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by Lomax
Sun Aug 27, 2017 9:16 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

Those LG panels look great. Where are you buying them? I see no clues on the link you gave. Erm. Where I buy pretty much everything else I cannot get from Mouser/Rapid/Digikey/Farnell/TME at a reasonable price: eBay! (and I do hate eBay, make no mistake - only slightly less than I hate Amazon). Hav...
by Lomax
Sun Aug 27, 2017 7:50 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

Gosh, "Eris" is beautiful. She deserves a quality effort. Where is she? Thank you :) Your request for a photo made me look for a recent one, and just looking at her felt like a lightning bolt through my heart. "What the **** are you doing sitting in front of your computer in a dingy old flat trying...
by Lomax
Sun Aug 27, 2017 6:47 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

Wow, a lot to digest there. Tell me about it. My approach to VPNs now a days is to ignore them. In the past I have spent hundreds of hours fighting with configuring VPN's and banging my head against buggy VPNs. Generally they are overkill for a one off system. Recently I had to work with a cellular...
by Lomax
Sun Aug 27, 2017 6:17 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

Wow, no wonder you are tired. Juggling all those conflicting requirements: power consumption, size, bandwidth, CPU power, reliability etc is a challenge. It's what separates engineers from tinkerers and "makers". Judging by the photo it looks like you are making a quality job of it. It requires, sk...
by Lomax
Sun Aug 27, 2017 5:24 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

You've taken on a complex project, and you're doing it to a high standard. I wouldn't be surprised if it has been six months full time to get where you are with hardware and software. Sit down, take a cup of tea/coffee, and just look at what you have achieved. Then prioritize what's left. Decide wh...
by Lomax
Sun Aug 27, 2017 2:37 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

I'm just so tired. I'm doing this all on my own, and I've been working on it since the beginning of the year. The cost in time and money has been astronomical. I just want to get to a point where the system can be deployed, but there's always something that doesn't work the way it should. In fact, v...
by Lomax
Sun Aug 27, 2017 2:00 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

Heater wrote:
Sun Aug 27, 2017 1:52 pm
I think you do the good folks who answer questions and suggest solutions to problems a great disservice. There are lots of useful replies passing through here everyday.

I was talking about a dream I had. And forums in general.
by Lomax
Sun Aug 27, 2017 7:49 am
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Re: Looking for accelerometer recommendations

I actually woke up having a dream about this forum. Someone had replied to this post, telling me how I was an idiot for looking for an accelerometer which could generate interrupts, and that everyone knew the only way to do it was to sample at high Hz and apply lots of complicated maths to the signa...
by Lomax
Sat Aug 26, 2017 7:43 pm
Forum: General discussion
Topic: Looking for accelerometer recommendations
Replies: 18
Views: 2260

Looking for accelerometer recommendations

I'm working on a remote monitoring/surveillance system for my boat , and would like to add a three axis accelerometer inside the enclosure - partly to keep track of her trim and list, partly to detect events such as large waves, collisions, break-in attempts, even people stepping aboard. Seems like ...
by Lomax
Sat Aug 26, 2017 12:33 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Houseboat home automation / surveillance system

Hi Jaroslav! That's right, and I've spent a long time figuring out how to achieve what I want. In a normal domestic surveillance system you have so many options, anything from PoE cameras, to WiFi cameras, to USB webcams connected to more powerful computer(s), to individual Pi Zeroes with one CSI ca...
by Lomax
Sat Aug 19, 2017 11:36 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Houseboat home automation / surveillance system

Once glued into place (and I gave the CA a good hour to set), I painted the inside matte black around the filaments, to improve separation and get rid of some very slight ghosting through the door itself: optic_05_inside.JPG After the paint had thoroughly dried I ran over the back of the filaments a...
by Lomax
Sat Aug 19, 2017 11:31 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Houseboat home automation / surveillance system

I suddenly remembered I had some bits of fibre-optic filaments lying around, and found a piece which was a perfect fit in the 1mm holes I had drilled in the door (so that the WWAN router's status LEDs can be seen without opening it). Having seen the huge improvement in clarity provided by just a rou...
by Lomax
Sat Aug 19, 2017 7:11 pm
Forum: Camera board
Topic: Over exposed stills from PiCamera (via Node-RED)
Replies: 4
Views: 1117

Re: Over exposed stills from PiCamera (via Node-RED)

Yep, early indications are this has done the trick, though the sun has now disappeared so will have to wait until tomorrow for final proof.

Edit: Another bright and sunny day here, and my still images are no longer washed out. Thanks @6by9!
by Lomax
Sat Aug 19, 2017 7:06 pm
Forum: Camera board
Topic: Over exposed stills from PiCamera (via Node-RED)
Replies: 4
Views: 1117

Re: Over exposed stills from PiCamera (via Node-RED)

My bad, CameraPi instantiates the camera in Python, so the modification had to go in /home/nodered/.node-red/node_modules/node-red-contrib-camerapi/lib/python/get_photo.py. I added a simple time.sleep(1) in the camera initialisation code: camera.image_effect = imageeffect time.sleep(1) camera.captur...
by Lomax
Sat Aug 19, 2017 3:50 pm
Forum: Camera board
Topic: Over exposed stills from PiCamera (via Node-RED)
Replies: 4
Views: 1117

Re: Over exposed stills from PiCamera (via Node-RED)

That's fabulous, thank you very much! I have seen some mentions of having to wait a moment before capturing, to allow the camera to adjust exposure, but my application is heavily asynchronous so I would never have noticed any ~1s delay - your reply makes the situation perfectly clear. Should be dead...
by Lomax
Sat Aug 19, 2017 2:50 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Houseboat home automation / surveillance system

Many thanks Jaroslav, great to see you here! If the many hours I've spent looking for a sturdy I/O interface for the Pi is anything to go by you have a pretty unique product - don't be shy about it! Good to have confirmation re. the "optional" pin usage on the Monarco; sounds like what I want to do ...
by Lomax
Sat Aug 19, 2017 1:36 pm
Forum: Camera board
Topic: Over exposed stills from PiCamera (via Node-RED)
Replies: 4
Views: 1117

Over exposed stills from PiCamera (via Node-RED)

I'm pretty excited to have Node-RED email me still images from a CSI attached camera when certain events occur, courtesy of the CameraPi Node-RED node . The more I'm using it, the more impressed I am by Node-RED. But there's a problem: the captured images tend to be severely over exposed, to the poi...
by Lomax
Fri Aug 18, 2017 9:31 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

Also: the deeper I get into Node-RED, the less need I see for Domoticz. Now looking at dashboards and data logging. Anyone else here feel the same way?
by Lomax
Fri Aug 18, 2017 9:06 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

The only other mention of this product was when they developer showed up (briefly) to announce it: Monarco HAT - analog and digital I/O, RS-485, 1-Wire, RTC... - Raspberry Pi Forums Thanks! Shame they are not being more active here. I have been in touch with them though, to get some clarification o...
by Lomax
Thu Aug 17, 2017 11:12 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

It almost seems a shame to shut all those shiny LEDs inside - and I do worry about the unnecessary power draw. But awww, it's so pretty! 09-leds_internal.JPG A row of four 1mm dia holes in the door line up with the status LEDs on the AirLink, so power, activity, WWAN strength and availability can be...
by Lomax
Thu Aug 17, 2017 9:58 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

Rough cost break-down, so far (off the top of my head): Raspberry Pi 2B: £35 16Gb high endurance MicroSD: £15 OpenUPS card: £100 35x25x15cm Enclosure: £30 17Ah SL battery: £30 Sunon MagLev fan: £15 Netgear 5-port switch: £25 IVPort camera multiplexer: £70 2x CSI cameras: £50 2x Petit Studio FPC <> H...
by Lomax
Thu Aug 17, 2017 9:28 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

The cable entry system alone will be worth its own write up:
07-cable_entry.JPG
07-cable_entry.JPG (66.56 KiB) Viewed 4179 times
Pricey, but worth every penny! And yes, I'm still waiting for two (back-ordered) cable glands, both 4x3mm - the power lines are just borrowing a (too large) 4x4mm one in this photo.
by Lomax
Thu Aug 17, 2017 9:22 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

A few more photos...
03-empty.JPG
03-empty.JPG (83.43 KiB) Viewed 4191 times
The enclosure when (nearly) empty.
01-external.JPG
01-external.JPG (57.11 KiB) Viewed 4190 times
A fairly inconspicuous looking enclosure apart from the fan grille - this is intentional.
02-external.JPG
02-external.JPG (57.94 KiB) Viewed 4191 times
Bottom air intake grille.
by Lomax
Thu Aug 17, 2017 9:13 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

Given the bit about it being on a boat, with unreliable power, I would strongly suggest setting it up as a system that is run from either an actual UPS, or a scratch-built UPS equivalent, with the Pi drawing from large batteries, which are recharged as necessary from solar/alternator/whatever. I'm ...
by Lomax
Thu Aug 17, 2017 7:35 pm
Forum: General discussion
Topic: Houseboat home automation / surveillance system
Replies: 53
Views: 9031

Re: Anyone here with experience of the Monarco Hat?

Plenty of people have done Pi-in-car projects, some of them have posted here looking for help or detailing their results. I've never seen any of them mention the HAT you're asking about. Folks frequently don't spend extra money to add interfaces they don't need (1-wire, RS485), and there are simple...

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