#digitallogic — Public Fediverse posts

Release: fsm-toolkit v0.9.5

fsm-toolkit is a Go toolkit for designing and analysing finite state machines. It provides a CLI tool (fsm) and a full TUI editor (fsmedit) supporting DFA, NFA, Mealy, and Moore machines — with multi-machine bundles, cross-machine linking, and a component system backed by reusable class libraries.

Repo:

https://github.com/ha1tch/fsm-toolkit#readme

This is the biggest release since the project's inception bringing a component-oriented workflow to FSM design. You can now drag 74xx-series digital logic parts from a library drawer, assign typed properties to states, link machines into bundles, and manage it all from the TUI. Builds and releases for 12 platforms are now fully automated.

New: Editor Manual

https://github.com/ha1tch/fsm-toolkit/blob/main/cmd/fsmedit/MANUAL.md

New: Workflow Guide

https://github.com/ha1tch/fsm-toolkit/blob/main/WORKFLOWS.md

Highlights

% Multi-document bundles with import and cross-machine navigation
% Class and property system with 7 typed fields
% Component drawer with drag-and-drop instantiation
% 74xx-series class libraries (49 components across 7 families)
% Machine manager with rename/delete and link propagation
% Settings screen with vocabulary customisation and library loading
% Improved TUI layout engine with cell-grid metrics
% CI/CD pipeline targeting 12 platforms (Linux, macOS, Windows, FreeBSD, OpenBSD, NetBSD)
% Separate CLI and editor manuals
% 261+ tests passing

Changelog:

https://github.com/ha1tch/fsm-toolkit/blob/main/CHANGELOG.md

#golang #foss #programming #compsci #fsm #digitallogic #tui #statemachines #electronics

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

One Open-source Project Daily

Digital logic design tool and simulator

https://github.com/logisim-evolution/logisim-evolution

#1ospd #opensource #circuit #circuits #digitalcircuit #digitalcircuits #digitallogic #digitallogicdesign #education #fpga #logic #logisim #logisimevolution #simulator #timingdiagram #verilog #vhdl

C64 Sprite Controller: Dr Matt Regan Brings Sprites to a Scratch-Built Commodore 64
#Commodore64 #C64 #RetroComputing #DigitalLogic #TTL #EPROM #HardwareHacking #ComputerArchitecture #Sprites #DrMattRegan
https://theoasisbbs.com/c64-sprite-controller-dr-matt-regan-brings-sprites-to-a-scratch-built-commodore-64/?fsp_sid=2402

C64 Sprite Controller: Dr Matt Regan Brings Sprites to a Scratch-Built Commodore 64
#Commodore64 #C64 #RetroComputing #DigitalLogic #TTL #EPROM #HardwareHacking #ComputerArchitecture #Sprites #DrMattRegan
https://theoasisbbs.com/c64-sprite-controller-dr-matt-regan-brings-sprites-to-a-scratch-built-commodore-64/?fsp_sid=2402

C64 Sprite Controller: Dr Matt Regan Brings Sprites to a Scratch-Built Commodore 64
#Commodore64 #C64 #RetroComputing #DigitalLogic #TTL #EPROM #HardwareHacking #ComputerArchitecture #Sprites #DrMattRegan
https://theoasisbbs.com/c64-sprite-controller-dr-matt-regan-brings-sprites-to-a-scratch-built-commodore-64/?fsp_sid=2402

C64 Sprite Controller: Dr Matt Regan Brings Sprites to a Scratch-Built Commodore 64
#Commodore64 #C64 #RetroComputing #DigitalLogic #TTL #EPROM #HardwareHacking #ComputerArchitecture #Sprites #DrMattRegan
https://theoasisbbs.com/c64-sprite-controller-dr-matt-regan-brings-sprites-to-a-scratch-built-commodore-64/?fsp_sid=2402

C64 Sprite Controller: Dr Matt Regan Brings Sprites to a Scratch-Built Commodore 64
#Commodore64 #C64 #RetroComputing #DigitalLogic #TTL #EPROM #HardwareHacking #ComputerArchitecture #Sprites #DrMattRegan
https://theoasisbbs.com/c64-sprite-controller-dr-matt-regan-brings-sprites-to-a-scratch-built-commodore-64/?fsp_sid=2402

It all traces back to the NANDs, maaaan. ​:neofox_book_owo:​ Government has been trying to cover up their existence for years.
#digitallogic #hdl #aliens #nands

2025 Component Abuse Challenge: Digital Logic With Analog Components https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components - [Tim] noticed recently that a large number of projects recreating discrete logic t... - https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components - [Tim] noticed recently that a large number of projects recreating discrete logic t... - https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components - [Tim] noticed recently that a large number of projects recreating discrete logic t... - https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components - [Tim] noticed recently that a large number of projects recreating discrete logic t... - https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

2025 Component Abuse Challenge: Digital Logic With Analog Components - [Tim] noticed recently that a large number of projects recreating discrete logic t... - https://hackaday.com/2025/10/04/2025-component-abuse-challenge-digital-logic-with-analog-components/ #componentabuse #digitallogic #multiplexer #contests #analog #switch #latch #logic #gate

https://www.europesays.com/uk/173931/ The Computing Industry is Running Out of Energy #ArtificialIntelligence #ChipTechnology #ComputerChips #Computing #DigitalLogic #EnergyEfficiency #Moore'sLaw #QuantumComputing #ReversibleComputing #semiconductors #Technology #TechnologyInnovation #UK #UnitedKingdom

@CliffWade Yeah, it's really nice. It saved my butt during COVID, as I could use it to continue teaching my embedded systems class, which has a considerable hands-on component. Together with simulator.io for the #digitalLogic part, it worked out pretty well.

https://simulator.io

Mechanical Logic Gates With Amplification https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #Science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #Science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #Science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #Science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification - One of the hardest things about studying electricity, and by extension electronics... - https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification - One of the hardest things about studying electricity, and by extension electronics... - https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification - One of the hardest things about studying electricity, and by extension electronics... - https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification - One of the hardest things about studying electricity, and by extension electronics... - https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #science #analogy #capstan #analog #pulley

Mechanical Logic Gates With Amplification - One of the hardest things about studying electricity, and by extension electronics... - https://hackaday.com/2024/09/20/mechanical-logic-gates-with-amplification/ #digitallogic #electronics #leverlogic #mechanical #amplifier #logicgate #teaching #science #analogy #capstan #analog #pulley

Computing Via (Virtual) Dominos https://hackaday.com/2024/04/18/computing-via-virtual-dominos/ #digitallogic #MiscHacks #dominos

Computing Via (Virtual) Dominos - Back in 2012, [Matt Parker] and a team built a computer out of dominos for the Man... - https://hackaday.com/2024/04/18/computing-via-virtual-dominos/ #digitallogic #mischacks #dominos

Patching Together Logic Gates - The digital world offers many advantages over its analog relatives, the use of boo... - https://hackaday.com/2023/08/25/patching-together-logic-gates/ #microcontrollers #microcontroller #digitallogic #teachingtool #educational #atmega4809 #logicgate #logic

Patching Together Logic Gates - The digital world offers many advantages over its analog relatives, the use of boo... - https://hackaday.com/2023/08/25/patching-together-logic-gates/ #microcontrollers #microcontroller #digitallogic #teachingtool #educational #atmega4809 #logicgate #logic

Patching Together Logic Gates - The digital world offers many advantages over its analog relatives, the use of boo... - https://hackaday.com/2023/08/25/patching-together-logic-gates/ #microcontrollers #microcontroller #digitallogic #teachingtool #educational #atmega4809 #logicgate #logic

Patching Together Logic Gates - The digital world offers many advantages over its analog relatives, the use of boo... - https://hackaday.com/2023/08/25/patching-together-logic-gates/ #microcontrollers #microcontroller #digitallogic #teachingtool #educational #atmega4809 #logicgate #logic

Patching Together Logic Gates - The digital world offers many advantages over its analog relatives, the use of boo... - https://hackaday.com/2023/08/25/patching-together-logic-gates/ #microcontrollers #microcontroller #digitallogic #teachingtool #educational #atmega4809 #logicgate #logic

@jangray can I trust Vivado to make a tight one-cell feedback loop for something like

reg q;
always @(*) if (a == b) q = a;

?

(this is Muller’s C-element AKA Karl Fant’s NCL TH22 threshold gate)

#FPGA #ASync #NCL #DigitalLogic

@reduz Alas “technical” covers cosmic areas, but I miss the usenet communities of yore, like comp.arch and comp.arch.fpga.

Always ready to discuss anything related to #microprocessorarchitecture, #microprocessorimplementation, #digitallogic, and especially “paths not followed”, like #asynclogic, #blockstructureISAs, etc

@reduz Alas “technical” covers cosmic areas, but I miss the usenet communities of yore, like comp.arch and comp.arch.fpga.

Always ready to discuss anything related to #microprocessorarchitecture, #microprocessorimplementation, #digitallogic, and especially “paths not followed”, like #asynclogic, #blockstructureISAs, etc

@reduz Alas “technical” covers cosmic areas, but I miss the usenet communities of yore, like comp.arch and comp.arch.fpga.

Always ready to discuss anything related to #microprocessorarchitecture, #microprocessorimplementation, #digitallogic, and especially “paths not followed”, like #asynclogic, #blockstructureISAs, etc

@reduz Alas “technical” covers cosmic areas, but I miss the usenet communities of yore, like comp.arch and comp.arch.fpga.

Always ready to discuss anything related to #microprocessorarchitecture, #microprocessorimplementation, #digitallogic, and especially “paths not followed”, like #asynclogic, #blockstructureISAs, etc

@reduz Alas “technical” covers cosmic areas, but I miss the usenet communities of yore, like comp.arch and comp.arch.fpga.

Always ready to discuss anything related to #microprocessorarchitecture, #microprocessorimplementation, #digitallogic, and especially “paths not followed”, like #asynclogic, #blockstructureISAs, etc

Finally took the time to watch the talk by Lee Boysel (RIP): https://youtu.be/UpHN0kpukRc - super interesting. He's not as famous as he deserves to be, but he really did create the first microprocessor on a chip and many other things (see, eg. https://www.cpushack.com/2014/08/15/four-phase-systems-al1-processor-8-bits-by-lee-boysel/)

I've always been particularly interested in four-phase logic as it's extremely dense.
KW: #microprocessor #processor #DigitalLogic #FourPhaseLogic #VLSI #Architecture

Scott’s CPU From the Bottom Up - It isn’t for everyone, but if you work much with computers at a low level, you’ll ... - https://hackaday.com/2022/05/19/scotts-cpu-from-the-bottom-up/ #microcontrollers #digitallogic #customcpu #cpu

Al Williams Tells All in the Logic Simulation Hack Chat - The list of requirements for hosting one of our weekly Hack Chats is pretty short:... - https://hackaday.com/2022/03/04/al-williams-tells-all-in-the-logic-simulation-hack-chat/ #circuitsimulation #hackadaycolumns #digitallogic #hackchat #verilog #asic #fpga #hdl

A PNG Based Circuit Simulator - We’re sure thousands of hours have been spent in Minecraft implementing digital lo... - https://hackaday.com/2022/02/16/a-png-based-circuit-simulator/ #softwarehacks #digitallogic #simulation #simulator #python

TTL Simulator in JavaScript - How do you celebrate your YouTube channel passing the 7400 subscriber mark? If you are [Low Level ... - https://hackaday.com/2020/11/02/ttl-simulator-in-javascript/ #logicsimulator #softwarehacks #digitallogic #logic #ttl