The most interesting output is given below. Impressed by the inequality we were wondering whether it would be possible to use one of those USB broadband modems for embedded projects and eventually decided to pick Vodafone 3G+ modem to give it a try. The table below represents dramatic difference between the two solutions: Modem type Add to this virtually symbolic price tag for modem – Vodafone 3G+ USB stick would cost you $9(!) and it starts sounding like a fairy tale. On the other hand, there are mobile broadband options like Vodafone USB Extreme 3G+ which can deliver data at up to 42 Mbps (download) and up to 5.76 Mbps (upload). For example, prices for GSM Arduino shields currently available at Australian Little Bird Electronics are ranging between $71 and $118! The actual numbers for data exchange rate, however, are not that high and typically are in the vicinity of 9.6 Kbps for 2G networks. The challenge can be addressed by using a WiFi module in those areas with WiFi coverage being available but what if it is not an option? Then there is no other choice but GSM (also referred as 2G) module which substantially elevates the cost of overall solution and yet it is incapable of providing communication speed high enough for many nowdays needs. The prospect of having high speed communication channel between an embedded project and outer world is very tempting.
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