HardLabs

PowerSupply

LOEWE-emergenCITY·freespeaker·electric_design/FreeSpeaker/PowerSupply/PowerSupply.kicad_pcb

PowerSupply PCB layout, top view — open source AVR/Arduino board by LOEWE-emergenCITY

About the PowerSupply PCB

PowerSupply is an open source AVR/Arduino PCB design by LOEWE-emergenCITY, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 35 components from 23 distinct parts.

Its main chip is the ATmega32-16A, from the AVR/Arduino family. Other key parts include the TPS5450DDAR and slice_connector_male. By type, the board carries 15 capacitors, 7 resistors, 3 ICs, 3 connectors, 3 diodes and 2 transistors.

It belongs with the iot & wireless designs in this gallery.

From the project

The modular, research-friendly smart home hub

For developing we used KiCAD which is an open source CAD software. It was used by the Raspberry Pi Foundation for their IO Board and the Compute Module.

ONLY store files we already build. First step will only have project and schematics!

Each subdir is a stand alone KiCAD project.

The top level project is - for referencing the different schematics - showing the dependencies between the different PCBs - documentation - generating a full bill of material

Main components on the PowerSupply

TPS5450DDARATmega32-16Aslice_connector_male

PowerSupply bill of materials (BOM)

35 components, 23 distinct parts.

QtyPartRefs
1
TPS5450DDAR
U1
1
ATmega32-16A
U4
1
slice_connector_male
U5
1
Q_NPN_BEC
Q1
1
AOSP21321
Q2
1
AVR-JTAG-10
J2
1
Conn_02x04_Odd_Even
J4
1
Barrel_Jack
J16
1
LED Green
D2
1
SS54
D4
1
BZX84C12
D5
1
10m
L1
1
15uH
L3
2
100n 100v
C1, C16
2
10n
C2, C12
1
100n
C3
9
10u 50v
C4, C5, C6, C7, C8, C9, C10, C11 +1
1
330u
C14
2
10k5 1%
R1, R11
1
120
R4
Show 3 more
QtyPartRefs
2
2K2
R5, R6
1
3k3 1%
R12
1
12K 1%
R13

PowerSupply design files

The KiCad project lives in the LOEWE-emergenCITY/freespeaker repository on GitHub; these links point at the commit this page was built from.

PowerSupply: common questions

What microcontroller does the PowerSupply use?

The PowerSupply is built around the ATmega32-16A, from the AVR/Arduino family.

How big is the PowerSupply PCB?

The PowerSupply measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PowerSupply?

35 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the PowerSupply design files?

From the LOEWE-emergenCITY/freespeaker repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the PowerSupply design in my own project?

The repository has no license, so all rights stay with LOEWE-emergenCITY. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the PowerSupply without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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