DevHeads IoT Integration Server

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DevHeads IoT Integration Server

The DevHeads IoT Integration Server accelerates technology engineering by helping pro devs learn, share and collaborate.

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scitechindian
scitechindian
View on Discord
1/16/2024

i am looking for lora gateway with multiple nodes project

are there any resources which are available to learn
techielew
techielew
View on Discord
11/24/2023

PCB/PCBA Services in Brno

Hey @Petr Dvořák, @dougsandy_92230 is compiling PCB/PCBA resources in the Czech Republic and looking for some specifically in and around Brno. I mentioned you and said I’d make the connection. Since we’re not Discord friends I couldn’t set up a group DM so posted here … plus anyone else who might have any connections can chime in. Thanks,...
Navadeep
Navadeep
View on Discord
9/30/2023

Making a door lock with STM32WL

Hi Devs, Recently I got into some RF stuff and planning to build a door lock app - with one device as a remote and another attached to the door controlling a sort of electromechanical system to latch/unlatch the door. I have tried a basic device-device communication, sending a command to open and close the door where on reception of the command from a remote, the node beeps buzzer. Wrote about this here (https://community.element14.com/challenges-projects/project14/sub1ghzband/b/blog/posts/project14-subghz---door-lock-app-part1) To extend this further, I require some suggestions on system design and implementation plan on how multiple doors can be controlled. 1. A mesh type network between 3 or 4 nodes on the door would be suitable?
2. How the electromechanical side of control can be designed to latch/unlatch the door? (maybe would require an additional power other than onboard)...
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techielew
techielew
View on Discord
9/8/2023

Design Engineer Needed! Peltier Cooler Design Help!

I’m new to Peltier modules, heatsinks, CPU fans, and thermoelectrics. I need help figuring out how to efficiently match those components together. I’ve been more of a mechanical designer rather than an electro-tech designer. I am designing an Aeroponic system and I need a way to cool my nutrient reservoir. My goal is to bring the temperature of a 3-5 gallon water container down from 85 degrees Fahrenheit to 50 degrees Fahrenheit. Here’s the link to the design I'm trying to base my design off: http://www.novatecproducts.com/iceprobe.htm The diameter of the probe is 1-1/4”. I thought about doing a simple cooling plate but couldn’t seal it against a cooler or plastic container as well as I could a bulkhead style probe fitting. They don’t sell probes like that and no one else makes anything close to that kind of thermal transfer probe so I had to make one. I couldn’t find an aluminum bolt or all-thread in 1-1/4” diameter so I got a piece of 1-1/4” aluminum round bar and threaded one end to fit a flat aluminum flange and got an aluminum flat lock nut to seal it against the wall of the container. I plan to use the aluminum flange of the probe as the thermal face that will contact the cold side of the Peltier module and transfer the cold temp down the probe and into the water. The flange is a 4-1/2” diameter circle so I want to find a Peltier chip that will fit under it nicely and be as cooling efficient as it can be. I need to cool a 3-5 gallon container from 85 degrees Fahrenheit to 50 degrees Fahrenheit but it’s going to have a controller so if the chip can cool more than that, it would be preferred because I might change the size of my reservoir and I want it to be strong enough to cool a larger size water tank or insulated box. If the module is able to cool it more than what I’m needing, the controller won’t have to run it as long, which would mean less power draw. I could use those huge Heatsinks with two and three fans with pipes that looks like a hot rod engine, but since the Peltier device will be sitting on the side of the water tank, the heatsink can’t be very heavy or stick out very far. So I need to match the Peltier module with a heatsink and CPU fan that will effectively cool the Peltier module that I’m looking for. I was thinking about using a heatsink like this: https://www.google.com/shopping/product/886015867783779298?q=efficient+cpu+heatsink&client=safari&hl=en-us&biw=414&bih=719&tbs=vw:l,ss:44&prmd=sivn&sxsrf=ALeKk02wST30IOo2hK7zmStKgUnU86Q0dQ:1593026927993&prds=epd:11304467210571878547,cdl:1,prmr:1,cs:1...
techielew
techielew
View on Discord
9/7/2023

Seeking Collabs Guidelines

#seeking-collabs is the DevHeads version of "help wanted". It's where you can share ongoing projects, seek assistance from other DevHeads with complementary skillsets, and contribute your expertise to other devs looking for help. We observe S.O. rules for posting etiquette. Please: * Write a title that summarizes your problem or request so other DevHeads can quickly identify as collab candidates * Introduce the problem/request before posting code, schematics or design files...
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