2 layers160 × 115 mm
Hobgoblin v1
iley/hobgoblin
Single-board 8-bit computer capable of running CP/M. Inspired by RC2014 and computers by Grant Searle and Sergey Kiselev.
55 parts
2 layers150 × 110 mm
Hobgoblin v2
iley/hobgoblinSingle-board 8-bit computer capable of running CP/M. Inspired by RC2014 and computers by Grant Searle and Sergey Kiselev.
- Size
- 150 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 119
- Pads
- 480
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Nov 2020
- Updated
- 18 Jun 2026
Overview
Hobgoblin v2 is an open-source printed circuit board by iley, from the iley/hobgoblin repository on GitHub. It is a 2-layer board of 150 × 110 mm with 56 parts on 119 nets.
It is built around the FT232RL, 74HCT00D and 74LS14PC, with the 74LS32SC among its other parts. Its parts include 16 capacitors, 12 resistors, 10 ICs, 5 connectors and 3 diodes. It belongs with the FPGA and CPLD boards of this library.
Main components
4
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
74HCT00D
SO-14-40℃~+125℃ 100mV、400mV 12ns@4.5V,50pF 2 2V 3.7V、4.4V 4 4.5V~5.5V 40uA 4mA 4mA 74HCT Series 800mV NAND Gate Overvoltage-tolerant input TTL Compatible CMOS SO-14 Logic Gates ROHSNexperiaLogic Gates
74LS14PC
PDIP-14InvertersTexas Instruments
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates
README
README.mdHobgoblin: Z80-based single-board computer
Single-board 8-bit computer capable of running CP/M. Inspired by RC2014 and computers by Grant Searle and Sergey Kiselev.
Usage
Easiest way of using the computer is to connect it to a modern PC via the built-in USB-serial at 115200 baud.
Specs
- Z80 CPU running at 10MHz
- 64 KiB RAM
- 8 x 16 KiB ROM. ROM bank is selectable with a DIP switch
- ROM can be paged out for CP/M compatibility
- Built-in usb-to-serial adapter for convenience of use with modern computers
- 2 RC2014-compatible extension slots (see https://rc2014.co.uk/)
Memory map
FFFF ┌─────────┐
│ │
│ │
│ │
│ │
│ RAM │
│ │
│ │
│ │
4000 ├─────────┤
│ │
│ ROM │
│ │
0000 └─────────┘Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 0.1uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C15, C16 |
| 6 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R8, R9, R10, R11, R12 |
| 4 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R5, R6 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C1, C14 |
| 1 | 10 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 10MHz | Oscillator:Oscillator_DIP-8 | X1 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 3K3 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 5V | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | 628128 | Package_DIP:DIP-32_W15.24mm_LongPads | U6 |
| 1 | 7.3728MHz | Oscillator:Oscillator_DIP-8 | X2 |
| 1 | 74HCT00 | Package_DIP:DIP-14_W7.62mm_LongPads | U7 |
| 1 | 74LS14 | Package_DIP:DIP-14_W7.62mm_LongPads | U2 |
| 1 | 74LS32 | Package_DIP:DIP-14_W7.62mm_LongPads | U1 |
| 1 | CF_BUSY | LED_THT:LED_D3.0mm | D3 |
| 1 | CompactFlash | hobgoblin:CF-Card_3M_N7E507516PK20 | CF1 |
| 1 | FT232RL | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U5 |
| 1 | GAL16V8/IO | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U4 |
| 1 | GAL16V8/MEM | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U9 |
| 1 | MC68B50 | Package_DIP:DIP-24_W15.24mm_Socket_LongPads | U10 |
| 1 | MINIUSB | Connector_USB:USB_Mini-B_Lumberg_2486_01_Horizontal | J4 |
| 1 | ON | LED_THT:LED_D3.0mm | D2 |
| 1 | RC2014EXT1 | hobgoblin:RC2014_Connector | J2 |
| 1 | RC2014EXT2 | hobgoblin:RC2014_Connector | J3 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | ROMBNK | Button_Switch_THT:SW_DIP_SPSTx03_Slide_6.7x9.18mm_W7.62mm_P2.54mm_LowProfile | SW2 |
| 1 | SST39SF010 | Package_DIP:DIP-32_W15.24mm_Socket_LongPads | U8 |
| 1 | USBUART | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J5 |
| 1 | USB_VCC | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | JP1 |
| 1 | Z80CPU | Package_DIP:DIP-40_W15.24mm_Socket_LongPads | U3 |
| 1 | hole1 | MountingHole:MountingHole_3.2mm_M3 | H1 |
| 1 | hole2 | MountingHole:MountingHole_3.2mm_M3 | H2 |
| 1 | hole3 | MountingHole:MountingHole_3.2mm_M3 | H3 |
| 1 | hole4 | MountingHole:MountingHole_3.2mm_M3 | H4 |
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Questions
How big is the Hobgoblin v2 PCB?
It measures 150 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hobgoblin v2 use?
56 parts, built around the FT232RL, 74HCT00D, 74LS14PC and 74LS32SC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hobgoblin v2 KiCad files?
From the iley/hobgoblin repository on GitHub, at the commit this page was made from: the board is pcb/v2/hobgoblin_v2.kicad_pcb and its schematic pcb/v1/USB_UART.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hobgoblin v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask iley before reusing the design.