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Profile:My observatory controller hardware, this is based on the Teensy3.5, 3.6, or 4.1 microcontroller with W5500 Ethernet module.

License: CC-BY-NC-SA 3.0

Published Time:2021-10-25 22:55:14
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Description

My observatory controller hardware, this is based on the Teensy3.5, 3.6, or 4.1 microcontroller with W5500 Ethernet module.

Relays (most have screw down terminal provision) there are:
4 x 0.5A rated optically isolated solid state relays (RE1 to RE4.)  I use these for switching
2 x n-channel 50A rated MOSFET transistors for switching my DC roof motor.  These are driven by optically isolated SSR's.
4 x 15A 230V rated mechanical relays.  These are driven by optically isolated SSR's.
1 x 10 position header with 5V or 12V power and ground and digital control signals for an 8 channel mechanical relay board typically available from eBay.

Input signals (all have screw down terminal provision) there are:
4 x current limited diode clamped analog inputs.  These are 10:1 voltage divided for measuring up to 33V max.
4 x current limited diode clamped digital inputs (3.3V max) with pull-up resistors.  These are typically used for sensing (roof) limit switches or light switches.
4 x "shared" current limited analog or digital inputs (3.3V max.)  Two of the four are diode clamped.  These are typically used for analog sensors (temperature or windspeed for example.)

Digital I/O:
2 x TTL Serial connections with 5V power on screw-down terminals.
2 x I2C connections with 3.3V (or optional 5V)  poly-fused (0.5A) and 12V on RJ45 connectors.
1 x I2C pin-header for optional BME/BMP280.  Typically used for inside temperature and humidity.
1 x SPI pin-header for optional DS3234RTC clock.

Power (all have screw down terminal provision:)
2 x 3.3V power (0.5A poly-fused.)
2 x 5V power (0.5A poly-fused.)
2 x 12V power (protected by main fuse.)

ID Name Designator Footprint Quantity
1 TEENSY_3.5_3.6_BASIC U2 TEENSY_3.53.6_BASIC 1
2 220uF C1 CAP-TH_BD10.0-P5.00-D1.0-FD 1
3 330nF C2 CAP-TH_L5.9-W4.1-P5.08-D0.5 1
4 10uF C3 CAP-TH_L6.0-W5.0-P5.00-D1.0 1
5 22uF C4,C7,C8 CAP-TH_L5.9-W4.2-P5.08-D0.5 3
6 100nF C9,C10,C11,C5,C6 CAP-TH_L5.0-W4.0-P5.00-D1.0 5
7 JK-NSMD050/24V F1,F2 F1206 2
8 XF-506P FH1 FUSE-TH_XF-506P 1
9 XY128V-A-5.0-2P JS13 CONN-TH_XY128V-A-5.0-2P 1
10 XY350V-3.5-4P JS14,JS15,JS16,JS1,JS2,JS3,JS4,JS5,JS6,JS17,JS18 CONN-TH_XY350V-3.5-4P 11
11 K78L03-1000R3 U21 PWRM-TH_K78LXX-1000R3 1
12 K78L05-1000R3 U22 PWRM-TH_K78LXX-1000R3 1
13 1N4001_C360240 D1,D2,D3,D4,D5,D6 DO-41_BD2.4-L4.7-P8.70-D0.9-RD 6
14 1x2 Header J13A,J14A,J15A,J16A,JP1 HDR1X2 5
15 XY636-6.35-2P JS7,JS8 CONN-TH_XY636-6.35-2P 2
16 XY350V-3.5-3P JS9,JS10,JS11,JS12 CONN-TH_XY350V-3.5-3P 4
17 264-7SURT/S530-A3 LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10 LED-TH_BD3.2-P2.54-RD 10
18 pinheader10x1 PH1 PINHEADER_10X1 1
19 1x3 Header PH3,PH4 1X3 HEADER 2
20 CS150N03A8W Q1,Q2 TO-220-WIDE 2
21 3K3 R1,R2,R3,R4,R9,R10,R11,R12,R20,R21,R42 RES-TH_BD1.8-L3.2-P7.20-D0.4 11
22 4K7 R5,R6,R7,R8,R13,R14,R15,R16,R18,R19 RES-TH_BD1.8-L3.2-P7.20-D0.4 10
23 120 R17,R38,R39 RES-TH_BD1.8-L3.2-P7.20-D0.4 3
24 1M2 R40,R41 RES-TH_BD1.8-L3.2-P7.20-D0.4 2
25 G3VM-41AY U4,U5,U6,U7 DIP-4 4
26 Relay TE RZF1-1A6-L012 U8,U9,U10,U11 SONG CHUAN FORM A SPST RELAY 302WP1 4
27 G3VM-351A U12,U13,U14,U15,U16,U17 DIP-4 6
28 1x7 Header PH2 HDR1X7 1
29 2K2 R22,R23,R24,R25,R26,R27,R28,R29,R30,R31,R32,R33,R34,R35,R36,R37 RES-TH_BD1.8-L3.2-P7.20-D0.4 16
30 220 R43,R44,R45,R46 RES-TH_BD1.8-L3.2-P7.20-D0.4 4
31 DS1134-07-S8B0P RJ1,RJ2 RJ45-TH_DS1134-07-S8B0P 2
32 W5500-MINI_V1.1_EVB U3 W5500-MINI 1
33 BME280 U18 BME280 1
34 DA112S1 U19,U20 S08 2

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