This demo application describes how to connect the IQRF module to the Arduino. Data are transferred over 4-wire SPI bus, IQRF SPI protocol is used. IQRF module works with 3V logic, Arduino can work with 5V or 3V logic. For 3V to 5V logic connection a level converter is required. This article shows two ways for lever convertor implementation:
- Arduino-IQRF-v1_01.pdf – nice and well-known transistor converter.
- Arduino-IQRF-v1_02.pdf – simple and cheap resistor divider solution.
The simpliest solution is 3V Arduino ProMini usage. Just connect ProMini with IQRF directly. Following picture shows interconnection between ProMini and IQRF.
Arduino project with IQRF SPI protocol is attached.
Post sent by Tomáš Novotný.