Well…the RGBW boards are fundamentally flawed with the GND and RST pins reversed…because unfortunately half the circuit grounds go through that one pin. A bit more complex than just cutting a trace.
In essence, the sensor board is just a base config of a Mini Pro with a power regulator circuit that takes 7v-20v DC input and cuts it down to 5v and 3.3v for use. The Mini Pro is connected to the radio card with the 4.7uF capacitor to stabilize it. This leaves Digital inputs 3-8 and Analog inputs 0-7 free to use for whatever sensors you want to put on it.
There is no sketch specific to the board…it just provides the basic hardware setup to connect sensors to.
The RGBW board will be more specific to that function…one of the radio address pins is moved to #4 allow the #9 ~PWM output for controlling the LEDs to be used. Digital pins 7 and 8 are provided in case you want to add a sensor or two into the sketch…like a motion sensor or temperature, etc. The rest of the board consists of the MOSFETs and connectors for the LED strips.
The RGBW sketches are something that the guys on here developed…blacey and korttoma did the work there. This is just assembling and making the hardware compact. Plus giving a little bit of expansion.
I’ve done a v2 of the RGBW board…this time using a Nano so I could drop half the voltage regulator circuit and go with a more common pinout. The Mini Pro devices vary in the pin configs a little depending on manufacturer, but all the Nano boards I’ve seen were the same.
I’m also looking at some new designs using SMD components to make them less cluttered feeling. Not terribly happy with the v1 board designs since I was trying to keep size down for sake of cost, but made it difficult to see stuff or connect to.
Hope this answers some of the questions…