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OnStep-JUWEI-17

satakagi·OnStep-JUWEI-17·KiCad/OnStepJuwei17.kicad_pcb

OnStep-JUWEI-17 PCB layout, top view — open source ESP32 board by satakagi
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About the OnStep-JUWEI-17 PCB

OnStep-JUWEI-17 is an open source ESP32 PCB design by satakagi, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 67 × 87 mm, with 72 components from 45 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the DS3231MZ, CH340G, ESP-12F, AMS1117-3.3 and PC817. By type, the board carries 23 resistors, 19 connectors, 14 capacitors, 6 ICs, 4 diodes and 2 modules.

It belongs with the iot & wireless and rf & radio designs in this gallery.

From the project

An open-source hardware controller for the JUWEI-17 harmonic drive equatorial mount, based on the OnStep ESP32 Mini. By using a Giteki-certified module, it can be used with peace of mind in Japan, and can be freely developed and improved with the open-source community overseas.

- Introduction - Why This Project? - Disclaimer - Features - Hardware - Firmware and Config.h Configuration - Usage - Optional Feature: GPS Integration - Licensing - Contribution & Support - Contact

This repository contains the open-source hardware (OSH) design files (KiCad project) for a custom OnStep-JUWEI-17 controller board specifically tailored for the JUWEI-17 harmonic drive equatorial mount. This board provides a robust and configurable solution for upgrading the JUWEI-17 mount with the powerful OnStep firmware, enhancing its tracking accuracy and GoTo capabilities.

OnStep-JUWEI-17, from the project README
From the project README

Main components on the OnStep-JUWEI-17

ESP32-WROOM-32EDS3231MZCH340GESP-12FAMS1117-3.3PC817Pololu_Breakout_A4988

OnStep-JUWEI-17 bill of materials (BOM)

72 components, 45 distinct parts.

QtyPartRefs
1
ESP32-WROOM-32E
U1
1
DS3231MZ
U2
1
CH340G
U3
1
ESP-12F
U4
1
AMS1117-3.3
U5
1
PC817
U6
2
Pololu_Breakout_A4988
A1, A2
1
IRF540N
Q1
1
S8050
Q2
1
12.000MHz
Y1
1
RJ12
J1
1
BAT
J2
1
PPS
J3
1
SHCPOWER
J4
1
USB1
J5
1
HW-613
J6
1
FAN
J7
1
MOTOR2
J8
1
MOTOR1
J9
1
RX-HDR
J10
Show 25 more
QtyPartRefs
1
TX-HDR
J11
1
Flash-HDR
J12
1
Reset-HDR
J13
1
BME280
J14
1
POWER
J15
1
POWER SW
J16
1
AUX
J18
1
BRAKE
J19
1
CameraControl
J20
1
Buzzer
BZ1
1
CAM
D1
1
PWR
D2
1
DRV
D3
1
SB150
D5
9
0.1u
C1, C2, C3, C6, C7, C8, C12, C13 +1
2
22p
C4, C5
3
47u
C9, C10, C11
7
10k
R1, R3, R13, R14, R15, R18, R19
1
100k
R2
8
4k7
R4, R5, R6, R7, R8, R9, R10, R21
2
470
R11, R12
1
100
R16
2
1K
R17, R20
1
510k
R22
1
1M
R23

OnStep-JUWEI-17 design files

The KiCad project lives in the satakagi/OnStep-JUWEI-17 repository on GitHub; these links point at the commit this page was built from.

OnStep-JUWEI-17: common questions

What microcontroller does the OnStep-JUWEI-17 use?

The OnStep-JUWEI-17 is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the OnStep-JUWEI-17 PCB?

The OnStep-JUWEI-17 measures 67 × 87 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OnStep-JUWEI-17?

72 components, from 45 distinct parts. The full bill of materials is listed on this page.

Where can I download the OnStep-JUWEI-17 design files?

From the satakagi/OnStep-JUWEI-17 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the OnStep-JUWEI-17 design in my own project?

Yes, under the terms of its GPL-3.0 license, which satakagi chose for the repository.

Can I test firmware for the OnStep-JUWEI-17 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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