Radio Control Interface Circuit


	Diverse Electronic Services


	RCIC-1




		The RCIC-1 (Radio Control Interface Chip) is a preprogrammed PIC mounted on a daughterboard which plugs directly on an MC7 motor controller. It accepts a standard 1 to 2 ms RC pulse and outputs logic level direction signals and PWM pulses to the MC7 to control speed. You have full control of the motor controller for direction and continuously variable speed. This gives you a 30 amp radio controlled Electronic Speed Control.




		RCIC-1 Shown Mounted on a MC7 controller


	Table 1 RCIC-1 RC Interface Chip Pinout and Description

Pin Number	Pin Name	Purpose	Connection
1	RA2	Not Used	No Connection
2	RA3	RC pulse input. Accepts pulse widths from 1 to 2 ms	Pulses from standard RC receiver wired to this pin
3	RA4	Not Used	No Connection
4	MCLR	10K resistor connected to this pin	Other side of 10K resistor connected to +5V
5	VSS	Ground Lead	Connected to RCIC-1 ground & MC7-1
6	RB0	PWM output port.	Connected to the MC7 PW terminal
7	RB1	Not Used	No Connection
8	RB2	Outputs a logic level 1 (+5V) when input pulse is more than 1.5 ms.	Connects to the MC7 FWD terminal
9	RB3	Outputs a logic 1 (+5V) when pulse is 1.5 ms	Connected to an LED & resistor which lights to show when received pulse is 1.5 ms
10	RB4	Outputs a logic level 1 (+5V) when input pulse is less than 1.5 ms	Connects to the MC7 REV terminal
11	RB5	Not Used	No Connection
12	RB6	Outputs a logic 1 (+5V) when pulses are received	Connected to an LED and resistor which lights to show when RC pulses are received
13	RB7	Not Used	No Connection
14	VDD	+5V	Connect to SW COM on the MC7 for a 5V source
15	OSC2	Connection for external frequency element	Connect to 10 MHz ceramic resonator.
16	OSC1	Connection for external frequency element	Connect to 10 MHz ceramic resonator.Connect to 10 MHz ceramic resonator.
17	RA0	Not Used	No Connection
18	RA1	Not Used	No Connection


				RCIC-1 Schematic



	The following schematic shows how to connect 2 RCIC-1's to control 2 MC7's:



					The RCIC-1 is available for $30.00

Motor Controllers

Battery Chargers

Interface Circuits

Radio Controlled Devices