/diy/ - diy general

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OP here, just for the bumps.

Currently I am trying to build a laptiming system for motocross, because professional solutions are fucking expensive.
Process is bretty gewd.
Logic is quite finished. Only thing I would need to improve accuracy a lot would be an inductive circuit, which is in research now.
Maybe have to upgrade to a bigger microcontroller or seperate processes on different ones. Will see how the project evolves.

in short: in basically just works like RFID, except that I need a reading range from about 1-1,5m.

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>>52540921
Here's pic of my first transponder prototype.

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>>52540936
Also added a display yesterday.

As frontend I got a rpi2 which runs a nodejs server and database shit.

My rPi Zero came in the mail the other day, I'm going to pick up a broken Gameboy game cartridge and pop it in there along with an ESP8266. Just a case for now, it will be able to draw power from a GameBoy

>>52541124
>My rPi Zero came in the mail the other day
still not available in german shops. fml.

>>52540685
>>>/diy/

>>52541141
no. /diy/ is ded

>>52541138
I'm in the US, it was 6 in the morning and I got an email saying they were in stock from a UK store, so I picked one up while I had the chance

Just ordered a Pi 2,wifi,cam.
want to build a mobile remote surveillance bot.
seems costs are higher than i anticipated

>>52540685
I really want a project to work on, but I have no ideas and no space.
I'd love to work on something I could use, like you lap-timing. I would want it to feel worth it, you know?

>>52540936
Ah, you're simply using that 2.4Ghz transceiver module? Mine finally came from China but haven't played around with them yet.

>>52541157
Pi's are either UK, or china knockoff

>>52541219
I'm not talking location of manufacturing but the location of the store I bought it from.

>>52541189
yes with that library:
https://tmrh20.github.io/RF24/

Thinking about switching atleast the transponders to simple C code just for learning purposes. Not sure though.

>>52541270
What I want to do is reverse-engineer some of the 2.4Ghz consume devices I have lying around, many use the same IC and there's already software for sniffing.

The ultimate goal being, creating a wireless keylogger that catches and interprets traffic from a wireless keyboard.

I got arduino and pi2 and got no time to do anything i also lack any practical ideas

>>52542412
take an old shitty rc car and connect your pi

mobile linux server in no time

>>52541146
RIP

Currently waiting for my Lattepanda to arrive sometime around April-May. Planning on turning my PS2 Slim case into a HTPC with it.

>>52542433
god damn genius1

>>52541368
http://samy.pl/keysweeper/

Would it be feasible to build a DIY UPS?
* Bypass circuitry using relays
* Rectifier
* Battery charger
* Inverter
* Grid sync
* Current and voltage monitors

Possibly some power factor correction circuitry.
Controlled by a RasPi with a web interface and custom SNMP server, and some AVRs for more specific tasks.

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Building robot for the Navy

(robot not pictured)

Working on a laser etcher to etch my own PCBs for guitar pedals. Smoke weed about it.

>>52540685
https://www.youtube.com/watch?v=Nei-yaAHTpY&feature=youtu.be