- All information about the board needed for development can be found attached tothe latest release
- tindie listing with PCB and ESP-PROG adapter as like "wled developer kit?"
- Current microcontroller is ESP32-S2-SOLO (datasheet)
- We're also attempting to use the ESP32-S3-WROOM-2 microcontroller during development, because of its dual-core capability.
- A MEMS Microphone, the
SPH0641LU4H-1, can be optionally installed in case we later want to add live sound reactivity (datasheet ).
| GPIO PIN | Connected to |
|---|---|
GPIO21 |
LED Strip D_in |
GPIO2 |
Status LED |
GPIO33 |
I2C SDA |
GPIO35 |
I2C SCL |
GPIO5 |
MEMS Mic Clock |
GPIO6 |
MEMS Mic Data |
- From v2.2, SCL has been moved to
GPIO37. This was because on the WROOM,GPIO35is not present (and is an NC pin).
- Trace width and vias for power delivery from DC jack to LED Strip Power lines calculated to handle 12A with ΔT rise of <10°C.
- Maximum draw of a 5M 60 LED/m WS2812B strip (all white at maximum brightness) is 12A @ 5V. Anything longer than that and you start seeing the brightness drop due to the resistance of the traces inside the strip, so it is unlikely this design limit will be exceeded.
- ESP32-S2-SOLO-2 Datasheet pdf
- esp32-s2_hardware_design_guidelines_en.pdf
- esp32-s2_technical_reference_manual_en.pdf
What we're using during development, since it's the most powerful ESP32 chip currently available + is dual core. If we don't end up needing the second core, software will be able to be compiled for S2.