HardLabs

Sentinel HYDRA

dhruv1859·CARVanta·hardware/sentinel/kicad/Sentinel_HYDRA/Sentinel_HYDRA.kicad_pcb

Sentinel HYDRA PCB layout, top view — open source RP2040/RP2350 board by dhruv1859

About the Sentinel HYDRA PCB

Sentinel HYDRA is an open source RP2040/RP2350 PCB design by dhruv1859, published on GitHub under the Apache-2.0 license. It is a 6-layer board measuring 93.5 × 91 mm, with 135 components from 47 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the ESP32-S3, 2MB Flash, AD5941 #1, AD5941 #2 and AS7341. By type, the board carries 63 capacitors, 23 resistors, 17 ICs, 13 connectors, 5 transistors and 4 diodes.

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

From the project

This board monitors 4 antigens simultaneously (CD19, CD22, BCMA, GPRC5D), meaning 4 independent electrochemical channels that MUST be electrically isolated from each other and from the digital noise of the ESP32 + WiFi radio.

This board monitors 4 antigens simultaneously (CD19, CD22, BCMA, GPRC5D), meaning 4 independent electrochemical channels that MUST be electrically isolated from each other and from the digital noise of the ESP32 + WiFi radio.

A 2-layer board cannot achieve this. Here's why each layer exists:

Main components on the Sentinel HYDRA

ESP32-S3RP20402MB FlashAD5941 #1AD5941 #2AS7341TCA9548AMRGERMAX30102MLX90614ESF-AAA-000-TUDS3231MLSM6DSOXTMP117BQ25895TPS630203V3_ANALOG3V3_DIGITALMAX17048

Sentinel HYDRA bill of materials (BOM)

135 components, 47 distinct parts.

QtyPartRefs
1
ESP32-S3
U1
1
RP2040
U2
1
2MB Flash
U3
1
AD5941 #1
U4
1
AD5941 #2
U5
1
AS7341
U6
1
TCA9548AMRGER
U7
1
MAX30102
U8
1
MLX90614ESF-AAA-000-TU
U9
1
DS3231M
U10
1
LSM6DSOX
U11
1
TMP117
U12
1
BQ25895
U13
1
TPS63020
U14
1
3V3_ANALOG
U15
1
3V3_DIGITAL
U16
1
MAX17048
U17
4
2N7002
Q1, Q3, Q4, Q5
1
AO3400
Q2
1
12MHz
Y1
Show 27 more
QtyPartRefs
1
USB-C
J1
8
Conn_01x03_Pin
J2, J3, J4, J5, J6, J7, J8, J9
1
TFT Display
J10
1
microSD
J11
1
Battery
J12
1
SWD_Debug
J13
1
Buzzer
BZ1
1
RESET
SW1
1
BOOT
SW2
1
UV 365nm
LED1
1
Blue 470nm
LED2
1
White
LED3
4
WS2812B
D1, D2, D3, D4
1
600Ω
FB1
1
2.2µH
L3
1
4.7µH
L4
7
10µF
C1, C3, C10, C12, C14, C19, C21
14
1µF
C2, C4, C16, C17, C30, C31, C41, C42 +6
34
100nF
C5, C7, C9, C11, C13, C15, C18, C22 +26
4
22µF
C6, C8, C20, C27
2
15pF
C34, C35
2
10nF
C38, C46
2
5.1kΩ
R1, R2
13
10kΩ
R3, R4, R5, R6, R7, R8, R9, R10 +5
6
100Ω
R15, R16, R17, R20, R21, R24
1
68Ω
R18
1
47Ω
R19

Sentinel HYDRA design files

The KiCad project lives in the dhruv1859/CARVanta repository on GitHub; these links point at the commit this page was built from.

Sentinel HYDRA: common questions

What microcontroller does the Sentinel HYDRA use?

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

How big is the Sentinel HYDRA PCB?

The Sentinel HYDRA measures 93.5 × 91 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Sentinel HYDRA?

135 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the Sentinel HYDRA design files?

From the dhruv1859/CARVanta repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Sentinel HYDRA design in my own project?

Yes, under the terms of its Apache-2.0 license, which dhruv1859 chose for the repository.

Can I test firmware for the Sentinel HYDRA 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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