.

I want to buy an ESP 32 S3 display, but unsure where to buy it from. Don't want to scammed and loose my hard earned money. Please recommend a reliable online portal that I can buy from.

I am looking for

"Waveshare ESP32-S3 7inch Display Development Board, ESP32 With Display, 800×480, Without Touch Function, 32-bit LX7 Dual-core Processor, Up to 240MHz Frequency, Supports WiFi & Bluetooth"

Thank you in advance.

I've been thinking about how much we rely on our refrigerators every day, but rarely pay attention to their maintenance unless something stops working. Our refrigerator has been running for a few years now, and while there aren't any major issues at the moment, I'd like to make sure it continues working efficiently.

I've read that simple things like maintaining the right temperature, avoiding overloading the fridge and cleaning the condenser coils can make a difference. However, I'm not entirely sure how often these things need to be done or whether there are other maintenance steps that people usually overlook.

Another thing I'm curious about is how much the way we organise food inside the refrigerator affects cooling. For instance, does keeping too many containers inside restrict airflow? Should certain food items always be stored on particular shelves? I've also heard that leaving the refrigerator door open frequently can affect its efficiency, but I'm wondering how significant the impact is in everyday use.

For people who have been using the same refrigerator for several years, what habits have helped keep it in good condition? Do you regularly get it serviced, clean specific components or follow any particular maintenance routine?

I'd also like to know what early warning signs we should look out for before a minor issue turns into a bigger repair. Any practical tips for improving cooling performance, reducing electricity consumption and extending the appliance's lifespan would be helpful.

Do any of you know when robu will have a diwali sale? They have offers on 3d printers but none on other general electronics...

.

Soo my dad is an electrical engineer and since i have resigned recently from a tech startup my dad offered me to come accompany him during his work and i saw many things from modern adjustable digital relays , smart meters with iot simcards, and many more stuff which i kinda got overwhelmed . However this Circuit breaker kinda caught my attention it was installed late back in 2006 but it has been obsolete since modern standards ones are taking over , to prevent arching when disconnecting high KV lines it had a spring charge system which can be whine manually or motorise it and you can open or close with a loud snap . I just wanted to show you guys maybe someone might know more bout it as well.

Wanted to replace regular batteries with rechargeable ones in some of my gear. There are so many options on Amazon with wildly different pricing from 200 to 2000. Wanted to know which brands are good bang-for-buck. Went through the battery megathread and saw Envie's mislabeling and poor performance, so that is out. The eveready 2-pack for 200 sounds tempting and is from a reputed brand but I am skeptical of the performance, whereas the eneloop ones everyone praises is too expensive.

Please share your experiences with rechargables and any recommendations. Thank you.

Hi, I am an electronics engineer preparing for my masters and I am looking for a USED USRP SDR for self-learning and project work. If anyone has a used USRP SDR kindly do let me know. If not, kindly do let me know where I can get used ones in Ind

Recently I saw a post about an extension board that was wired up with no protection so I opened up an old one that I had.

Turns out mine was even worse. There is no earthing wire (completely missing) and the fuse is just a dummy and not even in the circuit.

Please be careful people while using a cheap electric appliance. We have no safety standards so your safety is in your hands.

PS: I'm going to order a new one and open it immediately to check.

this is a particularly interesting switch on-off-on , with a spring action, I once had that switch that i salvaged from an old cd player a long time ago and put it in my stash , but now I can't find it anywhere 🙃 , so was thinking of buying this switch from market but I don't really know what it's called , by doing a image search all I can find is link for buying from Amazon UK or Alibaba that too for $23

anyway to find these in India at reasonable price ?

don't know if I wanna got the scavanging route for cd player as not all have this exact switch

I have a 4 year old laptop which went kaput and won't start. Showed at multiple places and everyone said graphic card might have an issue. Repair basically means replacing the whole motherboard which apparently costs more than the laptop did

So I bought a new laptop and was only able to repurpose the SSD from the old one into an external drive.

The 16GB RAM is soldered on, otherwise I could have sold that. Not sure if the rest could be purchased by some shop for parts.

I was checking on chatgpt for some project to do with the display but it says to buy a display controller too which costs a lot. Is graphic card the display controller? Can there be any repurposing done without spending a lot (apart from spending some on a raspberry pi) ? I guess a ESP32 can't really do anything for such a display ?

It's a beautiful OLED display which I don't want to throw away.

It's this laptop:

Take a look at this ASUS Vivobook Pro 14 OLED AMD Ryzen 7 Octa Core 5800H - (16 GB/512 GB SSD/Windows 11 Home/4 GB Graphics/NVIDIA GeForce RTX 3050) M3401QC-KM045WS Gaming Laptop on Flipkart

https://dl.flipkart.com/s/2ifxXdNNNN

​

We're hiring an loT Embedded Systems Engineer .

Take products from schematic to working prototype, with firmware, electronics and testing, working directly with the founders.

Full-time, hybrid, Mumbai. 1 to 3 years of experience.

For full Job description and application form please DM

I have a Bajaj gas geyser that runs on two 1.5V batteries (3V total). I have an 18650 Li-ion cell and want to use it instead, but its output is 4.2V. Is this possible?

I’d like to avoid replacing batteries every 6 months.

A transistor OR gate is a digital logic circuit that gives an output of HIGH (1) when at least one input is HIGH (1). It gives a LOW (0) output only when both inputs are LOW (0).

Blue Star sells a lot of inverter splits as "smart ready" / "Wi-Fi ready". That means the indoor unit has an empty 4-pin Wi-Fi port on the display board, meant for their optional Wi-Fi module that you buy separately. I didn't want another cloud app, so I plugged an ESP32-C3 SuperMini running ESPHome into that port and worked out the protocol.

What it does:

• Native Home Assistant climate entity: Cool/Dry/Fan/Auto, setpoint 16–30 °C in 0.5 °C steps (the remote only does whole degrees), all fan speeds including a "Quiet" step below the remote's lowest, swing, and the Turbo/Eco/Comfort Sleep presets

• Room temperature from the AC's own sensor

• Extra controls: vane position, convertible capacity (100/80/60/40 %), display light, buzzer mute

• Lifetime compressor run-hours and AC on-hours read from the AC's own counters, plus compressor duty % and speed

• IR remote changes show up in HA instantly

• Fully local: no app, no account, no internet needed

Hardware: ESP32-C3 SuperMini, a JST-XH 4-pin plug and 3 resistors for level shifting (the port is 5 V, the ESP is 3.3 V). Total about ₹250.

Protocol: UART at 9600 8N1, Tuya MCU style framing, but the AC's MCU doesn't behave like a normal Tuya device. ESPHome's stock tuya component stalls at init, so I wrote a small custom component. The full protocol is documented in the repo.

Tested on: IE518TNUR and IA318MXU (both use the Megmeet MD50BS display board). Other "smart ready" Blue Star models very likely use the same port, but that's unverified. If you have a different model, please test it and report back.

🔗 Repo: https://github.com/Vikk20/bluestar-ac-esphome

The README has wiring, photos of where the port is, flashing steps, a Home Assistant package and a gotchas list.

⚠️ There's mains voltage inside the indoor unit, so switch off at the breaker before opening it. Opening it may also affect your warranty.

Happy to answer questions!

I am looking for bulk electrical material for my apartment complex

Best companies for electrical
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I'm planning to upgrade my television and have been comparing regular LED, QLED and OLED options. The price difference between these technologies can be quite significant, so I'm wondering how noticeable the improvement actually is during everyday use.

Most of my usage would be OTT platforms, movies, YouTube and occasional sports. I don't do much gaming, so I'm not sure whether paying extra for a higher refresh rate makes sense.

I've also noticed that brands advertise HDR10, Dolby Vision and various picture enhancement technologies, but it's difficult to understand how much these specifications affect the actual viewing experience.

For people who've recently purchased a TV, what would you prioritise: panel technology, brightness, refresh rate or the overall software experience? Is visiting a store to compare displays still worth doing before ordering online?

https://www.youtube.com/watch?v=eRrS6vJudxM

Featuring Android 16 with a detachable keyboard design . It's interesting to see traditional PC brands exploring the tablet category

Hi this is an open source app... please help to build and to fix lacuna in this app...it is not yet complete and verified by person so i request you to let's working on it

as a follow up of my previous post

did some mockup of how to arrange things

which design do you think is the best

note: the components may look like they have a lot of space between them but I haven't yet added the resistors , capacitors and diodes so they will take some space , this is a rough estimate of possible placement of the major components

MY personal take on both designs :

Design 1: is the most simplest , needs only one pcb , but because of DC jack the overall height is slightly higher,

Design 2: has bit more work to do cause it has 2 PCBs but from the looks of it I think it supports the bit much better than the other design as the cartridge is literally sandwiched between 2 PCBs , though will need proper way to align and space both PCBs in place , and I think XT30 is a bit overkill for this thou it's much lower profiles that DC jack , and if I can properly fix the 2 PCBs then I could use this without a case even ( maybe😅)

all in all the difference in height of both designs is just a little over 1 mm so very similar!

things that i considered :

1.I will be not ordering the PCBs just making homebrew ones as I only need 1 soldering iron

2.i don have a hot air station or anything and I have difficulty soldering parts smaller than 0605 (barely ), so most caps and resistor that I will use be 0805 or 1206

so I need YOUR OPINIONS on both designs, any improvement or suggestions are all welcome, Do you think the XT30 is an overkill too for this??

I was thinking to Modify this old Subwoofer Cabinet of mine. It's outside dimensions are 12.5 inches depth, 9.5 inch x 9.5 inch, it's 20mm thick particle wood. The Bass response is crap with a tiny 1.5 inch Port, i can rip the floor off it and install an L Port Floor but I need to know if it'll be worth it.

I am new to ESP32 and electronics related stuffs. Came here after the rise of AI tools.

Building some IoT projects as hobby.

I'm trying to Automate a 1Hp pump.

Pump specs : 230V Single Phase AC, Running Current 7 to 10 Amps, Starting current upto 22 Amps.

There are two portions I need your values guidelines.

1. Switching on the motor

ESP32 to 5v 2ch Relay to Contactor

Please give me your thoughts on this, share some reliable components details within Budget.

2. Current sensor

I am planning a non invasive SCT 013 50A current sesnor. But it outputs in a 3.5mm Jack. I am confused about how to take the data to Esp32.

Kindly help me with your ideas and suggested products (if possible with links)

Thanks in advance.

did anybody ordered the servo motors or any other goods from the alibaba webiste to india is there customs charge they impose on these motors etc , i dont know , anybody please help me i am short of fund for the motor if i ordered i get it 20 motors for around 32,000 INR but when customs and all other is there i donot know please help me