As you ca see in the picture above, i had to manual solder pin 32 because i will need to have a hardware interrupt to read the PPM SUM from the radio receiver. To do this, you will need a soldering iron and some soldering skills.
My advice is to attach a small development PCB board and build there the POWER PINS, RX Pins and so on. Try to solder as little as you can on the MONGOOSE PCB or you could damage it if you solder many times.
As you can see I have soldered the RX plug to the PCB I have attached near MONGOOSE that i will call from now on POWER BOARD.
The signal PPM SUM must go to pin 32 of the AtMega 328, the +5V and the GND of the RX and MONGOOSE must be connected in parallel.
The red and black wire will come from one ESC with +5V to power the mongoose and RX receiver.
When you will power the electronics ( Mongoose and RX receiver) from a +5V power source, it is safe to plug in the FTDI USB to USART (Serial). When FTDI and external power are plunged in the MONGOOSE and RX will be powered by the external power and FTDI will get his power from USB.
In the above last picture I have powered the Mongoose and RX from a NIMH batery that gives +5V trough red and black wire and also FTDI is plugged in and connected to USB so as i said before it is safe to power like this, no smoke will be produced.
In the pictures above you can see I have mounted the ESC on the quadrocopter frame. The pictures explain more than I could explain with words.
Now that i have soldered the ESC to motors and to the signal cables, I have to solder them to MONGOOSE digital PINS and also solder the servo for camera stabilization to the power board.
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