If you are looking for a quick way to get some data points onto the IoT, you have lots of choices. One good one would be a module configured for mesh networks like Thread and ZigBee, which offer good wireless range and very well-known properties — though without high-speed data transfer. These are great for applications like the connected home, building automation, lighting control, security and monitoring, industrial data collection, or smart grid/metering.
The MGM111 is a pre-certified processing module from Silicon Labor, enabling rapid development of wireless mesh networking solutions. The module uses a Mighty Gecko SoC and is supported by flexible mesh protocol stacks and complete wireless software development tools.
The module combines a 2.4-GHz radio transceiver, a Cortex M-4-based SoC, high-efficiency chip antenna, crystals, and RF matching and shielding. TX power is up to +10 dBm and RX sensitivity is as low as −99 dBm. It has 256 Kbytes of flash, 32 Kbytes of RAM, a hardware crypto accelerator, a random-number generator, and an integrated dc-dc converter. The cryptographic engine supports AES-128/-256, ECC, SHA-1, and SHA-256.
The device has a 12-bit 1-ms/s A/D converter and a current mode D/A. Deep sleep mode takes just 2.5 µA. Transmit current is 8.2 mA at 0 dBm, while receive takes 9.9 mA. The module uses 1.85- to 3.8-V supply and operates over −40°C to 85°C. Samples available now. $12.85/ea 25.
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