Customer:
I’m working on a smart mailbox project for university with a colleague. I have several questions about the project and would appreciate your help.
Imam nekoliko upita vezanih za izradu jednog projekta pa ukoliko pronađete vremena i volje za odgovoriti puno bi mi pomoglo.
Originally submitted via Facebook on 17 August 2016. Migrated to the forum for community visibility.
Soldered Support:
The obstacle sensor can run on 3.3V - simply connect it to any GPIO pin on the Node and adjust the potentiometers as needed. Regarding the battery, do you have a datasheet for version 1? I’m unable to find one online.
Navedeni senzor može raditi na 3.3V, jednostavno ga spojite na neki GPIO pin Nodea i podesite potenciometre po želji.
Što se tiće baterije, imate li negdje datasheet za verziju 1? Neuspjevam pronaći na netu.
Customer:
For the obstacle sensor, I got the answer. For the battery: the NodeMCU has no connector or charging circuit. We recommend a battery, a holder for it, and a charger for it. With those three components you can create an independent power circuit. Do you need help with sending sensor information to the internet?
Što se obstacle senzora, to je stigao odgovor, a za bateriju: vidim da node MCU nema konektor niti charging circuit. Preporučamo bateriju, drža za bateriju i punjač za istu:
Sa te tri komponente možete napraviti neovisni krug za napajanje.
Što se tiče slanja informacija od senzora na internet, trebate li pomoć na tom dijelu?
Customer:
Connect the battery to 5V and GND, not to 3.3V.
Bateriju ćete spojiti na 5V i gnd, nikako na 3.3V 
Customer:
Thanks for all the answers. The battery will work out - I mainly wanted to know if it could function that way, and it clearly can, which is great if we decide to go with it. Now, another thing: the sensor. Its default state is LOW when there’s no obstacle, right? Only when the IR beam is broken and something reflects it, does it go HIGH and send that information to the microcontroller?
Hvala redom za sve odgovore.
Baterija će biti o tom po tom, prvenstveno me zanimalo samo znate li može li tako funkcionirati, a očigledno može
što je super ako se u konačnici odlučimo na isto.
hvala još jednom za taj dio.
druga stvar, senzor.
njegovo je default stanje low ako nema prepreke, zar ne?
tek kada se IR zraka prekine i od nešto reflektira postavlja se u high i šalje mikrokontroleru tu infomraciju?
Soldered Support:
Don’t let us give you all the answers - try connecting the obstacle sensor and see what it outputs! You can do it in a few steps. You can easily invert the information in code, whether it’s HIGH or LOW. I was going to suggest data.sparkfun.com, at least for testing. I’m not sure how much freedom you have for the final work. I’m sure you can find examples online for creating a simple database where you can insert information from the board.
Da baš ne bude da sve tako lako otkrivamo, probajte spojiti obstacle sensor pa vidite šta daje van To ćete u par koraka odraditi!
Informaciju ćete lako obrnuti u kodu, sad bilo to HIGH ili LOW.
Planirao sam predložiti data.sparkfun.com, barem za testiranje ako ništa. Ne znam koliko imate slobode za konačan rad. Imate vjerujem i po internetu primjera kako odraditi nekakvu jednostavnu bazu u koju biste ubacivali informacije s pločice.