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Ledarray

jonnor·embeddedml·emlearn/pulsemeter/hardware/ledarray/ledarray.kicad_pcb

Ledarray PCB layout, top view — open source board by jonnor
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About the Ledarray PCB

Ledarray is an open source PCB design by jonnor, published on GitHub. It is a 2-layer board measuring 15.2 × 10 mm, with 10 components from 3 distinct parts.

By type, the board carries 4 diodes, 4 resistors and 2 connectors.

It belongs with the sensors, iot & wireless and wearables designs in this gallery.

From the project

Notes on Machine Learning on edge for embedded/sensor/IoT uses

Sensor principle is measuring reflected/absorbed light Easy with dedicated electronics. https://lastminuteengineers.com/pulse-sensor-arduino-tutorial/

Can it be done with simple components found in an Arduino starter kit? Like a LED and LDR, or two LEDs?

Could use detected beat events to trigger LEDs in sync with beat Demo could be exercising to increase Can use commercial BMP monitor on wristband/smartwatch as reference

Ledarray bill of materials (BOM)

10 components, 3 distinct parts.

QtyPartRefs
2
Conn_01x04
J1, J2
4
LED
D1, D2, D3, D4
4
R
R1, R2, R3, R4

Ledarray design files

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

Ledarray: common questions

How big is the Ledarray PCB?

The Ledarray measures 15.2 × 10 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ledarray?

10 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Ledarray design files?

From the jonnor/embeddedml repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Ledarray design in my own project?

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

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