VIDEO
About the VIDEO PCB
VIDEO is an open source PCB design by lkesteloot, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 64.8 × 78.7 mm, with 17 components from 14 distinct parts.
Other key parts include the Propeller_P8X32A-D40, VGA_daughter_board, 24LC256, Propeller_Plug and LM2937-3.3. By type, the board carries 8 ICs, 4 resistors, 2 diodes, 1 crystal, 1 switch and 1 capacitor.
From the project
Website documenting a hardware project from the 1990s.
This is the third model of the Alice machine. It runs a silicon Z80 with two co-processors: an ARM for keyboard, disk, and serial port, and a Propeller for video.
The 80MHz Propeller has 48K of internal RAM, drives VGA and the 5-pin Aux connector (intended for audio but wired generically to 3 Propeller pins) and thus provides opportunities for video and other experimentation.
Main components on the VIDEO
VIDEO bill of materials (BOM)
17 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Propeller_P8X32A-D40 | DIP-40_W25.4mm | U1 |
| 1 | VGA_daughter_board | Pin_Header_Straight_1x08 | U2 |
| 1 | 24LC256 | DIP-8_W7.62mm | U3 |
| 1 | Propeller_Plug | Pin_Header_Straight_1x04 | U4 |
| 1 | LM2937-3.3 | TO-220 | U5 |
| 2 | 74HC4050 | DIP-16_W7.62mm | U6, U7 |
| 1 | Alice_3_bus | Pin_Header_Straight_2x10 | U8 |
| 1 | 5 MHz | Crystal_HC48-U_Vertical | Y1 |
| 1 | RESET | SW_PUSH_SMALL | SW1 |
| 1 | POWER | LED-5MM | D1 |
| 1 | DEBUG | LED-5MM | D2 |
| 1 | 1000 µF | C_Radial_D5_L6_P2.5 | C1 |
| 2 | 10K | Resistor_Horizontal_RM10mm | R1, R2 |
| 2 | 100 | Resistor_Horizontal_RM10mm | R3, R4 |
VIDEO design files
The KiCad project lives in the lkesteloot/alice repository on GitHub; these links point at the commit this page was built from.
VIDEO: common questions
How big is the VIDEO PCB?
The VIDEO measures 64.8 × 78.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the VIDEO?
17 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the VIDEO design files?
From the lkesteloot/alice repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the VIDEO design in my own project?
Yes, under the terms of its Apache-2.0 license, which lkesteloot chose for the repository.
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