@wafa_athmani well might be electromagnetic interference.Also ensure RTC module works with your Pi, check for physical damage, refer to manufacturer instructions. I just hope this helps!
@umairahmed17 Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!
I was ordering a PCB from JLCPCB with a size of 8cm*4cm, 4 layers board. When I placed an order for 15 pieces it came out about $20. But when I increased the amount of PCB to 20 pieces, the board price increased drastically to about 40 dollars. When I ask they said it's pcb panelization. How does this affect the cost. @PCB & Analog
I think it's related to Copper plate that should enter the machine for manufacturing, 15 seems to use only one plate and for 20 they'll be using 2 of them and the second one the majority of it will be thrown as Droppings
In other terms : PCB panelization involves placing multiple PCB designs onto a single larger panel for manufacturing efficiency. When you increase the quantity from 15 to 20 pieces, it might exceed the maximum number of PCBs that can fit on a single panel efficiently, requiring an additional panel. This can result in higher manufacturing costs, thus increasing the price per board. Essentially, you're paying for the additional material and manufacturing process required for the extra panel(s).
Most times PCB fabricators do produce there PCB boards in panels which are of various sizes. When do do pay you pay more for the panel not just the design itself. So for your design the extra 5 pieces you added increased the number of panels. Let's say to two panels, which then increased cost.
It's always adviceable to know how your fab house do there panelization and with you can determine the size of your board to the number of boards that will be produced to reduce cost
hello guys , i wanted to share with you the process of making pcb from scratch .... it is my univ project to convert this circuit to PCB i will share the final result when it's done
Hmm-- perhaps some kind of object recognition? Like point a camera to a tree/the sky and try to identify birds and planes? Or build a door lock for your room that only opens if your face is recognized (perhaps build some kind of second method for opening the door into it so you dont lock yourself out :D)
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@boualleg sabrina , there are a lot of environmental projects to run using stm32 and Ai, we have the smart waste management system, we have the air quality monitoring system, these once are mostly done projects . So try out SMART IRRIGATION SYSTEM for Agriculture, you can use STM32 with AI to monitor the soil moisture levels and weather conditions. The AI can analyze this data to determine the optimal watering schedule for crops, reducing water waste and improving crop yield. This project can help farmers save water, increase efficiency, and promote sustainable agriculture practices
To implement your DIY flight's gyroscope with Arduino, you need to find code that works with your gyroscope model. Look for libraries online that match your sensor. There's no one-size-fits-all solution, but you can try different libraries and tweak them until the gyroscope behaves correctly for your flight system. It might take some trial and error, but you'll get there on the run
So I heard about this watchdog timer thing, with lots of processes, it's kinda confusing. How do I make use of watchdog timer properly in my RTOS? Maybe having each task send a little signal with its own special ID?
guys need a solution like if i have a application were if the led strips of a road side led strip stops working it will send alert how can we detect if one or more strips of leds breaks down in a single street light
Anyone used one of these before? Definitely meant for beginners, but wow it has an amazing amount of stuff built in.
'm working on a project where I'd like people to be able to duplicate it. Something like this seems like a really good way to let people do that, even if using a soldering iron and other things that we take for granted would be a challenge.
You mean the street lamps or in-road lighting? If you're looking for street lights are you talking about a sensor node or the whole end-to-end system? If just the node I'd look for a small, low-power based LoRa platform (provided the municipality has a gateway or there's one available to use that meets security/data requriements) and we can talk about additional design requirement from there. LMK.