2 layers152 × 88 mm
RFBitBangSMT
profdc9/RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
271 parts222
2 layers92.6 × 53.4 mm
SmartValvePCBv2
kliuengineering/SmartValve- Size
- 92.6 × 53.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 105
- Pads
- 190
- Tracks, vias
- 208, 7
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 9 Feb 2025
- Updated
- 9 Apr 2025
Overview
SmartValvePCBv2 is an open-source printed circuit board by kliuengineering, from the kliuengineering/SmartValve repository on GitHub. It is a 2-layer board of 92.6 × 53.4 mm with 28 parts on 105 nets, routed with 208 tracks and 7 vias.
It is built around the LM386. Its parts include 16 connectors, 7 capacitors, 2 resistors and 1 IC.
Main components
1README
readme.mdSmart Valve Shield for FRDM-K66F
- Authours
- Amir
- Kevin
- Toan
Preliminary Product Rendering
Peripherals On the Shield
Note: refer to the detailed BOM for specific components.
- USB-C power input
- ESP32S module (38 pins)
- Class AB amplifier
- RGB LED module
- Pressure sensor Qwiic adapter
- Header pins for servo motor
- Various pin sockets
- Various passive components
Hardware
The design is simple - we want to maximize the real estate of the shield so it becomes a sandbox tool for education purposes. The project about SmartValve is just a simple example of showing you its use case for education. To be fair - K66F is a development platform and is naive for commercial implementations.
Circuits
Routing
Software
Installations
-
If you are using Windows, then your machine may require an USB driver for the ESP32 MCU. You can download it here USB Driver for Windows
-
Follow the ESP32 Markdown Documentation for server-side details.
Data Logging Interface
Future Work
- Exploring radio-frequency applications.
- Implementing TinyML on ESP to carry out more mature edge computing.
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x19 | Connector_PinHeader_2.54mm:PinHeader_1x19_P2.54mm_Vertical | J9-ESP32, J9-ESP32-2, J10-ESP32, J10-ESP32-2 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C1, C4 |
| 2 | Analog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3, J7 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J9-DEV-14495, J12-RGB1 |
| 2 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2, J6 |
| 2 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4, J8 |
| 2 | Power | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1, J5 |
| 1 | 0.05uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C3 |
| 1 | 0.1uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C5 |
| 1 | 1.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 10 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C6 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical | Pot1 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D10.0mm_P3.80mm | C2 |
| 1 | C_Polarized_US | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1_Servo1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J10-Servo1 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Horizontal | J11-USBC1 |
| 1 | LM386 | Package_DIP:DIP-8_W7.62mm_Socket | U1 |
| 1 | Speaker | Capacitor_THT:C_Disc_D11.0mm_W5.0mm_P10.00mm | LS1 |
Questions
How big is the SmartValvePCBv2 PCB?
It measures 92.6 × 53.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SmartValvePCBv2 use?
28 parts, built around the LM386. 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 SmartValvePCBv2 KiCad files?
From the kliuengineering/SmartValve repository on GitHub, at the commit this page was made from: the board is SmartValvePCBv2/SmartValvePCBv2.kicad_pcb and its schematic SmartValvePCBv2/SmartValvePCBv2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SmartValvePCBv2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask kliuengineering before reusing the design.
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