2 layers37.8 × 36.8 mm
Parallel port audio and joystick adapter
roybaer/parallel_port_audio_and_joystick_adapter
Parallel port audio and joystick adapter (FTL Sound Adapter replica)
7 parts3
2 layers36.8 × 39.4 mm
Generic 8 bit audio dac
roybaer/generic_8_bit_audio_dac6Covox Speech Thing compatible parallel port audio DAC
- Size
- 36.8 × 39.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 26
- Pads
- 66
- Tracks, vias
- 175, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 1 Oct 2019
- Updated
- 1 Oct 2019
Overview
Generic 8 bit audio dac is an open-source printed circuit board by roybaer, from the roybaer/generic_8_bit_audio_dac repository on GitHub. It is a 2-layer board of 36.8 × 39.4 mm with 7 parts on 26 nets, routed with 175 tracks and 0 vias.
It is built around the 4310R-R2R-104LF. Its parts include 3 connectors, 1 capacitor, 1 resistor and 1 switch. It belongs with the audio and music and retro computing and games boards of this library.
Main components
1README
README.mdGeneric 8 bit audio DAC
These are KiCAD and Inkscape design files for a generic Covox Speech Thing compatible parallel port audio DAC.
This particular design uses a 100kΩ SIP R2R DAC with a 25.5kΩ load resistor and a pass-through connector for a printer and is therefore significantly closer to the original than most other imitations.
Photo
License
This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | Pad | Connector_Wire:SolderWirePad_1x01_Drill1.2mm | J1, J2 |
| 1 | 0 | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1 |
| 1 | 25.5k | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P20.32mm_Horizontal | R1 |
| 1 | 4310R-R2R-104LF | Resistor_THT:R_Array_SIP10 | RN1 |
| 1 | DB25_Female | Connector_Dsub:DSUB-25_Female_EdgeMount_P2.77mm | S1 |
| 1 | DB25_Male | Connector_Dsub:DSUB-25_Male_EdgeMount_P2.77mm | P1 |
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Questions
How big is the Generic 8 bit audio dac PCB?
It measures 36.8 × 39.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Generic 8 bit audio dac use?
7 parts, built around the 4310R-R2R-104LF. 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 Generic 8 bit audio dac KiCad files?
From the roybaer/generic_8_bit_audio_dac repository on GitHub, at the commit this page was made from: the board is generic_8_bit_audio_dac/generic_8_bit_audio_dac.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Generic 8 bit audio dac design in my own project?
Its repository states no licence, so its author keeps all rights: ask roybaer before reusing the design.