Oleksii
Member
- Joined
- Mar 18, 2020
- Messages
- 105
Hi all !
Owners of YR1035+ could see in Menu an entry "6. RS232" and probably wondered why is this for?
I figured it out !
(let me note that right here that Add: must be 00, otherwise data will be missing. And Baud can be changed, but it will not be saved when you turn device off/on)
If open it you will see this PCB:
There is once place where some chip supposed to be soldered, but it's missing:
If look on PCB traces you will see that 2 bottom go to USB D+ and D- (using 2nd PCB layer).
And 2 traces on left go to a main square chip. If touch one (which I marked by black as T) by oscilloscope, you will see some data transmitted each half a second.
I figured out that missing chip is well known CP2102, which is serial -> usb converter, when you connect it to PC and have virtual COM port appearing.
Here is more close look:
I marked KEY by red where chip KEY pin should be.
Here are pin names from datasheet:
Where to take the chip itself?
You can by a cheap converter (there are tons of such in market) and unsolder it, here an example:
On mine were not any marks on top (actually almost not visible white dot was), so it was hard to understand where is key pin after you unsolder it.
But bottom is such kind of mark on square corner:
Solder it manually (it was really hard as the ship is not for manual soldering):
and it appeared as serial port and I could read serial data !!! Wooohooo !
You can spot that I also soldered a small capacitor C11 on the PCB, which kind of needed according to typical schematic (C2 on it) and should be 0.1mF
That's all what I did.
Read data time!
Connect t USB and see a virtual com port!
I'm many years Linux user so here is my way how I did it. Example output data when I removed/inserted a 18650 cell a few times:
prepare port (some Linux magic) and see prints:
You can see some garbage at the end of each line. It's there indeed, some not ASCII bytes which I don't take care of. They should be some checksum, I guess.
Attaching also raw capture of the data, if someone needs it, find it in attachments.
I have to say that there no any software for it to read the data. I also tried read data using software for another IR meter - RC3563, but it cold not parse it correctly, so data formats are different.
Based on my success support of YR1035+ was added to Mega Cell Monitor and you can use it there.
Owners of YR1035+ could see in Menu an entry "6. RS232" and probably wondered why is this for?
I figured it out !
(let me note that right here that Add: must be 00, otherwise data will be missing. And Baud can be changed, but it will not be saved when you turn device off/on)
If open it you will see this PCB:
There is once place where some chip supposed to be soldered, but it's missing:
If look on PCB traces you will see that 2 bottom go to USB D+ and D- (using 2nd PCB layer).
And 2 traces on left go to a main square chip. If touch one (which I marked by black as T) by oscilloscope, you will see some data transmitted each half a second.
I figured out that missing chip is well known CP2102, which is serial -> usb converter, when you connect it to PC and have virtual COM port appearing.
Here is more close look:
I marked KEY by red where chip KEY pin should be.
Here are pin names from datasheet:
Where to take the chip itself?
You can by a cheap converter (there are tons of such in market) and unsolder it, here an example:
On mine were not any marks on top (actually almost not visible white dot was), so it was hard to understand where is key pin after you unsolder it.
But bottom is such kind of mark on square corner:
Solder it manually (it was really hard as the ship is not for manual soldering):
and it appeared as serial port and I could read serial data !!! Wooohooo !
You can spot that I also soldered a small capacitor C11 on the PCB, which kind of needed according to typical schematic (C2 on it) and should be 0.1mF
That's all what I did.
Read data time!
Connect t USB and see a virtual com port!
I'm many years Linux user so here is my way how I did it. Example output data when I removed/inserted a 18650 cell a few times:
prepare port (some Linux magic) and see prints:
read it then in more nice view:
You can see some garbage at the end of each line. It's there indeed, some not ASCII bytes which I don't take care of. They should be some checksum, I guess.
Attaching also raw capture of the data, if someone needs it, find it in attachments.
I have to say that there no any software for it to read the data. I also tried read data using software for another IR meter - RC3563, but it cold not parse it correctly, so data formats are different.
Based on my success support of YR1035+ was added to Mega Cell Monitor and you can use it there.
Last edited:
