iRobbie is the revolutionary app that brings smartphone power to your Arduino project.
A small device that will help you sorting resistors without wasting time with their color code.
Project tutorial by Federico Vivaldi
You should never leave your 3D printer unattended... but you do. This device will cut power to your printer when it senses thermal runaway.
Project tutorial by ArtSuzhou
I am not trying to be disrespectful, but as I was going though this, the one question I kept asking myself was: "what is a coffee counter? and what is its use if you have to be there physically to press the button?" I guess this is a generic counter for anything you want to count, but I could think of more logical uses, like a replacement for the mechanical counters some people use for statistical purposes (counting traffic or visitors to some public place).
I am interested in home control, so I watched this post with interest, but while I was reading it, I couldn't help but wonder at some things:
- In the introduction, you gave 'smaller footprint' as one of the advantages; but if you use 2 transformers as described, along with all the electronics, the whole switch is rather big...
- If I understand it correctly, you are using 12V AC to switch the bulb; does that mean that if you want to build this the right way (with diodes that can stand the 230V), that you use a 1:1 transformer? Or could you leave out the transformer altogether?
- You use a 'Philips Hue' bulb as the load. Why? I have these bulbs myself, and they are meant to be used with the wireless Hue controllers, without the need for 'hard switching'. For me it confuses the issue, I expected it to be used for 'dumb' loads, such as simple LED bulbs or older fluorescent bulbs.
For my own installation, I used 'solid state relays', these can switch AC loads, and use a 3-24 volts DC input. They switch on the 'zero-cross' moment, so there is no danger of surges or sparks. Example: https://www.gavazzionline.com/pdf/rp1a48d5.pdf With this, you could use the same interface using the Arduno and TFT-LCD, but with considerable less power electronics.
Nice project! Maybe you could add all the components in the list in the beginning, and show some more pictures of how the inside is wired up.
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