License

GPL 3.0

Tags
OnStep
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OnStepMiniPCB

2 years ago 5919
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

For my OnStep telescope mount controller (visit my group for more information.) This design is built around the Teensy3.2 and supports the most important features while keeping a small size. There are two stepper drivers (one for RA/Azm and one for Dec/Alt.) There's a power jack, fuse, and power switch connection. Additionally, there's a limit sense input (to stop the mount,) and a PEC sensor input. For connectivity there's a USB Port and one other device supported. That device can be a Bluetooth adapter (Bluetooth Mate Silver or HC05,) or an ESP8266/ESP-01 for WiFi. There's also a modular connector for an ST4 guider interface (with optional 5V power.) This strives for drop-in compatibility with my prior OnStep Mini versions so the 3D printed case/panels should still work.

Documents

Schematic

PCB

BOM

ID Name Designator Footprint Quantity Mounted
1 A4988, etc. U3,U2 GENERIC STEPPER MOTOR DRIVER CARRIER 2 Yes
2 MOLEX KK 1X4 J3,J4 MOLEX KK 1X4 2 Yes
3 POWER_JACKPTH JP1 POWER_JACK_PTH 1 Yes
4 FUSE F1 FUSEHOLDER_MINI_BLADE 1 Yes
5 MOLEX KK 1X2 J1,J7,J9 MOLEX KK 1X2 3 Yes
6 5V Reg U4 OKI78SR5/1.5W36C HOR 1 Yes
7 100uF C6,C7 CAP-D8.0XF3.5 2 Yes C45674
8 47uF C2,C3 CAP-D5.0XF2.0 2 Yes C13654
9 RJ12 RJ3 6P6C 1 Yes
10 USB B Female USB1 USB_B_HV 1 Yes
11 0.1UF-100V-20%(PTH) C4,C1,C9,C8 CAP-PTH-SMALL-KIT 4 Yes
12 MOLEX KK 1X3 J8 MOLEX KK 1X3 1 Yes
13 RED5mm D1,D2,D3 LED-5MM 3 Yes
14 2k R4 AXIAL-0.3 1 Yes
15 0.33UF-50V-20%(PTH) C5 CAP-PTH-SMALL-KIT 1 Yes
16 1x2 Header J6 HDR1X2 1 Yes
17 Bused Resistor Network 5pin RP1 RESSIP-5 1 Yes
18 TEENSY_3.2_BASIC U1 TEENSY_3.2_BASIC 1 Yes
19 ESP-01S MK1 ESP-01S 1 Yes
20 1x4 Header J5,J10 HDR1X4 2 Yes
21 4.7KΩ R5,R6,R7,R1 AXIAL-0.3 4 Yes
22 Bluetooth U5 BLUETOOTH MATE SILVER 1 Yes
23 3.3KΩ(3302) R2,R3 AXIAL-0.3 2 Yes
24 1x2 Header J2 1X2 HEADER 1 Yes

Attachments

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你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
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