Servo Turnout controller

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STD Servo Turnout controller

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Update time： 2019-09-02 01:13:16

Creation time： 2018-07-07 02:23:32

Description

Controls 2 servos with frog polarity relays. Has local control pushbuttons and indicator lights interfaced via RJ45 connectors, as well as an automatic control input which can move the relay and lock/unlock the manual buttons. Depending on components populated, this circuit can also drive 3 servos and 3 relays with only the manual buttons and indicators, for use in locations like yards where no centralized control is needed.

Design Drawing

schematic diagram

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Single Relay Version
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	SRD-05VDC-SL-C	RELAY1,RELAY2,RELAY3,RELAY4	RELAY-SL-SRD	4
2	16MHz	X1	HC-49S	1
3	Panel1	RJ45-1	RJ45	1
4	Panel2	RJ45-2	RJ45	1
5	Remote_In	RJ45-3	RJ45	1
6	BC337-25	Q1,Q2,Q3,Q4	TO-92(TO-92-3)	4
7	1N4148TR	D1,D2,D3,D4	DO-35	4
8	Frog1_Pwr	CN1	MKDSN1.5/3-5.08	1
9	Frog2_Pwr	CN2	MKDSN1.5/3-5.08	1
10	.1u	C1,C2	CNP_3MM_DISC	2
11	22p	C3,C4	CNP_3MM_DISC	2
12	1u	C5,C8	CNP_3MM_DISC	2
13	4K7	R13	RC06	1
14	1k	R1,R2,R3,R4	RC06	4
15	100	R5,R6,R9,R10,R14,R15,R16,R17	RC06	8
16	1K	R7,R8,R11,R12	RC06	4
17	- Power In +	CN4	MKDSN1.5/2-5.08	1
18	IRF4905PBF	Q5	TO-220(TO-220-3)	1
19	1000uF	C6	CAP-D10.0XF5.0	1
20	470uF	C7,C9,C10	CAP-D8.0XF3.5	3
21	1N5819	D5	DO-41	1
22	Servo1	J3	HDR-3X1/2.54	1
23	Servo2	J4	HDR-3X1/2.54	1
24	HBLED	LED1	LED-3MM/2.54	1
25	470	R18	RC06	1
26	10k	R19	RC06	1
27	!0k	R20,R21,R22,R23,R24,R25,R26	RC06	7
28	680p	C11,C12,C13,C14,C15,C16,C17,C18	CAP-TH_L7.3-W4.7-P5.00-D0.5	8
29	Center_Servos	H1	HDR-2X1/2.54	1
30	ATMEGA328P	U2	ATMEGA328P ARDUINO UNO	1
31	10K	R27	RC06	1
32	LM2596	U1	LM2596-MODULE	1