HardLabs

Patchworks

Broosky·Patchworks·KiCad/Patchworks.kicad_sch

This repository ships a schematic but no board layout.

About the Patchworks PCB

Patchworks is an open source AVR/Arduino PCB design by Broosky, published on GitHub. It is a board, with 63 components from 37 distinct parts.

Its main chip is the Arduino UNO R3, from the AVR/Arduino family. Other key parts include the LM317 Regulator (VADJ 7-12VDC), Power Monitor, LCD Display and BB Power. By type, the board carries 17 resistors, 15 connectors, 6 capacitors, 5 ICs, 5 transistors and 4 diodes.

It belongs with the sensors and displays & leds designs in this gallery.

From the project

A multi-rail prototyping board with microcontroller management.

This project consists of a set of custom electronics prototyping boards designed for testing and monitoring personal electronics projects. Each board features:

- An MCU controlled LCD display. - Voltage, current, power (V/A/W), and ambient temperature gauges. - Regulated 3.3V, 5V, and VADJ rails (7-12 VDC) for the dual 830 tie-point breadboards. - A main ATmega328P Arduino Uno R3 for system monitoring (e.g., temperature and fan control for the main regulator, and power safety with the main relay).

Main components on the Patchworks

LM317 Regulator (VADJ 7-12VDC)Power MonitorLCD DisplayBB PowerArduino UNO R3

Patchworks bill of materials (BOM)

63 components, 37 distinct parts.

QtyPartRefs
1
LM317 Regulator (VADJ 7-12VDC)
U1
1
Power Monitor
U2
1
LCD Display
U3
1
BB Power
U4
1
~
U5
1
Arduino UNO R3
A1
1
5V
M1
5
2N3904
Q1, Q2, Q3, Q4, Q5
1
VIN1 Bolt (9-24VDC)
J1
1
VIN2 Bolt
J2
1
GND Bolt
J3
6
VCC (3V3/5V) Bus
J4, J5, J6, J9, J10, J11
2
VCC (VADJ) Bus
J7, J8
1
DC
J12
1
External Clock
J13
1
Breadboard Error
J14
1
USB Power Out
J15
1
Battery
BT1
1
Piezo
BZ1
2
1A
F1, F2
Show 17 more
QtyPartRefs
1
Relay
K1
1
Post
SW1
1
Power On
SW2
1
Regulator 10k
TH1
1
Ambient 10k
TH2
1
1N4148
D1
1
Fan Act
D2
1
UNO Act
D3
1
1N4148
D4
3
470uF
C1, C2, C6
3
100nF
C3, C4, C5
3
470R
R1, R15, R16
2
750R
R2, R7
3
47K
R3, R5, R10
3
2K
R4, R6, R11
4
10K
R9, R12, R13, R18
2
1K
R14, R17

Patchworks design files

The KiCad project lives in the Broosky/Patchworks repository on GitHub; these links point at the commit this page was built from.

Patchworks: common questions

What microcontroller does the Patchworks use?

The Patchworks is built around the Arduino UNO R3, from the AVR/Arduino family.

How many components are on the Patchworks?

63 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Patchworks design files?

From the Broosky/Patchworks repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Patchworks design in my own project?

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

Can I test firmware for the Patchworks 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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