2 layers70.1 × 43.2 mm
Iaq device
nkitanov/iaq_board
IAQ Board is a DIY (Do-It-Yourself) device for measuring internal air quality
19 parts396
2 layers38 × 65.8 mm
Waterflow
Schluggi/waterflow-pcb1A PCB for GreatScott`s Online Water Tracker
- Size
- 38 × 65.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 23
- Pads
- 57
- Tracks, vias
- 75, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 16 Sep 2022
- Updated
- 20 Oct 2022
Overview
Waterflow is an open-source printed circuit board by Schluggi, from the Schluggi/waterflow-pcb repository on GitHub, published under the MIT licence. It is a 2-layer board of 38 × 65.8 mm with 15 parts on 23 nets, routed with 75 tracks and 0 vias.
It is built around the WEMOS D1 MINI and AO4447. Its parts include 9 resistors, 3 transistors, 1 capacitor, 1 IC and 1 connector. It belongs with the sensors and measurement boards and the ESP8266 boards of this library.
Main components
2README
README.mdwaterflow-pcb
Description
I love the idea of GreatScott`s Online Water Tracker, but unfortunately it was really difficult for me to implement his circuit on a perfboard, so I designed a cheap PCB for this.
Please notice, that this board does not replace/include the charge circuit (TP4056) or the boost converter. It only replaces the big ESP circuit.
The PCB has also some improvements:
- Connection terminals to easily (dis)connect everything
- Extra connection for a waterflow-sensors with a temperature sensor
Images
How to order?
Before you order the PCB, make sure you have all the needed components. You can find them here. Also don't forget to 3d print the case.
Ready? Let's go. I always order my PCBs via JLCPCB, a chinese PCB manufacturer.
- Create an account
- Click "Order now"
- Upload the zip file located inside the manufactoring directory
- Optional: Choose a different color, an ECO-friendly lead-free surface finish and check that no order number is printed on the PCB (for aesthetic reasons).
After all you got 5 PCBs for less than 10€.
Questions
Just open an issue :)
Credits
Created and maintained by Lukas Schulte-Tickmann / Schluggi.
Inspired by GreatScott.
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 68k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R4, R5 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R9 |
| 2 | locked | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2 |
| 1 | 22K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 4.7uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1 |
| 1 | 5k1 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | AO4447 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | Q3 |
| 1 | Terminal | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-7-5.08_1x07_P5.08mm_Horizontal | J1 |
| 1 | WeMos_D1_mini | Module:WEMOS_D1_mini_light | U1 |
Questions
How big is the Waterflow PCB?
It measures 38 × 65.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Waterflow use?
15 parts, built around the WEMOS D1 MINI and AO4447. 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 Waterflow KiCad files?
From the Schluggi/waterflow-pcb repository on GitHub, at the commit this page was made from: the board is kicad/waterflow.kicad_pcb and its schematic kicad/waterflow.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Waterflow design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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