The WORKBENCH part 2


#210

x1103

new angled patch cables arrived … now it fit’s in the enclosure

x1104

and continue with the 3g/4g/wifi rechargeable mobile gateway

how did @jmarcelino got all that in such a small box ? :scream:

x1110


(Gry Kyo) #211

IMG_20181015_160940 My workbench today, a tall rock in Ireland

IMG_20181015_154614
Over there, in Wales, surely one gateway? I could see the UK but my packets not finding a any hardware I didn’t own!


#212

first tons of errors get thrown at the innocent noob user … :sweat_smile:

x1108


(Remko) #213

Today code optimisation of my Meetjestad node connected to an Honywell particle sensor. This image was captured with my Siglent scope (good suggestion on this forum) and a uCurrent Gold (eevblog).

image


#214

makes the whole sequence visible :+1:


#215

x1111

x1112

first use of new gluegun… aaaaargh :sweat:

x1116
dual voltage power unit with 4 x 12000 mA in 2S2P balanced config, output 8.4 v (dc/dc to 5 and 12v)

x1117
before mounting the cells I charge them individually to an equal value, mount the balance board and leave them balancing for a night, then discharge the pack and recharge… and finally test.
goal is 2 days working on battery’s (without sun/charging)

x1118

x1120

x1124
test GPS module

x1125
ruggedising the enclosure for outdoor use

x1123


#216

x1113

x1114

x1115

'recycle older 4:3 d-sub monitors (the ones that you get for free :wink: ) with help of
this 1080P Hdmi Female To Vga Male With Audio Output Cable Converter Adapter C6V5


US $4.42


(Gry Kyo) #220

So a man contacts me via TTN, asks can we meet and talk LoRaWAN, drops the letters “PIR” in casual concersation and I go all @BoRRoZ!20181022_230616
…and build a PIR node to demo. My ultra low power PIR’s vanished in shipping but this should go for a while on a 18650 for demo :slight_smile:


#221

Which ultra low power PIR’s did you order?


#222

you can modify the 'standard PIR’s to operate @3V (and lowering the operating current)

or buy a low current one like this module (15uA!)

but don’t forget… low power comes with a price… detection distance


(Gry Kyo) #223

@fewi The units I purchased but which were lost were the 15uA PIR’s that @BoRRoZ links to just above here ^^^

G


(Jeff Uk) #224

Sadly that vendor does not ship to UK but this one does & has a few left in stock. @GryKyo …u in Eire? Maybe that allowed shipment or may be why lost?


(Gry Kyo) #225

@Jeff-UK - Our postal service received/scanned a package originating in China but it never tracked any further . When I contacted post office they said they could only talk to sender… yeah, good luck!!!

We have a “pre-backstop” arrangement already in place here in South of Irleand. Several logistics operators will receive goods north of the border and next-day to parcel-depot lockers in the south. About £3.50 for the luxury but can be 10x that for shipping or some cases where no option outside UK is offered.

G


#226

x1127

today will try to finish the wiring :roll_eyes:


#227

x1128
thinking about howto easy mount the enclosure later without drilling holes , I had this idea of glueing some really strong magnets inside.
be warned… it hurts when they suddenly stick together with some skin in between :sob:

anyway… these are the magnets I used
magnets

x1129


#228

x1131
eBay router module with no documentation - uhhh setup :thinking:

imin
ok I’m 'in… but setup in Chinese only :scream: :innocent:


#229

x1132
test eBay material for the BIG lipo GW charger

1 - https://www.ebay.com/itm/NEW-DC-DC-15A-Buck-Adjustable-4-32V-12V-to-1-2-32V-5V-Converter-Step-Down-Module/142701218660
2 - https://www.ebay.com/itm/DC-DC-CC-CV-Buck-Converter-Step-down-Power-Module-7-32V-to-0-8-28V-10A-300W-USA/323290043959
3 - https://www.ebay.com/itm/DC-300W-20A-CC-CV-Step-Down-Converter-Constant-Current-Adjustable-Voltage-Buck/112434679822
4 - https://www.ebay.com/itm/Battery-Charger-Discharger-Board-Under-Voltage-Over-Voltage-Protection-Module-MA/132406444865

x1133
and after some magic smoke I stocked a bit thicker wires :sunglasses:


#230

x1134

what E-Bling Bling to use … :thinking:

x1135

… and the winner (it’s programmable and you can switch it off)


#231

x1136

x1137

:roll_eyes: found an old display… just testing with the updated editor that has QR now


#232

You can try this one (similar module and 3+ times cheaper): https://www.aliexpress.com/item/Mini-IR-Pyroelectric-Infrared-PIR-Motion-Human-Sensor-Automatic-Detector-Module-AM312-Sensor-DC-2-7/32850541461.html

The ‘AM312’ modules use the AS312 PIR sensor (15 uA).