How-to convert a cheap IKEA Samla box into a Maker-box

Cheap box for makerstuff converted into lockable case

IKEA samla box
I really like those cheap IKEA Samla boxes. They are very well suited for a lot of stuff especially when you move makerstuff to the makerspace or friends. Available in different sizes and stackable (you can stack different sizes on top of each other) and a separate lid you can also store stuff at home.

But one thing what was always annoying me is that you can't fix the lid to the box or even more could lock the box. So I designed three cheap ways to make the box lockable and secure.

Old PC screws, wire an rawlplugs
Velcro to join lid and case together
One way is to take some old spare PC screws and wires, drill holes into the lid and case and join the wire and the rawlplug with a screw. You then can secure the lid to the box by pushing the rawlplugs through the lid and box. In order not to loose the plugs you can secure them with wire and a screw.

Suitcase lock
Much simpler but a little bit more costly is to use some velcro. A velcro tap on the lid and on the box connected by a strip of velcro secures the lid to the case but this solution is less rugged.

If you have to secure the box against unwanted access, just drill a hole in one side big enough to apply a cheap little suitcase lock. The other side is secured by a keychain ring. Et voilá. Stuff secured.


Power supply for remote sensors

Presentation: How to supply power to microcontrollers/ (remote) sensors with low dropout (LDO) voltage regulators and batteries

"Classic" 7805 Voltage regulator
On August 5 I had a short presentation at the Makerspace Attraktor in Hamburg on how to supply independent power to devices like standalone microcontrollers or (remote) sensors.

 The talk gave some comparison about different low dropout voltage regulators which are by design very well suited for battery powered devices. Decision finding on what parts are most suited and design considerations for independent sensors were explained detailing a remote temperature sensor project I'm working on for about two years now.

XBee temperature sensor

You can find the presentation (in english) here

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