Rudderfeedback Sensor Robertson/Simrad RF300

[xfactor99]

How bad is the latency?   Maybe the latency from wifi is a bigger issue?

You could for example connect your rudder feedback arduino to the usb of the tinypilot eliminating wifi.

Otherwise, what you want is a DAC.   I'm not sure you need to worry about voltage 64kh, unless you experience inaccuracy over temperature??   The rudder stops should be set to have a few degrees extra in case of this.

To make a DAC with arduino, the simplest way is to use PWM output varying duty cycle (not frequency) with rudder angle.     I would use fastest frequency po.ssible and low-pass filter it with say 10k and 0.1uF capacitor as a starting point and feed this into the rudder feedback.   You might power this arduino from the rudder feedback pins of the motor controller.

Hi Sean,

thanks for your reply.

I  dont´t know how bad the latency is, but I yust feel better if the sensor-data got to were they are used. Also for safty, beside
the end of rudder switches I´m using.

I also hope to have an verry accurate Ruder-feedback for further developments of Pypilot (absolute and learning) ;-)

I have ordered an MCP4726 witch is an 12-Bit DAC with an Pin for Voltage-Reference (1US$) wich I plan to connect to the TP-Arduino.

I modyfied my Rudder-NMEA.ino maps 80 degrees of rudder movement (2600-4200Hz of the RF300) to 0-4096 PWM´s. So this is woking perfect (high precison and resolution) when y check it at the serial monitor.

So it looks like everything is on a good way
Save sailing
Andreas