that a bit higher than using pounds for dollars as typically done.
ebay – nothing relevant showed
srp
BTW: I had this at home: http://www.ti.com/ww/en/launchpad/launc … .html#tabs
Played 3 times with it and now it’s gather dust in the original box (no use for it)
Generally this sector of the market is getting colonized by devices like the RPiZero and the CHIP, both of which are cheaper, and have a higher clock speed and more RAM.
At the other end of the scale STM are still promoting the STM8, e.g. They just announced that they had shipped over 2 billion STM8’s
STM8 hits 2 billion units shipment mark
Design-in activity with our successful 8-bit microcontroller series continues to grow, resulting in record-breaking shipments quarter after quarter. With an impressive two billion units shipped, the STM8 has become one of the world’s most popular MCUs both in mass market and at OEMs. The STM8’s outstanding core performance associated with a wide set of peripherals and memories covering 2 to 128 Kbytes are suitable for many application requirements at the most competitive price.
Generally this sector of the market is getting colonized by devices like the RPiZero and the CHIP, both of which are cheaper, and have a higher clock speed and more RAM.
I found very few pages of hobbyists about this chip and these cheaps boards. Maybe is more diffused in mainland China and Google didn’t find pages there, Baidu shows more pages.
@WereCatf
Unfortunately most SBC doesn’t have RTOS and there are applications where precise timings are mandatory.
For example Adafruit writes that RaspberryPi is unable to drive correctly WS2812 LED strips. But I am not sure since there are libraries for these LED on RPi. You can also use an MCU with a SBC.
The only one I found, was not compatible with the Arduino IDE, and wouldnt seem to compile even with the bare metal espressif API 
IMHO, the whole MQTT space has yet to shake down. There are dozens of different brokers, some open source, some closed source, some fully commercial.
All with various sets of non standard features.
MQTT and IoT really need a thread to themselves.
If people are interested, I can split this thread, but its probably more to do with non STM32 devices, as I am not aware of any STM32s with built in IoT e.g. wifi connectivity.
Thanks
Interestingly with that library it only supports Quality of Service, 0 and 1. Which means whatever you are set (or sending) is not guaranteed to get received (or be received).
I don’t know what this means in terms of how things actually work. I presume the server just gives up after a certain timeout.
I see QoS 0 and 1 somewhat like a twitter or Facebook feed, where it really doesn’t matter if you get the data or not.
However for most control applications, I would have thought that QoS 2 was essential
Generally this sector of the market is getting colonized by devices like the RPiZero and the CHIP, both of which are cheaper, and have a higher clock speed and more RAM.
At the other end of the scale STM are still promoting the STM8, e.g. They just announced that they had shipped over 2 billion STM8’s
STM8 hits 2 billion units shipment mark
Design-in activity with our successful 8-bit microcontroller series continues to grow, resulting in record-breaking shipments quarter after quarter. With an impressive two billion units shipped, the STM8 has become one of the world’s most popular MCUs both in mass market and at OEMs. The STM8’s outstanding core performance associated with a wide set of peripherals and memories covering 2 to 128 Kbytes are suitable for many application requirements at the most competitive price.
… as I am not aware of any STM32s with built in IoT e.g. wifi connectivity.
… as I am not aware of any STM32s with built in IoT e.g. wifi connectivity.
And you seemed to need to create an account to get more details.
You will find STM8 anywhere, specially in low-cost chinese systems. No wonder for hot sales…..
So LoRa allows a receiver to get a decent frame error rate (FER) after coding corrections… of say -130dBm instead of typical SCADA 900MHz FSK modes that struggle at -95dBm.
As ever, this is trading coding rates and slow data rates for range – where range means long with line of sight or shorter with buildings/trees in the path but much longer than higher speed FSK.
What is interesting is that in the EU, and less so in the US so far, people are putting up LoRa “cell” sites in cities and backhauling these to form a WAN, using 2.4 or 5GHz for backhaul and 902-928MHz ISM band for LoRa access. Putting these cigar box sized things wherever easements and power permit. Mostly in 400MHz area, or 868/900MHz (for better building penetration than 2.4GHz). This bypasses the cellular operators’ telemetry data pricing of about $5/month for SCADA, HVAC monitoring, home toys like IoT, and so on. I wonder if this self-funded thing will catch on in the US. Not much need for LoRa unless you live on acres of land. Or have commercial intents. The few LoRa gateways on the market are rather expensive for hobbyists; one can make a box for $50 or so. Power and fire code issues are ever-present challenges.
The Radiohead protocol guys are using the low cost LoRa modules for something. I did a lot of work with Radiohead a couple of years ago. Freeware. Excellent example of prudent use of C++ inheritance applied to small microprocessors. And exemplary use of Doxygen! That work is light years away from Arduino’s kludging. http://www.airspayce.com/mikem/arduino/RadioHead/
I wonder how long it will be , before authorities, decide that this is illegal, as it makes it hard for them to monitor the traffic.
I wonder how long it will be , before authorities, decide that this is illegal, as it makes it hard for them to monitor the traffic.
