HardLabs

Quadkey

bendelathouwer·asset-tracker·pcb/asset tracker LoRa/quadkey/quadkey/quadkey.kicad_pcb

Quadkey PCB layout, top view — open source ESP32 board by bendelathouwer

About the Quadkey PCB

Quadkey is an open source ESP32 PCB design by bendelathouwer, published on GitHub. It is a 2-layer board measuring 42.1 × 72.6 mm, with 20 components from 13 distinct parts.

Its main chip is the ESP32-WROOM, from the ESP32 family. Other key parts include the MCP73831 and AMS1117-3.3. By type, the board carries 9 resistors, 3 ICs, 2 connectors, 2 diodes, 2 capacitors and 1 battery holder.

From the project

diy asset tracker

Main components on the Quadkey

MCP73831AMS1117-3.3ESP32-WROOM

Quadkey bill of materials (BOM)

20 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP73831
U1
1
AMS1117-3.3
U2
1
ESP32-WROOM
U3
1
TAGconnect_ESP
CON1
1
USB_micro
con1
1
Battery
BT1
2
LED
D1, D2
1
L
L1
2
10uF
C1, C2
2
10K
R1, R5
3
1K
R2, R3, R4
2
NM
R6, R9
2
100K
R7, R8

Quadkey design files

The KiCad project lives in the bendelathouwer/asset-tracker repository on GitHub; these links point at the commit this page was built from.

Quadkey: common questions

What microcontroller does the Quadkey use?

The Quadkey is built around the ESP32-WROOM, from the ESP32 family.

How big is the Quadkey PCB?

The Quadkey measures 42.1 × 72.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Quadkey?

20 components, from 13 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Quadkey design files?

From the bendelathouwer/asset-tracker repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Quadkey design in my own project?

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

Can I test firmware for the Quadkey without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

More boards in asset-tracker

Similar boards