Thanks in advance, I'm having trouble with understanding how this tiny chip works. We have a RC transmitter (ct6b) and have removed one of the 5v pots from the device and want to replace it with a digital one (MCP4018 5k) to control the rx output.
The code i am using is:
// Example 20.1
int dt = 2000; // used for delay duration
byte rval = 0x00; // used for value sent to potentiometer
#define pot_address 0x2F // each I2C object has a unique bus address, the MCP4018 is 0x2F or 0101111 in binary
// sends values of 0x00 to 0x7F to pot in order to change the resistance
// equates to 0~127
for (rval=0; rval<128; rval++)
Serial.print(" sent - ");
I have wired it up and I left with two wires going spare, the Wiper and the A or INPUT. My question is am I heading in the right direction altogether and if so how would i wire it up.
Image of chip diagram/pinouts: http://i1.wp.com/tronixstuff.com/wp-content/uploads/2010/10/mcp4018sch1.jpg?resize=500%2C363