Parts

• ESP32 DEVKIT V1

  • https://www.aliexpress.us/item/2255800094862861.html

• Micro USB Connector Breakout

  • https://www.aliexpress.com/item/1005006088838882.html

• ±5% 100V 100nF -40℃~+110℃ Metallized Polyester Plugin,P=5mm

  • C3034534

• 47uF 50V ±20% 180mA@100kHz Plugin,D6.3xL12mm

  • C2831773

• Metal Film Resistors 4.7kΩ 250mW ±100ppm/℃ ±1%

  • C119339

• Metal Film Resistors 47kΩ 250mW ±50ppm/℃ ±1%

  • C410613

• SN74HC14N Schmitt Trigger 6 21ns@6V,50pF 2uA 2V~6V DIP-14 Inverters ROHS

  • C2907

Micro USB Breakout

ESP32 DevKit V1

Firmware

esptool.py --chip esp32 --port COM5 --baud 460800 --before default_reset --after hard_reset write_flash --flash_mode dio --flash_size detect --flash_freq 40m 0x1000 bootloader.bin 0x8000 partition-table.bin 0x10000 touchdro-diy-universal-1.6.bin

It seems that for the esp32 to broadcast you need to keep the boot button pressed

References

• https://www.touchdro.com/resources/adapters/diy/esp32-diy-dro.html
• https://gitlab.com/VictorLamoine/kicad

https://www.touchdro.com/resources/adapters/diy/esp32-diy-dro.html

Ordering from JLCPCB

Step 1

from within PCB:

• Export Gerber files

• Export Drill Files

• Export Placement file

  • Separate files for front/back
  • Keep only top file
  • Remove components not to be mounted

Step 2

from within Schematic:

Create BOM compatible with JLCPCB the custom plugin from within our kicad-libs projecs:

This plugin will include only the components with a JLCPCB attributes

Production files

kicad_pos_to_cpl.py POSITION.POSITION-JLCPCB.csv overrides.json [overrides.json]

Tune placement file

Example overrides.json:

{
    "D3": 180,
    "Q1": 180,

    "U6": -90,
    "U8": -90
}