2 layers217.2 × 109.2 mm
MainBoard Rev1
jayvalentine/modular-z80
Schematics and documentation for my modular Z80 machine, inspired by RC2014
32 partsGPL-3.0
2 layers50.8 × 104.1 mm
Timer RTC
jayvalentine/modular-z80Schematics and documentation for my modular Z80 machine, inspired by RC2014
- Size
- 50.8 × 104.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 72
- Pads
- 169
- Tracks, vias
- 394, 34
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 18 Nov 2020
- Updated
- 24 Sep 2023
Overview
Timer RTC is an open-source printed circuit board by jayvalentine, from the jayvalentine/modular-z80 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 50.8 × 104.1 mm with 20 parts on 72 nets, routed with 394 tracks and 34 vias.
It is built around the 74LS04PC and 74LS32SC. Its parts include 5 connectors, 4 resistors, 4 ICs, 4 diodes and 1 switch. It belongs with the retro computing and games boards of this library.
Main components
2README
README.mdModular Z80
This repository contains schematics, PCB layouts, and documentation for my modular Z80 computer. All schematics and layouts are done using Kicad.
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R6, R7 |
| 4 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4 |
| 2 | Conn_01x03_Male | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J2, J5 |
| 2 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J3, J4 |
| 1 | 10k | Resistor_THT:R_Array_SIP7 | RN1 |
| 1 | 10k | Resistor_THT:R_Array_SIP4 | RN2 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U1 |
| 1 | 74LS32 | Package_DIP:DIP-14_W7.62mm | U2 |
| 1 | 74LS688 | Package_DIP:DIP-20_W7.62mm | U4 |
| 1 | 8254 | Package_DIP:DIP-24_W15.24mm_Socket | U3 |
| 1 | Bus_Wide | Connector_PinHeader_2.54mm:PinHeader_1x40_P2.54mm_Vertical | J1 |
| 1 | SW_DIP_x06 | Button_Switch_THT:SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | SW1 |
Questions
How big is the Timer RTC PCB?
It measures 50.8 × 104.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Timer RTC use?
20 parts, built around the 74LS04PC 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 Timer RTC KiCad files?
From the jayvalentine/modular-z80 repository on GitHub, at the commit this page was made from: the board is Timer_RTC/Timer_RTC.kicad_pcb and its schematic Banked_RAM_Higher/Banked_RAM_Higher.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Timer RTC design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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