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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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
49 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
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13 votes
4 answers
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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.
Tim's user avatar
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0 answers
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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 ...
Wes's user avatar
  • 269
2 votes
1 answer
349 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
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0 answers
42 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
55 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
40 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
83 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
38 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
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4 votes
2 answers
914 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
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0 answers
54 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
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1 answer
77 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
43 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
105 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
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4 votes
2 answers
601 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
102 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
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0 votes
2 answers
139 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
54 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
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0 votes
0 answers
109 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
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0 votes
1 answer
123 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
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4 votes
1 answer
116 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
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1 vote
0 answers
51 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
510 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
116 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
58 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
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0 votes
1 answer
119 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
58 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
42 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
59 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
130 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
212 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
123 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
  • 1,349
0 votes
1 answer
472 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
  • 445
0 votes
2 answers
125 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
  • 13
1 vote
1 answer
700 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
  • 25
0 votes
0 answers
48 views

Help identifying 8 pin connector vacuum cleaner

Help identifying 8 pin connector please ! is it cable to motor vacuum cleaner samsung vr7000
Irimia Florin's user avatar
5 votes
2 answers
400 views

When the RS232 call is canceled, which pin transmits it to the DTE?

According to my research: When the call to DCE in the RS232 protocol arrives at the ring indicator (9) pin is activated and information is sent to the DTE. Let's say we talked for a while and we had ...
dmrmuhammet's user avatar
1 vote
0 answers
180 views

PCB header pins sealing

I am looking to seal the bottom part of this PCB header because I do not want the pins underneath the connector to be exposed to the environment in which the board will be assembled: https://www.te....
InsaneMonkey's user avatar
1 vote
1 answer
429 views

How can I connect those pins to jumper wires? [closed]

I have an nRF24L01 and I want to connect these pins with jumper wires to my Arduino but the module covers the right side of the pins and I can't connect jumper wires to them. How can I connect those ...
dagh's user avatar
  • 21
4 votes
2 answers
2k views

What is this electrical component called?

I have this part in my lab that looks like a chip holder with pins. I tried googling that, but nothing comes up. I am interested in this part and I was wondering if it comes with a lid, but I need its ...
Anwar Elhadad's user avatar
0 votes
1 answer
507 views

State of STM32 pins from factory and after chip erase

What is the state of pins for an STM32 MCU after chip erase or when the device is fresh from factory? I'm asking in search of a controlled way to power up and test a new board with STM32.
NoobPointerException's user avatar
2 votes
3 answers
124 views

What are these tension-fit electrical connections called?

Edit: I’m not specifically looking for TRS/audio jack fittings, or this exact shape, I just need angled metal connectors to make a compression fit connection I’m try to source just the tension-fit ...
tsdexter's user avatar
  • 147
2 votes
2 answers
362 views

How do I know what each pin represents in a Spice model of an op-amp in OrCAD?

I have imported a Spice model of an op-amp into OrCAD, but the part symbol is different from what I am used to, and I don't know what pins 4, 5, 8, and 11 represent here. Link to spice model I used: ...
user avatar
0 votes
1 answer
136 views

How to increase digital input pins of Arduino using 74HC574

I've been working on a project with an Arduino. I need to use many TCRT5000 IR modules and I'm out of pins. I also used a DC motor driver shield and it also took a lot of pins. Now I need to increase ...
Ali Ata Hashemi's user avatar
0 votes
2 answers
104 views

Confused by the STM32F101-LQFP48 power supply scheme in the datasheet

Recently I have started to learn about designing hardware with STM32. In the schematic side of the design, I got confused with the power supply scheme given in the datasheet since I have no prior ...
Berk's user avatar
  • 331
0 votes
1 answer
41 views

How to create a part in Eagle that consists of multiple other symbols? (with elements that share the same pin)

I'm trying to create an Eagle part for an IC which is an array of 5 matched transistors (eg CA3046/CA3086/AS3046D). Two of the transistors are a differential pair that share the same IC pin (pin3). I'...
Jon's user avatar
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0 votes
1 answer
86 views

Does anyone recognize such connectors?

These are the connectors used to power a 12V fan. I have both male and female ends attached. Does anyone know the name of it? I'd like to purchase a extension cable. It has 8 pins because there are ...
FlakR's user avatar
  • 749
0 votes
1 answer
34 views

What is the MCU-Pinmode equivalent of a button-press to ground in this scenario?

The more I think about it the more I confuse myself... In the attached circuit if I want to simulate the effect of SW1 (or SW2) closing to ground how do I set the MCU-pin? Connect to Terminal 2 of ...
TommyS's user avatar
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