General Discussion

@Muhammad-Ibrahim I suggest you look into PrintNC, which didn't even exist 4 years ago when this thread began. I'm aware of a number of people who have recently "upgraded" (their words) from MPCNC to PrintNC.

Hi there, I have been using this cheap one and it has been working quite well! However, I recently saw this hotplate reflow station and I think with a proper stencil / fine solder paste needle it would be miles better than using a hot air gun (after being burned countless times from having to hold the SMD pieces with a tweezer while blowing). Will try building one (albeit shorter as I want it to fit under my electronics microscope) and will let y'all have a look once it's done!

Hey, I have a fully working node (2xAA battery, ATMega328P, NRF24l01 and the classic DS18B20) in my freezer (around -25°C)...

Happy New Year to all! I hope 2022 brings you good times and some fun new IOT projects! I just downloaded KiCad 6.0 as a present to myself, so I predict some new PCB designs are in my future for 2022 : )

Thought I remembered a teardown and examination, and finally found it... Enjoy... https://youtu.be/9Pw7U0XFgUM At least I hope it's the correct one...

@waspie I like it when people come back and share their experience. It's helps newbies like myself get direction in our own projects. So thank you :)

@NeverDie Thank you for sharing the device you use. I am based in eu and 240 V ac and I think i will just pick one with lcd that can show the highest range even without sounding alarm. Just to check if it is of any concern to me. My wife got candy canes, 7 sets 2xAA battery operated modules containing 40 leds each and i am trying to find a way to power them and wire them to one power source. Reading online it looks to be over complicated with so many things to calculate. This is just a side not not relevant to this post and the reason i didn't reply to your posts.

Thanks for solving this problem.

@Yveaux Should have dove deeper when you fist said radio, looks like everything was taken care off except the radio power. Jumped a wire over there and bang worked. Thanks again for the help.

@TheoL Are you willing / is it in a state where you can share your code? regards Nigel

my experience is different, aliexpress is collected vat on purchase and item was shipped from Netherlands Price: 11.29€ VAT (collected by Aliexpress): 2.59€ my post office sent me email asking for pay 6.09€ (2.59vat and 3.50 fee) and there is no way of contacting them or sending pre-paid vat just a reference number to pay vat online.

@BearWithBeard Wow, thanks for this detailed answer! Today, I received an answer from Ebyte: Yes, because of the shortage of chips, E01-ML01D is temporarily out of stock. It will be available in next mouth, if you have a purchase plan, please book as soon as possible. @skywatch So, there is hope :-)

One little project and you're hooked! You know you're going to want another sensor in the yard, so consider a gateway running MQTT (called a broker). Once you have that, it's really easy to add more sensors. But if you're really strong willed an will only be using two devices ever, you might look at https://nrf24.github.io/RF24/index.html. You can get an Arduino Nano and an nRF24 radio for about $3.50 from Aliexpress (downside: delivery takes ~2 months, so get 10 each.) MySensors Library can do this, too, but I find it a little bloated. Personal note: I'm 70, retired engineer, and have only four projects going right now.

@mfalkvidd Cheers! This project will keep me occupied for my 2 week hotel isolation stay.