HardLabs

Pqdb

rmaalmeida·pqdb·projeto_hw_kicad/Base.kicad_pcb

Pqdb PCB layout, top view — open source AVR/Arduino board by rmaalmeida

About the Pqdb PCB

Pqdb is an open source AVR/Arduino PCB design by rmaalmeida, published on GitHub. It is a 2-layer board measuring 146.1 × 141 mm, with 70 components from 19 distinct parts.

Its main chip is the ARDUINO_SHIELD, from the AVR/Arduino family. Other key parts include the LM35, KW4-361, DISPLAY_JHD162A, 74HC595 and DS1307Z. By type, the board carries 29 resistors, 10 switches, 10 diodes, 7 transistors, 5 ICs and 2 LEDs.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Pão de queijo dev board

Main components on the Pqdb

LM35KW4-361DISPLAY_JHD162A74HC595DS1307Z

Pqdb bill of materials (BOM)

70 components, 19 distinct parts.

QtyPartRefs
1
LM35
U201
1
KW4-361
U301
1
DISPLAY_JHD162A
U401
1
74HC595
U601
1
DS1307Z
U701
7
BC847
Q101, Q102, Q201, Q301, Q302, Q303, Q304
1
32.768 KHz
X701
1
CR2032
BT701
1
BUZZER
BZ201
2
POT
RV201, RV401
1
ARDUINO_SHIELD
SHIELD801
10
BTN-01
SW101, SW102, SW103, SW104, SW105, SW106, SW107, SW108 +2
1
LDR
LDR201
1
ASMT-YTC2-0AA02
RGB501
10
DIODE
D101, D102, D103, D104, D105, D106, D107, D108 +2
1
10nF
C701
10
10k
R101, R102, R201, R202, R309, R310, R311, R312 +2
17
1k
R103, R104, R301, R302, R303, R304, R305, R306 +9
2
0k
R601, R602

Pqdb design files

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

Pqdb: common questions

What microcontroller does the Pqdb use?

The Pqdb is built around the ARDUINO_SHIELD, from the AVR/Arduino family.

How big is the Pqdb PCB?

The Pqdb measures 146.1 × 141 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pqdb?

70 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pqdb design files?

From the rmaalmeida/pqdb repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Pqdb design in my own project?

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

Can I test firmware for the Pqdb 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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