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Z-probe on smd resistors-2512

IvDm·Z-probe-on-smd-resistors-2512·kicad_hx711_tyny85/kicad_hx711_tyny85.kicad_pcb

Z-probe on smd resistors-2512 PCB layout, top view — open source AVR/Arduino board by IvDm
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About the Z-probe on smd resistors-2512 PCB

Z-probe on smd resistors-2512 is an open source AVR/Arduino PCB design by IvDm, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 15.3 × 19.3 mm, with 17 components from 13 distinct parts.

Its main chip is the ATtiny85V-10SU, from the AVR/Arduino family. Other key parts include the HX711. By type, the board carries 6 connectors, 4 capacitors, 3 resistors, 2 ICs, 1 transistor and 1 diode.

It belongs with the sensors designs in this gallery.

From the project

Auto bed level strain gage for 3D printer using resistors 2512 instead of strain gauges.

As a result, on a double-sided printed circuit board such a sensor was made:

To reduce side effects, the resistors are placed on a two-sided printed circuit board diagonally from both sides. So the sensitivity at the midpoint turned out to be maximum with vertical exposure.To reduce the length of conductors coming from the sensor, it was decided to make a small circuit board for signal processing and place it directly on the sensor board. On the one side of the board is the ADC of the HX711, and on the other the microcontroller ATtiny85.

Z-probe on smd resistors-2512, from the project README
From the project README

Main components on the Z-probe on smd resistors-2512

HX711ATtiny85V-10SU

Z-probe on smd resistors-2512 bill of materials (BOM)

17 components, 13 distinct parts.

QtyPartRefs
1
HX711
U1
1
ATtiny85V-10SU
U2
1
Q_PNP_BEC
Q1
1
Conn_01x03_Male
J1
1
Conn_01x04_Female
J2
4
Conn_01x01_Female
J3, J4, J5, J6
1
LED
D1
1
4.7u
C1
2
1u
C2, C3
1
0.1u
C4
1
22k
R1
1
8k2
R2
1
2k2
R3

Z-probe on smd resistors-2512 design files

The KiCad project lives in the IvDm/Z-probe-on-smd-resistors-2512 repository on GitHub; these links point at the commit this page was built from.

Z-probe on smd resistors-2512: common questions

What microcontroller does the Z-probe on smd resistors-2512 use?

The Z-probe on smd resistors-2512 is built around the ATtiny85V-10SU, from the AVR/Arduino family.

How big is the Z-probe on smd resistors-2512 PCB?

The Z-probe on smd resistors-2512 measures 15.3 × 19.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Z-probe on smd resistors-2512?

17 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Z-probe on smd resistors-2512 design files?

From the IvDm/Z-probe-on-smd-resistors-2512 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Z-probe on smd resistors-2512 design in my own project?

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

Can I test firmware for the Z-probe on smd resistors-2512 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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