Node-RED Node hardware

Mcp3008 is 10bit adc converter with SPI interface. This node-red node allow to easily interface raspberry pi with mcp3008.

Raspberry SPI interface

See http://elinux.org howto activate SPI on raspberry use MOSI MISO and SCLK gpio pins. select CE0 or CE1 with the edit node to adress two mcp3008.

Channels on mcp3008

Select eight single channel or four differential channel with the mcp3008 edit node.

Intervall time (in ms)

input intervall time, so the node output the mcp3008 A/C all the intervall time. Or just one time if intervall=0.

Start and Stop

Just push msg = {payload : start | stop} to start | stop the flow.