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Winslow 2.54mm Part No W30508TRC
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Photo transistor circuit help
Hi,
I have given my circuit here.
When the photo transistor detects the emitter light, the voltage at the emitter of photo transistor is 11.5V. But at the collector of pnp it is 12V. How is like this, since high voltage is at the base of pnp it should not work know?
Thanks,
1 post - 1 participant
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Fritzing lags a lot
Hello,
I was trying to create a simple circuit on a protoboard and Fritzing keeps lagging.
Core i5 11th
Mx450
16gb Ram.
I don’t think specs are the problem, right?
What may it be?
Thanks.
5 posts - 3 participants
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SO8N SMT Socket
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Ground fill seeds
Fritzing does not seed pins of basic elements.
Eg:
Generic female header
Generic IC, SO-08
Ground fill keepout 10 mil, but tried with 5 but not working.
Please find attached a simple test.
test.fzz (3.5 KB)
0.9.9 version, MAC Monterey, Apple M1 Pro
1 post - 1 participant
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4 PIN JST Connector
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Extra Wire in Shield Circuit Model
I have designed a shield using the Arduino UNO (Rev 3) part in order to define the pin header spacings so that I can connect the shield PCB to the actual Arduino UNO (Rev 3) sitting below the shield PCB.
The shield circuit model passes the Design Rules Check.
However, in the PCB Window, the Fritzing software automatically placed a wire from the Arduino part Pin A5 up to the Arduino Pin, two pins to the left of Arduino Pin AREF on the top side of the Arduino part.
I did not draw this wire . Fritzing drew the wire. See this wire in the PCB Window of the attached file, “Shield”.
If I take out the wire as done in file, “Shield, No Wire”, then the brown wire from Arduino Pin A5 disappears as shown in the Bread Board and Schematic Windows of this file.
When I connect the brown wire in these two windows, the extra wire reappears in the PCB window.
Is this extra wire, which appears in the file “Shield” PCB Window, required to complete the “Shield” design?
Since the “Shield” file appears to require this extra wire, and passes the DRC check, I assume that Fritzing will prepare the correct Gerber file for the shield PCB build. Is this correct?
Shield.fzz (59.4 KB)
Shield No Wire.fzz (57.5 KB)
1 post - 1 participant
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2.42" inch Green OLED Display SSD1309 128x64 SPI Serial Port Module For Arduino
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Esp8266-01 adapter
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Does somebody has the fritzing part for a 4S BMS?
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Looking for model PCF8574 IO Expansion Board
PCF8574 IO Expansion Board
PCF8574 IO Expansion Board
PCF8574, I2C interface, 8-bit parallel port
Primary Attribute
Category: Modules
Brand: Waveshare
Website
International: Website
Chinese: 官方网站
Onboard Interfaces
Contents
[hide]
- 1 Overview
- 2 Features
- 3 Pinouts
- 4 Beware of knock-offs
- 5 Setup software
- 6 Download examples
- 7 Hardware connection
- 8 Run examples
- 9 Hardware connection
- 10 Examples
- 11 Hardware connection
- 12 Examples
- 13 Resources
- 14 FAQ
- 15 Support
Overview
The PCF8574 IO Expansion Board is used as a remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574, IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.
The PCF8574 IO Expansion Board features an I2C pinheader on one side and an I2C connector on the opposite side. Hence, it’s more flexible to connect the board to your development system. The board also supports I2C cascading, allowing the use of multi modules connected to the I2C bus at the same time by connecting the pinheader and connector.
Features
- Chip: PCF8574
- Working voltage: 3.3V/5V
- IO: 8
- Interface: I2C
Pinouts
| Pin | Description |
|---|---|
| VCC | 3.3V/5V |
| GND | Power ground |
| SDA | I2C data input |
| SCL | I2C clock pin |
Hardware connection
| PCF8574 | Raspberry Pi | Description |
|---|---|---|
| Board order | ||
| VCC | 5V | Power input |
| GND | GND | Power ground |
| SDA | 3 | I2C data input |
| SCL | 5 | I2C clock pin |
1 post - 1 participant
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DIP Polarizing Key Connector 20P
Hi,
Need the following component 20 PIN in exact dimensions for PCB manufacturing
Thanks.
1 post - 1 participant
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Rotating a complete pcb layout 180 degrees
Well, it was over 1 year ago that I was stumbling across this problem and it
was solved then. But now it happens that I again want to rotate the whole pcb 180 degrees. Tried to execute the above mentioned advice but failed.
When I now select the pcb and try to tick Sticky in the inspector, that area in the inspector turns blank. Nothing to select possible.
What am I doing wrong?
1 post - 1 participant
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Properties for custom parts
Hi,
I’m trying to develop custom parts for my model railroad hobby,
but I’m stumbling over parts properties:
How are properties made
a) changable - mine get fixed after saving-
b) provide lists for selection - for example “common” “anode”/“cathode” - for multiple LED’s etc. , for simply “yes”/“no”
In breadboard view, is there a possibility for combining wires to busses ? For example I2C SDA/SCL/GND or servo signal/+5V/GND. This would save space and make the view not so crowded.
1 post - 1 participant
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ICP-10125 and PIM580
Hello all,
Hope we are safe and well,
I am a complete newbie and have had a google for the following parts and wondered if they have already been fritzed or if I could request them to be?
Thanks for your time, any help greatly received.
2 posts - 2 participants
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DC-DC 5V 3A BEC Power Supply Buck Step Down Module
Hi,
Anyone has .fzz file for module available below
pls help
Thanks
1 post - 1 participant
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Pololu 5V Step-Up Voltage Regulator U1V11F5
Hi,
Do anybody has .fzz file for
pls help.
Thanks
1 post - 1 participant
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Pessure sensor MPX5700
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FPC Connectors 20 pin
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Adjusting RC Oscillator Circuit Frequency Problem
Hello guys,
Recently I am working on RC oscillator circuit based on it, but I had problems with adjusting frequency. I can adjust frequency but it effects amplitude too (amplitude is changing while adjusting frequency), how can i separate these two variables ? I mean, when I am adjusting frequency, I want to amplitude remains same, and also for amplitude too. By the way I am using this circuit : (Ignore the opamp circuit, it is converting sinusoidal wave into square wave.)
Anyone has ideas of it? Thank you in advance.
1 post - 1 participant
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