esp32-c6_microcontroller

custom esp32-c6 development board with rgb status led, user input, i2c expansion, oled support, and onboard environmental sensing.

initial board bring-up demo showing oled output, live temp/hum readout, uart programming setup, and rgb led status.

demo features

• esp32-c6 microcontroller core
• usb-c power input
• rgb status led
• user button
• i2c header
• oled display support
• onboard temp / hum sensor
• uart program header for bring-up and debug

bring-up status

this board has been successfully brought up far enough to verify core power, programming, gpio, i2c, oled, and environmental sensor functionality.

verified working

• usb-c power input
• 3.3v regulation
• esp32-c6 boot from flash
• uart programming through j3
• reset button
• user button
• rgb led
• i2c bus
• oled display at 0x3c
• temp/hum sensor at 0x44

verified gpio map

• gpio3 = red
• gpio4 = green
• gpio5 = blue
• gpio23 = user switch
• gpio6 = sda
• gpio7 = scl

rgb led notes

the rgb led is active-low:

• low = on
• high = off

uart programming notes

uart programming through the j3 program header is working.

working connections:

• usb-uart tx -> board esp_rxd
• usb-uart rx -> board esp_txd
• usb-uart gnd -> board gnd

current working upload sequence:

1. hold boot
2. start upload
3. tap reset when the tool begins connecting
4. release boot after connection
5. press reset after upload to run the application

i2c device detection

the following i2c devices were detected during bring-up:

• 0x3c = oled
• 0x44 = temp/hum sensor

sample verified sensor reading

• 29.2c
• 35.0% rh

current status

the board has successfully run a combined demo with:

• rgb led control
• user button input
• i2c bus scan
• oled output
• live temperature / humidity readout

open items

• native usb enumeration still needs separate debug / validation
• programming flow is currently manual through uart header

Designed & Engineered by Brandon Shelly