MEET KIISU The Flipper Zero is an open-source project, KIISU is a credit-card sized Flipper Zero compatible device. Everything you can do on a Flipper: NFC, RFID, SubGHz, Infrared, Bluetooth, iButton - you can do on KIISU. There's even bunch of extra sensors - temperature, light, air-pressure, accelerometer & compass you can use! Flipper Zero firmware: original and alternative run directly on the KIISU without any modification or fiddling about. Built to be more developer-friendly and hackable, it's also compact, budget-friendly and wallet sized! CREDIT CARD-SIZED & CUTE Incredibly compact - the power of Flipper crammed into credit-card format. Slips into your wallet: ready for every moment. 100% COMPATIBLE Built on the Flipper Zero's Open-Source schematics - KIISU is completely compatible: hardware, firmware, functionality. BUDGET & DEV FRIENDLY If you're a tinkerer at heart, you'll love KIISU's open nature. If you're looking for a budget-friendly alternative KIISU is for you. THE ORIGIN STORY KIISU is the first fully-compatible device built from Flipper Zero's open-source schematics. Originally built as a proof-of-concept, KIISU scratches an itch for multiple people: it's budget-friendly, its naked PCB format is easier to hack and develop on, it's got a bunch of extra sensors - and its form factor means you can always have a Flipper in your pocket. .feature-item { margin-bottom: 1.5em } 1 2 3 4 1. DREAM SCREEN KIISU's screen is an identical resolution OLED for beautiful crisp black and white pixels. 2. FLIPPER, BUT FLATTER All hardware, firmware (original and alternative) and software (desktop, cli and mobile apps) are completely compatible with the original Flipper. 3. BATTERIES INCLUDED Rechargeable LIR2032 batteries give KIISU juice on the go - it really is a Flipper for your wallet! 4. ONBOARD EVERYTHING The perfectly tuned SubHZ, BLE, NFC and RFID antennas are embedded into the PCB - along with extra sensors like accelerometers, a compass, light and pressure! Quirky and cute, compact and wallet-friendly, there are many reasons to be seduced by KIISU. There's an active community building all sorts of extensions, a forked-firmware and even 3D printable accessories. All that's needed is your participation - and KIISU! What's included KIISU (v4BR) 1x LIR-2032 Rechargeable Battery 1x Quickstart Guide 1x KIISU Mascot Keychain What's included KIISU Manual + Quickstart Guide KIISU Github Repo KIISU Discord Community 3D Printable KIISU Case models Frequently Asked Questions What are the functional differences between the KIISU and Flipper? Although this board can run almost any Flipper Zero firmware, there are a few limitations: It lacks Flipper Zero secret keys, so some SubGhz rolling-code protocols and U2F may not work with official firmware. Antennas performance may vary. Certain schematic differences mean features like battery status rely on Aux MCU firmware. I flashed Flipper Firmware onto the KIISU, and see "No Factory Keys Found. Secure enclosure is damaged. Some apps will not work". Because the KIISU hardware is not produced by Flipper Labs - it doesn't have their factory keys - so the Flipper Firmware shows this notification. The "no factory keys damaged enclave" only impacts functions where Official Flipper keys are required: some SubGHZ rolling codes, and the U2F functionality. In stock KIISU firmware that notification is hidden - this notification only appears when running official Flipper firmware.
