2 layers

Smps

Rpo for pcb layouts, gerber and gcode files

Copper layers: 2
Thickness: 1.6 mm
Parts: 18
Nets: 12
Pads: 48
Tracks, vias: 270, 0
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 18 Jun 2018
Updated: 30 Aug 2022

Overview

Smps is an open-source printed circuit board by androiders, from the androiders/pcbs repository on GitHub. It is a 2-layer board with 18 parts on 12 nets, routed with 270 tracks and 0 vias.

It is built around the LM2576HVT-ADJ and LM358. Its parts include 5 resistors, 3 connectors, 2 capacitors, 2 ICs and 1 diode.

Main components

README

README.md

View 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

Qty	Value	Footprint	References
4	R	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R3, R4, R5
2	R_Potentiometer_Small	Potentiometer_THT:Potentiometer_ACP_CA9-H3,8_Horizontal	RV2, RV3
1	0.1 10w	Resistor_THT:R_Axial_Power_L20.0mm_W6.4mm_P25.40mm	Rshunt1
1	1.2K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1
1	1000uF	Capacitor_THT:CP_Radial_D10.0mm_P7.50mm	C7
1	100uH	Inductor_THT:L_Toroid_Vertical_L31.8mm_W15.9mm_P13.50mm_Bourns_5700	L1
1	100uf	Capacitor_THT:CP_Radial_D10.0mm_P7.50mm	C1
1	1N5822	Diode_THT:D_DO-201AD_P12.70mm_Horizontal	D3
1	50K	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal	RV1
1	I sense out	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J5
1	LM2576HVT-ADJ	Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical	U1
1	LM358	Package_DIP:DIP-8_W7.62mm_Socket	U2
1	V in	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J1
1	V out	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal	J4

Questions

What parts does the Smps use?

18 parts, built around the LM2576HVT-ADJ and LM358. 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 Smps KiCad files?

From the androiders/pcbs repository on GitHub, at the commit this page was made from: the board is smps/smps.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Smps design in my own project?

Its repository states no licence, so its author keeps all rights: ask androiders before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/androiders-pcbs-smps" title="Smps in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/androiders-pcbs-smps.jpg" alt="Smps" width="1200" height="900">

A picture that opens the board, for a README

[![Smps](https://pcbkit.io/embed/boards/androiders-pcbs-smps.jpg?size=s)](https://pcbkit.io/boards/androiders-pcbs-smps)

Source

Repository: androiders/pcbs
Board file: smps/smps.kicad_pcb
Commit: 6aef352
Licence: Not stated

Similar boards

2 layers
Communication brain
crodar33/CommandPoint
ESP8266, Daly smart bms, HYD6000-ES
24 parts2Apache-2.0
2 layers90.2 × 44.4 mm
Energieplatine
entwickler-brandenburg/Tutorprojekt_Energieplatine

41 parts
2 layers51.8 × 34 mm
BikeLite
francesmatthew/BikeLite
This is the schematic and PCB for a buck converter and 555 timer to add flashing LEDs to my bike
23 parts
2 layers114.3 × 104.1 mm
Final circuit pcb file
Mahaveer2041/PCB-Project-
Zine MCU/PCB Project 2023
24 parts
4 layers245.1 × 108 mm
Sl8500 retrofit electronics
saitis-net/sl8500_retrofit_electronics
Kicad projects for the hardware parts
93 partsGPL-3.0
2 layers80.7 × 25 mm
RePower
Vihaan6119/RePower
it takes power from a wall adapter via usb-c/dc input and uses a through-hole step down buck regulator (LM2576/LM2596) to convert it to a steady 3.9v dc directly into the speaker's mainboard.
9 parts
2 layers100 × 100 mm
Horse feeder
reivax-boucoi/PCB_Kicad
Repo for all my home projects involving PCBs developped with Kicad
110 parts1
2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342