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2 layers30 × 30 mmMeasure, the printed circuit board in 3D

ATTiny 85 based Current & Voltage measurement tool

Size
30 × 30 mm
Copper layers
2
Thickness
1.6 mm
Parts
15
Nets
13
Pads
54
Tracks, vias
111, 9
Pours
4
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
2 Jun 2023
Updated
27 Nov 2024

Overview

Measure is an open-source printed circuit board by NikhilMotagi, from the NikhilMotagi/FancyDMM repository on GitHub. It is a 2-layer board of 30 × 30 mm with 15 parts on 13 nets, routed with 111 tracks and 9 vias.

It is built around the ATTINY85-20SU and AMS1117-3.3. Its parts include 4 ICs, 3 resistors, 2 connectors, 1 capacitor and 1 switch. It belongs with the sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

2

README

README.md

FancyDMM

Inspired by the Atmega328P-based voltage and current measuring device utilizing the INA266 current sensor, I aim to create a more compact and cost-effective version using the versatile ATTiny microcontroller. This project will involve designing a circuit to measure both voltage and current, processing the data using the ATTiny, and displaying the results on an appropriate display. To keep the code size low, I used Bare Metal coding.


Photo Gallery


Project Inspired from

link : https://hackaday.io/project/191203-mini-oled-panel-meter

Parts

15
QtyValueFootprintReferences
2LOGOsche:tinyZINGERG***, G***
2RResistor_SMD:R_0603_1608MetricR4, R5
1AMS1117-3.3Package_TO_SOT_SMD:SOT-223-3_TabPin2U3
1ATtiny85-20SPackage_SO:SOIC-8W_5.3x5.3mm_P1.27mmU1
1Battery_connConnector_JST:JST_GH_SM02B-GHS-TB_1x02-1MP_P1.25mm_HorizontalJ2
1CCapacitor_SMD:C_0805_2012MetricC1
1INTestPoint:TestPoint_Pad_4.0x4.0mmTP1
1INA226Package_SO:VSSOP-10_3x3mm_P0.5mmU2
1Makeshift_SPI_headerConnector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_VerticalJ1
1OUTTestPoint:TestPoint_Pad_4.0x4.0mmTP2
1RResistor_SMD:R_2512_6332MetricR1
1SSD1306_OLEDModulesche:SSD1306_OLEDModuleU4
1SW_SPSTButton_Switch_SMD:SW_SPDT_CK-JS102011SAQNSW1

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Questions

How big is the Measure PCB?

It measures 30 × 30 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Measure use?

15 parts, built around the ATTINY85-20SU and AMS1117-3.3. 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 Measure KiCad files?

From the NikhilMotagi/FancyDMM repository on GitHub, at the commit this page was made from: the board is measure.kicad_pcb and its schematic measure.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Measure design in my own project?

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