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STD MaxESP1.x (obsolete)
License: GPL 3.0
Mode: Editors' pick
- 1
Update time：
2019-01-14 16:06:47
Creation time：
2018-09-04 14:47:28
Description
For my OnStep telescope mount controller (visit my [group][1] for more information.) This design is built around the ESP32S.
Features:
- Three stepper drivers (one for RA/Azm, one for Dec/Alt, and one for a focuser or rotator.)
- Power jack, fuse, and power switch connection.
- DB9 (d-sub miniature) jack for quick connection of optional optical encoders, home position switches, and the PEC sensor.
- Limit Sense input to stop the mount (panic button, switches on the mount, etc.)
- Mini speaker for an alert buzzer.
Connectivity options:
- USB
- Bluetooth (onboard the ESP32.)
- Wifi support via the WeMos D1 Mini (ESP8266) which can plug directly into the PCB (using 0.1" socket headers.) Encoders are supported through the WeMos D1 Mini and brought out on the DB9 connector.
- I2C support so the DS3231 (RTC) and BME280 (weather) which can plug directly in the PCB.
- ST4 port auto-guider interface (with optional 5V power.)
[1]: https://groups.io/g/onstep
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | Manufacturer Part | Mounted | |
|---|---|---|---|---|---|---|---|
| 1 | A4988, etc. | U3,U2,U4 | GENERIC STEPPER MOTOR DRIVER CARRIER | 3 | Misc. eBay etc. | Yes | |
| 2 | MOLEX KK 1X4 | J3,J4 | MOLEX KK 1X4 | 2 | 22-23-2041 | Yes | 538-22-23-2041 |
| 3 | RJ22 | RJ1 | 4P4C | 1 | 5555980-1 | Yes | 571-5555980-1 |
| 4 | POWER_JACKPTH | JP1 | POWER_JACK_PTH | 1 | PJ-102AH | Yes | 490-PJ-102AH |
| 5 | FUSE | F1 | FUSEHOLDER_MINI_BLADE | 1 | 3568 | Yes | 534-3568 |
| 6 | MOLEX KK 1X2 | J1,J5,J2,J10 | MOLEX KK 1X2 | 4 | 22-23-2021 | Yes | 538-22-23-2021 |
| 7 | 5V Reg | U7 | OKI78SR | 1 | OKI-78SR-5 1.5-W36-C | Yes | 580-OKI78SR5/1.5W36C |
| 8 | 100uF | C1,C2 | CAP-D8.0XF3.5 | 2 | EEU-FR1H101 | Yes | 667-EEU-FR1H101 |
| 9 | 100uF | C3 | CAP-D6.3XF2.5 | 1 | UVY1E101MDD | Yes | 647-UVY1E101MDD |
| 10 | 47uF | C4,C5 | CAP-D5.0XF2.0 | 2 | ECA-1VM470I | Yes | 667-ECA-1VM470I |
| 11 | RJ12 | RJ3 | 6P6C | 1 | UL6661 | Yes | 154-UL6661 |
| 12 | USB B Female | USB1 | USB-M-49 | 1 | 61729-0010BLF | Yes | 649-61729-0010BLF |
| 13 | 0.1UF-100V | C6,C7,C9,C11,C10,C13,C12 | CAP-PTH-SMALL-KIT | 7 | SR211C104KARTR1 | Yes | 581-SR211C104KARTR1 |
| 14 | 1x2 Header | J15,J7 | HDR1X2 | 2 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 15 | 1x6 Header | J16 | 1X6 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 16 | RED5mm | D1,D2,D3 | LED-5MM | 3 | 5mm Red LED | Yes | 5mm Red LED |
| 17 | 0.33UF-50V | C8 | CAP-PTH-SMALL-KIT | 1 | C322C334M5U5TA7301 | Yes | 80-C322C334M5U-TR |
| 18 | 12V Reg | U6 | OKI78SR | 1 | L7812ABV | Yes | 511-L7812ABV |
| 19 | WEMOS D1 MINI | U8 | WEMOS_D1_MINI | 1 | Misc. eBay etc. | Yes | |
| 20 | 4 Resistor Array | RP1,RP2 | 4 RESISTOR ARRAY | 2 | 4605X-101-202LF | Yes | 652-4605X-1LF-2K |
| 21 | 1x3 Header | J24,J8 | 1X3 HEADER 2 | 2 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 22 | 1N4001 | D5,D4 | DO-41 | 2 | 1N4001 | Yes | C169150 |
| 23 | A1 M0 | J37 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 24 | A1 M1 | J36 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 25 | A1 M2 | J35 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 26 | A2 M0 | J33 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 27 | A2 M1 | J32 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 28 | A2 M2 | J31 | 1X3 HEADER 2 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 29 | 1x3 Header | J20 | 1X3 HEADER 3 | 1 | 0.1" Breakaway Pin Header | Yes | 0.1" Breakaway Pin Header |
| 30 | Nodemcu_esp32 | U1 | NODEMCU-ESP32S | 1 | Nodemcu esp32 | Yes | |
| 31 | DS1034-01-09MBN044(iron) | JP2 | DB9 | 1 | DS1034-01-09MBN044(iron) | Yes | C86571 |
| 32 | 1x5 Header | J23 | 1X5 HEADER | 1 | 0.1" Pin or Socket Header | Yes | 0.1" Pin or Socket Header |
| 33 | 1x4 Header | J22 | 1X4 HEADER | 1 | 0.1" Pin or Socket Header | Yes | 0.1" Pin or Socket Header |
| 34 | 2.2KΩ | R4 | AXIAL-0.3 | 1 | MFR0W8F2201A50 | Yes | C58682 |
| 35 | MOLEX KK 1X5 | J9 | MOLEX KK 1X5 | 1 | 22-23-2051 | Yes | 538-22-23-2051 |
| 36 | BUZZER | SP1 | BUZZER-12MM-KIT | 1 | Misc. eBay etc. | Yes | 3V 25mA active piezo buzzer |
| 37 | 4.7KΩ | R1 | AXIAL-0.3 | 1 | MFR0W8F4701A50 | Yes | C58678 |
| 38 | 3.3KΩ(3302) | R2,R3 | AXIAL-0.3 | 2 | MF1/8W-3.3KΩ±1% T52 | Yes | C119190 |
| 39 | 330Ω | R5 | AXIAL-0.4 | 1 | CFR0W4J0331A50 | Yes | C61290 |
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