

Brewer
Rpo for pcb layouts, gerber and gcode files
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 39
- Pads
- 110
- Tracks, vias
- 183, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 18 Jun 2018
- Updated
- 30 Aug 2022
Overview
Brewer is an open-source printed circuit board by androiders, from the androiders/pcbs repository on GitHub. It is a 2-layer board with 33 parts on 39 nets, routed with 183 tracks and 4 vias.
It is built around the LM7805CT and IRF540N. Its parts include 14 connectors, 4 capacitors, 2 ICs, 2 crystals and 1 resistor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2LM7805CT
TO-2200℃~+70℃@(Ta) 1 1A 20V 2V@(1A) 40uV 5V 62dB@(120Hz) 8mA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsIRF540N
TO-2201 N-channel 1.35nF 100V 130W 280pF 33A 35mΩ@10V 4V 52nC@10V 85pF N-Channel TO-220 MOSFETs ROHSOSENMOSFETs
README
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
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 15pF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C1, C2, C3, C4 |
| 1 | 10k | Resistors_ThroughHole:Resistor_Horizontal_RM7mm | R1 |
| 1 | 12v input | Terminal_Blocks:TerminalBlock_Pheonix_MPT-2.54mm_2pol | P4 |
| 1 | 32768Hz | Crystals:Crystal_Round_Horizontal_2mm | Y2 |
| 1 | 8MHz | Crystals:Crystal_HC49-U_Vertical | Y1 |
| 1 | ATMEGA16-P | Housings_DIP:DIP-40_W15.24mm_LongPads | IC1 |
| 1 | D | Resistors_ThroughHole:Resistor_Horizontal_RM7mm | D1 |
| 1 | GND | Pin_Headers:Pin_Header_Straight_1x01 | P8 |
| 1 | IRF540N | Power_Integrations:TO-220 | Q1 |
| 1 | LM7805CT | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | U1 |
| 1 | MISO | Pin_Headers:Pin_Header_Straight_1x01 | P11 |
| 1 | MOSI | Pin_Headers:Pin_Header_Straight_1x01 | P10 |
| 1 | Motor out | Terminal_Blocks:TerminalBlock_Pheonix_MPT-2.54mm_2pol | P14 |
| 1 | PA0-7 | Pin_Headers:Pin_Header_Straight_1x08 | P3 |
| 1 | PB0-7 | Pin_Headers:Pin_Header_Straight_1x08 | P5 |
| 1 | PC0-5 | Pin_Headers:Pin_Header_Straight_1x06 | P6 |
| 1 | PD2-6 | Pin_Headers:Pin_Header_Straight_1x05 | P1 |
| 1 | PD7 | Pin_Headers:Pin_Header_Straight_1x01 | P2 |
| 1 | RST | Pin_Headers:Pin_Header_Straight_1x01 | P9 |
| 1 | Reset | Buttons_Switches_SMD:SW_SPST_EVQPE1 | SW1 |
| 1 | SCK | Pin_Headers:Pin_Header_Straight_1x01 | P12 |
| 1 | VCC | Pin_Headers:Pin_Header_Straight_1x01 | P7 |
| 1 | uart | Pin_Headers:Pin_Header_Straight_1x04 | P13 |
The 26 most common of 33 parts.
Questions
What parts does the Brewer use?
33 parts, built around the LM7805CT and IRF540N. 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 Brewer KiCad files?
From the androiders/pcbs repository on GitHub, at the commit this page was made from: the board is brewer/brewer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Brewer 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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