@richard-imrie Tried to changing TX/RX pins - nothing happen :/?ÿ

I think the problem is inside sonar - this circuit closing, which I showed at the end of the video worries me. But I'm not an electronics engineer and...

@richard-imrie Null modem must be there, because it's between 2 female DB9 connectors

@richard-imrie I've tried to limit RTK to 1Hz and through NMEA transmit only GGA message. I've tried also to change baud rate (I checked the values f...

You are right, that 20Hz in this case is an exaggeration, but higher recording rate would make it possible to average measurements from i.e. every hal...

Ok, sending depth from sonar to the Leica Data Collector works! 😀 It's a pity, that it's sending it only in 1Hz rate :/?ÿ Thank you @Richard-Imrie s...

Thank you for suggestion! 😀 I didn't try to send the depth to the controller. I'll try and let you know if anything came out of it. Null modem is al...

Thanks everyone for help! :D?ÿ ?ÿ I've already bought original solution from Leica (GEV71). I've found it on OLX (local advertising site) in a price...

@eric-kara Thank you so much! I would never have thought of that. Thanks! :D?ÿ ?ÿ Do you know maybe the reason why there is such a difference? ?ÿ ...

GEB171 have 2 connectors - LEMO and that "U", about which you are writing :)?ÿ Of course I want to buy LEMO female 5 pin 1B connector and solder cab...

@micheal-daubyn-2 Thanks, but that 1st link is for South, not Leica, so I'm not sure if it will be compatible. 2nd link - there is 5pin 0B LEMO, I n...

@jim-frame If I correctly read your schematic, 5-PIN LEMO 1 SHELL MALE PLUG is the same side of cable, which I've photographed in 1 post? And the 0-S...

Thank you all guys for help :D?ÿ Writing "car battery" I've thought about something like this (it weights about 2kg): ?ÿ Sergeant Schultz how do y...

Thank you for the video. It will be very helpfull when soldering 😀 ?ÿ But does anybody know to which pin I need to solder "+" and to which "-" from...

Hi! And what was wrong with your TCRA??ÿ ?ÿ ?ÿ

@john-putnam Thanks! Ordered GMP101 😀 

@jim-frame Does your TCRA1102+ track that GMP101 miniprism correctly? On what distances it works well?    I have TCRA1101+ and wondering i...

@mike1202 I've ordered the same Sandisk CF 32MB card so I will see if it works. Is it possible that something is wrong with TCRA?