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TinySensor 001 MCU

jirihusak·majordomus·HW/TinySensor/PCB/TinySensor_001_MCU.kicad_pcb

TinySensor 001 MCU PCB layout, top view — open source PIC board by jirihusak

About the TinySensor 001 MCU PCB

TinySensor 001 MCU is an open source PIC PCB design by jirihusak, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 35 × 35 mm, with 40 components from 25 distinct parts.

Its main chip is the PIC18F57K42, from the PIC family. Other key parts include the TPS709, TLV70233DBVR and SN65HVD3082EDR. By type, the board carries 13 capacitors, 10 resistors, 7 connectors, 4 ICs, 4 diodes and 1 crystal.

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

From the project

Open source system for smart home

Majordomus is a modular automation system built on open standards. It fills the gap between closed, expensive commercial solutions and unreliable consumer-grade components — designed to be repairable, expandable, and to last for decades.

- 🧩 Modular hardware — base unit + interchangeable modules ( I/O, sensors) - 🔌 Standardized interface — RS-485 / ModBus HW interface, MQTT SW interface - 🔓 Vendor lock-in free — open hardware, open software, your choice - 🧠 Node-RED inside — visual programming for automation flows - 🧠 Home Assistant interface — MQTT integration for popular platform - 📡…

TinySensor 001 MCU, from the project README
From the project README

Main components on the TinySensor 001 MCU

PIC18F57K42TPS709TLV70233DBVRSN65HVD3082EDR

TinySensor 001 MCU bill of materials (BOM)

40 components, 25 distinct parts.

QtyPartRefs
1
PIC18F57K42
U1
1
TPS709
U2
1
TLV70233DBVR
U3
1
SN65HVD3082EDR
U8
1
Crystal_GND24
Y1
1
CONN_DEBUG
J1
2
Conn_01x08
J2, J8
1
Conn_02x03_Odd_Even
J3
1
Conn_01x04
J4
2
Conn_01x04
J5, J6
1
MF-MSMF050-2
TH1
1
LED
D1
1
SMAJ28
D2
1
BAS70LT1G
D5
1
D_TVS_x2_AAC
D6
5
100nF
C1, C5, C6, C11, C18
2
18pF
C2, C3
5
1uF
C4, C7, C9, C12, C19
1
2.2uF
C10
1
10k
R1
Show 5 more
QtyPartRefs
1
100R
R2
4
4k7
R3, R4, R5, R6
1
1k
R7
2
10R
R26, R27
1
120R
R28

TinySensor 001 MCU design files

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

TinySensor 001 MCU: common questions

What microcontroller does the TinySensor 001 MCU use?

The TinySensor 001 MCU is built around the PIC18F57K42, from the PIC family.

How big is the TinySensor 001 MCU PCB?

The TinySensor 001 MCU measures 35 × 35 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TinySensor 001 MCU?

40 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the TinySensor 001 MCU design files?

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

Can I use the TinySensor 001 MCU design in my own project?

Yes, under the terms of its GPL-3.0 license, which jirihusak chose for the repository.

Can I test firmware for the TinySensor 001 MCU without the hardware?

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

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