The previous post: Interim Solution to Ethernet_J11D Failure led to a Eureka moment for me.  I was running my daily slog, not in the bath like Archimedes, but it occurred to me that other problems might be solved by using the NETMF API provided by GHI Electronics instead of their newer Gadgeteer SDK.  I hit a dead end  with the […]

The Seeed Pulse Oximeter is a monitoring device that measures pulse and noninvasively detects oxygen saturation of the blood.  This post demonstrates use of the Pulse Oximeter in a .NET Gadgeteer application. Plug the PCB module into a mainboard socket that has the U label.  This example uses socket number 8 on the GHI Electronics Fez Spider mainboard.  (Do not […]

Translated by Mike Dodaro from the Italian version by Marco Minerva We continue discussion of the graphical controls for the .NET Gadgeteer display. This time we implement the CommandButton, that is the classic push-button. The code for the CommandButton class is as follows: The CommandButton inherits from Border and defines four properties, with which you can specify the color of an […]

You can use the classes of the Gadgeteer.Interfaces namespace directly in code, instead of inside a module driver.  This example uses the Gadgeteer.Interfaces.DigitalOutput interface.  The voltage on this logic circuit, in the high state, is enough to light a LED.  Later we’ll use a relay in the same circuit to implement a more interesting application.  (See also the Light Sensor, which […]