Put the Igo to the Navitel folder on the flash.
Rename Navitel.exe to Navitel.old.exe
Rename Igo.exe to Navitel.exe
Put the following to the sys.txt:
https://gist.github.com/martonmiklos/6f35582765ecb1957ab7d66b79c23e12
I have bought a sunken PH1 around a year ago, managed to get it fly, but it is not able to see the GPS signal properly.
I have hooked up the board to my saleae and I have wrapped this tool to read the Saleae logic analyzer output CSV:
https://github.com/aanjhan/ubx
It turned out that it see some satellites, but the link quality is very poor: CNO (Carrier to Noise ratio) was mostly 0 and sometimes 28-30.
So I have replaced the ublox receiver module (to an uBlox 6T), it see more satellites, with better CNo (27-33) but still no signal lock in the system.
I have ordered today a ANT1575-2540A from the TME and we will see.
There is a ALM-1912-BLKG in the antenna path, but I have not been able to source it yet. And my hopes to the antenna is pretty high :D.
I have hooked up the board to my saleae and I have wrapped this tool to read the Saleae logic analyzer output CSV:
https://github.com/aanjhan/ubx
It turned out that it see some satellites, but the link quality is very poor: CNO (Carrier to Noise ratio) was mostly 0 and sometimes 28-30.
So I have replaced the ublox receiver module (to an uBlox 6T), it see more satellites, with better CNo (27-33) but still no signal lock in the system.
I have ordered today a ANT1575-2540A from the TME and we will see.
There is a ALM-1912-BLKG in the antenna path, but I have not been able to source it yet. And my hopes to the antenna is pretty high :D.
My father bought a second hand high power lamp powered by 3 18650 cells.
Unfortunately after installing the batteries there were no way to turn it off.
I have opened up with: "worst case I will put a switch to it" in my mind.
The circuit inside is simple: basically an SOT-23-6 IC marked with 819L 48 a power P fet in SO8 package and some current limiting resistors:
![](images/PB090009.JPG)
After doing some google fu I ended up on this website:
http://go-radio.ru/remont-nalobnogo-fonarya.html
It turned out that the IC is a Shenzhen Fuman Elec FM2819 The datasheet is only available in chinese, but pushing through the google translate did not helped either.
I have noticed one thing: there were an unpopulated 0603 place parallel with the pushbutton. The russian blog mentioned above that he have had found a cap in the box fallen from the same place. I have followed his advice put a 0603 100nF cap there and now the lamp works as expected.
Unfortunately after installing the batteries there were no way to turn it off.
I have opened up with: "worst case I will put a switch to it" in my mind.
The circuit inside is simple: basically an SOT-23-6 IC marked with 819L 48 a power P fet in SO8 package and some current limiting resistors:
After doing some google fu I ended up on this website:
http://go-radio.ru/remont-nalobnogo-fonarya.html
It turned out that the IC is a Shenzhen Fuman Elec FM2819 The datasheet is only available in chinese, but pushing through the google translate did not helped either.
I have noticed one thing: there were an unpopulated 0603 place parallel with the pushbutton. The russian blog mentioned above that he have had found a cap in the box fallen from the same place. I have followed his advice put a 0603 100nF cap there and now the lamp works as expected.