The BARGAIN basement part 1

found an interesting bargain you like to share ?
this is the central place where you can link tips about bargains.
(diy electronics components, tools, gateways, chips, antenna’s, cables, kits, measuring equipment, sensors, lora related things)

The BARGAIN basement part 2
The BARGAIN basement part 3
The BARGAIN basement part 4
The BARGAIN basement part 5
The BARGAIN basement part 6

this is a user topic, if you want to promote your commercial product your welcome in


Handheld Digital Spectrum Analyzer RF Explorer 915 Mhz - €53,40

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Nice Topic!

Just my 2 cents (well actually $ 3.60): here a nice small ESP2866 “proto” board if you want to create an ESP8266 + RFM95 node. Anyone cares to create an RFM95 adapter plate for it? (probably I should call it “base plate”?)

A very minimal description is found over here. and some more: [1], [2], [3], [4]

Oh and by the way: the result will not be CE certified

Hey Batilan,

Have a couple of those. Work great with rfm95 and was thinking to make a shield for it (same as the ttl board).
Probably start at it this weekend.



NEO-6M GPS Module € 5,38

little node antenna

*** update**
that little node antenna is not very well matched @ 868.1 Mhz ( VSWR 4.42:1 ! )
so NOT recommended for long range

this one is much better (1.158:1)


868MHZ/915MHZ / GSM / 3G Small Sucker Omnidirectional 7 dBi Antenna $3.09

perfect little gateway antenna

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very sharp ‘needle’ probes

I like them :sunglasses:

solves your shielding problems

and you can solder it :sunglasses:

small solder on antenna:

just 99 cents for any freq you might need… looks better then just a piece of wire :slight_smile:

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Made a first version of a breakout board for it.
Hope it wil work.

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mobile power :sunglasses:

oh… and to charge them you need something like** this**

activate your node cheap and easy :sunglasses:

perfect waterproof node enclosure


Unfortunatly US?

what do you mean ? they ship world wide, and there are many sellers
( I’ve used one with a transparent top for a balcony wifi temp sensor )

and I ordered some of these (black/grey) ‘node’ boxes :sunglasses:

antenna on one side and temp sensor on the other ?

  • this seemed to be an ‘email only’ action … sorry*

Tip I got yesterday in Enschede from joris:

Cheap & good outdoor enclosure (for gateways and such), 12€


I was searching for this kind of enclosure for external gateways, looks excellent and cheap will order some

I’m also thinking adding to my RPI gateway a SI7021 sensor ($3) in the box to monitor enclosure temperature and humidity worth checking humidity is not going into enclosure :wink:

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Monitoring some environmental factors is a very good idea I think.

Nice idea I was thinking to monitor into the GW enclosure but it’s easy to add another SI7021 to monitor external temp/hum also!