Questions tagged [production]

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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 ...
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1answer
124 views

60335-1 27.5 Test - Am I doing this right?

I work at company producing household appliances, and I'm looking into a way to test compliance with part 27.5 of the NEN-EN-IEC 60335-1 standard (which is derived from IEC 60335-1). It states (...
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1answer
417 views

Connecting Sensors To A Production PCB

Background: I designed a simple board a while ago using a ATMEGA328 and a ESP8266. The idea is that the ATMEGA deals with sensor data and the ESP8266 deal with the whole online bit. I did a initial ...
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2answers
64 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 ...
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1answer
177 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 ...
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1answer
239 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 ...
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4answers
276 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 ...
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2answers
30 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 ...
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1answer
30 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 ...
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1answer
44 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 ...
14
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1answer
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 ...
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1answer
107 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 ...
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1answer
92 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 ...
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4answers
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 ...
7
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1answer
146 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. ...
6
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2answers
3k views

Serial Number Generation

I am working on a product that will need a unique serial number for each device. Are there any "recommended practices" for serial number generation? Since I never saw a device with serial number 1, ...
7
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2answers
1k 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 ...
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2answers
334 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 ...
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1answer
160 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 ...
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2answers
150 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 ...
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2answers
232 views

Is advisable to drive an LED matrix using a Shift Register+FET on High side and an LED driver on the low side?

Trying to find the most economical way to drive 60 leds (~20mA) for volume production. Our main MCU doesn't have enough pins, so I2C or similar set up is needed and total budget of driving LEDS ...
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2answers
159 views

Is the maximum audible noise from power supplies regulated in Europe?

Power supplies make sometimes a lot noise in the range of kHz. Is there a regulation for the maximum allowed noise emission for consumer electronics on the European market? Is there a regulation ...
0
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1answer
123 views

Mass producing my electronics/raspberry-pi idea - What are the steps? [closed]

Could somebody tell me what the rough steps would look like? I think I have a good idea. I have put things into practice, and it's working and so on, but it's very ugly. I guess, first I would have ...
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2answers
117 views

Microcontroller with and without debugging features?

Out of curiousity, are there any microcontrollers which are available with and without debugging capabilities? I'm asking because I assume that the debugger is not a simple 'peripheral' in terms of e....
6
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1answer
295 views

Quantity less than one on Altium BOM

There are some items that goes on the BOM that, in production, apear as 1 for many. Example: large card box to package 10 boards/products. These kinds of items apear on the BOM as less than one ...
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1answer
83 views

Production programming: is there a practical size limit to serialization length? [closed]

This is a follow on question from the answers of these two: Is it practical for firmware to be uniquely identified in production How to verify hardware is legitimate I would like to be able to ...
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2answers
406 views

Why do PNP silicon transistors cost more to produce? NPN is cheaper?

I got a few suggestions/answers but nothing definite after searching and digging around awhile .. I am not so sure about any of these so correct any of them that you see Thanks Alex Van den ...
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1answer
101 views

Term for a guarantee a manufacture makes that a product will be produced for a number of years?

Sometimes manufactures of electrical components guarantees that a product will be produced for a number of years so you can rely on getting new components for future production runs. What is the term ...
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2answers
584 views

Serial programming of several AVR microcontrollers simultaneously via ISP interface

I'd like to put several PCBs in a panel with only one ISP connector routed to each MCU in parallel. I hope that it will be no problem that many MCU's outputs will be connected together as it is ...
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3answers
697 views

Advantage of series vs parallel battery in handheld product

There are many handheld product like laptop or an Handheld measurement equipment that all parts would works fine with 3.3V or lower VCC. However these devices still comes with a 11.1ٰV battery or ...
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2answers
2k views

How are through-hole boards mass-produced?

I'm familiar with the manufacturing process of surface mount boards. Chips come on reels (very high volume smaller parts), trays, or tubes. They are loaded into pick-n-place machines. The PCB, with ...
2
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1answer
1k views

Why are EI-cores (shell-type) most common for power transformers?

I notice that most small power transformers (single-phase, 100-240V, 50hz/60hz, laminated core) are shell-type, with an EI-shaped core. But as I understand they have relatively low efficiency due to ...
2
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1answer
220 views

Estimating Assembly costs II

This is a continuation of Estimating Assembly Cost which has addressed some approximations in estimating between North American and Asian assembly houses as price per pin. The question does not ...
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5answers
2k views

Can a generic 2.4 GHz transceiver be used on an 802.11x network?

I am prototyping a potential future product, and I am struggling to get my head around the complexities of using Wi-Fi components in it. I understand that Wi-Fi (or 802.11x) is primarily just a 2.4&...
0
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1answer
365 views

Chip masking process…what can be changed during the process?

I'm working with an overseas vendor. We've tested the electronics and code of the product. We gave them the green light to start chip masking. However, a few days later we realized that the working ...
2
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0answers
2k views

Why don't I see the esp8266 chip in many commercial products? [closed]

I am a bit of a novice in the field of RF design, and I was looking around for an RF module to use in a project. I kept on noticing the ESP8266, which is pretty popular with hobbyists, but it's ...
0
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2answers
155 views

What connectors are best for mass production? Is it cheaper to not use connectors at all?

I'm in the middle of designing a circuit with hopes of going to mass production (> 5000 units). I'm trying to think ahead in my part selection a little bit for reliability and cost effectiveness. My ...
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6answers
617 views

How to prevent sealed in product battery drain on store shelf?

How can a microcontroller-based device prevent battery drain while the product is on the store shelf? We are creating a waterproof, sealed in product without any buttons. This means the battery is ...
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1answer
104 views

Baking 0603 Components

I have a few 0603 LEDs that come with the instruction to bake them if they had the chance to draw moisture. What is the best way to do that? Can I leave them in the tape, so I don't lose the ...
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2answers
178 views

Reliability of edge connectors for production

I'm looking for an 6 pin .1 standard edge connector to program for production my board without any connector. And I cannot find the number of cycle they can support. Does anyone has used such ...
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2answers
232 views

Reduce BOM Lines or reduce BOM cost? How to make production cheaper? [closed]

We are designing a product that will hopefully sell many thousand units, and now I am at the stage of specifying what parts to use. We require three inter-board connectors, one with 10contacts and ...
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2answers
88 views

From prototype to printed board - who does the translation from wired proto to circuit board [closed]

The question is broad, and I am sure that there is more than one way, but the generic sequence should follow a common pattern, and that's what I am looking for. I basically would like to move from ...
70
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10answers
14k views

Why did LEDs take so long to appear as light bulbs?

LEDs are an old technology, why did the industries take so long to put them into light bulbs? Was there any technological gap missing?
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3answers
2k views

Replace SOT-23 (5 pin) package in production with wire

I have found a hardware bug on a board design after many PCBs have been manufactured but not populated. I can fix the problem by removing a SOT-23 component and putting a wire across two of the pads. ...
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2answers
473 views

From Proof of Concept on BeagleBone to Prototype

I've been developing a project with a BeagleBone Black and some other accessories connected to it as a proof of concept. Now, I wish to create a Prototype on my own leaving the BeagleBone behind, with ...
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3answers
833 views

How do I simplify microcontroller-based prototype into a sensible production-like circuit?

First some context: I'm an IT person by trade, and I dabble in electronics as a hobby. I have rather limited experience - apart from some toy circuits I've only made a single "production" quality ...
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2answers
5k views

In production, is there a significant difference between QFN or TQFP components other than space?

When producing a run of PCBs, does it matter if I choose QFN or TQFP components? Say, I want to have 1000 boards manufactured with an Atmel AVR that is available in QFN or TQFP packages. The QFN ...
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1answer
123 views

A sleeping mcu in a product -sent by air to?

This might be strange, but i guess you guys electrical engineers are the only one that knows that . Our MCU is turned on by a push button . That means he sleeps most of the time, and when pushing the ...
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4answers
3k views

Light effiency or efficacy and watt to heat output

I am on a light forum and there are debates about watt heat output of lights. I'm using my common sense for the debate but can't find the data online to support my ideas. People are thinking that ...
0
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1answer
2k views

How to take a raspberry pi project and get it mass produced [closed]

I was wondering how can I take my project that I have done with a raspberry pi and convert it to a PCB for mass production. My project is an e paper display that is attached to the raspberry pi in ...