Find good hardware for NB-IoT

[lukipuki]

The RAK Wireless Link.One is almost perfect for orienteering:

• IP65 rated, waterproof enough for orienteering
• NB-IoT modem: low electricity consumption, long range (also in the forest)
• Cost $94 (plus shipping and tolls)
• Weight below 300 grams.
• Small, slightly bigger than the old BSF7 Sportident units.

Unfortunately, the second UART port is not accessible for use with Sportident's SRR and the first one is occupied by the modem.

You can buy Link.One but swap the RAK19007 board for RAK19010. This one has the second UART port accessible. There's a problem though, you'd normally also use RAK19010 in combination with RAK19012 or similar to get power from the battery (and for charging), but this doesn't fit in the Unify Enclosure. Only RAK19010 fits the enclosure but you need to get power in there somehow.

Note: RAK might change the pins on existing boards, including the one in Link.One, but they haven't made the decision.

An alternative solution using RAK Wireless is using RAK's bigger 15cm enclosure and RAK19001 dual IO board. Total cost is only slightly more than Link.One but it's also much bigger and heavier (almost 500 grams).