prototype
Wednesday, October 25, 2017, 06:00 PM
This morning I used the Adafruit perma proto board for the first time and really liked it. It makes wiring so much easier because rows of pads are tied together. This means each pin of the Huzzah is brought out to multiple pad holes. At first it didn't work when I plugged the relay into the proto board. Eventually I found that the relay input had 4.5 volts floating on it when not attached. The huzzah max is 3.3 volts. I put a 2N2484 NPN on the input with a 1K resistor driving the base from the Huzzah GPIO 15. This did the trick and it all worked perfectly. This is now ready to go into the ceiling. I installed misterhouse on the Node Red Raspberry Pi. I'm going to use this to experiment with voice recognition by Alexa and voice feedback from IBM Watson.
Dinner tonight was Spaghetti with Cheese and 14 Hands Red blend wine which was great.
  |     |  
( 0 / 0 )