HardLabs

Clotty

bitshiftcrazy·clotty

Clotty PCB layout, top view — open source RP2040/RP2350 board by bitshiftcrazy

About the Clotty PCB

Clotty is an open source RP2040/RP2350 PCB design by bitshiftcrazy, published on GitHub. It is a 2-layer board measuring 113.7 × 85.8 mm, with 87 components from 45 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the TPS63031DSKR and W25Q128JVS. By type, the board carries 10 ICs, 2 connectors, 2 test points, 2 diodes, 1 transistor and 1 crystal.

It belongs with the sensors and power & battery designs in this gallery.

From the project

Uterus-shaped RP2040 period-tracking companion, sensor board, and tiny gaming device.

Clotty is a uterus-shaped RP2040 period-tracking companion, sensor board and tiny gaming device.

Clotty is a uterus-shaped, custom RP2040-based hybrid between a sensor board and a gaming device.

She originated from the wish to have an offline-only, privacy-focused period tracker that also happens to gamify the unpleasant, recurrent experience of, well, having a period.

Clotty, from the project README
From the project README

Main components on the Clotty

TPS63031DSKRRP2040W25Q128JVS

Clotty bill of materials (BOM)

87 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS63031DSKR
IC1
1
RP2040
U1
1
W25Q128JVS
U2
1
~
TI(德州仪器)
U3
1
~
MICROCHIP(美国微芯)
U5
1
~
ST(意法半导体)
U6
1
~
VISHAY(威世)
U7
1
~
MICROCHIP(美国微芯)
U8
1
~
TI(德州仪器)
U9
1
~
Micro Crystal(瑞士微晶)
U10
1
~
DIODES(美台)
Q1
1
12MHZ
12MHz
Y1
1
Display
J1
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J2
1
Coincell
BT1
6
10uF
C_ACCEL_BULK1, C_BAT1, C_BQ_OUT1, C_TPS_IN1, C_TPS_OUT1, C_TPS_OUT2
22
100nF
C_ACCEL_IO1, C_ACCEL_VDD1, C_ADCAVDD1, C_CAP1203_VDD1, C_DVDD1, C_DVDD2, C_FLASH1, C_HALL1 +14
1
4.7uF
C_BQ_IN1
2
1uF
C_VREGIN1, C_VREGOUT1
2
15pF
C_XIN1, C_XOUT1
Show 25 more
QtyPartRefs
1
Battery Conn
J_BATT1
1
1.5uH
L_TPS1
2
100Ohm
R_B1, R_G1
3
1MOhm
R_BAT_BOTTOM1, R_BAT_TOP1, R_EN_PD1
2
1kOhm
R_BOOT1, R_XOUT1
2
5.1kOhm
R_CC1, R_CC2
4
100kOhm
R_CHG_PULL1, R_PG_PULL1, R_RTC_INT1, R_TOUCH_INT1
1
10kOm
R_CS_PULL1
1
1.5kOhm
R_ILIM1
1
3kOhm
R_ISET1
1
10kOhm
R_LIGHT1
2
4.7kOhm
R_PULL_SCL1, R_PULL_SDA1
1
220Ohm
R_R1
1
0Ohm
R_SHIELD1
1
46.4kOhm
R_TMR1
2
27Ohm
R_USB_DM1, R_USB_DP1
1
470Ohm
R_VBACKUP1
1
~
ALPSALPINE(阿尔卑斯阿尔派)
SW1
5
~
C&K
SW_A1, SW_B1, SW_BOOTSEL1, SW_C1, SW_RST1
1
NCP18XH103F03RB
TH1
1
OVARY1
TP1
1
OVARY2
TP2
1
~
Wurth(伍尔特)
LED1
1
~
Nexperia(安世)
D1
1
~
ST(意法半导体)
D2

Clotty design files

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

Clotty: common questions

What microcontroller does the Clotty use?

The Clotty is built around the RP2040, from the RP2040/RP2350 family.

How big is the Clotty PCB?

The Clotty measures 113.7 × 85.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Clotty?

87 components, from 45 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 Clotty design files?

From the bitshiftcrazy/clotty 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 Clotty design in my own project?

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

Can I test firmware for the Clotty without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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