The Programmable Wireless Stamp (PWS) is a low cost micro-controller based wireless board tailored to general test and measurement, wireless data acquisition and IoT applications. The PWS is based off of the ESP-WROOM-02, a high performance wireless SOC by Expressif, especially designed for space and power constrained wireless data acquisition and IoT applications. At the heart of the ESP-WROOM-02 SOC is the ESP8266 chip. An Arduino Compatible target that packs a serious punch with a 32-bit low power micro-controller with CPU clock of 80MHz, 50KB of user available RAM and an external 16MB of Flash memory. The PWS microcontroller is comparable in clock speed to the Arduino Due but its external Flash memory provides a 31X improvement over the 512k of Flash memory in the Arduino Due. The PWS onboard WiFi capability replaces the need for a WiFi Shield; and its I/O expandability of plug and play sensors and PMOD I/O modules provides a small footprint Test and Measurement ready solution at a lower cost.
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