2 layers65 × 56.5 mm
Tentacle raspi
whitebox-labs/tentacle-raspi-oshw
Tentacle T3 - an add-on board for Raspberry Pi to interface with Atlas Scientific sensor circuits.
38 parts11
2 layers146.1 × 53.3 mm
Watersens
whitebox-labs/tentacle32An arduino shield to host and individually isolate up to 4 Atlas Scientific sensor circuits. Measure pH, conductivity, dissolved oxygen, ORP, temperature
- Size
- 146.1 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 77
- Nets
- 56
- Pads
- 287
- Tracks, vias
- 946, 63
- Pours
- 16
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 16 Jun 2015
- Updated
- 10 Nov 2021
Overview
Watersens is an open-source printed circuit board by whitebox-labs, from the whitebox-labs/tentacle repository on GitHub. It is a 2-layer board of 146.1 × 53.3 mm with 77 parts on 56 nets, routed with 946 tracks and 63 vias.
It is built around the R1SE-0505-R, JUMPER3 and 74HCT4052D. Its parts include 21 capacitors, 19 resistors, 4 connectors and 1 switch. It belongs with the sensors and measurement boards of this library.
Main components
3README
README.mdWhitebox Labs Tentacle Shield for Arduino
Models T1.15A, T1.16
What's the Tentacle Shield?
An Arduino shield to host and individually isolate up to 4 EZO Circuits from Atlas Scientific to measure PH, Dissolved Oxygen, Electric Conductivity (E.C.), Oxidation-Reduction Potential (ORP) and RTD (Temperature).
- 4 channels
- 5V only
Individually isolated measurement circuits and communication lines prevent noise and ground loops for precise measurements even in closed-loop systems.
Getting Started
- Documentation Site
- Download the Setup Sketch
- Quick Start Tutorial
Code Examples
- Continuous readings
- Continuous, asynchronous readings
- Interactive, bidirectional communications
- Examples Git Repository
git clone https://github.com/whitebox-labs/tentacle-examples.git - Download all examples (zip)
Downloads
- Tentacle Setup sketch
- T1.16 3D-Model (STL)
- T1.16 3D-Model (STEP)
- T1.16 Mechanical Drawing (PDF)
- BNC Connector Mechanical Drawing (PDF)
- T1.16 Schematic (PDF)
Support
For customer support, please use the contact form on our website.
If you find bug in the documentation, examples or the schematic, feel free to create an issue or even a pull request here on GitHub.
Open Source
The Tentacle Shield is certified Open Source Hardware with UID CH000003. Schematics and layout are licensed under Creative Commons BY-SA 4.0. Silkscreen graphics and the trade mark “Tentacle” are intellectual property of Whitebox Labs
- Hardware source files on GitHub
git clone https://github.com/whitebox-labs/tentacle.git
Made with 
Buy
- From our store – we ship worldwide
- or from one of our Distributors
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 4.7K | tentacle:SM0805a | R1, R2, R3, R4, R5, R6, R7, R10, R11, R12, R13, R14, R15, R16, R18, R19 +2 |
| 9 | JUMPER3 | tentacle:PINHEAD1-3a | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9 |
| 4 | .1 µF | tentacle:SM0805a | C4, C9, C14, C19 |
| 4 | 0.1 µF | tentacle:SM0805a | C5, C10, C15, C20 |
| 4 | 1µF | tentacle:SM0805 | C2, C7, C12, C17 |
| 4 | 1µF | tentacle:SM0805a | C1, C6, C11, C16 |
| 4 | 2.2µF | tentacle:SM0805 | C3, C8, C13, C18 |
| 4 | ATLAS_STAMP | tentacle:Atlas_Stamp | STP1, STP2, STP3, STP4 |
| 4 | BNC | tentacle:BNC-1337543a | P1, P2, P3, P4 |
| 4 | LD2981ABU50TR | tentacle:sot89 | REG1, REG2, REG3, REG4 |
| 4 | R1SE_0505 | tentacle:R1SE_0505 | DCDC1, DCDC2, DCDC3, DCDC4 |
| 4 | SI8600 | tentacle:so-8a | SIG_ISO1, SIG_ISO2, SIG_ISO3, SIG_ISO4 |
| 2 | VAL** | fiducial | fiducial, fiducial |
| 1 | 4.7K | tentacle:SM0805 | R17 |
| 1 | 470µF | tentacle:c_tant_X | C21 |
| 1 | 74HCT4052D | tentacle:SO16N | MUX1 |
| 1 | ARDUINO_SHIELD | tentacle:ARDUINO_SHIELD_040pinsa_no_outline | SHIELD1 |
| 1 | REF | 141029_back_V2_highres_B.SilkS_146mm_flipped | VAL |
| 1 | REF | icon | VAL |
| 1 | REF | 141029_front_V3_highres_F.SilkS_146mm | VAL |
| 1 | SW_PUSH | tentacle:B3S-1000P | SW1 |
Questions
How big is the Watersens PCB?
It measures 146.1 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Watersens use?
77 parts, built around the R1SE-0505-R, JUMPER3 and 74HCT4052D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Watersens KiCad files?
From the whitebox-labs/tentacle repository on GitHub, at the commit this page was made from: the board is hardware/KiCad/watersens.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Watersens design in my own project?
Its repository states no licence, so its author keeps all rights: ask whitebox-labs before reusing the design.
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