Hello,

 I was helping buddy of mine.. He has this Matek F405 STD  FC with a Spedix 30A 4in1 ESC.  Everything is hooked up and is running.
Only thing is missing is the current and the volatge reading dispaly on BF OSD.. I look at the FC, there is 2 pads labled CURR and VCC.  
My main question is can I just solder the VCC pad from the FC to the 4in1  ESC? There is 2 VCC pad on the esc and 1 of is just for 5V.  And the CURR pad? Where can I solder this to? I probably dont need it.  All he want is see some sort reading on the battery when he's flying..  Thank you.

Correct, just hook up the VBAT, +5V and "-" (GND) pins from the 7-pin connector of the Spedix 30A 4in1 ESC to the Matek F405-STD as shown below. The Spedix ESC doesn't appear to have current sensing capabilities  so you won't be able to put current usage/draw in the OSD. On the Matek F405 you will just have to leave that disconnected.

(15-Feb-2020, 02:40 PM)SnowLeopardFPV Wrote: Correct, just hook up the VBAT, +5V and "-" (GND) pins from the 7-pin connector of the Spedix 30A 4in1 ESC to the Matek F405-STD as shown below. The Spedix ESC doesn't appear to have current sensing capabilities  so you won't be able to put current usage/draw in the OSD. On the Matek F405 you will just have to leave that disconnected.

Ok let me get this straight before I attempt.  There is 5volts pad at the front the ESC.. So I need to connect the + on the ESC side to CURR pad on the FC and - ground to any common ground correct?

(15-Feb-2020, 05:07 PM)klnyc Wrote: So I need to connect the + on the ESC side to CURR pad on the FC and - ground to any common ground correct?

No, that's not correct.

On the ESC there is a 7-pin socket. Looking from the top with the socket on the top edge as per the manual, with pin #1 being on the left and pin#7 being on the right, this is how you need to connect it.

7-Pin ESC Connector -> Matek F405 Pads
=========================================
Pin #1 / GND ("-") --> G (next to ribbon connector)
Pin #2 / 5V ---------> 5V (next to ribbon connector)
Pin #3 / ESC1 -------> S1 (next to ribbon connector)
Pin #4 / ESC2 -------> S2 (next to ribbon connector)
Pin #5 / ESC3 -------> S3 (next to ribbon connector)
Pin #6 / ESC4 -------> S3 (next to ribbon connector)
Pin #6 / VBAT -------> VCC (bottom of board)


The "Curr" pad on the FC will remain disconnected because there is nowhere to connect it to on the ESC board.

(15-Feb-2020, 05:27 PM)SnowLeopardFPV Wrote: No, that's not correct.

On the ESC there is a 7-pin socket. Looking from the top with the socket on the top edge as per the manual, with pin #1 being on the left and pin#7 being on the right, this is how you need to connect it.

7-Pin ESC Connector -> Matek F405 Pads
=========================================
Pin #1 / GND ("-") --> G (next to ribbon connector)
Pin #2 / 5V ---------> 5V (next to ribbon connector)
Pin #3 / ESC1 -------> S1 (next to ribbon connector)
Pin #4 / ESC2 -------> S2 (next to ribbon connector)
Pin #5 / ESC3 -------> S3 (next to ribbon connector)
Pin #6 / ESC4 -------> S3 (next to ribbon connector)
Pin #6 / VBAT -------> VCC (bottom of board)


The "Curr" pad on the FC will remain disconnected because there is nowhere to connect it to on the ESC board.


Man we ripped it out again and the VBAT doesnt have any cable on it.. We find one and plugged back in soldered to VCC on the FCC.  Here is the image 

In that case, for the VBAT connection you can just piggy-back solder a wire onto the main "+" pad on the ESC where the LiPo pigtails connect to and then connect the other end to the VCC pad on the FC. Not such an elegant job as using the pin in the connector, but it will still do the same job.

(15-Feb-2020, 06:15 PM)SnowLeopardFPV Wrote: In that case, for the VBAT connection you can just piggy-back solder a wire onto the main "+" pad on the ESC where the LiPo pigtails connect to and then connect the other end to the VCC pad on the FC. Not such an elegant job as using the pin in the connector, but it will still do the same job.

thank you for the help buddy. really appreciated ??

If you have a climped wire, you can just add it to the connector harness. You must have similar harness around?

(15-Feb-2020, 07:51 PM)voodoo614 Wrote: If you have a climped wire, you can just add it to the connector harness. You must have similar harness around?

Yup i have , I used from another connector.