2 layers58 × 80 mm
2 layers
Signalbuffer single
androiders/pcbsRpo for pcb layouts, gerber and gcode files
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 12
- Pads
- 27
- Tracks, vias
- 50, 0
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 18 Jun 2018
- Updated
- 30 Aug 2022
Overview
Signalbuffer single is an open-source printed circuit board by androiders, from the androiders/pcbs repository on GitHub. It is a 2-layer board with 14 parts on 12 nets, routed with 50 tracks and 0 vias.
It is built around the LM318N. Its parts include 7 connectors, 4 resistors, 2 capacitors and 1 IC.
Main components
1README
README.mdView this project on CADLAB.io.
pcbs
Repo for pcb layouts, gerber and gcode files
Ki-Cad
PCB layout:
- Use as wide traces as possible. 1mm preffered.
- Dont use "filled areas" if possible. It does not make good geometry in flatcam
- Don't forget to set origin marker
- Export gerber: use auxiliary axis
FlatCam
geometry generation:
- If you are using thru-hole components or using bottom layer, mirror around y axis for both geometry and Drilling
- Edit drill files if necessary for fewer drill sizes
- TODO: test double sided layout by mirroring around center axis!
Isolation generation:
-
Current isolation mill depth to test: 0.04 mm (0.05 was tested and seems to work fine!) (Common copper depth is about 0.03 mm)
-
Current feedrate on isolation milling to test: 60 mm/s
-
spindle speed 12000 rpm
-
use 0.2 mm tool width on cnc generation
-
2 passes with 0.1 overlap
Cutout generation:
- Current cutout mill depth: 1.6 mm
- Current feedrate on cutout milling: 40 mm/s
- spindle speed 12000 rpm
FlatCam defaults:
- put a link in ~/.FlatCAM/defaults.json
bCNC
Probe:
- Fastfeed: 120
- Probefeed: 25
- Probe points: 4/cm (in each direction)
Drilling:
- Current drill plunge rate to test 20 mm/s
- spindle speed: 12000 rpm
- Drill depth: 1.6
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | R | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R3, R4, R7, R9 |
| 1 | 47uF | Capacitors_THT:CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | Bias In | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J7 |
| 1 | C_Small | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C1 |
| 1 | GND in | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J1 |
| 1 | LM318N | Housings_DIP:DIP-8_W7.62mm | U1 |
| 1 | Signal In | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J6 |
| 1 | Signal gnd | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J4 |
| 1 | Signal out | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J9 |
| 1 | VDD in | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J2 |
| 1 | VSS in | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | J3 |
Questions
What parts does the Signalbuffer single use?
14 parts, built around the LM318N. 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 Signalbuffer single KiCad files?
From the androiders/pcbs repository on GitHub, at the commit this page was made from: the board is signalbuffer_single/signalbuffer_single.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Signalbuffer single design in my own project?
Its repository states no licence, so its author keeps all rights: ask androiders before reusing the design.
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