HardLabs

Load cell amplifier

dodotronix·Haptix·hw/load_cell_amplifier/load_cell_amplifier.kicad_pcb

This repository ships a schematic but no board layout.

About the Load cell amplifier PCB

Load cell amplifier is an open source AVR/Arduino PCB design by dodotronix, published on GitHub. It is a 2-layer board, with 22 components from 16 distinct parts.

Its main chip is the Arduino_UNO_R3, from the AVR/Arduino family. Other key parts include the INA129, TL072 and MCP3008. By type, the board carries 7 resistors, 4 ICs, 4 test points, 4 capacitors and 1 module.

It belongs with the audio and sensors designs in this gallery.

From the project

Project that process data from pressure sensor to control the punch sharpening

update system with > pacman -Syu download > pacman -S python download snap shot from link: https://aur.archlinux.org/packages/python-spidev/ open terminal -> cd /path/to/file -> tar xzf file-name -> cd file-name -> makepkg -s -> sudo pacman -U name-of-file.pkg.tar.xz copy test.py to raspberry cd /path/to/test.py chmod +x test.py ./test.py * you select functions in script, which you want to run

Main components on the Load cell amplifier

INA129TL072MCP3008Arduino_UNO_R3

Load cell amplifier bill of materials (BOM)

22 components, 16 distinct parts.

QtyPartRefs
1
INA129
U1
2
TL072
U2, U3
1
MCP3008
U4
1
Arduino_UNO_R3
A1
2
R_Potentiometer_Trim
RV1, RV2
2
INPUT_A
TP1, TP2
1
INPUT_B
TP3
1
Digilent AD3
TP4
1
200n
C1
2
150u
C2, C3
1
333u
C4
1
1k
R1
1
4k
R2
1
36k
R3
3
10k
R4, R6, R7
1
25k
R5

Load cell amplifier design files

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

Load cell amplifier: common questions

What microcontroller does the Load cell amplifier use?

The Load cell amplifier is built around the Arduino_UNO_R3, from the AVR/Arduino family.

How big is the Load cell amplifier PCB?

The Load cell amplifier has 2 copper layers and is 1.6 mm thick.

How many components are on the Load cell amplifier?

22 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Load cell amplifier design files?

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

Can I use the Load cell amplifier design in my own project?

The repository has no license, so all rights stay with dodotronix. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Load cell amplifier 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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