HardLabs

Tinypulse

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

Tinypulse PCB layout, top view — open source AVR/Arduino board by jonnor

About the Tinypulse PCB

Tinypulse is an open source AVR/Arduino PCB design by jonnor, published on GitHub. It is a 2-layer board measuring 14 × 12.5 mm, with 12 components from 9 distinct parts.

Its main chip is the ATtiny1616-M, from the AVR/Arduino family. Other key parts include the LIS2DH. By type, the board carries 3 connectors, 3 resistors, 2 ICs, 2 diodes and 2 capacitors.

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

Main components on the Tinypulse

ATtiny1616-MLIS2DH

Tinypulse bill of materials (BOM)

12 components, 9 distinct parts.

QtyPartRefs
1
ATtiny1616-M
U1
1
LIS2DH
U2
1
Conn_01x08
J1
1
Conn_01x04
J3
1
Conn_01x02
J4
1
LED_RGB
D1
1
APA102-2020
D2
2
C
C1, C2
3
R
R1, R2, R3

Tinypulse design files

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

Tinypulse: common questions

What microcontroller does the Tinypulse use?

The Tinypulse is built around the ATtiny1616-M, from the AVR/Arduino family.

How big is the Tinypulse PCB?

The Tinypulse measures 14 × 12.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tinypulse?

12 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tinypulse 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 Tinypulse 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.

Can I test firmware for the Tinypulse 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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