neilh20

@oakleynode  wow  interesting you are looking at RSSI and it has a lot of variation. I haven’t characterized the RSSI result for a high percentage of failing calls.

Another system that is also on the edge, and I added a new antenna that improved it,  the reading is  -81dBm  https://monitormywatershed.org/sites/TUCA_Mi06/

The modem is a  Digi…[Read more]

@oakleynode something to note is that the MMW/ODM2 packet design with UUIDs make an extra heavy packet. The packet design is not optimally designed for wireless conditions, the thingspeak packets are much lighter. If your site is on the edge of the wireless range,  which varies a lot of with weather conditions, its going to have more trouble with…[Read more]

@shicks surely the issue isn’t how long it lasts – it will always run  out of power at some point, or even worse batteries loose capacity, what was working decays – the issue is how to reliably recover when it has run out of available mA.  ?

The reliable bit – as in all engineering – is to add a buffer for real world component variations and t…[Read more]

@shicks I agree it would be good to see the software. For my systems I look to have it last 14days before it reaches 3.8V and it is a difficult target unless its being tested for and the time taken on the radio is also characterized.

I see the issue is how to keep the sensor readings delivered reliably while there is enough power, and then when…[Read more]

(previous post deleted and restated)    @jp – interesting data. It very much looks like up to early October the solar was delivering enough power for the system.

Then with the seasons solar changing, the solar panel aspect is not delivering the power needed

What I would recommend is a) need to charge up the internal LiIon 4.4Ahr battery

1. …

[Read more]

@jp – interesting data. It very much looks like its the solar panel aspect that is not delivering the power with the seasons changing, and some loss of solar.  a) So anything you can do to help out a better solar aspect  – less shade would help, and  solar panels are best set at an optimal 120 from horizontal for that location (h…[Read more]

Hi @jp – I only install 2.5W or for a shady location I upgrade to 10W.   Can you share the site that is publishing on, and can see how fast the power went down.

The non recharge batteries could work – but you need to do a lot more power calculations to understand how long they will work.  4 batteries (4*1.6V =6V) will work for a boost plugged in…[Read more]

An update – I’ve found I2C bugs in some of the ST3100’s devices – that I couldn’t get a work around. It may be to do with the AVR I2C master. Some other engineers are using it with an STM32 / ARM system that they aren’t seeing the same problem https://github.com/neilh10/STC3100arduino/issues/1

From using the STC3100 -…[Read more]

@jp  thanks for sharing – power is a challenge when there isn’t enough of it. Finding enough power for your systems is the easiest step, – that is upsizing the solar panels, and ensuring they have enough solar aspect this time of year.

Just wondering, what is the standard kit that you have and source- sounds like you have the Mayfly 1.1 – what…[Read more]

Seems like this might have broken, and I’ve created an issue https://github.com/ODM2/ODM2DataSharingPortal/issues/682

Wow nice to see the pictures and mechanical detail. I always find that a challenge to get integrated early – mostly because I’m doing everthing.  Is it part of an open source project? sounds like its for a specific translator/extender fiber optics to copper RS485/RS23   In looking over the Rpi PICO, while an amazing processor with program st…[Read more]

@vogelrnws I wonder how its going. I see that Teensy is moving to a Teensy4.0 CortexM7

The Mayfly 1.1 is great for powering options – but it does mean understanding the tradeoffs.

For an FTDI cable,  for debug monitoring of the Mayfly this is what I do – https://github.com/neilh10/ModularSensors/wiki/Test-Equipment-FTDI-cable

I also cut some pins to make it a “monitoring cable” that won’t cause a reset when the USB is plugged in.…[Read more]

Many thanks got it. I appreciate the effort and detail that goes into producing a new production run. The pogo pin connector is great and so simple.

Got the .pdf – I copied the .jpg instead of more intelligently clicking it to get the .pdf!

Just wondering if you have any thoughts on changing the Vbat   Rs to 1M / 270K for better noise i…[Read more]

Hi @shicks, just received two Mayfly 1.1 and noticed they are rev1.1B – just wondering what the differences are from  rev1.1A? 🙂

I did pull the circuit diagram from https://www.envirodiy.org/mayfly/hardware/ however the resolution is so low, its not all readable. Just wondering if there is a pdf version. 🙂

I also checked…[Read more]

It seems to me its a working practice’s issue, repeatability and traceability- not a programming issue.  From a distance, seems like you should be able to see the code in the directory that you are building – however you do have a unique directory structure, and if opening HicksonDeployments.code-workspace – maybe its mispointed. I open…[Read more]