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Standard

1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

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2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

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Std EditionMaxPCB2

License: GPL 3.0

Published Time:2018-12-29 03:22:07
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Description

For my OnStep telescope mount controller (visit my group for more information.) This design is built around the Teensy3.5/3.6 There are four stepper drivers (one for RA/Azm, one for Dec/Alt, one for a focuser, and one for a rotator/second focuser.) All are available on RJ jacks at the PCB back. There's a power jack, fuse, and power switch connection. There are several connectivity options: USB, an I2C port (w/footprint for the DS3231 RTC.) There are two serial ports. Serial4 is brought out on a pin-header connector (w/power.) Serial1 is on a WeMos D1 Mini (ESP8266) foot-print for Wifi support. There is a D-Sub connector DB9 that has home SW inputs, PEC input, and two channels of A/B encoder inputs (which run to the ESP8266.) There's also a modular connector for an ST4 guider interface (with optional 5V power.) One a 3.5mm stereo mini jack is a limit sense input (to stop the mount) and also a reticule LED output. And finally, there's a mini speaker output for an alert buzzer.

History Version 2.0 First release of MaxPCB2 Version 2.1 Moved PPS from DS3231 on 32KHZ to SQW pin Version 2.11 Silkscreen improvements, removed unused pads on RTC

Documents
ID Name Designator Footprint Quantity
1 A4988, etc. U4,U3,U2,U5 GENERIC STEPPER MOTOR DRIVER CARRIER 4
2 POWER_JACKPTH JP1 POWER_JACK_PTH 1
3 FUSE F1 FUSEHOLDER_MINI_BLADE 1
4 5V Reg U7 OKI78SR 1
5 100uF C2,C1 CAP-D8.0XF3.5 2
6 100uF C3 CAP-D6.3XF2.5 1
7 RJ12 RJS 6P6C 1
8 0.33UF-50V C8 CAP-PTH-SMALL-KIT 1
9 0.1UF-100V C9,C11,C13,C12,C6,C7 CAP-PTH-SMALL-KIT 6
10 1x2 Header J12 HDR1X2 1
11 12V Reg U6 OKI78SR 1
12 RJ22 RJ3,RJ4 5555980-1 2
13 47uF C5,C4 CAP-D5.0XF2.0 2
14 MOLEX KK 1X2 J1 MOLEX KK 1X2 1
15 0.1UF-100V-20%(PTH) C14 CAP-PTH-SMALL-KIT 1
16 2k R6 AXIAL-0.3 1
17 4POS_SCREW_TERMINAL_3.5MM JS1,JS2 4POS_SCREW_TERMINAL_3.5MM 2
18 5520426-4 RJ2,RJ1 5520426-4 2
19 WEMOS D1 MINI U8 WEMOS_D1_MINI 1
20 1x3 Header J10,J9 1X3 HEADER 2 2
21 M0 J3,J6 1X3 HEADER 2 2
22 M1 J4,J7 1X3 HEADER 2 2
23 M2 J5,J8 1X3 HEADER 2 2
24 1N4001 D5,D4 DO-41 2
25 1x5 Header J13 1X5 HEADER 1
26 3.3KΩ(3302) R2,R3 AXIAL-0.3 2
27 DB9 Socket JP2 DB9 1
28 TEENSY_3.5_3.6_BASIC U1 TEENSY_3.53.6_BASIC 1
29 4.7KΩ R1 AXIAL-0.3 1
30 DS3231-RTC-SINGLE-HEADER RTC1 DS3231-RTC-24C32-EEPROM-SINGLE-HEADER 1
31 4POS_SCREW_TERMINAL_2.54MM JS3,JS4 4POS_SCREW_TERMINAL_2.54MM 2
32 Bussed Resistor Network 5 Pin RP1,RP2 4 RESISTOR ARRAY 2
33 PJ-325M/3.5MM J2 AUDIO-PJ325 1
34 180Ω R5 AXIAL-0.4 1
35 LED3/5mm D1,D2,D3 LED3/5MM 3
36 BUZZER SP1 BUZZER-12MM-KIT 1

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