So I created this doorsensor, it's supposed to be put in a hole inside the door.

You need to drill a 20mm hole in the door and then put this baby in there.

It was made to fit a HopeRF 433mhz transmitter, a ATTINY85 chip and a microswitch and a CR123(A) battery!

Bill of materials:

- HopeRF 433mhz TX module
- ATTINY85 chip
- Microswitch (hole distance 6.5mm, I think that's default)
- CR123(A) battery
- An old battery clip you can remove the internals from to put into this model (glue them in or whatever fits your purpose)

The ATTINY85 is running RH_ASKTiny (check their github for the library) and tinysnore. This can be run on a chip running Micronucleous or just without bootloader, pick your poison! I have the data pin connected to ATTINY's pin output 4 (which is physical pin 3 next to GND) The code is below:

#include <tinysnore.h>

#include <RH_ASK.h>

#ifdef RH_HAVE_HARDWARE_SPI

#include <SPI.h>

#endif

RH_ASK driver(2000, 3, 4, 0);

void setup()

{

for(int i = 0; i < 3; i++)

pinMode(i, INPUT_PULLUP);

driver.init();

}

void loop()

{

const char *msg = "DOOROPEN";

driver.setModeTx();

driver.send((uint8_t *)msg, strlen(msg));

driver.waitPacketSent();

delay(200);

driver.setModeIdle();

delay(200);

snore(8000 * 3);

}