2 layers99.6 × 95 mm
MicroKit09 IO
electrickery/MicroKit09MK2
A recreation of an MC6809 Single Board Computer from the 1980's
77 parts1
2 layers98.9 × 91.4 mm
MicroKit09
electrickery/MicroKit09MK21A recreation of an MC6809 Single Board Computer from the 1980's
- Size
- 98.9 × 91.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 86
- Pads
- 295
- Tracks, vias
- 1,376, 158
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Apr 2021
- Updated
- 4 Sep 2025
Overview
MicroKit09 is an open-source printed circuit board by electrickery, from the electrickery/MicroKit09MK2 repository on GitHub. It is a 2-layer board of 98.9 × 91.4 mm with 34 parts on 86 nets, routed with 1,376 tracks and 158 vias.
Its parts include 12 capacitors, 7 ICs, 6 connectors, 5 resistors and 2 diodes. It belongs with the computers and single-board computers boards of this library.
README
README.mdDescription
In several 1983 editions of the French computer magazine 'Led' an MC6809 single board computer was published, supporting a 6-digit, 7-segment Led display and 34 keys. The original has a 2 kByte monitor ROM and 2 kByte RAM.
Most published material can be found here: https://lab.nethence.com/frederic/Microit09/
This is a recreation, with a smaller footprint and some room for expansion.
The original, published monitor version is 1.8. This repository contains my minor enhancements.
My webpage on the subject can be found here: http://electrickery.nl/comp/microKit09/
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C2, C3, C4, C5, C6, C7, C12 |
| 3 | 3k3 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4 |
| 2 | 22pF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C10, C11 |
| 2 | 74LS138 | Package_DIP:DIP-16_W7.62mm_Socket | U3, U4 |
| 1 | 100uF/25V | Capacitor_THT:CP_Radial_Tantal_D6.0mm_P5.00mm | C9 |
| 1 | 10uF/16V | Capacitor_THT:CP_Radial_Tantal_D6.0mm_P5.00mm | C8 |
| 1 | 22uF | Capacitor_THT:CP_Radial_Tantal_D6.0mm_P2.50mm | C1 |
| 1 | 2732_alt | Package_DIP:DIP-24_W15.24mm_Socket | U7 |
| 1 | 2k/4k | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | 2k/8k | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 4MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 5k6 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 6264_alt | Package_DIP:DIP-28_W15.24mm_Socket | U2 |
| 1 | 6821 | Package_DIP:DIP-40_W15.24mm_Socket | U1 |
| 1 | D_Schottky_Small | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | ExtensionConnector | MicroKit09:PinHeader_2x20_P2.54mm_Vertical_CC | J2 |
| 1 | Green | LED_THT:LED_D3.0mm | D2 |
| 1 | I/O-board | Connector_PinHeader_2.54mm:PinHeader_2x17_P2.54mm_Vertical | J1 |
| 1 | LED enable | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U8 |
| 1 | MC6809 | Package_DIP:DIP-40_W15.24mm_Socket | U6 |
| 1 | Power | MicroKit09:Barrel_Jack_vertical_alt | J5 |
| 1 | Reset | Button_Switch_THT:SW_DIP_SPSTx01_Piano_10.8x4.1mm_W7.62mm_P2.54mm | SW1 |
Questions
How big is the MicroKit09 PCB?
It measures 98.9 × 91.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MicroKit09 use?
34 parts. 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 MicroKit09 KiCad files?
From the electrickery/MicroKit09MK2 repository on GitHub, at the commit this page was made from: the board is PCBs/MicroKit09/MicroKit09.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MicroKit09 design in my own project?
Its repository states no licence, so its author keeps all rights: ask electrickery before reusing the design.
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