The WORKBENCH


#850

I have to study this more and build some POC… syncing a node’s RTC over LoRaWAN, or maybe another TTN’er have experience with this ?

Yesterday found some 3231 modules but without the memory chip (uses to much energy when reading/writing)

also found some cheap bitcoins online

interesting


(Jeff Uk) #851

Hummm Chocolate nom nom nom… no?! :frowning:


#852

Nice small module. If I see it right, there are only GND,VCC,SDA&SCL pin available.
No reset pin and no 32kHz or Int/SQW output. If you need one of these signals this module is not easy to use.


#853

oeps… missed that one :roll_eyes: . tnx

luckily I also ordered 4 of these with memory… thinking ’ maybe I could desolder the mem + led
ebay%203231


#854

That is the module I have used a few times. It does not have a reset pin but I never needed one. The 32kHz can be disabled and the SQW can be used as alarm output.


#855

indeed a nice accurate and very cheap RTC module.

lots of info and libs too :sunglasses:


#856

Meet the Tic-Tac Rak-Tracker

46

Naturally with the required pink battery from the Action store


#857

very ’ crea ’ Paul :grinning:

  • off course we want to see the opened IOT TTN TicTac enclosure… what’s inside ?

#858


and
39


#859

confusing picture because I think a NCR18650B would never fit in a TicTac box … this is a smaller battery/lipo (AAA?) (but same green colour)


(Jeff Uk) #860

Larger pack/bulk buy Tic-Tacs?! :wink:


#861

This box looks bigger, was also a lot of candy to eat


#862

detail

x828
x829

audio feedback (buzzer) when testing and placing the PIR sensor, remove jumper when done (silent alarm)


(Hix) #863

An alternative to ty-raps I use in such cases are water hose clamps with a screw band.
https://en.wikipedia.org/wiki/Hose_clamp

You can get them in varying sizes from gardening equipment stores or construction stores, either in galvanised or stainless steel versions. If you need more length, you can join two or more of them in ‘series’.

Hix


#864

I mentioned with a link : https://eshop.wurth.nl/Geperforeerde-montageband-met-randperforatie-MONTAGE-GATENBAND-VERZINKT-25MM/097225.sku/nl/NL/EUR/
With some bolts and nuts M4 / M5 you mount in a few steps to each pipe.


#865

x830
read the position of a 3-way on-off-on switch with a single arduino pin


#866

x831
Micro SD Wemos D1 Mini Data Logger Shield+RTC DS1307 Clock

I don’t have a use case for them (yet) but they are so cheap:sunglasses:


(Jose Marcelino) #867

New toy

IMG_0176