024-01-14 Richard Burt
VCF Midwest in September 2025 - Tables ↳ #8151 12 💬 2025-05-30 David Anderson
ZX81 / TS1000 Bus extender 📎 11 💬 2022-08-29 Willie Jones
USB ↳ 10 💬 2004-08-04 aralbrec
TS Online User Group Meeting Monday October 6 📎 10 💬 2025-10-05 Adam Trionfo
TS Online User Group Meeting Monday March 31⚠️ ↳ #7871 📎 10 💬 2025-03-31 David Anderson
3” disks to borrow? 9 💬 2021-12-18 Neil C.
T/S 2068 Type-In's ↳ #344 9 💬 2021-09-01 JEFFREY L BURRELL
[SpecDrum] - Information 8 💬 2006-12-14 [CVN].Gitann0
A little something I'm working on 8 💬 2026-06-29 Luis Alberto D'Ardis
New Interface - Yet Again 8 💬 2004-07-19 Jeff
Timex 2068 Relay board 📎 8 💬 2021-08-13 Willie Jones
Compatible low profille keyboard for TS1000 keycaps? 📎 7 💬 2026-04-25 Michael Hart
Testing my new TSPico and VGA video cards 7 💬 2024-06-26 JEFFREY L BURRELL
rtty 7 💬 2012-01-11 Billiam
Twister Boards - good news 7 💬 2011-08-26 zxspectrum128
A future project. 📎 7 💬 2025-01-08 Christian Mann
Timex/Sinclair Online User Group Meeting: Sunday, March 19 6 💬 2023-03-20 David Anderson
Romswitch - nice surprise 📎 6 💬 2024-07-10 John Lech
16k ROM on a Zeddy 📎 6 💬 2024-06-24 Ryan Gray
Interface Cost 6 💬 2004-11-27 bryankvines
BB-1 Control Module 📎 6 💬 2024-02-22 andy
TS 2068 RS-232 output from joystick port details 📎 6 💬 2024-01-17 qwertyfan2000
Thought experiment - Interfacing a TS2040 Printer to something more modern? 6 💬 2022-06-16 David Anderson
Game Title from zoom meeting ↳ #8241 📎 6 💬 2025-06-23 Paul Anderson
ZX spectrum keycaps 6 💬 2025-06-03 Tim H
2060-like expansion unit ideas 📎 6 💬 2023-11-06 David Anderson
TS 1500 Computer Padded Case ↳ #7959 6 💬 2025-04-19 SuperMikeNJ
Found this on eBay 📎 6 💬 2024-11-20 Greg Skuza
ZX81 clone saga continues 📎 5 💬 2024-07-18 RichJ
to David 5 💬 2024-07-07 RichJ
VCF exhibiting 5 💬 2026-01-20 David Anderson
Interface PCB 5 💬 2004-09-23 Jeff
rx-81 zodex (or Budget robitics) expansion board 📎 5 💬 2025-10-08 Richard Rowland
projects update 5 💬 2010-09-07 cheveron
Best Address in 16MB to decode EXROM, DOCK and Main into 5 💬 2023-11-24 Michael A. Druckenmiller
TS2068 FPGA implementation 5 💬 2023-08-25 Phoebus R. Dokos
ZX80 badge for VCF 4 💬 2024-10-20 Lee Hart
Universal Memory Cartridge Board 4 💬 2006-07-19 Jarek Adamski
Call for topics and questions: Sunday, Mar 19 meeting 4 💬 2023-03-16 David Anderson
Repurposing a ZX81 RAM pack 4 💬 2024-06-24 Ryan Gray
TS Expansion Interface 4 💬 2004-11-28 Jeff
FPGA Configuration 4 💬 2004-08-12 aralbrec
2068 Interface 4 💬 2004-07-21 aralbrec
Emulator keyboard 📎 4 💬 2022-10-25 Ryan Gray
Zebra OS-64 📎 4 💬 2022-09-24 Adam Trionfo
programmable joystick 📎 4 💬 2025-06-03 larry lorenson
ZX divIDE+ interface / Polish postal service, ZX-Matrix, Sinclair USB 4 💬 2008-07-15 M. Emrah Oral
Powerful Projects with your Timex/Sinclair 4 💬 2008-02-18 Adam Trionfo
Powerful Projects with your Timex/Sinclair‏ 4 💬 2008-02-12 Bill Loguidice
RS232/wifi 📎 4 💬 2021-12-21 David Anderson
ZX81NU ZX81 clone 3 💬 2024-10-02 RichJ
Zebra joystick 3 💬 2023-04-26 larry lorenson
Twister boards 3 💬 2026-05-28 David Laffineuse
New TS2068 Computer Possible? 3 💬 2005-09-16 Jeff
ZX-Spectrum 48k Clone 3 💬 2014-05-10 alhartman6
using ts1000 ROM in the mahjong zx81 +38 kit 3 💬 2024-05-28 RichJ
Update for TS Interface 3 💬 2004-11-17 Jeff
Updates... 3 💬 2004-10-24 indygolunaria
Expansion Interface 3 💬 2004-08-25 Jeff
Interface Codec 3 💬 2004-08-09 Jeff
General Interface Stuff 3 💬 2004-08-05 Jeff
Interface Schematics 3 💬 2004-07-19 Jeff
Some Projects 3 💬 2004-07-07 Jack
YAMOD.ATBUS - fast IDE multiplexer 3 💬 2004-07-06 Jarek Adamski
CD-ROM for TS computers 3 💬 2004-01-21 stevenreardon
TS-2068 /1000 Files (PDF's) of Hardware 3 💬 2009-03-31 Neil
Wireless ZX Spectrum :)‏ 3 💬 2008-02-14 Adam Trionfo
zx wespi board 3 💬 2025-03-11 larry lorenson
Good Morning - Where's my head at 3 💬 2023-08-22 David Anderson
ROM replacement on the 2068 3 💬 2007-05-29 Rod H
Questions about ts2068cart ↳ 2 💬 2017-12-12 shanedownes
Question for the technical guys 2 💬 2005-12-25 Paulo Leite
TS2068 Power supply & Rom Switch 2 💬 2014-01-31 rjburt56
Overload the Buss 2 💬 2012-09-19 pxx1_2000_32724
Hackaday on the 1000 keyboard 📎 2 💬 2022-10-25 David Anderson
New bus interface for ZX Spectrum! 2 💬 2003-07-19 Jarek Adamski
Sound Signal on P1 Connector 2 💬 2010-03-05 Adam Trionfo
Spectrenstein Mk I 📎 2 💬 2025-07-21 Christian Mann
ZX keyboard beeper 2 💬 2022-05-05 Jeff Mazur
RC2014 Pro - Homebrew Z80 Computer Kit 2 💬 2023-09-27 John Mobley
FPGA Board Blurb 2 💬 2023-06-19 JEFFREY L BURRELL
256K Memory Expansion ↳ #9566 📎 2 💬 2026-07-14 Gus Lahoski
Amplifying the AY-3-8912 through jack 1 💬 2024-10-22 Fabrizio
Zx81Nu info 1 💬 2024-10-03 RichJ
TS2068 Cartridge Board 1 💬 2018-07-06 alhartman6
S-100 connection 1 💬 2026-06-29 David Anderson
Network interface on 8251 USART 1 💬 2006-04-05 Jarek Adamski
ZX1541 - new schematics and description, etc... 1 💬 2006-03-24 Jarek Adamski
NTSC beta tester wanted 1 💬 2006-03-11 Andrew Owen
Build a Microcomputer-Controlled Robot by B.C. Taylor 1 💬 2015-12-08 des.1950
TS-2068 Cartridge Boards... 1 💬 2015-11-10 alhartman6
TSPico beta testing and ZX81+38 clone 📎 1 💬 2024-06-12 RichJ
Bus splitter - request for comments. 1 💬 2005-03-23 Jarek Adamski
ZX Spectrum Laptop 1 💬 2012-08-20 pxx1_2000_32724
CD as a mass storage device -- Success and failure so far. 1 💬 2004-09-17 hatulzabad
FPGA Configuration Redux 1 💬 2004-08-15 Jeff
Quicksilva ZX80/ZX81 Hardware 1 💬 2024-03-18 Adam Trionfo
ROM Chips 1 💬 2011-10-04 Rich M
potential topic for hardware folks to explore 1 💬 2024-03-10 Paul Holmgren
Highspeed Bus Expansion 1 💬 2004-07-06 Jeff
My idea for memory upgrade 1 💬 2004-07-06 Jarek Adamski
2068 Project 1 💬 2004-07-01 Jeff
2068 Expansion 1 💬 2004-06-25 Jeff
ROMSWITCH 1 💬 2011-05-21 pxx1_2000_32724
Hardware Hacking on the TS2068 - Redo 1 💬 2004-02-17 jburrell7
Hardware Hacking on the 2068 1 💬 2004-02-17 jburrell7
SP0256-AL2 and CTS256-AL2 chipsets 📎 1 💬 2003-09-13 Stephen Wenzler
Suntronics Full Size Keyboard Conversion 1 💬 2003-06-26 Louis Florit
I'M ALIVE ;) (TS audio output) 1 💬 2010-03-04 MISTER BEEP
ebay: Byteback module.... 1 💬 2002-06-17 Louis Florit
24 Bit Addressing Concept Maybe 📎 1 💬 2023-11-30 Michael A. Druckenmiller
Where to submit hardware to be made? 1 💬 2009-03-23 zxbruno
TS2068 update opinion 1 💬 2025-05-05 Jay M
3D printed cases 1 💬 2023-08-13 Floppy Days Podcast - Ra
Starting to design a TS1560 "Bus Expansion Unit" for the ZX81/TS1000/TS1500 1 💬 2025-02-10 larry lorenson
Off Topic CP/M Freebie 1 💬 2022-01-26 JEFFREY L BURRELL
2023-06-27 Serial Port Update 1 💬 2023-06-27 Michael A. Druckenmiller
TS1510 new system and info on the ZX81NU build PCB I sent to you. 📎 1 💬 2025-01-03 RichJ
TS1500 cartridge systems 1 💬 2024-12-19 RichJ
FPGA Stuff 1 💬 2004-07-26 Jeff
Audio Card 1 💬 2004-07-24 Jeff
ZX Spectrum single-board computer with a built-in keyboard and display 1 💬 2024-11-21 peyton.bratton
Timex Sinclair Online User Group Meeting Sunday, Oct 15 5 💬 2023-10-24 David Anderson
zx81NU PCB 2 💬 2024-10-29 RichJ
Computer Kits; was: RE: Average age of group members‏ 2 💬 2008-01-11 Adam Trionfo
To Carl 1 💬 2024-05-31 RichJ
Next group Zoom meeting: Sunday, Nov 19 1 💬 2023-11-13 David Anderson
Reminder: Zoom meeting on Monday, Nov 6th 1 💬 2023-10-31 David Anderson
This evening’s meeting: Clark Calkins, Ingo’s big ZX adventures 1 💬 2023-07-03 David Anderson