Jeti RFID Battery-logger

Make your self a complete RFID-Sensor for two models and 10 batteries for less than 20€!

Hardware-article is out: www.rc-thoughts.com/2016/11/jeti-rfid-sensor-article-is-out/

Hi Tero,

Did you check the NFC tags when they are sticking on a LiPo battery?
I am using special "onMetal" tages who are dedicated to work on a metal surfaces (and a LiPo is such a thing).
Before I had used 25mm Tags but they were unreadable when sticking on the battery. Now using 30mm onMetal tags (Mifare Classic 1k) it works fine.
A few days ago I ordered two of the smaller RC522 readers but shipping from China takes a while. They could be integrated into my Robbe Twin BID.

If someone wants to get rid of his Twin BID 1000W I am looking for a second charger. The user interface is a nightmare but charging is OK.

Best regards
Onki

Thanks for the tip Onki, even with these cheap and thin tags it works with a simple and inexpensive workaround, just tested and confirmed.

You are right, just slapping the tag to battery does not work but having a little two-sided tape under it does the trick

I'll add the info to web also.

www.rc-thoughts.com/jeti-rfid-sensor/ id updated with info based on Onki's recommendation, thank you!

Hi Tero, Onki and all other specialists,
Tero, first of all many thanks to you and your great work. I really like your projects and website and can´t wait till I have my DS-24 to use your LUA-Scripts

Now, I think about building this cool device to get familiar with Arduino and all the other stuff Till now I´ve nothing to do with this and it looks like this is a good project to start. I´d like to order the components from germany. Can you please check, if these are the right components and correct them with the right ones from Germany, if they are wrong.

I found this:
Arduino Pro Mini 3.3V 8Mhz: (yours is a ATMEAG328, mine is a ATmega 328P. Is this a problem?)
www.ebay.de/itm/Pro-Mini-328-ATmega-328-...b:g:p7EAAOSwOVpXcR7i

RC522 13.56Mhz RFID-reader/writer:
www.ebay.de/itm/RFID-Kit-RC522-RC-522-re...7:g:w9UAAOSwGYVXBiQq

USB to TTL adapter:
www.ebay.de/itm/USB-to-RS232-Serial-TTL-...f:g:Qz0AAOSw6BtVVJge

RFID-Tags: (are these the „better“ ones from Onki?)
www.ebay.de/itm/5x-NFC-Tag-On-metal-Plak...?hash=item35f57cf54f


Many thanks in advance and best regards
Jochen

Those look right to me, tags are the "on-metal"-tags so should be fine.

There is something very annoying with REX-receiver and Jetibox UP-button, it is working only 30% of times. Very strange since:
- R- receivers are fine
- REX + Expander is fine
- REX all other buttons are fine.

Buttons are read in the exact same way, I just don't get it...

I might make the tag-writing menu a bit different so UP-button would be used as little as possible. Very frustrating.