Catalin Tabirca Note-Blog

Smart Home – Basic setup

4 November , 2024 catalintabirca Comments off

With all the tehnology advances, whete are a lot of things that can be remote controlled.
Let see a real life simple smart home.

The most used in a smart home:
– internet connection monitoring
– remote controller lights, sockets, drapes, locks
– remote controlled vaccums, cars,
– dvr/nvr. home video recording and monitoring
– air sensors (temperature, humidity, co2, dust, etc)

All of the above have many brands and tehnologies, so we will need a “server” to centralize them.

Some brand offer remote control with an app, but that need internet acces, and sometimes a company stop suport for some products. So we have the option to change the software on the devices, and control them with some local software. We have Tasmota, espHome, OpenBK

Communication protocols used by the devices: wifi (http, mqtt), zigbee, z-wave

The most popular centralize controll software is Home Assistant.
Other alternatives are: HomeBridge, OpenHAB, ioBroker.
We will need a small computer capable of running linux.

Categories: Uncategorized

Sonoff Basic R2 modifications

30 March , 2020 catalintabirca Comments off

Power separattion

Remove black wires and output screw connector
Drill a hole next to the relay, so the that you can connect the output screw connector next to the input connector.
Solder a wire fron the output of the relay to the pin from the drilled hole

Additional GPIOs

Remove led and solder 2 pin header, center pin is 3.3v, pin closes to button is gpio13 thru a transistor, default is hi. You can use it for inverted output only (relay, pwm)
{{no picture, sorry}}

Solder wires to gpio 4,14 and 16. they are in the corner of the chip, so easyer to solder.
{{no picture, sorry}}

Solder wire to io2 on the backside
Solder wire to 5V output, you can use positive pin of the big capacitor next to the relay, next to diode D4 on the back of the board

Use the 4 test point header to breakout 3.3v, RX, TX and GND
{{no picture, sorry}}

Use the 5 test point header to breakout more gpios and power, with 2 rows of 5pin headers

First ROW
GND – ground
K_P – line direct from gpio0
LED – unused but connected to R13 on the back of the board. remove R13
KEY – connected by gpio0 thru R14 (remove R14) and to onboard button
3V3 – 3.3 volts

After removal of R14, the onboard button will not work anymore
Solder the wire from gpio2 to testpoint KEY, this will make the onboard button control gpio2
Solder wire from gpio14 to LED testpoint

Second ROW
Solder wires from gpio4, gpio16, 5v line, an short 2 pins with the ground testpoint

Disclaimer!

The power source in the Sonoff is quite weak, so don’t abuse it. I have one running 24/7 with one additional relay and a DHT11, controlling 2 light bulbs. work great

Categories: IOT, Software, Sonoff, Tasmota

Tanki Online – joc multiplayer direct in browser

17 September , 2010 catalintabirca Comments off

A pornit ca un joc in flash, alt joc pentru copii, dar acum este foarte avansat.
Tanki Online arata si se comporta ca si un joc normal, dar se poate juca direct in browser.
Joc 3D, foarte addictive.
tankionline1

Originar din Rusia, bazat pe o platforma inovativa, este un joc cu aproape 50000 de jucatori.
Sunt mai multe servere pe care se poate juca, pe fiecare server fiind create jocuri, free-for-all sau in echipa. Daca doriti puteti crea chiar voi o runda.

Jocul este unul de evolutie, incepi cu un rang si te lunpi sa cresti din ce in ce mai mare. Odata cu trecerea la un rang mai mare se pot cumpara armuri si turete mai bune si iti poti chiar vopsii tancul in diferite culori, unele oferind chiar si protectie importiva unelor arme.

Prea mult scris si prea putina joaca, faceti-va cont si o sa vedeti cu ochii vostrii. Pe mine ma gasiti cu nickname-ul Zatarra

Tanki Online