Some of my designs are available to purchase as kits. These include Z80 computer kits, Z180 computer kits, and modules for RCBus and Z50Bus. Unless otherwise stated, everything is included, except tools, solder, batteries, and cleaning materials.
Some components, spares, and accessories are available here, including programmed ROMs.

Standalone systems
These kits do not have external expansion buses.
Kits designed for RCBus
The RCBus is an extended RC2014 bus able to support a range of processors and advanced features. The RCBus specification includes the RC2014 standards as a sub-set. This sub-set is known as the RCBus-2014 specification.
The SC600 series (40-pin) and SC700 series (80-pin) modules are styled to match the RCBus 1.0 module recommendations, while SC100 series modules are styled to match the RC2014 recommendations. Styling is just the appearance, not an indication of incompatibility.
Modules with 40-pin bus connectors work on 60-pin and 80-pin backplanes. Most modules with more bus connector pins than the backplane connector they are fitted to usually work but often have some limitations.
- RCBus-2014, standard bus, 40 pins
- SC600 series
- SBCs and motherboards
- Complete modular systems
- Backplanes
- Modules (RCBus 1.0 style, standard profile)
- SC601 – Z80 CPU Module
- SC602 – Memory Module, 512k
- SC603 – Serial Module, Z80 SIO/2
- SC604 – Compact Flash Module
- SC605 – Digital I/O Module
- SC606 – Real Time Clock Module
- SC607 – Prototyping Module
- SC608 – I2C Bus Master Module
- SC609 – Servo Control Module
- SC610 – Serial Module, ACIA
- SC611 – Micro SD Module
- SC612 – Serial Module, ACIA
- SC613 – Compact Flash Module
- SC614 – Power Supply Module, 8-15 volt input
- Modules (RC2014 style, low profile)
- SC134 – LED Output Module
- SC135 – Digital Output Module
- SC136 – Digital Input Module
- SC137 – I2C Bus Master Module
- SC139 – Serial 68B50 ACIA Module
- SC142 – Power Supply Module
- SC143 – ROM Module
- SC145 – Compact Flash Module
- SC148 – Power Supply Module
- SC149 – Z80 CPU Module
- SC150 – Paged RAM Module
- SC151 – Paged ROM module
- RCBus-2014, enhanced bus, 60 pins
- RCBus, extended bus, 80-pins
- SC700 series
- SBCs and motherboards
- Complete modular systems
- Backplanes
- Modules (RCBus 1.0 style, standard profile)
- SC703 – Power Supply Module, 8-15 volt input
- SC704 – I2C Bus Master Module
- SC705 – Serial ACIA Module
- SC706 – Z80 CPU Module
- SC707 – Z80 Memory Module, 128k
- SC708 – Z80 SBC Module
- SC711 – Prototyping Module (large profile)
- SC712 – Power Supply Module, 5 volt input
- SC714 – Z80 Memory Module, 512k
- SC715 – Compact Flash Module
- SC716 – Z80 SIO/2 Module
- SC717 – Z80 PIO Module
- SC718 – Z80 CTC Module
- SC719 – Digital I/O Module
- SC721 – 1MB Linear Memory Module
- SC722 – Z180 CPU Module
- SC724 – Breakout Prototyping Module (large profile)
- SC725 – Z80 SIO and Z80 CTC Module
- SC726 – Clock Oscillator Module
- SC727 – Real Time Clock Module
- SC728 – Module Riser
- SC729 – Compact Flash Module
- SC730 – Z80 CPU plus MMU
- SC731 – Dual Channel PWM Module
- SC732 – Dual Channel Servo Module
- SC733 – Prototyping Module
- SC734 – Micro SD Module
Kits designed for Z50Bus
These kits are compliant with the Z50Bus specification.
- Z50Bus, 50-pin
- SC500 series
- Backplanes (standard)
- Backplanes (modular)
- Cards
- SC502 – Power supply and reset card, 8 to 15-volt input
- SC503 – Z180 processor card with serial and SPI (SD card)
- SC504 – Compact flash storage card
- SC505 – Real-time clock and I2C bus master
- SC506 – Digital I/O card
- SC509 – Z80 PIO (Parallel I/O) card
- SC510 – Prototyping card
- SC511 – Serial (SIO) and timer (CTC) card
- SC512 – Prototyping breakout card
- SC514 – Z80 CTC (Counter/Timer) card
- SC516 – Z80 Processor card (CPU, RAM, ROM)
- SC518 – Z80 CPU card
- SC519 – Z80 memory card
- SC520 – Serial ACIA (68B50) card
- SC521 – Z80 SIO/2 (Serial I/O) card
- SC523 – Programmable ‘ROM’ card
- SC526 – Power supply and reset card, 5-volt input
- SC527 – Z80 Processor card
Kits designed for I2C Bus
I2C is an industry standard bus system.
- I2C Bus (5 volt, 4-pin bus)
- SC138 – I2C Memory Card
- SC400 – I2C Bus Modules
- SC401 – I2C Prototyping Module
- SC402 – I2C Memory Module (24xxxx)
- SC403 – I2C 16-bit Digital I/O Module (MCP23018)
- SC404 – I2C 8-bit Digital I/O Module (MCP23008)
- SC405 – I2C 8-bit Digital I/O Module (PCF8574)
- SC406 – I2C Temperature Sensor Module (TC74)
- SC407 – I2C Switches and Lights Module (PCF8574)