Dragon-32-Soak-Test-Cartridge
MyRetroStore·Dragon-32-Soak-Test-Cartridge·Hardware/Dragon 32 Soak Test Cartridge.kicad_pcb
About the Dragon-32-Soak-Test-Cartridge PCB
Dragon-32-Soak-Test-Cartridge is an open source PCB design by MyRetroStore, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 96.1 × 70 mm, with 24 components from 14 distinct parts.
Other key parts include the 74LS04, LM555xN, 27C64 and 74LS10. By type, the board carries 8 resistors, 5 ICs, 3 capacitors and 2 diodes.
From the project
Soak Test Cartridge for the Dragon 32 computer
A cartridge designed to test the Dragon 32 hardware in a loop. The ROM program will change a pattern on screen and lit a green led on the cartridge if tests are passing, and freeze the machine and lit a red led if any test fails. The cartridge will not work on a Dragon 64 or a Dragon 200 as it performs a ROM checksum and later models will make the checksum test fail.

Main components on the Dragon-32-Soak-Test-Cartridge
Dragon-32-Soak-Test-Cartridge bill of materials (BOM)
24 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS04 | DIP-14_W7.62mm | IC1 |
| 1 | LM555xN | DIP-8_W7.62mm | IC2 |
| 1 | 27C64 | DIP-28_W15.24mm | IC3 |
| 1 | 74LS10 | DIP-14_W7.62mm | IC4 |
| 1 | ~ | Dragon 32 | U2 |
| 4 | 100n | C_Disc_D5.0mm_W2.5mm_P5.00mm | DC1, DC2, DC3, DC4 |
| 2 | BC237 | TO-92 | TR1, TR2 |
| 1 | Red | LED_D5.0mm | D1 |
| 1 | Greem | LED_D5.0mm | D2 |
| 1 | 10u | CP_Radial_D5.0mm_P2.50mm | C1 |
| 2 | 10n | C_Disc_D5.0mm_W2.5mm_P5.00mm | C2, C3 |
| 6 | 3k3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R5, R6, R7, R8 |
| 1 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
Dragon-32-Soak-Test-Cartridge design files
The KiCad project lives in the MyRetroStore/Dragon-32-Soak-Test-Cartridge repository on GitHub; these links point at the commit this page was built from.
Dragon-32-Soak-Test-Cartridge: common questions
How big is the Dragon-32-Soak-Test-Cartridge PCB?
The Dragon-32-Soak-Test-Cartridge measures 96.1 × 70 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dragon-32-Soak-Test-Cartridge?
24 components, from 14 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 Dragon-32-Soak-Test-Cartridge design files?
From the MyRetroStore/Dragon-32-Soak-Test-Cartridge 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 Dragon-32-Soak-Test-Cartridge design in my own project?
Yes, under the terms of its GPL-3.0 license, which MyRetroStore chose for the repository.