The process of making the first working sample of a circuit, that may be on a temporary base like a breadboard

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3answers
74 views

Soldering SOT-23

I'm working on a DYI battery monitor project and the possibility of using an INA169 came up. That's a SOT-23 packaged component. I have minimal soldering skills so I'm looking for some advice: Can I ...
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1answer
65 views

Guide to effecient/neat circuit design (etch and proto PCB)? [closed]

I'm starting to delve into slightly more complex prototyped PCBs and (eventually) will be etching boards. All the guides I've read have been quite basic about the process, but I would like to know if ...
0
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1answer
50 views

how do you link components between them on a protoboard [duplicate]

I have the following protoboard (see picture below) Each hole has a distance of 0.5mm I want to link components between them. I found a few ways to do that: 1) Use tiny wires to connect the ...
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2answers
54 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 ...
-2
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3answers
58 views

5w resistor circuit and increasing circuit speakers power

I am new to electronics, and I am working on an amplifier circuit that contain LM386. This is the schema of it with bill of materials: Does this circuit give a huge sound ? If not, do I need to ...
1
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1answer
45 views

Making my own Breakout board for a GPS

I am prototyping a few things and wanted to make my own breakout for something that I haven't done before: GPS. (link to page) I know that high-freq. PCB are usually different compared to regular ...
3
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1answer
167 views

What are these pcb connector type pads for?

My picture shows a prototyping board that I have. Sorry that the contrast is not great, but there are two vertical rows of connector like pads down the left and right sides of the board. They are ...
3
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3answers
364 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
119 views

how to solder in this board [duplicate]

I have this board and it is the first time I work with it. How can I connect 2 elements in it, and how to solder IC with all the circuit lines that connect all the elements. EDIT
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1answer
69 views

is there a solderless solution for component with pins 1.70mm apart?

I have a CAT4101 http://www.onsemi.com/pub_link/Collateral/CAT4101-D.PDF constant current LED driver which has 5 pins at 1.70 mm BSC apart. As I am a newbie I would prefer to use only a solderless ...
0
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1answer
89 views

My prototype is done, how to go to the next stage? [closed]

I have a background in software and for a while now I'm building prototypes with open source hardware. I came to a point that I would like to produce one piece of hardware ie 'a device' from my ...
2
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2answers
73 views

Adjustable power supply simulator/reality

Hi im a student of computer engineering and im currently doing a project of a adjustable power supply it should be doing 0-30V but im getting some problems with the word adjustable haha,i got this ...
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1answer
147 views

Advice on precision CNC milling machines for PCB prototyping

I am an EE professor at an University and I was asked to provide a solution (machine) for PCB prototyping. Specs are milling down to about 8 mil (0.2032 mm) trace thickness, 8 mil trace clearance, 8 ...
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2answers
104 views

Could someone identify this old prototyping board?

A friend of mine had this lying on a shelf- he had found it while cleaning out his basement. Any idea what it is meant to slot into, or its purpose in general?
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1answer
159 views

Electret microphone into iMac 3.5mm TRRS headphone jack amplification

I have this electret microphone: http://www.farnell.com/datasheets/1505849.pdf And I've put it onto a 3.5mm TRRS (4 pole) jack to go into the iMac headphone jack. For the iMac to recognise/accept the ...
4
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2answers
355 views

What is the official name for these jumper wires?

This may seem like a very trivial question, but sometimes the naming of things (nomenclature?) can be important when discussing technical things. What is the official name for the kind of prototyping ...
2
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3answers
112 views

Can I make a double board at smart prototyping pcb service?

They have a 5x5cm minimum board size. My board is approx. 35x20mm so I can easily put two side-by-side and thus double the board count within this limit. What is the best way to do this? I know how to ...
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2answers
157 views

photodiode amplifier

I am a mechanical engineering student and I am working on a research project where we want to use a reverse biased segmented photodiode (OSI SPOT2DMI series) to detect deflections from a high speed ...
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3answers
114 views

Best solution for compact wiring on stripboard

When transferring a circuit from breadboard to stripboard, I often struggle to manage the wiring; often it starts looking like an overgrown garden; the components inevitably start disappearing under ...
3
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3answers
562 views

Making prototypes with high speed SMD components

Even today we have breadboard and strip board on which one can make "quick and dirty" circuits and also test prototypes. However, we have now moved into an era of predominantly surface mount ...
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1answer
85 views

Circuitry for the DRV8840 Motor Driver

I'm building a circuit based on the DRV8840 (datasheet: http://www.ti.com/lit/ds/symlink/drv8840.pdf). Unfortunately, I can't get it to work. I think something might be wrong with my design. When I ...
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1answer
73 views

SMT reel: taking a couple of parts off the reel

I have a couple of SMT parts that I ordered "digireels" for - i.e., essentially tapes wound around a spool, with some leader tape attached at the front. This is good for the pick and place machine - ...
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1answer
90 views

Transmit 12v power wirelessly

Is it in any way feasible, in a small form, to power a 12v light with a power source or transition source 3" away without any physical connection? ...
2
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3answers
440 views

Only one LED is working on this traffic light circuit

I have a problem with my traffic light circuit. I've made sure of the wiring and everything seems right but for some reason only the yellow LED is lit constantly without it flashing and the other 2 ...
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1answer
73 views

What is Stray Capacitance and how it can be Avoided

I have learned that especially in RF circuits stray capacitance can mess circuits up. I have learned that breadboards are a major culprit for this. However I do not know really what it is. What is ...
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2answers
673 views

How to solder IC to Perf Board

I just bought 5 boards from Allelectronics.com like this. I decided to make a circuit that involved ICs. When I attempted to solder the circuit onto the board I realized that once you solder the IC ...
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0answers
134 views

What to look for in a CNC PCB router?

When shopping for CNC routers for milling PCBs, there are some specific tools and others that seem to be fit but are meant for other types of works (typically engraving wood or advertisement). For ...
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2answers
165 views

How to break out SMD chips in-circuit?

For a current project I am attempting to amplify and cross-wire the signals from the address pins of SMD RAM chips. Basically this means I am trying to break out the pins of a SMD chip, similar to how ...
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2answers
151 views

Where can I buy or how can I make high quality jumper cables?

The jumper cables in my possession are all so stiff and seem cheaply made. The connectors fall apart and its frustrating. The jumper cable is such a simple but critical component - how/where can I ...
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2answers
95 views

How should I solder one board to another?

I have a small power regulator/charger and a IOIO-OTG that I'm trying to solder onto my protoboard. My current idea is to use male/male headers. Is there another way? What is the best practice when ...
3
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2answers
510 views

Why would uart connection only work after disconnecting power?

I am using a Microchip Bluetooth Pictail and a Sparkfun 3.3V USB-to-UART and a Arduino Uno (just for power-5V,gnd and 1 active high signal connected to 3.3V). When I power the PicTail it outputs ...
0
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1answer
160 views

Is it possible to measure acceleration in sports activities with an accelerometer

I've been trying to make a simple prototype capable of measuring a punch or a shot put throw with an accelerometer, but suddenly stopped working, and "locked" into a value, has I was testing it. When ...
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2answers
150 views

Panel-mount Solderless Connection for Prototyping Station?

I built a convenient prototyping station with a bipolar and 5V power supply in an enclosure, exposing binding posts for the supply and with a solderless breadboard stuck on with the adhesive backing. ...
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1answer
61 views

Looking for robust reversible prototyping solutions

I've recently started making use of Arduino and Teensy microcontrollers to build various one-off pieces of equipment for my work in a neuroscience lab. Often I find that, after a device has worked ...
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1answer
355 views

Am I risking a short circuit/gaping situation?

I am rather new to the DIY/hobbyist electrical engineering scene. I am working with an arduino, a 9V power supply, and a few 7805 voltage regulators. I bought some sort of run of the mill PCB board ...
3
votes
1answer
300 views

What are the contact pads near the ATmega32 chip on the Arduino Yun?

What are/What use have these pads near the ATmega chip? I thought they are used for testing or something else, they seems to expose the ATmega traces directly. Maybe they can be useful to connect ...
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4answers
277 views

Large Wires on a Perfboard

I am working on a project on Perfboard which involves controlling a motor that draws about 10A, and I am using 18AWG stranded wire to connect the MOSFET on board to the battery and motor which are off ...
4
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3answers
1k views

Manufacturing Microcontrollers for portable vaporizer by first prototyping with Arduino

This question I have mainly has to deal with approaching an electronics company with just a working Arduino Nano prototype. Say I want an electronics component manufactured which consists of an ...
2
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6answers
1k views

How to create an electronically controllable resistance to a physical movement?

What is the best way to create an electronically controllable resistance to a physical movement? For example, at the gym you control the resistance to movement by putting more load, more weight. Is ...
6
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1answer
1k views

How can I safely prototype a mains power circuit?

I'm building a device that has a mains power component, which I need to prototype before building to make sure everything works. I know I need to make sure wiring—and insulation!—is thick enough to ...
7
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3answers
865 views

Need help finding PCB components on DigiKey

I am looking at the TinyDuino Schmatics (PDF) and Eagle BRD/SCH from Tiny-Circuits (an open source project) to put together Bill Of Materials. I am interested in creating my own version of this ...
3
votes
3answers
212 views

How to connect 1.5mm SMT alternating pins to 0.1" pin header?

I have a toy I'm trying to rehabilitate - the microcontroller was fried and I'm attempting to replace it with an Arduino. It looks like the connections were at a SMT pin-pitch (1.5mm spacing). To ...
4
votes
3answers
990 views

How to make final good looking prototype of our project?

The handmade projects we make contain a lot of loose wiring and are actually bad looking products. So what should I do to make my product look better and that we can actually sell directly to people? ...
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2answers
195 views

Weird Behaviour with Bootstrapping Circuit

I'm trying to make a 3 phase BLDC driver and picked up some FAN7888s since they're inexpensive gate drives with all 3 phases on one chip. I read the relevant datasheets and application notes and ...
7
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2answers
2k views

Using copper clad for RF projects

As a novice reading "Build Your Own Transistor Radios" by Ronald Quan I was kind of mystified by the author's statement that using "vector" board would be easier than using prototype boards, but the ...
0
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1answer
781 views

L298N damaged? What to do?

I'm trying to control a DC motor with the L298N motor driver and it worked for a brief moment. I've used the setup mentioned in this video tutorial, but someone in the comments said that with this ...
2
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3answers
2k views

Designing for pick and place

I am thinking of using DesignSpark for PCB design and pass the files on for manufacture. If I want to miss out the soldering part and get the full boards made by a pick and place machine, can I use ...
4
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4answers
326 views

Electronics protyping and manufacture

I need to design and build an embedded piece of electronics based on a PIC microcontroller. I am assuming the process is: choose chip (PIC16F690) prototype code on PicKit breakout board prototype ...
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1answer
397 views

Prototyping for Bluetooth accelerometer

I'm a software developer looking to prototype an application that requires input from a 3-axis accelerometer, ideally via Bluetooth LE. Current specs on the accelerometer are +/-50G sensing range ...
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1answer
385 views

Circuit working in breadboard but not perfboard

I am making a circuit to unlock my car doors. The central locking in my car works with 2 wires one at 12V, the other at 0V. When the 12V line is pulled low, the door locks. When the 0V line is pulled ...