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Proyecto Grado

TomasOsP·electric-field-sensor

Proyecto Grado PCB layout, top view — open source board by TomasOsP

About the Proyecto Grado PCB

Proyecto Grado is an open source PCB design by TomasOsP, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 49 × 44.5 mm, with 24 components from 17 distinct parts.

Other key parts include the AMS1117-3.3 and CP2102N-Axx-xQFN28. By type, the board carries 12 resistors, 8 capacitors, 2 ICs and 2 connectors.

It belongs with the sensors, test & measurement and usb & debug tools designs in this gallery.

From the project

Non-contact electric-field sensor with INA114 front-end + USB-C — KiCad hardware (CC BY 4.0)

Undergraduate degree project: a non-contact electric-field sensor with an instrumentation-amplifier analog front-end and a USB interface for data acquisition on a host computer. Designed in KiCad as a set of SMD boards.

The board senses a weak electric field through a front-end instrumentation amplifier (INA114) followed by a TL082 op-amp stage for further conditioning. An on-board AMS1117-3.3 regulator supplies the analog and digital sections, and a CP2102N USB-UART bridge with a USB-C connector streams data to a host over a standard virtual COM port — no external programmer or interface…

Main components on the Proyecto Grado

AMS1117-3.3CP2102N-Axx-xQFN28

Proyecto Grado bill of materials (BOM)

24 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-3.3
U1
1
CP2102N-Axx-xQFN28
U3
1
EF Sensor
J1
1
USB_C_Receptacle_USB2.0_16P
J7
2
0.1uF
C1, C2
2
22uF/10V(20%)
C3, C4
3
0.1uF/50V(10%)
C5, C7, C8
1
4.7uF/6.3V(10%)
C6
2
10k
R1, R2
1
2K(5%)
R3
1
10K(5%)
R4
1
220
R5
2
5.1K
R6, R7
2
0(5%)
R8, R9
1
47.5K
R10
1
22.1K
R11
1
2K
R12

Proyecto Grado design files

The KiCad project lives in the TomasOsP/electric-field-sensor repository on GitHub; these links point at the commit this page was built from.

Proyecto Grado: common questions

How big is the Proyecto Grado PCB?

The Proyecto Grado measures 49 × 44.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Proyecto Grado?

24 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Proyecto Grado design files?

From the TomasOsP/electric-field-sensor repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Proyecto Grado design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which TomasOsP chose for the repository.

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