Welcome to the WISP 5 Wiki!

This project is supported in part by NSF Grant CNS-1305072, entitled "CI-ADDO-EN: Infrastructure for the RF-Powered Computing Community." Additional support from NSF Grant EEC-1028725, Intel Corporation, Disney Corporation, and the Google Faculty Research Awards program.

Thanks to JaeMin Shin and everyone in the Computer Network Lab at South Korea's Sungkyunkwan University for their contribution of a version of the WISP code that can operate with the Asian version of Impinj Speedway R420 readers, the R420-GX2!! Find the new WISP5 firmware repository branch here.


The Wireless Identification and Sensing Platform (WISP) is an open source and fully hackable battery-free platform for experimentation with low power sensing, computation, and communication. This wiki is a place for users and developers of the WISP to compile resources related to the WISP, to share knowledge, and to collaborate on large scale projects.

  • Are you interested in working with the WISP 5? Please send an email to mailwisp@gmail.com to request information about the availability of pre-built WISP 5 hardware.

  • Check out the wiki sections in the navigation panel. First time users should look at the Getting Started section and also read through the FAQ.

  • Source code and design files for the WISP 5 are open source: WISP 5 Firmware, WISP 5 Hardware.

  • Got questions, or running into trouble? Got ideas for future WISP versions? Please post questions and comments to the "Discussion" page.

  • Contribute to the WISP5 wiki! Request membership using the "Members" bar on the side of the page.

  • The WISP5 is the latest iteration of the WISP. For resources related to earlier WISP versions, see wisp.wikispaces.com.

  • Looking for an NFC based WISP? The NFC-WISP interfaces with smartphone readers and more! See the new nfc-wisp wiki to learn more!

New features in version 5.0/5.1:

  • New! Compatibility with Impinj R420 readers sold in Asia (R420-GX2). See the 436kHz branch of the wisp5 firmware repository to get your WISPs talking to readers not sold in the USA.

  • Energy-optimized firmware stack with support for FM0 modulation and simpler application interface.

  • Read and Write command support out of the box.

  • MSP430FR5969 microcontroller with FRAM non-volatile memory for ultra low energy data storage and retrieval.

  • ADXL362 accelerometer with ridiculously low power consumption.