ISM Waver is a dual-band ISM board built around the STM32F042: a low-power 48 MHz MCU with crystal-less native USB 2.0. It pairs a CC1101 transceiver with an RF switch that routes to two chip antennas (315 MHz and 433 MHz), covering the most common ISM device bands. This board communicates over USB (no BLE), so it’s intended for Android (USB OTG) and the desktop EMWaver app. Bonus: the native USB stack also enables USB device emulation.
ISMSTM32F042CC1101315MHz433MHz
MCU
STM32F042
Design date
2024-08-24
Reproduction cost
$50 / 5 units
Build files
Open the build resources for this device on GitHub. Exact file links can download directly from the hardware repo; otherwise the buttons open the repo or the relevant build folder there.
Device preview
Historical enclosure and device imagery kept with this hardware entry.
