QL QsoundQprint clone
About the QL QsoundQprint clone PCB
QL QsoundQprint clone is an open source PCB design by alvaroalea, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 99.1 × 99.1 mm, with 22 components from 16 distinct parts.
Other key parts include the 7805, 74LS10, 74LS266, W27C512 and 74LS03. By type, the board carries 7 ICs, 7 resistors, 4 capacitors, 3 connectors and 1 transistor.
From the project
A clone board of the Sound card for the Sinclair QL Computer.
I try to follow the original desing as much as possible, with some licenses:
- It's 10mm short, to fit in a 10x10cm, that is a lot cheaps if order PCB. - The 7805 regulator board and the output Jack was modify. - I use a electrolitic capacitor instead the original tantalo one. - There are some jumper to allow a future ACB stereo mix.
This project can not be possible without the help of silvester, that tracked a fault in the schematic and Marcel Kilgus that develop a new ROM with a qsound device and a pt3 player.
Main components on the QL QsoundQprint clone
QL QsoundQprint clone bill of materials (BOM)
22 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 7805 | TO-220-3_Horizontal_TabDown | U1 |
| 1 | 74LS10 | DIP-14_W7.62mm_LongPads | U2 |
| 1 | 74LS266 | DIP-14_W7.62mm_LongPads | U3 |
| 1 | W27C512 | DIP-28_W15.24mm_LongPads | U4 |
| 1 | 74LS03 | DIP-14_W7.62mm_LongPads | U5 |
| 1 | AY-3-8910 | DIP-40_W15.24mm_LongPads | U6 |
| 1 | 6821 | DIP-40_W15.24mm_LongPads | U7 |
| 1 | 2N2222A | TO-92_Inline | Q1 |
| 1 | QL_SLOT_DIN41612_CARD | DIN41612_B_2x32_Female_Horizontal_THT | J1 |
| 1 | Conn_02x17_Odd_Even | PinHeader_2x13_P2.54mm_Vertical | J2 |
| 1 | AudioJack2_Ground_Switch | AudioJack2_Ground_Switch | J3 |
| 3 | 100n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C2, C3, C5 |
| 1 | 100uF 16V | CP_Radial_D8.0mm_P5.00mm | C4 |
| 1 | 2k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 2 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R5 |
| 4 | 0 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4, R6, R7 |
QL QsoundQprint clone design files
The KiCad project lives in the alvaroalea/QL_QsoundQprint_clone repository on GitHub; these links point at the commit this page was built from.
- LayoutQL_Qsound10x10.kicad_pcb
- SchematicQL_Qsound10x10.kicad_sch
QL QsoundQprint clone: common questions
How big is the QL QsoundQprint clone PCB?
The QL QsoundQprint clone measures 99.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the QL QsoundQprint clone?
22 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the QL QsoundQprint clone design files?
From the alvaroalea/QL_QsoundQprint_clone repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the QL QsoundQprint clone design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which alvaroalea chose for the repository.