R3 WEMOS ESP32 DEV BOARD

ASCOM-INDI ESP32 Wifi focuser

Brought to you by: brownrb

R3 WEMOS ESP32 DEV BOARD

Forum: General Discussion

Creator: brownrb

Created: 2019-10-02

Updated: 2024-04-02

brownrb - 2019-10-02

Dev board allowing a myFocuserPro2ESP ESP32 solderless focuser.

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brownrb - 2019-10-02

https://sourceforge.net/projects/myfocuserpro2-esp32/files/PCB%20Designs%20Layout%20and%20Parts/ESP32/R3%20WEMOS%20ESP32%20DEV%20BOARD/

You can order an R3 WEMOS ESP32 CH340G Board as follows
https://www.ebay.com/itm/R3-Wemos-UNO-D1-R32-ESP32-WIFI-Bluetooth-CH340-Devolopment-Board-For-Arduino/264166013552

Last edit: brownrb 2019-10-02

R3 Wemos.jpg

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brownrb - 2019-10-02

You will need a solderless DRV8825 module board [also do not forget to buy a DRV8825 driver chip]

https://www.ebay.com/itm/DRV8825-A4988-42-CH-Stepper-Motor-Driver-Expansion-Board-For-UNO-R3-3D-Printer/332441054084

Last edit: brownrb 2019-10-02

DRV8825 Breakout-01.jpg

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brownrb - 2019-10-02

You will need a solderless DS18B20 Temperature Probe board [and you also need to get the 1m waterproof probe]

https://www.ebay.com/itm/DS18B20-Temperature-Sensor-Probe-WaterProof-Plugable-Terminal-Adapter-Module/401665092329

Last edit: brownrb 2019-10-02

DS18B20 Breakout Adapter.png

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brownrb - 2019-10-02

You will need a solderless rs232 db9 breakout board

https://www.ebay.com/itm/DB9-RS232-Serial-to-Terminal-Female-Adapter-Connector-Breakout-Board-9Pin-WF/182993780710

RS232-DB9 Breakout-01.jpg

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brownrb - 2019-10-02

Throw in an OLED 0.96" I2C display and a DS18B20 1m temperature probe
And then start connecting using simple Arduino dupont connector leads

Last edit: brownrb 2019-10-02

R3 Wemos Connections.png

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brownrb - 2019-10-02

Firmware support being tested and will be released in next revision shortly

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brownrb - 2019-10-02

Total Cost [minus case and stepper motor] about $25

Last edit: brownrb 2019-10-02

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stephen webster - 2024-03-03

i am currently building the wemos solderless solution but have ran into a problem powering the drv8825 expansion board. i have it wired as shown in the documentation but no power seems to be reaching the board either through usb or 12v. the d1 r32 board is getting power and can connect to software etc but no power to driver or motor.

R3 Wemos Connections.png

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stephen webster - 2024-03-04

also tried with the extra ground on the driver board, tried other drivers and boards but no power. any help is appreciated

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