- anemometer, wind vane, rain gauge
- temperature, humidity, atmospheric pression, light intensity
- datalogging on sd
- sap velocity sensor
- 180 rgb led strip, driven by the sap velocity sensor
The context is an art installation for the Laab (http://laab.ovh.org, in french).
As I ran out of free sockets, I had to move some sensors to a DL40 module (thanks to taylorza’s DL40IO firmware), which is the white permaboard to the left. The front one is an homemade sap velocity sensor, design based on the thermocouple sensor but not quite. Everything else is standard gadgeteer modules, save for the ledstrip interface using one MOSI pin for (fake)-SPI driving (search for ws2811 ledstrip in codeshare).
On a technical note, I struggled a LOT with the RTC, because my soldering skills couldn’t achieve the needed replacement of the capacitors (guys, those smt caps are SMALL), so I just did the crystal. And if you don’t replace the capacitors you have to be extra-cautious with everything you will use on socket 5 because of the RTC’s XI32/XO32 pins which are pin 3 and 6 on socket 5. Even if you don’t use those pins, just gadgeteer cables on socket 5 longer than 5cm will block the RTC, for example (I suppose it is due to the added extra capacitance of the wires which are too much for the RTC pins). Also using RTC pretty much seal off socket 5 use because almost all modules use pin 3 or 6.
Will post code and schematics if interest arises.