Editing AVR microcontrollers (section)

=== Raven wireless kit ===
The RAVEN kit supports wireless development using Atmel's [[IEEE 802.15.4]] chipsets, for [[Zigbee]] and other wireless stacks. It resembles a pair of wireless more-powerful Butterfly cards, plus a wireless USBKey; and costing about that much (under $US100). All these boards support JTAG-based development.

The kit includes two AVR Raven boards, each with a 2.4&nbsp;GHz transceiver supporting IEEE 802.15.4 (and a freely licensed Zigbee stack). The radios are driven with ATmega1284p processors, which are supported by a custom [[segmented LCD]] driven by an ATmega3290p processor. Raven peripherals resemble the Butterfly: piezo speaker, DataFlash (bigger), external EEPROM, sensors, 32&nbsp;kHz crystal for [[Real-time clock|RTC]], and so on. These are intended for use in developing remote sensor nodes, to control relays, or whatever is needed.

The USB stick uses an AT90USB1287 for connections to a USB host and to the 2.4&nbsp;GHz wireless links. These are intended to monitor and control the remote nodes, relying on host power rather than local batteries.