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Cupltag

cuplsensor·cupltag·hardware/HT07/HT07.kicad_pcb

Cupltag PCB layout, top view — open source TI MSP430/CC board by cuplsensor
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About the Cupltag PCB

Cupltag is an open source TI MSP430/CC PCB design by cuplsensor, published on GitHub under the Custom license license. It is a 2-layer board measuring 54 × 54 mm, with 25 components from 20 distinct parts.

Its main chip is the MSP430FR2155TDBT, from the TI MSP430/CC family. Other key parts include the HDC2022DEPR, NT3H2111W0FTTJ and SIP32431DR3-T1GE3. By type, the board carries 9 capacitors, 5 resistors, 4 ICs, 1 crystal, 1 connector and 1 antenna.

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

From the project

cupl Tag Firmware and Hardware

The firmware runs on a low power MSP430 microcontroller. It periodically reads temperature and humidity from an HDC2022 sensor. Readings are base-64 encoded and stored in a URL, which resides on an NFC EEPROM.

When a phone is hovered over a cuplTag, the URL is read and a web browser opens (demo). No app is required. The web application decodes, timestamps and displays readings to the user.

Cupltag, from the project README
From the project README

Main components on the Cupltag

HDC2022DEPRNT3H2111W0FTTJMSP430FR2155TDBTSIP32431DR3-T1GE3

Cupltag bill of materials (BOM)

25 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
HDC2022DEPR
U1
1
NT3H2111W0FTTJ
U2
1
MSP430FR2155TDBT
U3
1
SIP32431DR3-T1GE3
U4
1
32K768
Y1
1
Conn_02x04_Odd_Even
J30
1
Antenna_Loop
AE1
1
CR1220
BT30
1
Jumper_2_Open
JP30
1
SW_Push
SW30
1
D_Schottky
D1
1
1N
C1
3
100N
C2, C6, C8
2
22P
C3, C4
1
10U
C7
1
0P
C9
1
18P
C10
2
10K
R1, R2
1
100K
R3
2
47K
R30, R31

Cupltag design files

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

Cupltag: common questions

What microcontroller does the Cupltag use?

The Cupltag is built around the MSP430FR2155TDBT, from the TI MSP430/CC family.

How big is the Cupltag PCB?

The Cupltag measures 54 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cupltag?

25 components, from 20 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 Cupltag design files?

From the cuplsensor/cupltag repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Cupltag design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Cupltag without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug TI MSP430/CC firmware against it before you order a PCB.

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