Mistrum Home Computer Modulator
About the Mistrum Home Computer Modulator PCB
Mistrum Home Computer Modulator is an open source PCB design by Lazarus-L-o-n-g, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 78 × 94 mm, with 43 components from 39 distinct parts.
By type, the board carries 16 capacitors, 14 resistors, 3 diodes, 2 connectors, 1 crystal and 1 relay.
It belongs with the keyboards designs in this gallery.
From the project
All schematics and PCBs are made using KiCad.
All schematics and PCBs are made using KiCad.
The newly designed extended Cherry MX Keyboard features: - Mechanical Cherry MX switches - ZX Spectrum compatibility - Optional bus or external power supply (external is deafult for Mistrum) - Extended to separate cursors keys, delete key and special Mistrum keys (key Mistrum, NMI and RESET), realized as logic switches - Two LED indicators, optional (for example BOOT, DRIVE) - Two PCBs - main board and mask - Identical size and mounting holes as PMD-85 coputer keyboard
Mistrum Home Computer Modulator bill of materials (BOM)
43 components, 39 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4,43MHz | C2 | X1 |
| 1 | CONN_1 | Pin_D0.7mm_L6.5mm_W1.8mm_FlatFork | P1 |
| 1 | CONN_1 | 1pin | P2 |
| 1 | LM1886 | DIP-20__300_ELL | IO1 |
| 1 | LM1889 | DIP-18__300_ELL | IO2 |
| 1 | CONN_20 | TY5112011 | K1 |
| 1 | SWITCH_INV | PIN_ARRAY_3X1 | PR1 |
| 1 | KC509 | TO-92_Wide | T1 |
| 1 | 470R | CA6V | TR1 |
| 3 | KA206 | D3 | D1, D2, D3 |
| 1 | INDUCTOR | R4 | L1 |
| 1 | 50uF | C2V8 | C1 |
| 2 | 100n | C2 | C2, C11 |
| 1 | 100n | C3 | C3 |
| 1 | 100p | CP4 | C4 |
| 1 | 100p | CP5 | C5 |
| 2 | 60p | WN70419 | C6, C12 |
| 1 | 36p | C1 | C7 |
| 1 | 36p | C2 | C8 |
| 1 | 10n | C3 | C9 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 47uF | C1V5 | C10 |
| 1 | 10uF | C1 | C13 |
| 1 | 10n | C2 | C14 |
| 1 | 1n | C1 | C15 |
| 1 | 47uF | CP7 | C16 |
| 1 | 4k7 | R7 | R1 |
| 1 | 5k6 | R2 | R2 |
| 1 | 2k2 | R2 | R3 |
| 1 | 100k | R4 | R4 |
| 1 | 4k7 | R4 | R5 |
| 1 | 1k | R3 | R6 |
| 1 | 1k | R4 | R7 |
| 1 | 3k3 | R4 | R8 |
| 1 | 1k8 | R4 | R9 |
| 1 | 820R | R4 | R10 |
| 1 | 270R | R4 | R11 |
| 1 | 270R | R3 | R12 |
| 1 | 82R | R2 | R13 |
| 1 | 2R2 | R6 | R14 |
Mistrum Home Computer Modulator design files
The KiCad project lives in the Lazarus-L-o-n-g/Mistrum repository on GitHub; these links point at the commit this page was built from.
Mistrum Home Computer Modulator: common questions
How big is the Mistrum Home Computer Modulator PCB?
The Mistrum Home Computer Modulator measures 78 × 94 mm, has 2 copper layers and is 1.6002 mm thick.
How many components are on the Mistrum Home Computer Modulator?
43 components, from 39 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Mistrum Home Computer Modulator design files?
From the Lazarus-L-o-n-g/Mistrum repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Mistrum Home Computer Modulator design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
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