I just would like to have others look at this. There are always improvements to be made, and I'm no expert.
Stuff im not sure of:
-am I using any bad resistor values for LEDs and switches
-Proper regulator setup
-conflicts with pins on PIC chip (ie using pins as outputs or inputs where it will cause errors later)
-will the programming connection work here?
Connections used:
receiver# pins to connect to a RC radio receiver. Two power it and the other gets the signals.
the +18 pins connect to a pair of 9V rechargeable batteries.
motor 1 and 2 connect to the lines of one motor and motor 3 and 4 connect to the lines of a second.
Purpose of componenets:
One button is reset, the other will be used to calibrate the motor controller.
The LED's will show what calibration state it is in.
as a side note the plan is that the user will push it once and led 1 will light to indicate that you are calibrating the high side of channel 1, then you turn the channel 1 knob to what you want to be the high position and press the button, then led 1 and 2 light indicating that it is configuring the neutral position, and so on, it repeats for channel 2, this is very minimal interface I know, but it just needs to be enough that I have some idea where it is. Maybe I'll add more on the next version.
Connections used:
receiver# pins to connect to a RC radio receiver. Two power it and the other gets the signals.
the +18 pins connect to a pair of 9V rechargeable batteries.
motor 1 and 2 connect to the lines of one motor and motor 3 and 4 connect to the lines of a second.
The motors are small DC motors, 9V 1.2A stall current.
The receiver pins will be connected to female servo connectors and will be plugged into an RC receiver, 1 and 2 connect to the systems +5 and GND lines, and into those lines respectively on the receiver.
CON1 is going to connect to a PIC programmer, the connections from left to right are VPP, +5V, GND, PGD, PGC
The motors are small DC motors, 9V 1.2A stall current.
The receiver pins will be connected to female servo connectors and will be plugged into an RC receiver, 1 and 2 connect to the systems +5 and GND lines, and into those lines respectively on the receiver.
CON1 is going to connect to a PIC programmer, the connections from left to right are VPP, +5V, GND, PGD, PGC
one is connected to output 1 and 2, the other is connected to 3 and 4. The polarity doesn't matter, this is a symmetrical H-bridge. Is there something specific you're trying to figure out here?
The physical connection is a awg 18 wire harness with a two pronged jacketed plug. There is no protection other than that shown here. The ports will be programmed so that one output will be at 0 volts and the other will have a PWM pulse that goes between 0 and around +12. For the opposite direction it flips sides.