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2 layers119.7 × 118.8 mmHeartbie, the printed circuit board in 3D

cute little virtual pet on even cuter PCB

Size
119.7 × 118.8 mm
Copper layers
2
Thickness
1.6 mm
Parts
24
Nets
35
Pads
78
Tracks, vias
240, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
10 Oct 2026
Updated
12 Oct 2026

Overview

Heartbie is an open-source printed circuit board by SILLYIEST, from the SILLYIEST/HalfLifeHardware repository on GitHub. It is a 2-layer board of 119.7 × 118.8 mm with 24 parts on 35 nets, routed with 240 tracks and 0 vias.

It is built around the DHT11. Its parts include 7 resistors, 6 diodes, 2 ICs, 2 connectors and 2 switches. It belongs with the ESP32 and RISC-V boards of this library.

Main components

1

README

README.md

Heartbie

Heartbie Front Render

Mini pet that you can interact with! (Based off of the starter project Starbie)

This was so fun to create! I love doing personal projects (despite having no prior experience here T-T)

Parts

24
QtyValueFootprintReferences
6LEDLED_THT:LED_D5.0mmD1, D2, D3, D4, D5, D6
6RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR2, R3, R4, R5, R6, R7
5LOGOLOGOG***, G***, G***, G***, G***
2SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2
110KResistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_HorizontalR1
1Conn_01x04_PinImported Parts:Display_128x64_096_I2CJ1
1Conn_01x08_PinConnector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalJ2
1DHT11Sensor:Aosong_DHT11_5.5x12.0_P2.54mmU1
1XIAO-ESP32-C3-SMDImported Parts:XIAO-ESP32-C3-SMDU2

Questions

How big is the Heartbie PCB?

It measures 119.7 × 118.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Heartbie use?

24 parts, built around the DHT11. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Heartbie KiCad files?

From the SILLYIEST/HalfLifeHardware repository on GitHub, at the commit this page was made from: the board is Week 1 - Heartbie/PCB/Heartbie.kicad_pcb and its schematic Week 1 - Heartbie/PCB/Heartbie.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Heartbie design in my own project?

Its repository states no licence, so its author keeps all rights: ask SILLYIEST before reusing the design.

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