Questions tagged [production]

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How to add 2 or 3 parallel Li-ion cells to my custom PCB

I've tinkered with electronics and components for quite some time now, but I'm kind of a noob when it comes to taking things to "production". I've this project using an ESP12-E, powered by 2 ...
webnator's user avatar
1 vote
1 answer
73 views

What kind of displays and processors are used in consumer electronic products (like a coffee machine)? [closed]

I am presently working on the development of a smart kitchen appliance, which will eventually be sold in the market. As part of this project, I need to incorporate a touch display for the operation of ...
santosh kumar's user avatar
0 votes
0 answers
32 views

Could 94-HB board be used for SMD and THT soldering?

I have a circuit that I designed lately which is quite simple based on just 1 opamp and have an SMD and THT components (like a relay) and will be producing mass production in Chinese factories and it ...
Hazardous Voltage's user avatar
32 votes
7 answers
22k views

How to ramp up a factory consuming a lot of energy?

Can you please explain how to manage the process of ramping up a factory with a big electric consumption? I am wondering how it is possible to balance the grid during the start up phase of a big power ...
Merlin Nestler's user avatar
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0 answers
63 views

Is this a functional and reliable Reverse polarity protection?

Guys, I am trying here to design a UPS controlling board, I designed this circuit and it was to some extent functional and it draws approximately 16mA - 20mA (I don't want to use the traditional one ...
Hazardous Voltage's user avatar
1 vote
1 answer
59 views

Best LCD for mass production

I'm designing a PCB that will be manufactured in small batches (a few hundreds). It will have a segment LCD with electronic components under it. I cannot choose between two form factors - with SMD ...
Archimedes's user avatar
5 votes
2 answers
616 views

Do EMC test houses typically accept copper foil in EUT?

Working with small volume product and tight schedule it might become an option to pass EMI limits by use of copper/aluminium foil on inside of enclosure. What is your experience with the labs on this ...
NoobPointerException's user avatar
0 votes
0 answers
123 views

What attenuator to use for using HackRF one to simulate GPS for in production testing?

I am trying to use the HackRF One to simulate GPS to test devices in a production environment. I am currently able to get the GPS signal on my GPS receiver that I am testing, but the signal is much ...
mgwalker95's user avatar
2 votes
1 answer
104 views

Include UUIDs in embedded firmware image

I do have firmware for an embedded device, which has several UUIDs in flash. The UUIDs have to change for every controller flashed in production. There is no EEProm available - only flash. I'm ...
ElectronicsStudent's user avatar
0 votes
1 answer
104 views

Washing of an IC

Can someone tell me what is the information regarding the process of washing the device during production? This question is with respect to the Microchip LAN8741A
user avatar
1 vote
1 answer
50 views

Can I trust a variable voltage step down converter to hold at a fixed voltage

I need a 70 watt capable 76 volt DC-DC supply. I cannot seem to find any readily available on the market, so I considering buying a step down converter such as the one pictured below and setting it to ...
Oscar's user avatar
  • 91
3 votes
1 answer
112 views

Using other boards than PCB for commercial electronics products

If one solders entire circuit components (such as resistors, caps, opamps) a board as in the following photo: Is this type of interfacing legal for commercial products? I'm wondering if there is any ...
cm64's user avatar
  • 2,059
0 votes
1 answer
122 views

Surface Treatment choice for edge connector

So I have an edge connector that according to Alibaba Chinese salesman has tin-plated terminals (datasheet a bit unclear). I am making a product where I am inserting a PCB into an edge connector and I ...
mannen's user avatar
  • 29
2 votes
2 answers
337 views

What is the meaning of the number after the comma in the product page? (e.g. BC547C,215)

Relevant links from Mouser and Digi-key: https://mouser.com/ProductDetail/Nexperia/BC847C235?qs=me8TqzrmIYWk6FelXF%2FgZA%3D%3D https://www.digikey.com/product-detail/en/nexperia-usa-inc/BC847CW-135/...
FrancoVS's user avatar
  • 1,523
0 votes
1 answer
115 views

When these prototype devices become commercialised/productionised, how is the signal processing aspect of the oscilloscope built in to the device? [closed]

I read a lot of research papers that use large and expensive equipment, such as oscilloscopes, to do their signal processing. Oscilloscopes offer high sampling rate and bandwidth, which makes them ...
The Pointer's user avatar
  • 1,241
0 votes
2 answers
101 views

THT components reliability and advantages for small scale production [closed]

Examining this question in the "manufacturing of not consumer electronics". I'm looking for an opinion by others about some statements that I take for correct. Are THT components in general ...
gino's user avatar
  • 489
7 votes
3 answers
2k views

Maximum Typical and minimum into datasheets. What is the distribution?

What is the probability of having a component with the minimum and maximum specified value into the datasheet ? I suppose this follow a normal law and the typical value is the mean : Have a nice day !...
Jess's user avatar
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0 votes
1 answer
122 views

How to determine if conventional electronics circuit is a better choice over a MCU?

I am a software engineer and have limited experience with conventional circuitry. Recently, I have built a prototype device that uses an Arduino Uno, a Bluetooth module, an array of temperature/...
Bryan A.'s user avatar
9 votes
2 answers
4k views

What does "Not recommended for new designs" mean in an ATtiny datasheet?

I am making my own circuit and I am using ATtiny10-TS8R (I couldn't buy any another type for now), but I found (6) in the datasheet on the part I want to use: As noted in point (6), it says "Not ...
M Y's user avatar
  • 229
0 votes
1 answer
63 views

Need help determining if a component is acceptable for use in a production design

For the sake of not going too broad, I am only referring to this single OLED LCD board component from Newegg being used directly within a prototype device that I have designed. My end goal is to take ...
Pholotic's user avatar
0 votes
1 answer
51 views

Need help understanding how motors, sensors and other components of a prototype design factor into certifications for industry sale [closed]

I have built a prototype and I now need to create a production prototype that I can use as my template for a small 10-15 product unit batch order. I am in the United States where I plan to market ...
Pholotic's user avatar
9 votes
7 answers
2k views

How critical is it to declare the manufacturer part number for a component within the BOM?

I've never seen a BOM that explicitly declares manufacturer part numbers for the components (except the obvious ones, like a microcontroller) in any kind of circuit schematics. According to my ...
ceremcem's user avatar
  • 1,396
2 votes
1 answer
106 views

Padding between USB and panel

Our product has a hole on the metal panel for the USB2.0 type B port. However, due to the mechanic size variation, on some panels, the USB connector can't touch the panel at all. As indicated in the ...
Ross's user avatar
  • 552
0 votes
1 answer
82 views

Evaluation kits explained

I am new to electronics and have been seeing a lot of so-called "evaluation kits" for certain MCUs. For example this Atmel SAM R21 Xplained Pro kit claims to be: "a hardware platform to ...
hotmeatballsoup's user avatar
0 votes
4 answers
490 views

Programming many Atmega328p at once for mass production

How can I program multiple ATmega328p at once? Like, for example, the Arduino Uno. How do they program it for mass manufacturing production?
user233061's user avatar
0 votes
0 answers
67 views

Quintic QN8007B RoHS information?

We are planning to use the Quintic QN8007B FM transmitter in our new design because it is quite cheap and has I2S interface. I believe this chip is no longer produced, but it is possible to get hold ...
JohnDonut's user avatar
  • 115
1 vote
1 answer
273 views

Best tool bits for PCB cut outs (board shapes and slots) when prototyping with desktop CNC milling machine?

I have a cheap desktop CNC that I have successfully done some PCB prototypes on using 10 and 30 degree 0.1mm V-bits. When it comes time to doing the cut-outs I started with a 1.5 mm end mill with four ...
norlesh's user avatar
  • 475
16 votes
6 answers
3k views

How do professional designs compensate for offset voltage in opamps?

I am new to electronics and have been told in class to always add precision potentiometers to compensate for input offset voltages in opamps for signal conditioning. My concern is that this offset ...
Daniel Vela Jarquín's user avatar
0 votes
1 answer
39 views

Project Considerations: From POC to Consumer product [closed]

I come to you for advice. I am a software engineer with some background in electronics, since I studied mechatronics engineering. However I would say that my experience with electronic projects has ...
luisgepeto's user avatar
1 vote
0 answers
105 views

Solder QFN88 by Hand

I just received my newest board i've designed and wanted to solder the first prototype. One of my Chips has a QFN88 Footprint. I'm quite experienced, but i just couldn't do it. Because of the small ...
felixlkunz's user avatar
0 votes
1 answer
152 views

Test-jig for the display system

We have a system in which is an HMI with a display. To test a system, I have to connect the LCD and six more cables to the board. As the LCD has an FPC cable, it will take more time compared to the ...
shafeeq's user avatar
  • 142
1 vote
1 answer
149 views

Hi Pot / Dielectric Pass/Fail Recording

I just graduated last year with an Electrical Engineering degree. Currently pursuing a Masters's Degree, so I am fairly new to design. We have several HiPot Testers we use on the manufacturing line. ...
QuantumElectro's user avatar
2 votes
2 answers
3k views

How dangerous is soldering? [duplicate]

Around six months ago, I did some light solder work in my room. I was pretty reckless with the lead solder, and even ate while soldering on several occasions. Should I be worried about the lead ...
jerrytrey's user avatar
0 votes
0 answers
792 views

Assembling helical antenna in production

How is small PCB mounted helical antennas (100 MHz - 1 GHz) assembled in PCB production? See picture below. I have thought about mounting it both horizontally and vertically, but I can not figure out ...
Alexander's user avatar
1 vote
2 answers
482 views

How can I program an SOC without a hardware kit?

I am new to the production side of electronics. I was wondering if I can directly use a DA14683 to implement a size-constrained project. I have a few queries in mind Is interfacing a SOC similar to ...
Bruce_wayne's user avatar
0 votes
1 answer
284 views

How large is the percentage of non-silicon materials in overall production capacity for semiconductors?

Most of all semiconductors produced these days are made from silicon, as it is easy and cheap to manufacture in very well researched bulk processes. But some electronic devices require the physical ...
jusaca's user avatar
  • 9,354
10 votes
4 answers
942 views

Do modern processors have redundancy in their logic units to compensate production faults?

Modern processors consist of billions of transistors and new production technologies often have problems with the yield, at least in the first months, but I guess that even after years there will be ...
jusaca's user avatar
  • 9,354
1 vote
2 answers
60 views

Product Safety Testing - EU

I was recently hit with the thought as to what safety tests a domestic electronic product has to go through before it is sold to consumers more specifically in the EU? I have been looking through ...
SimonPCB's user avatar
0 votes
1 answer
165 views

Sensing the higest reading from an array of NTC sensors

I have almost the opposite of this question: Multiple Parallel LED Drivers with Single Thermal Derating NTC Thermistor I have an array of devices which depending on operating condidion may run hot or ...
winny's user avatar
  • 13.4k
9 votes
1 answer
1k views

Name for soldering a PCB orthogonally into another? Vertical castellation?

(image stolen from OK to connect boards perpendicularly like this?) Is there a name for the production method where say a base board (horizontal) has a slot milled into it with the solder mask open ...
winny's user avatar
  • 13.4k
0 votes
1 answer
67 views

Transform small Arduino protoboard project in a final solution

I am collecting data on consumption and solar production and I centralize it in a Raspberry with Openhab. Now I want to connect to Smart Grid Ready and/or Power Control of a Panasonic Aquarea ...
lujop's user avatar
  • 101
12 votes
1 answer
1k views

Legal obligations when designing electronics

I'm planning on releasing a USB powered device, basically a AVR ATMega2560 µC with a FTDI FT232RL chip powered by USB-C. Although I'm comfortable with the safety of the device (has fuses, ferrite ...
Fed Nlanders's user avatar
0 votes
1 answer
194 views

Registering IOT products across Europe based on NodeMCU

We've been designing some smart home devices and softwares in past few years and they've been sold in some countries in middle-east. Basically, they were combination of ESP, Arduino and NodeMCU boards ...
Alex's user avatar
  • 103
1 vote
1 answer
117 views

I have an idea/invention and look for a real investor/industry to take it to the next level? [closed]

I checked many online resources/websites and all of them asked me to pay thousands of dollars to make it real! I couldn't find any one that says you don't have to pay and we will take it from here ...
user avatar
15 votes
4 answers
2k views

Using decapped ICs in production

We were looking for a very specific type of ADC in a small package for one of our projects, and found something suitable in a TSSOP. We wanted to save more space, so looked into getting bare dies; the ...
Jack B's user avatar
  • 12.2k
8 votes
1 answer
469 views

Do Soft Termination Caps Really Increase Reliability?

I'm managing several designs. At one point I identified a few failures that were caused by 0603 caps failing short. After that I switched to all soft-term caps to hopefully eliminate the problem. ...
Drew's user avatar
  • 6,452
10 votes
2 answers
2k views

How to manufacture chip on board?

I am a developer of a cheap product and i have no experience in mass production. Device is fully functional and represents a single sided PCB, a microcontroller, a bunch of diodes and a few passive ...
Sergio's user avatar
  • 340
15 votes
2 answers
410 views

Taking a device to market [closed]

I have somehow managed to make a little gizmo that primarily consists of an MCU, some sensors, and wireless connectivity. I have gone through the process of making the initial prototype, then designed ...
TrivialCase's user avatar
3 votes
1 answer
313 views

Watertight enclosures - what production steps are required to ensure no condensation on the insides?

Background We want to waterproof an electronic device and the specifications call for IP-65 protection. To this end, we have selected a sealed polycarbonate box to put the electronics in. The ...
anrieff's user avatar
  • 5,331
-3 votes
2 answers
208 views

Producing energy from lighting bolts

An average bolt of negative lightning carries a current of 30 to 50 kiloamperes, transfers a charge of 5 coulombs, and dissipates 500 megajoules of energy (120 kg TNT equivalent, or enough to light a ...
Edenia's user avatar
  • 159