3 ms·

So Sematech and Tata's LoraWan plan in India is vaporware? They claimed successful tests, and said their network is open to testing end-to-end by IoT developer

by hodwik 11y ago

So Sematech and Tata's LoraWan plan in India is vaporware? They claimed successful tests, and said their network is open to testing end-to-end by IoT developers. This is a serious question, I just moved most of my stock portfolio into Sematech after that news. If Sematech's LoraWan is real, this is the best pureplay futurist stock I've seen since Tobii.

bsder 11y ago
UWB was a wonderful technology and claimed successful tests and was open to developers. So was WiMAX (which actually did work). Where are they now? Almost all the TI low-power RF stuff is real. Anything LoraWAN claims could have been done with these kinds of TI chips: http://www.ti.com/product/cc1125 http://www.ti.com/product/cc1125 So, why hasn't it? Mostly because these frequencies need big external antennas. TI has a very nice whitepaper about trying to create integrated PCB antennas for these lower frequencies and how much power you lose (answer--a whole lot). I don't think people are going to be very happy strapping a 6 inch whip antenna onto their tiny LED light. And, these TI chips actually can run off a coin cell. Unlike the loraWAN stuff which flags Tx power consumption as up to 100mA. Coin cells are still ruled out. That's not an improvement over, well, anything. And, I note that Microchip is claiming to be shipping dev kits sometime this quarter. This is Microchip. I won't hold my breath, and I still mark this as vapor.
- jotux 11y ago
  >I note that Microchip is claiming to be shipping dev kits sometime this quarter. I won't hold my breath, and I still mark this as vapor. As of a few minutes ago seven in stock at mouser: http://www.mouser.com/ProductDetail/Microchip-Technology/DM164138/?qs=sGAEpiMZZMtzPgOfznR9QQ4aSu6LfLHpY%252bN8idkeT5Q%3d http://www.mouser.com/ProductDetail/Microchip-Technology/DM1...

by hodwik 11y ago

bsder 11y ago

UWB was a wonderful technology and claimed successful tests and was open to developers. So was WiMAX (which actually did work). Where are they now? Almost all the TI low-power RF stuff is real. Anything LoraWAN claims could have been done with these kinds of TI chips: http://www.ti.com/product/cc1125 http://www.ti.com/product/cc1125 So, why hasn't it? Mostly because these frequencies need big external antennas. TI has a very nice whitepaper about trying to create integrated PCB antennas for these lower frequencies and how much power you lose (answer--a whole lot). I don't think people are going to be very happy strapping a 6 inch whip antenna onto their tiny LED light. And, these TI chips actually can run off a coin cell. Unlike the loraWAN stuff which flags Tx power consumption as up to 100mA. Coin cells are still ruled out. That's not an improvement over, well, anything. And, I note that Microchip is claiming to be shipping dev kits sometime this quarter. This is Microchip. I won't hold my breath, and I still mark this as vapor.

jotux 11y ago
>I note that Microchip is claiming to be shipping dev kits sometime this quarter. I won't hold my breath, and I still mark this as vapor. As of a few minutes ago seven in stock at mouser: http://www.mouser.com/ProductDetail/Microchip-Technology/DM164138/?qs=sGAEpiMZZMtzPgOfznR9QQ4aSu6LfLHpY%252bN8idkeT5Q%3d http://www.mouser.com/ProductDetail/Microchip-Technology/DM1...