Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
This project appears to be a 4-layer PCB design for a Klipper I2C thermistor board. Klipper is a popular 3D printer firmware that can be customized with additional electronics, such as temperature sensors like thermistors, which typically use the I2C communication protocol.
Key Components and Connections
ADS1115:
This is a high-precision, low-power, 16-bit ADC (Analog-to-Digital Converter) with four channels, manufactured by Texas Instruments.
It's connected to thermistor inputs and communicates over I2C.
These are connectors for thermistor sensors, each with two pins.
The thermistors are interfaced with the ADS1115's analog input channels AIN0,AIN1,AIN2,AIN3.
Resistors (R1 - R4):
All four resistors have the same value, 4.7k ohms.
They are used as pull-up resistors in the circuit, likely to provide a reference voltage or to stabilize signals.
Jumpers (0x48, 0x49, 0x4A, 0x4B):
These are likely used to set configurations, such as the I2C address for the ADS1115.
Power Input (3.3V in):
Provides the necessary 3.3V power to the circuit.
I2C Bus (I2C IN and I2C OUT):
These are connectors for the I2C bus to receive (IN) and transmit (OUT) data.
Connections
The ADC's I2C interface is connected to the I2C bus, allowing it to communicate with a microcontroller or another part of the Klipper system.
The thermistors are connected to the analog inputs of the ADS1115, with resistors likely providing a voltage divider configuration for accurate voltage readings.
The jumpers are included on the board to set unique I2C addresses for different devices or to enable specific features.
Mounting holes (H1 and H2) are included for physical mounting of the board.
Manufacturing Specifics
The design specifies 4 layers, including specifics on copper thickness.
The PCB is optimized for manufacturing with PCBWay, a known PCB manufacturer.
This board acts as an interface between multiple thermistors and a system running Klipper firmware, reading temperature data, and communicating it over I2C. If you need further details or specific aspects explained, let me know!
2mo
ok these via seem a bit buggy because I try to do a trace at a different layer a...
This setup will ensure a stable 3.3V output from the LTC3406B, suitable for powering your component. If you need further details on generating 3.3V from a different input voltage, refer to the practical tips and datasheets[1].
Yes, Flux has many SMD components, including inductors, in its library.
You can search for a 4.7µH inductor in Flux by following these steps:
Open your project in Flux.
Use the search bar to look for "4.7µH inductor SMD".
You can filter the results by selecting the "Components" type to narrow down your search specifically to inductors.
Additionally, considering typical values and types for inductors, you may find a relevant component that matches your needs[1].
If you have specific requirements like current rating or package type, you can refine your search accordingly. If you need additional help in placing the inductor on your schematic, please let me know!
To determine which pin on component U2 is the VOUT, it would be helpful to know the specific part number or identifier for U2. However, I understand that you might be dealing with a typical component like a voltage regulator or a DC-DC converter.
If U2 is something like the LTC3406B, the VOUT pin is usually labeled accordingly in the datasheet.
For example, in the case of LTC3406B, the VOUT pin is typically pin 3.
Here is a typical pin configuration:
Pin 1: VIN (Input Voltage)
Pin 2: GND (Ground)
Pin 3: VOUT (Output Voltage)
Pin 4: SW (Switching Node)
If you provide the exact part number or more information about U2, I can give you a more precise answer!
Yes, you can use the MP2231 to step down a 24V input to a 3.3V output. The MP2231 is a high-frequency, synchronous, step-down regulator with an input voltage range of 4.2V to 24V, making it suitable for your application.
Steps to Configure MP2231 for 3.3V Output
Input Voltage:
Connect your 24V input voltage source to the VIN pin of the MP2231.
Ensure the input capacitor (typically 22µF) is placed between VIN and GND.
Output Voltage:
The output voltage can be set using an external resistor divider connected from the FB (feedback) pin to VOUT and GND.
For a 3.3V output, calculate the resistors using the formula: $ V_{OUT} = V_{REF} \times (1 + \frac{R1}{R2}) $
Where $ V_{REF} $ is typically 0.8V for the MP2231.
Choose R2 (typically 10kΩ) and calculate R1:
$ R1 = R2 \times \left(\frac{V_{OUT}}{V_{REF}} - 1\right) $
For 3.3V output:
R1=10kΩ×(0.8V3.3V−1)≈31.25kΩ
Additional Components:
Connect an inductor (typically around 4.7µH to 10µH) between the SW pin and VOUT.
Place an output capacitor (typically 22µF) between VOUT and GND.
Sample Connections:
Connect MP2231:VIN to the 24V input.
Connect MP2231:GND to ground.
Connect MP2231:SW to the inductor, and the other end of the inductor to VOUT.
Place a 22µF capacitor between VOUT and GND.
Connect resistors R1 and R2 to create the feedback network:
Connect R2 (10kΩ) between FB and GND.
Connect R1 ($31.25kΩ$) between FB and VOUT.
If you need further clarification, feel free to ask!
The ADS1115 is a 16-bit ADC with an I2C interface. You can set its address using the ADDR pin, allowing up to four ADS1115 devices on the same I2C bus by assigning a different address to each one.
Setting the I2C Address for the ADS1115
The I2C address is determined by the connection of the ADDR pin. The possible configurations are:
ADDR to GND: 0x48
ADDR to VDD: 0x49
ADDR to SDA: 0x4A
ADDR to SCL: 0x4B
Connecting the ADDR Pin
To Set the Address to 0x48:
Connect ADS1115:ADDR to GND.
To Set the Address to 0x49:
Connect ADS1115:ADDR to VDD.
To Set the Address to 0x4A:
Connect ADS1115:ADDR to SDA.
To Set the Address to 0x4B:
Connect ADS1115:ADDR to SCL.
Example Configurations:
GND Address (0x48):
Connect ADS1115:ADDR to GND.
VDD Address (0x49):
Connect ADS1115:ADDR to VDD.
Schematic Connection Example for Address 0x48:
Connect ADS1115:VDD to your power supply (typically 3.3V or 5V).
Connect ADS1115:GND to ground.
Connect ADS1115:SCL to the I2C clock line.
Connect ADS1115:SDA to the I2C data line.
Connect ADS1115:ADDR to ground (GND).
This setup will ensure that the ADS1115 has an I2C address of 0x48. If you need further assistance with your specific configuration or additional details, feel free to ask!
Yes, you can bridge between copper layers in Flux using vias. Vias are used to make electrical connections between different layers of a PCB, allowing you to route signals from one layer to another effectively.
Steps to Bridge Between Copper Layers Using Vias in Flux:
Place Copper Fills:
On the desired layers where you need connections, place the copper fills or traces as required.
Add Vias:
Select the Via Tool from the toolbar in Flux.
Click at the point where you want to place the via to connect different layers.
Adjust the via properties if necessary (drill size, pad size, etc.).
Connect Copper with Vias:
Ensure that the copper fills or traces on different layers are connected through the vias. The software will ensure these connections appropriately.
Flux's algorithm automatically tries to connect copper islands using vias before removing any unconnected copper0047f997−b5ba−5699−a530−7dc5ce1e9d62. This means that if there's a possibility to connect copper fills via island vias, it will do so automatically.
Example Steps:
Top Layer Trace:
Route your trace to the position where you want the via.
Place Via:
Use the via tool to place a via at the end of the top layer trace.
Bottom Layer Trace:
Switch to the bottom layer and route the trace starting from the via.
This will create an electrical bridge from the top layer to the bottom layer through the via.
If you need to define specific copper-free regions or use copper cutouts, you can also do that in Flux61c18b62-17fb-50bd-bd3f-695e9e0bf7fd$$$$3eeadf7e-a9cb-511e-8bb3-f19f953b9b92.
Feel free to ask if you have more specific questions or need further assistance with your PCB design in Flux!
3mo
Hi! I’m Copilot, I’m here to help you design your hardware projects. Ask me anyt...
Diseñar una fuente de poder variable puede ser un proyecto muy interesante y educativo. Aquí te dejo una guía básica para empezar:
Componentes Clave
Transformador: Transforma la tensión de entrada de CA a una tensión más baja de CA.
Rectificador: Convierte la corriente alterna (CA) en corriente continua (CC).
Filtro: Suaviza las ondulaciones del voltaje CC.
Regulador: Ajusta el voltaje de salida a un valor específico y lo mantiene estable. Para una fuente variable, puede usar un regulador ajustable como el LM317.
Potenciómetro: Permite ajustar el voltaje de salida.
Diagrama de Bloques Básico
Aquí tienes un diagrama de bloques simplificado usando mermaid:
Image
Pasos Básicos del Diseño
Seleccionar el Transformador: Elige un transformador adecuado que pueda suministrar el voltaje y corriente necesarios para tu aplicación.
Diseño del Rectificador: Puedes usar un puente rectificador de diodos para convertir el AC en DC.
Incorporar un Filtro: Generalmente, se utilizan condensadores para suavizar el voltaje rectificado.
Implementar el Regulador: Usa un regulador ajustable como el LM317 con un potenciómetro para variar el voltaje de salida.
Cálculo de Componentes: Calcula los valores necesarios para los componentes usando fórmulas estándar dependiendo del rango de voltaje y corriente que deseas.
Simulación y Prueba: Antes de diseñar el PCB, simula el circuito para verificar su funcionamiento.
Construcción del PCB en Flux
Una vez que tengas el diseño esquemático, puedes utilizar Flux para crear el diseño del PCB:
Ingresar Esquema: Dibujar el esquema en Flux utilizando las herramientas de captura esquemática.
Diseño de PCB: Coloca los componentes en el área del PCB y enruta las conexiones.
Verificación: Utiliza las verificaciones DRC (Design Rule Check) para asegurar que todo cumple con las especificaciones.
¿Tienes alguna pregunta específica sobre algún paso o componente?
1mo
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Passive Components
Resistor Power Rating
Beta
Checks that the power traveling across a given resistor is under its rating with 50% headroom.