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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.

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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 ...
YANNTASTIC5915's user avatar
2 votes
4 answers
622 views

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 ...
NoisyPCB's user avatar
3 votes
1 answer
104 views

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. ...
JorisL's user avatar
  • 33
0 votes
2 answers
57 views

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....
RockyRaccoon's user avatar
0 votes
0 answers
82 views

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.
GustavoSBelote's user avatar
0 votes
1 answer
26 views

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 ...
euraad's user avatar
  • 1,324
2 votes
2 answers
146 views

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 ...
Vincent Cerowski's user avatar
0 votes
1 answer
36 views

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
cserl's user avatar
  • 13
1 vote
2 answers
74 views

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.
DamanZ4's user avatar
  • 29
0 votes
1 answer
84 views

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....
andrewhunter's user avatar
0 votes
1 answer
68 views

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 ...
Hektor's user avatar
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0 votes
1 answer
45 views

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 ...
DamanZ4's user avatar
  • 29
0 votes
2 answers
81 views

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 ...
Naipalm's user avatar
1 vote
2 answers
74 views

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?
math_noob's user avatar
1 vote
1 answer
83 views

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 ...
kando's user avatar
  • 437
13 votes
4 answers
2k views

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.
Tim's user avatar
  • 345
1 vote
0 answers
80 views

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 ...
Wes's user avatar
  • 269
2 votes
1 answer
370 views

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 ...
Teodor Toshev's user avatar
0 votes
0 answers
58 views

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 ...
Ashish1313's user avatar
0 votes
0 answers
82 views

How to enable boot mode?

I am currently working with the Allwinner T113-I EVB SoC, and I'm encountering an issue related to the BOOT-SEL0 and BOOT-SEL1 pins. In the user manual for this SoC, it's mentioned that to boot from ...
savin poster's user avatar
1 vote
1 answer
53 views

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 ...
David jones's user avatar
1 vote
1 answer
126 views

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 ...
bioman's user avatar
  • 11
0 votes
1 answer
39 views

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 ...
Eugene's user avatar
  • 3
4 votes
2 answers
1k views

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 ...
canadianeh's user avatar
0 votes
0 answers
58 views

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.
Peter's user avatar
  • 101
0 votes
1 answer
91 views

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 ...
user3746283's user avatar
0 votes
1 answer
52 views

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 ...
Michal Podmanický's user avatar
1 vote
2 answers
107 views

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 ...
user1584421's user avatar
  • 1,369
4 votes
2 answers
650 views

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 ...
Sharan V K's user avatar
0 votes
2 answers
138 views

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 ...
Harkirat's user avatar
  • 121
0 votes
2 answers
159 views

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 ...
avdaad's user avatar
  • 9
1 vote
1 answer
57 views

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 ...
cm64's user avatar
  • 2,217
0 votes
0 answers
117 views

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 ...
KoS's user avatar
  • 1
0 votes
1 answer
155 views

MCU floating pins

You'll have to excuse my ignorance I'm learning as I go along. I would like to use a switch to toggle the state of the ESP32_EN pin in the schematic from high to low, however the pin can not be left &...
Paul's user avatar
  • 1
4 votes
1 answer
153 views

BASYS3 FPGA pin planning and configuration question

I have designed a basic 8-bit CPU that is mapped onto FPGA fabric on a Digilent BASYS3 development board. The DRC results in a few error messages that I do not understand, with one of them being shown ...
David777's user avatar
  • 1,555
1 vote
0 answers
58 views

USB 3.1 port wiring for charging

I'm building an USB charger with a linear PSU just for hobby and I want to install an USB 3.1 port so it can supply 900 mA max. If I only connect up the USB 3.1 port VBUS and GND pins, will the device ...
user avatar
2 votes
1 answer
878 views

What is pull up and pull down on a pin?

I am not getting clarity on how pull up, pull down, and GPIO values work. If a pin is input and pull up, does it make the value 1? If a pin is input and pull down, does it make the value 0? If the ...
confused_guy's user avatar
2 votes
1 answer
154 views

How to work with `WR` signal; incorrect datasheet for NEC FC40X2EA-AB VFD?

(Caveat: I'm a programmer, not an electronics engineer.) Edit: Fixed a misunderstanding, added better smallest possible sample code. I'm in the process of repurposing an old device containing a 2x40 ...
noughtnaut's user avatar
0 votes
0 answers
61 views

How can I get these pins description?

How can I get these pins' descriptions? I researched on the internet a lot but I couldn't find anything. Here is the datasheet PDF download link and website. I specially need camera control pins. I ...
Aiakun's user avatar
  • 1
0 votes
2 answers
165 views

I am designing a device using a MCP73871 and I am unsure on how to connect the status pins to the ESP32 MCU

I need a bit of help for my device schematic, more specifically for the status pins of the MCP73871. I am a beginner so I am trying to understand how to do it properly. The pins are PG, STAT1/LBO and ...
JediSpecter's user avatar
0 votes
0 answers
31 views

Can I use the Analog pins on Arduino micro as digital pins? [duplicate]

Can I use the Analog pins on Arduino Micro as digital pins? if Yes are there any Analog pins I cant use as digital pins on the Arduino micro?
Diya Al Deen's user avatar
1 vote
1 answer
60 views

SMD pin component tip? [closed]

I'm looking for something like a metal pin that could be assembled on a flex PCB. SMD or through hole. I want to use it to twist and then solder a thin (1e-4) copper wire to. What component am I ...
Alexander Ohm's user avatar
1 vote
1 answer
47 views

Question: MT8888 How are ‘Register’s setup; Read Status Register and Write to Control Register?

I’m using PIC18F2520 and MT8888C. The “Data Sheet” I’m using is Zarlink Sem. “Integrated DTMF Transceiver, with Intel Micro Interface”. I’m looking at page Figure 16, “Test Circuits”, the first test I ...
Rod Waits's user avatar
1 vote
1 answer
68 views

Can I switch left/right the pins usage of FS8205A?

I'm looking at FS8205A (Datasheet). To me as a hobbyist, it looks to be symmetrical, left/right. I'm going to combine it with DW01 for a battery protection circuit. Is there something that will cause ...
verbessern's user avatar
0 votes
0 answers
159 views

Back to back MOSFET for RF switching

I am exploring whether it is possible to reliably switch RF signals with a frequency close to 20 MHz using back-to-back MOSFETs (switching frequency around 200 kHz) with a common source to allow a ...
Allison's user avatar
  • 29
1 vote
2 answers
390 views

Is there a standard for mobile display connectors?

I want to build something using displays from old mobile phones, but I don't know how to search for some experimental connector/adapter that "magnifies" those small printed flexible pins to ...
Ketto Egy's user avatar
1 vote
1 answer
147 views

What is the name of this female connector pin?

I am trying to find in the market, some female connector pins. For reference, take a look at the pins in this SP13 connector: The yellow pins inside are the ones I am trying to find, although I don't ...
user1584421's user avatar
  • 1,369
0 votes
1 answer
729 views

Altium Designer schematic rename multiple pins' reference designators and names

I have two connectors, each with 52 pins. I am looking for a way to rename the second connector's pins with the following formula. Pin_Designator_new = Pin_Designator_old + 52 I know if I select each ...
iconradez's user avatar
  • 455
0 votes
2 answers
164 views

What do these different types of pin shapes mean?

Do these pins with different shapes have special meaning. Is there an industry standard for pin shapes and sizes? I have also noticed that some solder pads on boards are of Square shape and most of ...
Rohit's user avatar
  • 25
1 vote
1 answer
893 views

Declare a PIC pin in a variable [closed]

So basically, I want to store a pin of a PIC MCU inside of a variable. eg. int pin = LATB5 I also need to pass that pin to a function. If I do it like this, it ...
leo6002's user avatar
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