I need a Bluetooth audio bored with through holes for passive filters, six speakers (two tweeters two mid range and two subwoofers) it needs to be as small as physically possible.

Trying to build my own headset. I'm only good with the sound designing, and not the electronic aspect. An external antenna is needed, please and thank you!

i need a pair of timers built, probably 555 derivatives. one delay on, the other delay off (delays set via DIP or pot with digital readout, timers initiated via momentary contact). 12vdc. also, a pair of 4-20ma sources, adjustable via DIP on one and pot on the other and selectable via three momentary, led indicated pushbuttons. your output to me would be a shared simulation first, then files/parts lists suitable to submit to PCBway or other. more detail if you’re interested. reasonable comp, of course. these circuits are all available at stack exchange or other, just need them proven, integrated, etc.

Brand new great condition dm me for more info

Hey everyone! I'm a student trying to learn some EE, and I'm currently constructing a prototype that requires 5V, 1A for >1 hour. From my research, the safest&best option appears to be LiFePO4 batteries. I want to be able to recharge the battery within the prototype too (USB-C), and also switch to direct wall power if possible. Finally, I want to be able to read the battery % on my ESP32 easily.

This is the current schematic I've taken some time to create. So much documentation. I was wondering if anyone could give an extra set of eyes on this, or any feedback, or anything in general. Thanks a ton in advance!

Got a few of these Cedes make photo sensors for sale. Operate in a pair for a light beam for automatic doors, security systems etc… Not even getting views on EBay. UK based.

https://www.ebay.co.uk/itm/276836811180?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DEwkGcoEQh2&sssrc=2051273&ssuid=DEwkGcoEQh2&var=&widget_ver=artemis&media=COPY

I'm trying to find a small recordable speaker for a cosplay project of mine that isn't like the clickable toy plushies that are within the market. I'm looking for something that has a motherboard, wires, batteries or battery holders (like the things u see in toy nerf guns) and a button. Despite trying to find something that would fit my desires. I am unable to find it and would rather ask the experts (or maybe luckier individuals) into helping me find something that would fit my project.

Apologies for the formatting in advanced as it's my first post

Edit: I would like to buy one in Australia if possible but shipping overseas is completely fine

On EBay. This any good to anyone? Not getting any views on EBay, maybe a bit too specialist?

https://www.ebay.co.uk/itm/276833260055?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DEwkGcoEQh2&sssrc=2051273&ssuid=DEwkGcoEQh2&var=&widget_ver=artemis&media=COPY

Hello, I am in need of a micro Bluetooth 10keypad that can be operated in my pocket with 1 hand. Any suggestions or help is great! Thank you.

I am trying to get into HW failure analysis and debugging. I can read schematics and understand electronics. But haven’t dealt with oscilloscope for last 15 years since my college. I need some one who can help me navigate through an oscilloscope, real life demo ways to read SPI, I2C, PCIe, Clocks, etc buses. and give real life assignments. I am looking for a live hands on training instead of watching YT videos.

Recently purchased a number of tool chests at auction for my shop. The chests were locked and sold with all contents.

These Nogami foil punches were inside along with what appears to be other lab grade electrical component manufacturing tools. I'd really hate to simply scrap all these as many of them are new in the packaging. Is there an aftermarket or interest in any of these?

Thanks for your time.

Brand new here and a dufus when it comes to electronics. I would love to have a custom built rzr v3 that works with todays networks or at least has the outer shell/case that looks identical to the rzr, accepts a generic sim, can call, text, and the camera works. What private companies or contractors can I reach out to, and what is a ballpark cost to have this built?

To sum up: custom built phone with the basic capabilities (maybe an upgraded camera )all encased in an old motorla flip phone shell.

I have a bunch of these in pairs, not moving on EBay, if someone wants to take them in bulk, let me know.

https://www.ebay.co.uk/itm/276785174411?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DEwkGcoEQh2&sssrc=2051273&ssuid=DEwkGcoEQh2&var=&widget_ver=artemis&media=COPY

I’m in the UK. If this is not allowed in the chat, let me know.

Hi, I am looking for someone to build a set of 10 reaction cones with light up buttons on top that randomly light up and turn off when hit. It is a competition between two people to hit their specific color the fastest. Would be great if they also made some sort of noise when hit. I also need them to be connected to a scoreboard as per the example.

I work for an exhibition company so the client has asked us for a quote and I have no clue!

Any advice or direction would be much appreciated! Required in Melbourne Australia by end of Jan.

Thanks

I am in the process of ordering custom components through a Chinese manufacturer, however they are charging 230$ for freight on something that will arrive in the size of a shoebox (which is even more than the $150 I'm paying for the components themselves). The seller told me they can cancel the freight if I have an express account and then arrange a waybill on my own. I'm new to this so I am confused and would like some guidance on how I can go about doing this and the opinions of this with someone experienced with procurement from overseas. Thanks for any and all responses!

I have some control boards from a Pick&Place SMT machine. These boards are worth something but selling them is difficult. Tried general ecommerce website without success, tried specific website too, with same result.

Where can these type of boards be sold? Thanks!

I'm buying almost any type of electronic components, test equipment, and tools.

IC chips, sockets, connectors, switches, relays, etc. I'm not too interested in things like computers, phones, or TVs, rather the parts that go into making them.

I'll buy new or used, old and obsolete, items found during cleanouts, even things picked out of dumpsters.

I'll buy small or large quantities, from individuals or compaies.

I'll come to you, pay in cash, and haul it away.

I train bird dogs. One of the tools we use is a bird launcher I have a unique idea for one that involves RFID.

Basically, I want to build an add-on to the launcher. Ideally, it would be a UHF RF-ID tag that could clipped onto a dog collar and a remote solenoid added to the launcher. When the dog gets within 10-15 feet of the launcher it would automatically release the bird.

I have experience in building circuits and repair, but the actual design is not in my wheelhouse.

What would you charge to design this circuit? Ideally the remote circuit and battery, circuitry would need to fit into a 5X2X1.5-inch box

I would prefer to work with someone within a drivable distance of Youngstown say 2-4 hours.

If this isn't the right sub please direct me to one more appropriate.

Hey everyone!

I’ve been trying to find a manufacturer for an electronic device through Alibaba for several months, but I haven’t had any luck reaching a reasonable agreement. The main issue is that most manufacturers require large orders just to create a prototype, which isn’t feasible for me since I’m still in the development phase.

The device I want to manufacture is a waterproof bracelet with BLE5 that can connect with others and emit alerts based on set distances. It’s a relatively simple design; I already have a prototype on a breadboard and all the schematics ready, but it’s been challenging to find a lab or manufacturer willing to produce it at a reasonable cost and without excessive bureaucracy.

That’s why I’m reaching out to the community to ask for recommendations for factories, labs, or even independent developers who have experience creating electronic prototypes at a reasonable price. Any advice or contacts you can share would be greatly appreciated.

Thanks in advance! 🙏

Hello, I am looking for a budget variable AC power supply for a test lab. I work for a small company and we are limited in resources, so expensive power supplies are very unlikely to be approved.

The requirements for our lab are to supply up to 277V AC with a minimum of 150VA rating. We only have access to 120VAC input through our outlets, so 120VAC supply would be best for us. Our boss prefers American made products, if at all possible. Open to all suggestions within a reasonable price range to propose accordingly. Thanks in advance

I have an Apple HiFi that I'd like to update with tweeters, a rechargeable battery pack, and bluetooth connectivity.

Others have attempted / completed similar mods to this: *Tweeter Mod *LiPo Battery Mod *Airplay Mod

I'm interested to commission someone to complete these modifications for me, with the rechargeable battery pack being most desired, Bluetooth connectivity second, and tweeters third. Modifying the 30 pin dock to USB-C would also be a bonus.

The goal would be to retain to the external appearance of the unit while improving the audio quality and usability.

I'm located on the east coast of the United States.

If this is something you'd be willing and able to complete, please reach with a rough quote, including pricing, timing, and additional information required (e.g., desired battery capacity) to finalize the quote.

Thanks.

Electonics manufacturers always have dumpsters full of things that i could sell.

I used to take home 250++ pounds a week from Xerox Webster NY factory.

I now buy surplus electronics throuhht NY .... direct from companies or from workers whp fish it out of dumpsters.

Where can I sell this stuff? Siglent SVA1075X - Siglent SDG6052X - Teledyne Lecroy Wavesurfer HD4096 oscilloscope WS4104HD

Im trying ebay and facebook but need gone. I know they're worth a lot and people messsge me knowing that but offer far below its value. Plus I dont want to lose thousands in ebay fees on top of taking a lower amount.