Raymarine Gyro Sensor Upgrade for $25

[Martenhaven]

Hi! did you manage to test the TOOGOO(R) 1PCS ENC-03RC Single-axis Gyroscope Analog Gyro Module? Are there any more 5v output altnernatives?

[sebba]

I didn't have it yet, I'll order next days...
maybe becrux have more info

[becrux]

Mine won't be delivered until some time next month. Meantime I have to find out what my autopilot expects so I can make an interface.

[sebba]

what AP do you have?

[becrux]

It's an Autonav made by Paul Wagner. He hasn't been active lately, but at least he is fairly local to me. Just over the border in Canada. No spec sheets online.

[seandepagnier]

sending gyro over nmea adds lag which degrades performance. Maybe it works, but you will consume more electricity, wear out the drive sooner, and not steer as well.

Much better the autopilot reads from the sensors directly without an arduino inbetween, and can also read all the sensors and use all 3 gyros as well as accelerometers to improve sailing performance. I don't think you can send this data over nmea which is an outdated protocol.

[sebba]

Who said about sending gyro signal through NMEA?
AFAIK APs read an analogue signal, 2.5v +/- 2v approx, from gyro sensor, single axis.

In my schematic I used a digital gyro sensor, not an analogue one, because I haven't an analogue one. The Arduino board is used to read the digital information and translate it in analogue.
I used the DAC converter for better results but I think could work even without, through a PWM output pin.

Regarding the speed, Arduino is much faster that needed so no lag.
The main advantage when use a digital sensor with Arduino is you can make adjustments for sensitivity and so on, to obtain the best results. Of course, you can do that only on field, by trial and error.
An analogue gyro sensor is much simpler but you can use it just like it is, no adjustments available.

[Martenhaven]

Hi,

I just got the ADXRS624Z in, now looking for some input on how to connect. I found an "archived site : https://web.archive.org/web/20160502...gyro-raymarine

Does anyone have a pic of the installed ADXRS624Z, an overview of where to connect the power supply or any other input that can help me to proceed?

Thanks so much!

[sebba]

you have the chip or the evaluation board?
anyway, go here, you'll find datasheets for both: https://www.digikey.com/product-deta...24Z-ND/2342813

[Martenhaven]

Hi, I have the evaluation board, got it from digikey. Trying to figure out now which wires need to go where and from my raymarine s3 computer and how to position it (what is upside down) Already have a 12 - 5 vdc converter.
Br

Marten

[sebba]

in the end you need 3 wires:
+5v, the power, use a voltage regulator if you don't have 5v in your raymarine.
rate output
GND

I don't know the S3 model, try to find the connector for the original gyro sensor. There you should have 3 pins but check them first

[sebba]

take a look here, too: https://jibelog.wordpress.com/2014/0...-21th-century/

regarding the position, search the chip's datasheet, I didn't read it but it should be specified

[Martenhaven]

Thanks! I've looked at the docs and these are my thoughts on the wiring (see attached). Could you take a look and tell me if I'm on the right track?

Marten

[sebba]

Your "data raymarine" yellow wire should be on pin 2 rateout, not 7
Pins 8 and 12 are both on gnd, this is ok.
Same, pin 13, for 5v power is ok

[Martenhaven]

Thanks!!!

Updated the drawing for anyone who want to use the EVAL-ADXRS624Z for their Seatalk (ramarine) autopilot. Now I need to just figure out which side should be up and wait for launch day.