The TPL5111 breakout is best when you have an enable pin you can control, the TPL5110 is best when you are able to ‘break’ the power input line to place the TPL5110 between the power supply and Vin.
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I have this idea of a ’ LoRaWAN enhanced’ Piggy Bank so children can see their savings on their iPad/mobile…
so I need a coin mechanism to detect what coin is inserted.
something like …
wow… they are big … 
- https://www.ebay.com/itm/Multi-Coin-Acceptor-Selector-Slot-for-Arcade-Gaming-Vending-Machine-Game-Control/163018818884
- https://www.ebay.com/itm/Multi-Coin-Acceptor-Selector-Mechanism-Vending-machine/250593770728
some analog versions 
- what if I just weight the moment a coin is inserted ?
every coin has a different weight… and store (and transmit) the total
testing the principle 
are these accurate enough ?
what comes after the 18650 (3400 mAh) ? the 26650 (5200 mAh) - test
dc/dc 5.1v power supply with 2x balanced/protected 26650
I’m moving my electronic (hobby) workshop to another room and I was looking online for material to make my own (bigger) workbench.
then I found this ‘used’ office outlet, just 10 minutes from my home and buying a used desk is almost cheaper then building it.
Anybody who needs (NL) an affordable hobby worktable… look
- so I bought 2 … now I get an 3.20 x 0.80 workbench …
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Have you completed the SHT31D Rocket Scream low power extra long life V 2.0 LoRaWAN node?
Can you share your experience with the SHT31D Sensor?
this morning the test node died… for real 
so yes I finished the rocketscream lowpower node test
result : 290 days on a single AA battery transmitting temp / framecounter / humidity every 5 min.
but that test was done with a BME280 sensor
the node died when the voltage dropped to 1.17 V last night
the V2 version (the one that’s available now, will even last a bit longer)
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I meant The WORKBENCH part 1 - #949 by BoRRoZ
the new node with better SHT31D Sensor.
i read the BME280 is not so good
so I thought you already have experience with the SHT31D Sensor
ah ok that one … sorry no… not finished yet
the BME280 worked fine indoors, but I think it’s getting very fast to 100% humidity outdoors
very good service I experienced on eBay.
I was not completely happy with the product I bought and the shopowner understand my problem and replaced them very fast, thank you mr. Hunk Lee !
So If you need (big) LIPO’s I can recommend A-OK battery !
the problem when you just can’t throw away working equipment … 
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Get yourself a S.O. (significant other), she/he will take care of it 
uhhhhhhhhh … 
selected components for power unit mobile outdoor 4g gateway
can provide 5v and 12v for min. 48 hours continue