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This page contains information of use to people who want to use wisps, but not necessarily develop for wisps.

**What you need to get started**

You need one or more WISPs with the correct firmware, and a supported UHF RFID reader to read the WISPs. If you're going to be installing the firmware on the WISPs yourself, then you need the firmware source, a compiler, a programmer, and a WISP programming board. You can find out more about these last three items on the InstallingFirmware page. You can find out about current firmware source on the WISPFirmware page.

**Supported readers**

WISPs work with Alien, Thingmagic, and Impinj speedway UHF RFID readers. However, some WISP firmware versions work only with the UHF RFID Gen1 protocol, and others work only with the UHF RFID Gen2 protocol. Furthermore, not all WISP firmware versions work with all readers, and not all possible reader modulation settings work with all WISP firmware versions. You'll need to read the documentation that comes with your firmware carefully to make sure that you select the correct firmware and reader settings.

That said, recent WISP development has focused on the UHF RFID gen2 protocol using Miller 4 modulation. As long as you're not using outdated WISPs, it will likely work with readers with those settings enabled.

Known good UHF RFID readers:

Reader hardware
Reader firmware
Impinj speedway1
2.6, 3.0
Alien ????

**How to get WISP data from your reader**

Depending on what reader you're using, you have several choices in how you retrieve your WISP data:

ThingMagic reader: You can use Richa's GUI application. [Any other options?]

Alien reader: You can use Richa's GUI application. [Any other options?]

Impinj speedway1 reader: You have several choices:

  • You can use the built-in web server. Just point your java-enabled browser to the reader's IP address. If you have trouble getting the IP address, you can just attach to the reader's serial port and reboot it. The default username is root and the password is impinj.
  • If you are at version 3.0+ of the Impinj firmware, you can use our reader application which is based on the Low Level Reader Protocol (LLRP). LLRP is a standardized interface to RFID readers that supports many language bindings. You can find out more about LLRP at
usingwisps.txt · Last modified: 2018/07/11 08:26 (external edit)