Search for Breadboards in Topics


This is some of my breadboard circuits. I just got it in the mail so this is my first project. Its not supposed to be anything it just looks cool when its lit up.

Topic by DELETED_Nicker987    |  last reply

USB breadboard

Whats the best way of connecting a USB typeB pcb mount socket to a beadboard?

Topic by daveob    |  last reply

Breadboard (again)

These are some new pics of my breadboard circuits. I also have figured out how to wire my 7 segment LED.

Topic by DELETED_Nicker987    |  last reply

Breadboard Alert!

I'm not sure how much they normally run for, but sciplus has breadboards for sale for 4 and 8 dollars. You can use them to prototype your entry for the LED contest!Check it out!

Topic by Weissensteinburg    |  last reply

Breadboard things? Answered

I have this really old microcomputer thing (ET-3400), my dad found it at work a few months ago and gave it to me. I never figured out how to work it. But that's not what I'm after: It's got these temporary connector things on it, like a breadboard thing with four holes. I don't know what it's called, but I put a box around them in the picture. My question is is there a place I can buy some of these? A website or something? And what the hell do I call them? Thanks in advance.

Question by mrmerino    |  last reply

Breadboards, componenets, and hot glue

Hey all... I i have a breadboard for a small circuit and it has all the regular componenets such as transistors, resistors, diodes, realys, microchips, etc.  I will have the breadboard in a plastic project case and it will be mounted vertically...  I need a way to secure the componens int eh breadboard better so i waas wondering if i can use hot glue...???  I knwo some components such as the microchip is heat sensitive when solidering but i didn't know if hot glue got to hot or if tehre would be other effects to teh circuit in some way...??? Thanks for the help...!!!

Topic by SummitSeeker    |  last reply

Large cheap breadboards?

I need some large breadboards for free or very cheap. Is there a company that gives free samples, or someone here who has some they don't want? I also need a way to cut them.

Question by XOIIO    |  last reply

MyDAQ breadboard help

I’m taking circuit lab and was told to get a MyDAQ and a bread board so I got a Normal breadboard. I was wondering if any one would be able to help me make my bread board look like the one everyone else got for there MyDAQ (the ones they got r easier to

Question by KevinAzcuy    |  last reply

Music playback with breadboard.

Hello all. I want to create a simple music playback device. I wanted to be able to program a couple simple songs (MIDI format?) and when it receives an infrared signal, it begins to play through small speaker (small enough to hear about 10 ft. away). I was thinking this could be done through a breadboard. I am familiar with using breadboards but everything else I will need explained well. I appreciate any help I could get. Thanks.

Topic by TimArchy55    |  last reply

Breadboard Circuit for a servo?

I am looking for someone that can tell me what to do on a basic electronic breadboard (what timer, resistors etc) to be able to create a circuit to drive a servo. Basically i am an over ambitious art student that wants to use a a servo on a timer to alternate between 0 and 90 every 5 seconds or so (i haven't decided what time i want it to be but figured i could adjust it?) I am learning about these things on a DIY basis but as i am short for time i want to get it sorted. Any help would be appreciated.

Topic by GF88  

Odd Breadboard Question

Hi All  I am brand new to hobby electronics and would love one day to be able to create the endless amount of cool Instructables but I have ran into a problem on my first attempt at putting theory into practice and would really appreciate any help. I have made two diagrams / images showing the circuit I made I have attached them to this post. I am using an Arduino Uno as a power source.... I ran a 5v positive from the 5v pin on the Arduino using solid core jumper to the top of the breadboard onto the positive row / rail and a negative / ground jumper to the bottom of the breadboard. In the middle of the breadboard I placed a 1k ohms resistor bridging the gap / grove/ divide and ran the positive feed through it and on to the anode leg of the LED. The cathode leg of the LED was connected to the negative row / rail completing the circuit. All works as it should because of the high resistance from the resistor the LED barely lights and is green as it should be. So without using a multimeter I know and can see the resistor is clearly working. However if I move the resistor so it's still on the same line / row as it was but no longer bridging the gap the LED goes super bright and turns yellow which means that the resistor is no longer working which I can't figure out why because I know there is definitely current flowing through it given the extreme reaction of the LED. I vaguely remember reading somewhere on these forums that Fritzing is not liked very much so I hope no one minds but to help explain what I mean above I have created two diagrams / pictures using Fritzing. The images diagrams shows the resistor "bridging" and working and the other shows it not bridging and therefore not working. So my question would be why given the resistor has current flowing through it does it not work unless it's bridging this middle divide / gap / grove? It makes me think I am missing something really stupid that everyone should know about breadboards but just seems really odd to me. Many Thanks Rab

Topic by belfastrab    |  last reply

Should I buy a breadboard? Answered

Half the stuff i make fails so should I buy one? And want are the benefits?

Question by TNEN    |  last reply

make your own breadboard?

Is there a way to make your own breadboard? could you get 2 pieces of thin balsa, drill appropriate holes insert a layer if tinfoil between them? how do you do it???(if there is even a way) thanks for any help i receive regarding this topic

Topic by ledzep567    |  last reply



Question by Muna ATALLAH    |  last reply

How should be a good beginner BreadBoard? Answered

I want to buy a breadboard, but I dont know how many rows it needs, how many holes, should it have power input and ground, does it needs to be very large? Also how much should I pay for it ?

Question by Patented    |  last reply

FT232RL+breadboard arduino programming problems

I am trying to program a breadboard arduino with an ft232rl programming adaptor that I found online. I made the 'duino using a atmega 328 preloaded with arduino uno optiboot from sparkfun. I attached 5volts power, 16mhz crystal, reset button, and an led to pin 13. When power is supplied, the led pulses then stopps suggesting that the bootloader is working correctly. I then connected a ft232rl to the arduino with rx to tx and tx to rx as well as the DTS pin to a 0.1 UF cap and to reset. Then i connected it to my computer via usb and installed the VCP drivers. It shows up as a com port in the IDE and I selected the board as an uno and tried to flash the blink sketch. The lights on the breakout blink, but i keep getting the avrdude not in sync message. I have tried switching cables, usb ports, pressing the reset button while programming, i have gotten rig of the 0.1 uf cap and jumped directly to DTS, i have tried both sets of drivers and have restarted the board, my computer, and the IDE as well as feeding a separate 5 volt source to the chip. How can I fix this? I am using windows vista SP1 with ide version 1.0.1 and a cheap programmer from ebay. 

Topic by qquuiinn    |  last reply

On the breadboard Arduino, what's the difference between that and the duemilanove? Answered

What exactly is the difference between making the breadboard version found on arduinofun in thier kit, and the duemilanove? Besides the usb part?

Question by volkermord    |  last reply

Are Printed Circuit Boards and Breadboards the same thing?

I bought a printed ciruit board from radioshack and i am worried that it is not going to work like a breadboard. Will it?

Question by schoonovermr    |  last reply

Can anyone make a breadboard layout for this schematic? Answered

This is a stun gun. there's also a video( ) but it would be easy if someone made a breadboard layout

Question by Hafiz Mohammad Shayan Tariq    |  last reply

Looking for Eagle file for standard breadboard power.

Hello;   I am trying to find an Cadsoft Eagle .brd file. I want to plug boards into a standard breadboard, for power. I want to plug onto the thin side. It seems to be a metric measurement, even though it is 0.1" hole spacing. Or if someone has the spacing info for the pins? I measured 4mm on centre, then 40mm to 51mm for the far row. So it would be on the left or right of the breadboard. I always round ground at the outside, and 5v in the middle. So swapping ends will work. Thanks, and I will keep looking Mick M

Topic by MickM  

Is making a speaker with an amplifier on a breadboard a good idea? Answered

Is making a speaker with an amplifier on a breadboard a good idea will it create distortion can it function properly ps. Ill be using an lm386 and an 8 ohm speaker thanks

Question by TheGreatResistor    |  last reply

Is it possible to control the pictured connectors through a breadboard? Answered

Hi there! Simple question: how do I control the pictured connectors? For an electronic project I'm recycling a keypad from an old nokia phone and this is what the datalines look like. So what's the best way to control them through a breadboard? They're so small, there's not enough room for soldering without touching 2 or 3 copper strips at once. (the total width of the strips is about half an inch) Is it uberhaupt possible to connect to these in a DIY hack-project? Thanks!

Question by Dyte    |  last reply

Can someone make a breadboard layout for this schematic? Answered

I already have a pulse detector module.. simple with LED and photodector.. It has 3 pins: VCC, GND and one ouput(from photodetector) as signal.. I want to amplify the signal using op amp LM324 i have the following resistors available: 10Ω、22Ω、47Ω、100Ω、150Ω、200Ω、220Ω、270Ω、330Ω、 470Ω、510Ω、680Ω、1KΩ、2KΩ、2.2KΩ、3.3KΩ、4.7KΩ、 5.1KΩ、6.8KΩ、10KΩ、20KΩ、47KΩ、51KΩ、68KΩ、100KΩ、 220KΩ、300KΩ、470KΩ、680KΩ、1M and following capacitors 50V 2.2UF 100V 10UF 50V 10UF 16V 100UF 16V 47UF 25V 33UF 50V 1UF 16V 220UF 50V 0.22UF 50V 4.7UF 50V 0.47UF 25V 22UF

Question by Rahul27    |  last reply

Needed: a trick to debug a circuit on a breadboard - (The Spaghetti Incident)

The situation: I'm prototyping a circuit with a 14-legged logic IC on a breadboard. What happens: The picture tells it all: The breadboard looks like a Spaghetti Incident. What a mess. It's hard to find the right holes between all the leads sticking out, and avoiding shorts is even trickier. And of course: The circuit doesn't work. Not suprising considering the chaos. No biggie, but debugging a circuit on such a breadboard is a real pain! So please: Share your tips / tricks / magic to keep a proper and readable circuit on a breadboard. Thanks! Ynze PS: The circuit is not very complex btw. It's a solar engine, with one logic IC (NAND gates) and about 15 other parts. The circuit does contain feedback loops, which make it a bit trickier...

Topic by ynze    |  last reply

can you use a proto/breadboard to make an ARDUINO?

Simple as the header says. can you make an Arduino mini computer(First picture) from the various necessary components, and a solderless proto/breadboard?(Second Picture)

Question by ashannon1    |  last reply

What's a good program that allows you to convert electric circuit schematics to breadboard drawings automatically?

I have very little experience with working with breadboards. I've read tutorials about using them but I want to know if there's a program that could convert any electric circuit schematic I make into a breadboard equivalent automatically.  After all, it would be nice to be able to work with my stuff on breadboards & achieve results, not put in stuff & find out it's not working because I don't know much & how to fix it.

Question by mosquemouse    |  last reply

Update letter fault

I got an update that an instructables member( that I was following) had posted this topic.  When I clicked on the link I got : ERROR 400: no topic, How-to-create-breadboard-images - ERROR 400: no topic, How-to-create-breadboard-images This is the link:

Topic by sidgupta    |  last reply

Should all grounds go to the same negative bus on a breadboard? Answered

Whenever I see circuit diagrams they just show a ground off some components. When I'm designing on a breadboard should all of these go to the same negative bus on my breadboard in order to function properly? I've got one positive and one negative on each side (standard 6" Radio Shack model). Also, I would assume that a series circuit would be for those instances when you have no negative bus at all and need to ground back into the power supply as well? Thanks!

Question by giantjamsandwich    |  last reply

How do you set up a power switch on a breadboard?

I figured you just run the battery's ground to ground, then have the positive from the battery in a row on the board, then you would switch this to your rail. The problem is that the battery got HOT as hell in a minute, so I must be doing something wrong. Took a peek at another device and it looks like the switch is actually switching ground... what do I do? My switch is a little vertical slider switch that has two positions, and three leads represented by black, red, then green wires.

Question by prismspecs    |  last reply

(newsletter) Ambidexterity, Breadboard Tips, All-Weather Bike Helmet...

Jan 29, 2009 Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; }"/newsletter/newslettersignup?email=" + src.value,"newslettersignup1","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); } Welcome back! The Craftsman Workshop of the Future Contest winners have been announced! See who won the $20,000 grand prize, and the $500 runner-up prizes!Have some nagging issue that's holding up your latest project? Check out our new Answers section and tap into the Instructables community's pool of knowledge! It's cold up here in the northern areas and we want you to show us some great ways to fight the chill in the Stay Warm Contest. Win a brand new sleeping bag!These are the final days to reuse and recycle a plastic bottle for the Tap'dNY Keep the Bottle Contest. Enter by Sunday night to win a Voltaic solar-charging backpack! Leyden jar of DOOM! by nickademuss Build Buoys from Plastic Bottles by Patenteux du Nord Make a Postal Scale from Old CDs by Phil B LED-Paper Craft Lamps by mike_b See who won! Closes for entries this Sunday! Recycled Plastic in Plane Design by petercd Wine Bottle Lamp by reclaimagination Convert a Generator to Run on Propane by Rainh2o Ten Breadboard Tips and Tricks by klee27x Turn a Laptop Screen into a Mirror by MidnightSon Make an Easy to use Tape Dispenser by Creativeman The Quest for Ambidexterity by Mother Natures Son Make a Lego Valve Stem Cap by imaseahawksfan Share your best way to fight the cold and win a sleeping bag! Check out our latest feature! Make Home Energy Improvements with the Government's Help by zieak DIY Choreographed House Lights by prabbit22m Real-time Web Based Household Power Usage Monitor by jasonT All-Weather Bike Helmet by jeff-o Now go make something awesome, and I'll see you next week! - Eric Sign-up for this newsletter: function openSubscribePopUp(src){ var emailValidate = /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/ if(emailValidate.test(src.value) == false){ alert("Please enter correct email"); return; }"/newsletter/newslettersignup?email=" + src.value,"newslettersignup2","status=yes,scrollbars=yes,resizable=yes,width=420,height=250"); }

Topic by fungus amungus  

DIY IR Droid Module - 3.5mm to Infrared - Breadboard Prototype

Hey guys, I figured since I had grabbed so much great information from you all  I might try my luck with a little more! ;-) I have built this on my breadboard, powered with 6V 150mAh AC-DC converter. First connect saw at least one of the LEDs flicker dark orange and then go out. Assuming this means I burned it out, as afterwards I didn't notice any response. To prevent burning IR LEDs, I'll use visible LEDs, but I'm still concerned that my breadboard has a mistake. I'm pretty much worthless (but willing to learn, at least outside of the classroom setting!) at Phys II, so the debugging is foreign to me.  Pulling out the multimeter... What process should I be using to confirm that everything is powered correctly? The schematic is attached if you would like to customize your response to the hardware, but a general guide to debugging amplified LED circuits would be much appreciated as well! Additionally, if amplification the best way to go? How about a relay? Does that not offer the same (not Phys II...) amplitude? Smaller the better! Source List: - Schematic - Attached PDF - PCB Creation - - Mounting plan - Thanks in advance! Andrew Oh, and I'll post a picture of it within the week to get another set of eyes. I must confess, it is a little ratty...

Question by JustUnicycle    |  last reply

Begginer electronic projects

Here, I will upload project schematics for different simple breadboard projects. For these projects you will need a breadboard, jumper cables and different electronic components, such as LEDs, potentiometers, and more. Thank You!

Topic by Detectingdragon777    |  last reply

I will paypal someone $10.00 dollars to draw this in breadboard fashion for me!

Hi, I really need help. I've been working on this dern motion detection alarm and am having problems with the delay circuit. I think I have assembled it right and it never works. I have completely re-done it twice! What it is supposed to do is once power from the relay is sent to the 555 timer it will impose a 1 minute delay before sending the power to the alarm/horn. This gives owner adequate time to enter code to disarm. The relay part of the circuit works fine and sends power to the 555 timer and latches as it should. However, the 555 timer never sends power out of pin 3. Could someone please, please, please draw the attached schematic in breadboard fashion so I can double check everything is assembled properly? I would really appreciate it!!! Anyways I will paypal someone $10.00 dollars to draw this in a breadboard layout for me!

Topic by swilus    |  last reply


Program codes for ATmega8 digital temperature sensor

Question by SangeethS    |  last reply

FREE Schematic publisher(also includeds breadboard and PCB view)IN ALPHA

I did a search and didn't see it on this site anywhere, but I see a huge need for a number of the members here to be able to draw schematics and even simulate a breadboard or PCB. This software is free(but it is still in ALPHA testing). I have no affiliation with this site so I can only answer questions about usability from my opinion. For what a lot of people need on this site to help make "instructables"  that have electronic curcuits in them I think this is perfect. Especially if you can't afford high dollar software, plus if you're not an electronic engineer this software will teach you proper terminalogy and proper drawing designations as well. From what I know, all parts on the program are editable. So if you need a green 3.6v LED you can edit the one that comes default on the program and save it in your tool kit and use it for another project later. Hopefully everybody sees this. If the Mods know of a place to put this where it may be more accesible and visible to everybody here, please move it. Here's the link to find the software. They have it for Windows, Mac OSX, Linux 64 and 32 bit Enjoy PS, don't forget this software is in Alpha, so contact the devs and tell them if you have problems or you'd like to see changes

Topic by navyredman  

(You probably get these all of the time) I need help with a schematic! Answered

I'm sure the instructables community is going to facepalm when seeing this, but here I go. I wanted to make this It is a lie detector that is supposed to be done using a kit. However I wanted to try my hands at breadboarding so bought all the parts and a breadboard instead. I have looked everywhere, and all I am able to find are indexes of common schematic terms or pictures. If anyone would be willing to help me I would be forever grateful. I have knowledge on how to use a breadboard, and I have made simple LED circuits using a resistor. But when you start having to connect multiple parts to a bus I get lost. Thanks in advance!

Question by soapdude    |  last reply

Can someone help me set up a signal amplifier on breadboard?

I want to make a simple pulse sensor using this module for arduino see picture I need to set up a signal amplifier before visualising etc I need the community's help to set this up given Im a newbie the circuit is given below I need a Fritzing diagram plz  the resistors i have are 10Ω、22Ω、47Ω、100Ω、150Ω、200Ω、220Ω、270Ω、330Ω、 470Ω、510Ω、680Ω、1KΩ、2KΩ、2.2KΩ、3.3KΩ、4.7KΩ、 5.1KΩ、6.8KΩ、10KΩ、20KΩ、47KΩ、51KΩ、68KΩ、100KΩ、 220KΩ、300KΩ、470KΩ、680KΩ、1M the capacitors i have are  50V 2.2UF; 100V 10UF, 50V 10UF; 16V 100UF; 16V 47UF, 25V 33UF, 50V 1UF, 16V 220UF, 50V 0.22UF, 50V 4.7UF, 50V 0.47UF 25V 22UF

Question by Rahul27  

Is it possible to make a Beowulf Custer with Arduino?

Is it possible to make a small cluster computer using Arduinos? It has been done with Pi, but could it be made with breadboard Arduino? I read about I2C and it seems viable. Anyone had tried it yet? Awaiting some reply Trace

Question by Tanmay Das    |  last reply

Arduino Nano Every Question

I'm going to have Arduino Nano every receiving power from a breadboard, how would I wire up the gnd? The breadboard has one of its ground rows grounded, what pin could I just plug into that, if possible?I also need a wall connector for that. I'm not entirely familiar with the concept of how volts work and what-not, but does anybody know a 12v wall connector that I could plug into the breadboard for the Nano Every and 3 12v LED strips to draw power from? Would I have to convert a greater amount of volts to 12v to leave enough power for everything?

Topic by MadhanGomes    |  last reply

How can I build a Voltage control circuit?

I want to build a circuit that has a Potentiometer, a switch, and a three digit display, that will give out a voltage of between 0.1-24V so that I could connect it to my breadboard. I'm not an electrical engineer (yet) so I don't know how to build it myself. Can someone give me a schematic?

Question by yonch    |  last reply

Looking for advice on panel mount connectors (something like banana plugs)

Not sure if Tech is the right place to post but it seems appropriate. I have been doing some breadboarding lately and in an effort to clean up my work I plan on making a box/panel with several commonly used components (potentiometers, audio jacks, DC jacks, other sockets). I would like to have some sort of quick way of connecting these components to a breadboard. I saw a post here in instructables on how to make Banana plug to breadboard pin jumpers. The only problem I have with this solution is that all of the panel mount banana plug jacks I can find are fairly pricey and somewhat bulky for what I want. Does anyone know of something like a panel mount breadboard socket? The components I will be using will have anywhere from 2-9+ wires coming from them so I would like a way to have some sort of socket or connector mounted with the component and use wires to connect to the breadboard only when the component will be used (as to avoid lots of excess, unused wires coming from my panel). A source of cheap banana plug jacks (female, panel mount) and crimp on male plugs would help as well, if I cant find another option.

Topic by jdavis-9    |  last reply

FM transister

How to build an fm transister on an breadboard. I am a class 7 student . and science exhibition is near pls help me

Topic by 2illickans    |  last reply

Is there a trick to saving money on breadboards, ICs, chip programmers (the devices, not the people), etc.?

I used to have access to a lot through the EE program and just in general, through the university I was at for 8+ we're on an extremely tight budget, and I'd just like to figure out ways of getting parts for projects without having to come up with much/any cash. Any suggestions will be much appreciated!

Question by sykotik    |  last reply

Why this led circuit doesn`t work? Answered

Hi everyone, you see build this infrared-led circuit for a school project (am 16 and not in america so sorry for missespells, like that, pretty sure that missespell is not the word) This are the parts: Breadboard 3v Led 3v Ir receiver (with 3pins) Switch Jumper wires Can please tell me why doesn`t work??? What i miss?? Above some pictures.

Question by Ik0    |  last reply

Why wont this led flasher circuit work?

I recently made an led flasher circuit using a 555 timer on a breadboard. The instructable I used was this: I made the whole thing on the breadboard, it worked. (I used a reed relay instead of a switch for the power, so i could use a magnet to turn it on and off and it worked). Then I took the circuit and transferred it to a circuit board. I made the first part, with the one led that just lights up, and when I tested it, it didnt work. I checked and made sure power went through all of the objects, and it did. The breadboard circuit I used a 5+ power supply, on the circuit board I used a battery holder (That holds 4 1.5 batteries) to get 6 volts. (I used 6 volts with the breadboard circuit, too) I used all the same pieces, tested the led and it worked, but it just doesnt work. Here is the circuit drawn on paint (As it is on the circuit board):

Question by 101yummYYummy101    |  last reply

what is the easiest way to switch the voltage of a small motor with a switch?

Ive got a dc battery and some breadboard. do i need anything else for it?

Question by trogfield    |  last reply

Uploading to ATmega328 with preloaded blink sketch through ArduinoISP doesnt work?

I'm using my Arduino Mega as an ISP and have successfully uploaded a blink sketch to an atmega on a breadboard, with the led @ D13. Thats the SCK pin, and now i cant upload another program to the atmega on the breadboard. I tried resetting both the boards JUST before uploading, but it didnt work. my connections are secure, reset pin is tested, auto-reset is off. im at a loss. Please HELP!!!

Topic by DangerousTim    |  last reply

How to troubleshoot a pir sensor?

Hello I bought a pir sensor off ebay (SKU 14_B000101941) and I plugged it into a solderless breadboard to test it out. I connected a 3v LED between the output and ground and while it does light up, it does not light up when it senses light, it just turns off every 2 seconds, then every 5 seconds. If there is a simple fix to this problem any advice would be appreciated but if not I am willing to buy a different one.

Question by thorpenny    |  last reply

How can I make a permanent circuit (from a prototype on a breadboard) without soldering?

Due to a chronic illness, I have bad tremor and some involuntary movements, so for the moment I am avoiding dangerous power tools and soldering (I randomly throw things on the floor and don't want to start a fire!). I have been experimenting with simple circuits on a breadboard, as well as Arduino (microcontroller) projects. Once I get a prototype working on the breadboard, how can i convert it to a more durable form for actual use? I have thought of attaching components to styrofoam and connecting the wires on the back with electrical tape, but I am sure there are better ways... For my current project, the circuit will be quite small and will eventually be hidden inside a crocheted animal, but it will need either the arduino or at least a radio (xbee).

Question by mniss    |  last reply

need help troubleshooting Answered

I already posted a question about this and I got a lot of suggestions, close to 10 I believe, and all of them did not work. the last time it was on a breadboard so I figured that was the problem. I soldered it onto a neat PCB from radioshack now, but it doesnt even turn on. it is a TPA6021A4 amplifier I (attempted) and on the breadboard it had alot of distortion so I figured it was the breadboard. the amplifier and the L7805 powering it, heats up (although on the breadboard the L7805 heated up anyways but that was connected to a 12v wall wart.) and Ive never seen an L7805 heat up when powered by a 9v battery. Im using a 3w speaker because it is the smallest I have. Im not worried about any distortion I may or may not get I just want it to turn on! this question is getting a little repetitive (posted 3 times now on instructables and 7+ on other places) so I think if I dont find the answer im giving up. DISCLAIMER: this will probably be the worst solder job you have ever seen. If thats the problem please tell me, although 555 timers work just fine. Heres the datasheet:

Question by fossilshark    |  last reply