Programming ESP32-PICO-D4 with fully external hardware.

[bigdingo]

Hello all,

Thank you in advance for your assistance.

I am designing in an ESP32-PICO-D4 to a PCB I am creating. Is JTAG the best option for uploading code to the completed boards?

I don't want to populate all the USB devices to save cost and would prefer an external programming option.

Qty will be in the low 100's so do not need an automated system.

Ty so much,

M

[ESP_Sprite]

You can, but I think generally serial is used for that. If you have RX, TX, IO0 and EN on a header somewhere, you can use that combined with e.g. an ESP-Prog to program your hardware.