In our last post we talked about wanting explore the use of two I2C based io expanders in an old school application. If it werent for the fact that there was a readymade lcd library for the mcp23017 I would have swapped the io expanders. No Pull-ups, No Pulldowns and no decent documentation on the… Read more »
Posts Categorized: Arduino
I was going to explain how we got here but. Nah. It is what it is.
Is this thing on?
Things are different. In the 2+ years after I gave up on making things for a living a lot of things have changed. Things on my personal radar…. The price points for adding wifi for Q<1000 is not $15. It’s $3. The Midi Manufacturers Association finally put 3.3v into the hardware standard. The Non compete… Read more »
Things are Different In 2012 I was struggling to put together a stm32 based wireless datalogger using leaflabs libmaple and a $20 wifi module. I had to write most of the code myself because libmaple was based on arduino-0022 and most of the wifi libraries made extensive use of the new classes available after… Read more »
Background. I was asked to put together a 2 day class on the internet of things at PNCA so I suggested that we try out the Adafruit huzzah. while I was looking for it I came across the Sparkfun Esp8266 “thing” and the Esp8266 dev board. I used the Sparkfun Esp8266 dev board to implement a… Read more »
/* Ping))) Sensor This sketch reads a PING))) ultrasonic rangefinder and returns the distance to the closest object in range. To do this, it sends a pulse to the sensor to initiate a reading, then listens for a pulse to return. The length of the returning pulse is proportional to the distance of the object… Read more »
melodyDetector-140809-James Here’s my updated code.
It would be great if we could have a little group show at PNCA. I could bring this piece and the last class project.