Hi all,

Mods: I've read the rules, there's no mention of asking to hire a dev here (specifically) - trust this is OK.

I've got several Eagle designs and am planning a new project to start with KiCAD; this will be a paid hourly gig.

• Widget: Integrating around SMT32 chips; typically IoT oriented.
• Budget: Fair project rate as the tasks will be well defined
• Project: Personal, you'll be helping me effectively
• Schedule: If we work well together, think long-term. There's no fixed end-date.
• Progress: Yes, at the moment I'm working with a dev board but one of the first tasks is to prototype a working target board, i.e. tying connectors and peripherals together.

Thank you so much, Best M (michael@inertialbox.com)

Looking to have a custom built vape pen like the on in the image to fit a 510 thread. Any help would be great.

I'm currently in the midst of my internship at a company, and part of my job involves diving into the electrical system of a big agricultural tractor. I'm tasked with figuring out how efficient it is, how much energy is lost in the cables, and all that good stuff. The goal? To see if we can tweak any of the subsystems to make them better or if we need to rethink how everything's laid out.

Here's the thing: we're a small team, just a handful of engineers, and I'm feeling a bit lost on how to approach this. We've got a physical prototype sitting right here, but I'm wondering if it's worth creating a virtual model too. I'm not exactly an expert in how these kinds of problems are usually tackled in the industry, but I'm determined to give it my best shot and come up with something useful.

So, if you've got any tips or ideas on how I should go about this, I'm all ears. Any advice you can throw my way would be a huge help. Thanks a bunch in advance for your insights!

I am interested in having a custom electronic built. I have a vision and have found separate components that will serve the purpose but no technical knowledge on how to assemble them.

I want to attach a motor to a button activated speaker. So that when the button is pushed it activates both the speaker and the motor for a limited time.

I found the speaker component:

https://www.amazon.com/dp/B09VMZPNSP/ref=sspa_mw_detail_0?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams

And the motor:

https://www.amazon.com/TEESE-Technic-Motor-Battery-Box-Extension-Cable-Gear-Axle-Universal-Joint-Lego-Technic-Parts/dp/B0C6KMYJMM/ref=mp_s_a_1_3?crid=3DIAQBXNOAE9O&keywords=lego+motors+and+gears+sets&qid=1706731403&sprefix=lego+motor%2Caps%2C297&sr=8-3

But I am not sure how to connect them together. Any advice?

Hello folks. If I have a JPG Fourth picture from top! or other picture of a circuit, with values and/or part numbers included, could someone be willing to transfer this to a CAD project/file, so that I can have it created? Make me an offer. I have had issues with doing it myself in KiCAD. I am always open to alternative solutions, and any recommendations. On the board, I'll need terminals for the coil and batteries, all labelled, and 4 additional terminals on two separate points in the circuit.

One pair of terminals would be Kicker - and +

4 pair would be for charging batteries, might need to be accommodating of larger gauge copper wiring.

3 pair would be connections to trifilar coil.

Device is a battery energizer and charger.

No schedule, just do it when they can.

This is personal.

I am in Champaign Illinois.

No work has been done beyond testing small prototypes.

Hi folks I’ve mistakenly reversed the 5V+ and 5V- during cabling and I burnt a circuit of a lithium-battery electric pump. The circuit looks like this. Looking for help to identify the component so I can try to repair it. Thank you!

Need help/consult building simple led circuit - $20

Total beginner here and willing to pay for a little help. I'm working on a project that calls for these LEDs attached to a board, with the main circuit on another. I'm essentially creating a ring light and will be trying to turn the diagram into a PCB and working unit. Example here

Would require 120 LED (2835 led chips)
Dimmable
ON/OFF

Anyone interested in helping me get there PM me- happy to pay $20 for a discussion/diagram/working outcome.

Due to a cancelled production run we have the following unused leftover parts.

​

• 190x Raspberry Pi Compute Module CM4001008
• 3600x CMWX1ZZABZ-078 lora module (stm32l072 + SX1276) (2x 1000 reel, 1x 500 reel, 1x 1100 cut tape)
• 148x Quectel BG95M1LA-64-SGNS LTE Cat M1 modem
• 200x Quectel BG95M3LA-64-SGNS LTE Cat M1 / NB2 modem
• 1000x NT3H2111W0FH NFC Type 2 Tag with I2C
• 1000x AT25DF021A-SSHN-T 2Mbit SPI flash
• 400x RM2015S enclosure

Everything still vacuum sealed.

​

If you are interested in any of them at a discounted price let me know.

We are based in the Netherlands, so we preferably send them within the EU/EEA.

IPD90N04S4-04 Quantity: 40k DC: 22+ Automotive OEM Location Europe

I'm in the process of clearing out my garage and have come across a Lenze i550 and Lenze 0.18kW motor which previously was to be used in an effort sensing application for elderly care/exercise. Unfortunately the project was canned before it even started.

I'm now wondering what to do with the equipment. Ideally, I'd like to pass it on to someone who could make good use of it - I've tried advertising it on the usual spaces but no takers. Otherwise, I guess it'll end up at the local recycling place.

Any takers here in the UK?

Can someone explain to me what "BJT and JFET Frequency Response " is ? with as much details as possible please :/

I have an ongoing project using a tms320x28069 that my EE & Programmer are having issues on. Are you a competent microcontroller person familiar with this TI chip?

If you have RECENTLY worked with this exact chip and have programmed it to do something, anything at all, DM me.

This is a proper paid gig, either physical in Metro NYC / Westchester or Remote on-line. Paperwork. Cold Hard Cash. English / Mandarin speaker. Programmer needs some mentoring and practical programming help. Main sticking point atm is getting the program to save to the chip, and work outside the debugger.

The company's quotation for agents is uniform. In order to increase the enthusiasm of agents, the company reserves a 15% margin for agents. In addition, tiered prices will be established based on the purchase quantity. There is a possibility of special pricing for special end users.

Kinghelm Electronics Co., Ltd. has established a unified pricing policy for its agents. This means that regardless of whether the agent is a large partner or a small-scale distributor, they will enjoy the same pricing treatment. This unified pricing approach ensures fair market competition and avoids the negative impact of price wars and cutthroat competition on both the company and its agents.

However, in order to motivate agents and enhance their profitability, Kinghelm Electronics allows approximately 15% flexibility in pricing. This means that agents can adjust product prices according to their operating costs and market demand to gain greater profit margins. This flexibility helps agents better meet customer needs and improve their sales performance.

Furthermore, Kinghelm Electronics has implemented a tiered pricing system based on the purchasing volume of agents and the weight of service to end customers. The larger the purchasing volume of the agents, the higher the price discount they enjoy, thereby increasing their profit levels. Similarly, if agents are able to provide quality sales and after-sales service to high-value customers, they will also receive more competitive pricing policies to encourage them to capture more market share for the company.

By implementing these price control measures, Kinghelm Electronics aims to establish long-term and stable cooperative relationships, encourage agents to actively participate in market competition, and achieve a win-win situation. The combination of unified pricing and flexible pricing space allows agents to make adjustments based on market demand and competition while ensuring a good working relationship between the company and its agents.

In summary, Kinghelm Electronics Co., Ltd. controls agent pricing through unified pricing and providing agents with some pricing flexibility. This approach ensures fair market competition and motivates agents to perform well and enhance profitability. Kinghelm Electronics will continue to adhere to this pricing control strategy, working together with agents to develop and grow while providing high-quality products and excellent services to customers.

https://preview.redd.it/5t7pa5unxfzb1.png?width=554&format=png&auto=webp&s=3138b164c43db90637a0bd76ab435c45e012e03f

About Kinghelm
Shenzhen Kinghelm Electronics Co., Ltd.（www.kinghelm.net）has technical backbones from Tsinghua University and UESTC, and has introduced overseas returnee professionals. Kinghelm is able to develop highly reliable and high-performance antenna and connector products.KH series products of "Kinghelm" brand include Beidou/GPS antennas, RF adapter connectors, plug connector, electrical data connectors, terminals, and customized vehicle harnesses, industrial / medical connectors, and military special antenna connectors."Kinghelm connects Beidou", Kinghelm has grown with the development of China's Beidou industry. Starting from supplying Beidou/GPS dual mode antennas, IPEX terminals, and RF adapter cables for automotive manufacturers, Kinghelm has continuously developed products. Currently, it has a series of WiFi, Bluetooth, NB-loT, LoRa, Zigbee, UWB, and GSM antennas, RFID tags, RF adapter cables, military standard microwave antennas, vehicle grade SMA, SMB, FAKRA holders, coaxial cables, and can customize non-standard antenna connectors based on customer drawings or samples.

hi all, i'm looking to make a steam deck-type handheld with a raspberry pi 5 at its core - i have been doing research for a while and have many of the parts picked out, but i don't really know how to design a pcb to bridge those parts to the raspberry pi effectively or write code so the raspberry pi knows how to interpret their input. how much does that sort of thing cost?

I bought the scope this came from new. Power supply stopped working after about 15 years and I replaced it with another (used) power supply, but then I later repaired the original [this one]. All that was wrong was a failed electrolytic capacitor. I created a full schematic organized by functional blocks in the process of fixing it. I'm mostly just trying to find it a good home.

Hello Everyone!

I am designing a circuit for a DAQ for a resistive sensor (load cell/strain gauge), and I wanted some advice on the topic of the best sensor circuit configurations. So, please, if you have any advice on ICs, connection configuration or complete systems/concepts, feel free to share it. I would appreciate any advice about DAQ in these systems!

US-CA-Los Angeles.

I am looking for someone to do some soldering work for a batch of customized LED lighting strip modules. Basically, take a typical adhesive-backed ARGB LED strip, mount them to a panel, and then solder the strips to connector PCBAs (already made) which are mounted to the panel with plastic rivets.

The strips would then need to be plugged in and tested; and reworked if necessary.

It's probably about a day's worth of work.

If you are local and have decent soldering skills, please let me know your background and asking rate.

Thank you.

Hey everyone, I’m new to Reddit so not sure if this is the right sub for this. I’m an Industrial Designer and I am working on a special project creating a large custom immersive lighting installation. It’s a fun, creative project and it’s for a super prestigious space - I’m very excited about it!

I have the fixtures designed and a skilled metalworker on board, but am looking for a talented electronics/electrical assembler. Someone who has experience with wiring LEDs and electrical projects in general, and someone who is generally a handy person and thrives on problem solving is ideal. Hit me up if this sounds like you! This is paid and hours are flexible.

Thanks!!

Hi everyone

I have no experience in circuit design, but I dabble in modular electronic music. I can solder and I understand PCB design and basic functionalities, but I'm not too knowledgeable in the electronics parts.

My current music setup doesn't allow me to properly follow the number of bars and beats as my performance goes on without needing to count everything (and I don't want to use that mental energy for this).

Basically, I want to build a setup with 32 LEDs (or other similar layouts such as 8 and 4) which will light up sequentially as a response to trigger signals (5V) input received from sync. I want to be able to start, stop, pause, and reset the light position, and everything must run off of batteries, preferably not more than 2 AA or at most a 9V (I would love a minimum 4h battery life though).

If anyone knows of such projects already available somewhere I would be grateful for the information.

Otherwise, I would love to work with someone who can assist me with this project. Depending on the type of assistance, I am willing to pay.

I mainly want the circuit design, I can build the piece myself, but if someone is willing to build it for me I will gladly pay extra.

Looking forward to hearing from you!

I remember when I was a child that I had a TV remote control which have this 'knob' at the bottom which generates some power to the remote after being turned for some period of time. I don't remember the precise efficiency of the generator but I still remember that it generated little power after some turning. I don't know if such remote controls have removeable batteries or not... What happened to those remote controls? Why are they very uncommon? Heck, I tried googling for such controls and I barely found it on 2 sites. The picture below was taken from ebay

https://preview.redd.it/vvp6zu80ldob1.png?width=1054&format=png&auto=webp&s=2e477f25d4c448f5cc2908252d21361e35f9f134

Hi. I have a Teledyne Lecroy WaveSurfer 4104HD oscilloscope that I’m looking to sell. It retails at around £10k-£15k, I’d be looking £5k-£8k. Is there anywhere that specialises in buying/selling high value electronics test equipment? I don’t feel like I’d get much traction on eBay, not that I’d be comfortable selling something like this there. I’m based in the UK.

I am new to reddit. I am reaching out how to connect with designers and manufacturers to create a prototype for an electronic hand held device that I am working on. Any suggestions would be appreciated.

https://www.ebay.co.uk/itm/276009332504?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=DEwkGcoEQh2&sssrc=4429486&ssuid=DEwkGcoEQh2&var=&widget_ver=artemis&media=COPY

I’ve got loads of circuit board cameras, all working, with lens. 12v power, PAL video output. No audio. Where can I shift these, I really don’t want to throw them out!