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neilh replied to the topic I2C and power management in the forum Mayfly Data Logger 6 days, 12 hours ago
Be interested to hear about the power measurements you make and tradeoffs in power management.
I’m including a Vbat/Coloumb counter monitor with an RS485 wingboard and optionally routing power from the LionBat. It uses the switched 3V3 and the switched 5V – but paying attention to having compatible Ioff when switched off..…[Read more]
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neilh replied to the topic I2C and power management in the forum Mayfly Data Logger 1 week ago
Hi @mbarney I have come across the I2C issue, and trying to remember what I did, or solution. There was an update that could fix it, but of course that is a fork.
It might have been that a wrongly soldered I2C for a humidity device caused the problem for me. Arduino paradigm is typically normal use cases.
The Mayfly 0.5b has pullups R8 & 10 o…[Read more]
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neilh replied to the topic Announcement: New ModularSensors release v0.28.01 in the forum Environmental Sensors 1 week, 3 days ago
I’d like to give my thanks to @srgdamiano for the excellent job in doing releases and also documenting them in different places including the platformio.ini . The git managed source control is core to being able to build reliable loads. Absolutely amazing the distributed gits.
I still don’t quite follow all the release mechanisms, as they area…[Read more]
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neilh commented on the post, The "Frankenlog" Network: A Forest Floor Ecohydrology Sensor Network Using the Mayfly Data Logger 2 weeks, 3 days ago
Fascinating the network. Thankyou so much.
I was just wondering if you where planning on describing any of the stations in more detail?.
I’d be interested in how you did the powering, and what was taking the power. Though the whole software architecture of the data flow, (and challenges you found) would be fascinating 🙂 -
neilh replied to the topic Transfer file from SD card to iOS/Android via bluetooth in the forum Infrastructure and Equipment 3 weeks, 3 days ago
found this
http://www.dfrobot.com/product-1073.html TEL0073 Xbee TH BLUETOOTH 4.0 using Ti’s CC2540. Digikey 1738-1014-ND
Seems to me there is a critical power issue; how can a powered BT LE sleeping device plugged into a Mayfly, wake a sleeping Mayfly once a remote BT LE beacon (cell phone) has been detected. For the TEL0073 there is a mappin…[Read more]
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neilh replied to the topic Transfer file from SD card to iOS/Android via bluetooth in the forum Infrastructure and Equipment 3 weeks, 6 days ago
@selbig Wow thanks for sharing that. I’ve been thinking about BT for some time… and hadn’t seen how far it has come. There is also Blue Tooth Commander App for Android – so good for all types.
I’m just wondering how you are powering it.?
On powering, I’m really looking that it needs to be able to use low power, and then turn on when the C…[Read more]
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neilh replied to the topic Transfer file from SD card to iOS/Android via bluetooth in the forum Infrastructure and Equipment 4 weeks ago
Hi @selbig an interesting idea.
I’ve been thinking about unattended access (of just equipment monitoring) and BT (low power) would be pretty nice. However as you are seeing there is a lot of complexity and some history with BT protocol versions that makes a simple concept a bit challenging. Sounds like for some reason BT is not associating with…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month ago
Hi Sara, the short answer is no.
I’ve had some other urgent issues that have come up, and so have had to leave it for a while. In my test bench trial above over a couple of days with 2minute sleep/wake – 3 runs from reset – all failed after #1~5hrs #2 4.5+7.5 #3-4Hrs – so something happening after 100+ sleep/wake events.
Its seems like it m…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month ago
In order to check if the Vcc is causing the Xbee S6B WiFi modem a problem, I’ve put together a separate regulator based on the TCR3DF335,LM which regulates to 3.35V and can pulse to 400mA, with a normal spec of 300mA. The S6B spec is for 3.14-3.46V . The TCR3D fits on a SC74 prototyping board with 1uF decoupling.
SMT is so nice when you have…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month, 1 week ago
I’m testing the stability of the Mayfly with the Digi WiFi S6B with software using the 0.27.5 base., running off the LiPo battery.
Some of the the WiFi S6B hybrids initially connect to the WiFi network, get NIST time, and then later after a couple of cycles of sleeping/waking will no longer connect to the wifi. I’ve connected a Salaea Logic…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month, 1 week ago
I’ve received more “LTE Bee Adapter” cards, and looking to experiment using it to investigate why the Xbee WiFi S6B is not reliably connecting to the local wifi network. https://github.com/neilh10/ModularSensors/issues/21
The LTE Bee Adapter card provides power directly from the LiIon battery, control of the Xbee reset, and potentially also an…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month, 2 weeks ago
Well after running for some time with the WiFi S6B, and still having problems after it has been running for a couple of hours,
I’ve switched to one my target field internet comms of Digi XBee3 LTE-M over Verizon.Very interesting the Digikey RevXsystems https://dataplans.digikey.com (thanks to @mbarney for the suggestion) has a new low cost…[Read more]
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neilh replied to the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 1 month, 3 weeks ago
Some status – the periodic Mayfly RESETs turned out, I think, to be happening when polling the Insitu LT500 gauge over SDI12. https://github.com/EnviroDIY/ModularSensors/issues/344
The new code breaks the polling of the Insitu LT500, I’m doing debug under various scenarios to try and under stand it.…[Read more]
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neilh posted a new activity comment 1 month, 3 weeks ago
Some status – the periodic resets turned out I think to polling the Insitu LT500 gauge over SDI12. https://github.com/EnviroDIY/ModularSensors/issues/344
The new code breaks the polling of the Insitu LT500, I’m doing debug under various scenarios to try and under stand it.
https://github.com/EnviroDIY/ModularSensors/issues/346I’m seeing…[Read more]
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neilh started the topic Stability Testing ~ how to do it? in the forum Mayfly Data Logger 2 months ago
I’m just wondering who might be doing some system stability/reliability testing ? and what their setup is.
By system stability: I define it as test setup representing real world conditions that can exercise a majority of core code.
Traditionally, in open source this is such a sqiggy area, that it requires a community of supporters to exercise…[Read more]
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Some status – the periodic resets turned out I think to polling the Insitu LT500 gauge over SDI12. https://github.com/EnviroDIY/ModularSensors/issues/344
The new code breaks the polling of the Insitu LT500, I’m doing debug under various scenarios to try and under stand it.
https://github.com/EnviroDIY/ModularSensors/issues/346I’m seeing…[Read more]
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neilh replied to the topic Inexpensive DIY conductivity sensor in the forum Environmental Sensors 2 months, 1 week ago
The latest release of ModularSensors 0.27.0 has a new simple electrical conductivity sensors ~ AnalogElecConductivity.h/.cpp
Thanks to Sara for accepting it as a MS sensor and formatting it to the latest documentation style. See the amazing Doxygen generated https://envirodiy.github.io/ModularSensors/group__sensor__analog__cond.html
Sara has…[Read more]
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neilh replied to the topic Battery Capacity /Fuel Gauge in the forum Mayfly Data Logger 3 months ago
Hi Matt – well been watching the output of the LC709203F with some other testing. It does work for the accurate battery voltage measurement.
However the LC709203F “%” capacity could be challenging to use. There is a lot of technical discussion about battery fuel gauges and what works and doesn’t. Another device that I got was the Seeed LT…[Read more]
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neilh commented on the post, Evaluating Maxbotix Ultrasonic Sensors for Monitoring Stream Base Flow 3 months, 1 week ago
Thankyou so much for doing such detailed work. I’d been thinking of a boom situation for some measurements. However the atmospheric temperature will vary.
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neilh replied to the topic Sampling frequency for Monitor My Watershed in the forum Monitor My Watershed 3 months, 1 week ago
My experience is that its not capable of that.
I have been doing a lot of testing in pushing up readings to test Mayfly reliable data delivery algorithms I have evolved. I have in some cases had 6000 points to push (ie 60days of unreported readings at 15minutes per reading), and MMW has been very slow, often after a small number (~10) of POSTs…[Read more]
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neilh replied to the topic Monitoring power consumption in the forum Mayfly Data Logger 3 months, 1 week ago
Continuing some ideas on https://www.envirodiy.org/topic/battery-capacity-fuel-gauge
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