Re: The joy of FORTRAN

rbowman <bowman@montana.com> wrote:

   Looking at building a small FM transmitter wired to my mail-box.
   Being right at the road, and a bit away, it's useless trying to do
   image-ID and there is no hope of getting power out there.
>

>
Just for an alert? How far? I'd probably use a couple of Picos or even
Arduinos with nrf@$L01 modules.
 
https://howtomechatronics.com/tutorials/arduino/arduino-wireless-
communication-nrf24l01-tutorial/
 
and a PIR to detect when the box was opened.
>

PMFJI.

A reed switch with a small permanent magnet attached to the door to
actuate it can do the detection very simply, cheaply and unobtrusively.

<https://en.wikipedia.org/wiki/Reed_switch>

In this instance, old tech can be best.

 
https://learn.adafruit.com/pir-passive-infrared-proximity-motion-sensor/
using-a-pir-w-arduino
 
The receiver in the how could blink LEDs, buzz, or whatever. For real sex
you could use neopixels for a pulsating rainbow effect.
 
https://www.adafruit.com/category/168

--
^Ï^.    Sn!pe, PTB, FIBS         My pet rock Gordon just is.