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@Gordon thanks for the heads up
..I'm hoping to let you set up most of BLE from JavaScript,
Would that allow changing of TX power?
We use this to de-range a beacon to say only a few meters.

@Gordon v.intrested in BLE iBeacon any chance of support all Beacon types, Google Eddystone & altbeacon? Just starting to use these in projects.

@gordon thanks for the heads up.

@Gordon just checking at to the status of the [cheap board]? if/when it might ship.
I've joined opensensors.io and we got a education project which would be a very good fit as
Pico is unfortunately too expensive.

@Gordon any chance of having 2 uarts surfaced on pins? also am I right the stm32f091cc has a DAC unlike the pico?

I'm with @Gordon "The point of them would be to build them in to stuff, so you'd probably have a battery or power supply attached anyway" ...just what I want for my projects.

....Getting the correct values seems like magic to me!
Yes have spent weeks of my life tuning PID loops.
For most simple control we don't use the D term this is a reasonable into to the subject
http://www.csimn.com/CSI_pages/PIDforDum­mies.html and http://www.pidtuning.net/

Yes, but .espruino on that bit of silicon would make me a very happy man.

Good news
Semtech and STMicroelectronics Collaborate to Scale LoRa® Technology to Meet High-Volume Demands of Internet of Things Applications
http://www.st.com/web/en/press/c2790

Regarding external SMA antennas
This what Numerus a French lora module manf. uses nice and compact 2.3dbi 14cm high
From Linx Technologies.
https://www.linxtechnologies.com/resourc­es/data-guides/ant-868-cw-hwr.pdf
You can get from digi http://www.digikey.co.uk/product-search/­en?keywords=ANT-868-CW-HWR-SMA

I believe libelium on their LoRa WASP mote use a "special 4.5 dBi antenna" by the same Manf.

This a pig ugly one multitech use 3.dbi 20 cm high
http://www.multitech.com/models/95217911­LF

Hi all I too am a member of thethingsnetwork.org have Pico running with Multictech mDot for over 6 months Pico & LoRaWAN are a great combo

One way that might help is opensensors.io now support TLS on mqtt and have a free tire.

@Gordon this fantastic put's espruino in league of it's own.
Once done and dusted this worth a news push.

Thanks

thingstud.io 0.3.0 released support for now for HTTP and feed processors so can work with any ip enabled Espruino no need for mqtt http://blog.thingstud.io/

@sameh.hady thank you for this

@Gordon thanks

@Gordon for clarification is deep sleep consumption of 0.02mA true for the Original board?

@alexanderbrevig & @allObjects thank both for your contribution I got the quote "SDI-12 is a arcane protocol.." from the site that @allObjects got the circuit diagram from and it is...

The cost of sensors it's very high but some schools rung projects using SDi-12 and I'm wondering what these guys/gals are going to use https://connectedseeds.wordpress.com/

@DrAzzy thank but it's more like 1-wire as the tx/rx line are shared. Also like RS232 bit's have to be be inverted e.g a 1 is approx 0V on tx/rx line. After a lot of goolging I've found a UART to SDi-12 but it ain't cheap.

Quick test seems ok will do full test over weekend.
Thanks to you both.

Lawrence

Hi all I have a wee project to interface SDi-12 protocol to Espruino.

SDI-12 is a arcane protocol used in environmental sensing. It consists of 2 wires: data and ground and runs at 1200 baud. The bus is bidirectional, and the logger is the master, and the sensors are slave devices on the bus. https://en.wikipedia.org/wiki/SDI-12

As we often find someone has done this with the Arduino
http://sdiserial-arduino-sdi-12.readthed­ocs.org/en/latest/

One challenge is as yet I can't find cheap hardware to test against.
My customer is lending me a test device, so if your happy to code I can't test.

I don't have a big budget as I'm not being paid for the project I'm pitching.
I'm happy to pay by bank transfer or by kit (e.g purchase Any hardware or software).

Once development is done I/developer will contribute the module to Espruino Lib.

Hope this is of interest to someone in or knowen to the community.
BTW I have @Gordon 's approval to use the forum for this request.

Lawrence

@Gordon getting there
0,1 - 0,2 - 0,3 - 1,3 - 2,3 work
0,2 & 1,2 cause
Uncaught Error: Invalid differential channelSpec 1,2
at line 13 col 102
...channelSpec " + channelSpec);

@Gordon tried and get

Uncaught Error: Invalid differential channelSpec undefined
 at line 13 col 102
...channelSpec " + channelSpec);
                               ^

Uncaught SyntaxError: Got ':' expected EOF
at line 93 col 9
"1,3" : CONFIG.MUX_DIFF_1_3 }, // Differential P = AIN1, N...

Ok differential testing
[0,1] chn: A0 & chn: A1 works
[2,3] Doesn't

Adadfruit doc points to Differential only on A0&A1 and A2&A3
-- valid duo of channels as an array: [0,1], [0,3], [1,3], or [2,3] for differential read
If that's correct then some of the above config isn't correct.
https://learn.adafruit.com/adafruit-4-ch­annel-adc-breakouts/signal-connections

A few things the ADS1X15 inputs float quite high.
When doing differential the first channel is compared to 2nd e.g to get a positive reading A0 has to be > A1.