Questions tagged [pins]
May refer to conductive traces of an integrated circuit, exposed as metal contacts, or pins, which are large by comparison and make physical connection to other components feasible. May also refer to metal pins connected to specific traces of a printed circuit board for the purpose of connecting and disconnecting external components or peripherals in a reusable way.
528 questions
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Can breadboard internal clips be tightened?
I used one of these potentiometers with wide leads in a large prototype breadboard (like 4 long breadboards put side-by-side) I have.
The image in the product page is poor, but it looks like this
...
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When would we like to use a resistor here?
In Xilinx's 7 Series FPGAs Configuration User Guide (UG470), they say
M[2:0] determine the configuration mode. Connect each
mode pin either directly, or via a ≤1 kΩ resistor, to VCCO_0 or GND.
Adding ...
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What does 'open-drain' mean here? What special attention should I pay when designing the connection of this I/O pin?
In Xilinx's 7 Series FPGAs Configuration User Guide (UG470), they say INIT_B is an open-drain bidirectional pin. What does it mean by 'open-drain'?
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Pin 1 location on LT16176CS8 chip
Pin 1 should be the red arrow, right?
picture source: audiolights.eu
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When using a dual op amp, is this OK to leave the second op amp with pins floating or should it be connected?
I am using a LM358 chip in DIP-8 package.
It contains 2x LM358. Only the first op amp is used.
Is this OK to leave the pins of the unused opamp floating ? (pins 5, 6, 7 in this case).
Or is this ...
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Checking Switching Power Supply with only 5/6 pins using paper clip and Multimeter
I'm trying to test the Switching Power Supply (HP 600 AIO 180W - Model PA-1181-9 PN 699890-001 718273-001) with 6 pins (however, only 5 are used), that looks like this:
It is a part of the HP ProOne ...
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How to connect two boards without female header pins?
I've been working on an add-on board for the Raspberry Pi Pico and now I'm ready to connect the two. The trouble is, I don't have any female header pins, and I would rather not pay $10 in shipping for ...
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ICE40HX1K pin ambiguity
Here I have again re-designed an ICE40HX1K board schematic - this time with some added things:
Attached no-connection symbols to the NC pins
Connected the ...
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Confusion assigning correct pins and DTE/DCE terms for RS232 communication using MAX3232
I want to control a hardware device which is controlled by its RS232 interface and it has female DB9(DE-9) port for serial communication. Normally the hardware device is controlled via a PC's serial ...
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Confusion with interpreting the functionality of an IC
I'm trying to understand the use of this power switch IC in automatic mode. And at one page of the datasheet it mentions the following application:
In my case, I want to use this IC to auto select ...
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How to protect a μc IO pin that might see voltage when μc is off but must read it when μc is on?
I have a small voltage source which I'm using as a detector for power in another circuit. It connects to a microcontroller pin. Sometimes it's active when the microcontroller is not powered up, but ...
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esp32s3 lora + bme280 sensor
Im using t3s3 esp32s3 lora module and i have question can i solder dirrectly bme280 sensor and then redefine code or should i wire them separately on. And how should i know which pins are scl and sda ...
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Bidirectional Pin Handling In Verilog
I'm very new to Verilog coding, and I'm currently facing a problem with bidirectional pin handling.
I'll put the code below. In that, if mode is INPUT, I want to ...
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Is it possible to merge to Nexus T120 connections together? [closed]
A friend of mine recently was issued the 3M PELTOR™ ComTac™ V Headset for work.
They have a slick setup where you can connect each ear independently to a separate audio source so you can listen in to ...
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How to extract GPIO pin TTL ratings for this MCU?
I'm using a MCU board with this MCU and following pinout:
Now the datasheet is huge and I couldn't figure out how to extract an information I need. In my case, I use PA2 and PB4 pins as UART TX RX. ...
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Where is the first pin when a chip has a bar and not a dot
this chip has a bar as an indicator,
could you please tell how to locate 1st pin
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How to tell which pin is which on this toggle switch?
I'm working with 5646AB for my project. Can someone help me clarify which pin is which? I don't want to assume the top left one is 3 XD.
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What is the best way of 8-Channel 2.54mm relay's pin terminal connection?
Well while I am developing small project I'm wondering how to make pin connections for ready-made modules. Such as this 8 channel relay
it has 2.54mm male header on it. if use jumper cable it dont ...
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What are the VDDSD, VLXSD, and VFBSD pins?
On the STM32WB09KEV, and on MCUs in general, what do the VDDSD, VLXSD, and VFBSD pins mean.
I can see that they have something to do with SMPS (input/output, ground and output), but what do they ...
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Is a shunt jumper for a power plane jumper a good idea?
I am designing an experimental PCB. I have included a split rail DC/DC converter LM27762 on it. Since I wasn't sure it will work, for testing purposes I have included a 2x3 pin header for bridging the ...
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Help identifying hollow spring / inverted header sockets
I'm trying to identify the following hollow sockets which are used to interface with a 0.1" pitched header:
(source: US Digital PC5 Broadcom/Avago Compatible Incremental Encoder Cable Driver. ...
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Looking for a short sharp pin [closed]
I'm looking for a short pin with a sharp point, to be used for probing a circuit. Similar to a scope probe tip, but for a dedicated custom PCB.
Ideal length of <5mm, diameter of <1mm, solderable....
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Identification of a directly soldered PCB terminal pin 13.55 mm × 1.58 mm
I add in this question the picture of a PCB terminal, in this picture have the mesures of it. somebody can tell to me what terminal is it?
Thanks.
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The pin configuration of an RJ45 network connector Pulse J0G-0001NL
I have a few questions about whether I have pulled the right one for this RJ45 connector.
It's a Pulse J0G-0001NL and the pin configuration is below.
But note that if you look at the pattern, you ...
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what is this part/component in this circuit schematic?
I have a circuit schematic (this is just a part of it):
I am trying to find what those little circles above and below the speaker are. I dont think they are part of the speaker itself, as there is ...
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identifying component 12QF 65I COVQ
Can you please help identifying this component with top marking:
12QF
65I
COVQ
Device: an earlier 2020 revision of Xmos isolated I2S USB interface
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What is the purpose of the "REF" pin of LTC6915?
I am working with a LTC6915 and i don't understand what REF pin does.
That like V+ - V- + Vref = Vout?
Or something else? I don't understand the datasheet.
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Convert RS232 signal to USB
I have an optical amplifier that uses RS232 and I want to convert to USB. I've purchased this chip, also here. There is little documentation on this chip and the supplier hasn't responded to questions....
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Why is KiCad repeatedly re-assigning the Ground Pin of a row of resistors to some random pad?
I have run into an odd problem with KiCad, whereby a row of resistors has its ground pads re-assigned to some random pad. This happened with the central row of resistors first of all, which were ...
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PIC32 VUSB3V3 must be externally powered?
I use a PIC32 and I want to use RB11. That's a USB pin but can be used as GPIO.
The datasheet specifies in 18.4 page 180:
For non-USB operation with RB11 and/or RB10 as GPIOs, the USB module must be ...
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old YAZAKI PCB pins
I have a circuit board out of an old dozer that are not manufactured any more. I managed to have a new one printed up as my first PCB project and it works great but I soldered wires to the new board ...
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Potentiometer - confusion about arrow direction
In this schematic, is the left pin of the potentiometer connected to 6 and the middle pin connected to 7 or vice versa?
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PCBWay : Minimum SMT Width
Question
Is it bad design to alter the manufacturer-recommended VQFN footprint as follows:
• Pin copper width: 0.2 [mm] --> 0.3 [mm]
• Pin copper to copper spacing: 0.2 [mm] --> 0.1 [mm]
and if ...
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Which pin is pin #1?
Where is pin #1 on this IC?
It seems to have a line and a dot. The dot doesn't seem to line up with a corner pin though.
Chip is a INA210AIDCKR.
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Electrical automotive pin
This pin came out of a 08 Honda Accord. I have been doing as much research as i can but to no avail haven’t been able to locate this type. The only markings on it are “B1”.Any info on to what type ...
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Identify this connector and 2.5 mm pin type
Can you identify the connector type, and more important the pins?
I was able to find NPP 2.5 mm pins that look the same, but apparently they are smaller than what I need... I'm attaching some photos ...
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What to do with unused pins in PCB board of Raspberry Pi 4 Compute Module?
I'm trying to make a PCB board for Raspberry Pi 4 Compute Module and I will only use power pins, one HDMI connector pins, one USB connector and UART pins (Tx and Rx) only. The rest of the pins will ...
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Identifying a connection terminal specification from photo
I'm having difficulty identifying the 12 pin connection as seen in the photos below.
It appears to be a JST, but upon purchasing some 12 pin JSTs, they do not fit and are too big.
Is there a way to ...
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Looking to identify this 3-pin connector
These connectors are from a Blackburn X8SL mountain bike light system. The sheathing is rotting and I am looking for replacement wiring and connectors. I search for 3-pin IP67 type connectors and ...
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How much current can AS6C6416 static RAM data pins source?
I saw this video where the presenter uses static RAM data pins to source current to LEDs.
I want to try this, but I have AS6C6416 chip. My question is – will this not damage the chip? I checked the ...
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How to identify and repair what I need to fix this pin connector?
This is an 8-pin connector from a home generator and I need to re-attach a wire that was pulled out. The other side (pins) are attached to a control panel with fitting so I don't think I can replace ...
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Name of 16 pin male connector
I searched everywhere, but I don't know how to describe this black connector for google query. This connector has 16 pins.
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Ribbon Cable Pin Assignment
Preface: I am complete novice at electronics and this is my first project.
I am trying to connect two PCB together with a 10pin ribbon cable. The ribbon cables I made (and bought) are all showing ...
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ATmega - reading PIN defined as PORT
What value reads the ATmega328 in case:
DDRA = 0xff;
PORTA = 0x00;
pin_state = PINA;
another words, what is state of PIN if I/O is defined as output PORT and all ...
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Unknown female pins - solder cups
I am trying to replicate a female connector by means of 3d printing, using my own pins.
This is the connector that I want to replicate:
Just the inside, not the circular part that surrounds it.
If ...
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Shorting (connecting) two pads that are on opposite sides of the PCB
I have a PCB that has two rectangular pads on either side of the PCB, exactly opposite to each other. They need to be temporarily shorted (connected) to allow setting of some parameter through ...
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How does the OV pin protect against overvoltage?
This is the first time I've come across such pins on an IC. With a quick search, they are overvoltage supervisor pins hence to protect against overvoltage.
I was studying a power MUX TPS212x. The ...
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What is the reason that this RJ11 cable can't be connected to this socket? [closed]
I connect one end of this RJ11 to my router's WAN port, and I connect the other end of it to a 3-pin plug, and I connect that 3-pin plug to the phone jack, but when I try to connect the RJ11 cable to ...
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A question about pad footprint
I want to make a PCB for the pins of this unit:
So the pins at the bottom of the unit will be soldered to a custom PCB. In the bottom it is shown that the pin diameter is 0.5mm. When making PCB pads ...
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ST ROM Bootloader boot0 pin
How is the boot0 pin is intended to be used by ST chip designers in real world applications? Once the boot0 pin is set high, the chip executes the bootloader section in memory and it will not go back ...
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