My name is Jason and I work at an escape room designing the rooms and building them. I am trying to make a “magic Wand” for one of our new rooms and need to install a 125khz rfid in it’s tip to activate the rfid sensor with relay we use in or props. Which means I have to rewrite the rfid capsule to trip the specific sensor. Can I use the rfid master key to reset the capsule to trip the sensor? And also if this is possible how big is the glass capsule itself? Is it small enough where I can drill out the top of my wand and place it inside? Thank you for any feedback you can give us!!! We really look forward to making this work!
Hello Jason and thanks for your post.
We carry a small [[glass capsule RFID tag](https://www.sparkfun.com/products/9416) that works with a 125kHz reader like the [[ID-12LA](https://www.sparkfun.com/products/11827) but I don't know if it will work with the reader you're using now. Unfortunately these are not re-programmable so you can't change the ID number that's in them but if your reader is able to read them, you might be able to set your reader up to actuate when it sees the ID from the tag.I am trying to make a “magic Wand” for one of our new rooms and need to install a 125khz rfid in it’s tip to activate the rfid sensor with relay we use in or props. Which means I have to rewrite the rfid capsule to trip the specific sensor.
And also if this is possible how big is the glass capsule itself? Is it small enough where I can drill out the top of my wand and place it inside?
The capsules are pretty small and I think they would fit inside a wand as long as it wasn’t too thin. They are roughly 2mm wide by 12mm long. Bigger than a grain of rice but smaller than a miniature Christmas tree bulb. The picture below should give you a good idea what the size is.
https://cdn.sparkfun.com//assets/parts/ … 416-01.jpg
If these won’t work with the readers you have currently, you could use them with our reader. You’d need to connect the reader to a microcontroller and then write a bit of software to actuate a relay when the correct ID is scanned. You might check out this [hookup guide to get an idea how to assemble something like this from scratch if you decide to go that route.](https://learn.sparkfun.com/tutorials/sparkfun-qwiic-rfid-idxxla-hookup-guide)](https://www.sparkfun.com/products/11827)](https://www.sparkfun.com/products/9416)