Its a pretty nice USB to I2C Board using Silicon Labs CP2112 chip.
Some nice featured
View from top down
Left | Right | ||
---|---|---|---|
VCC | VCC | ||
GND | GND | ||
SDA | IO5 | GPIO.5 | |
SCL | IO6 | GPIO.6 | |
GPIO.2 | WAK | IO7 | GPIO.7_CLK |
GPIO.3 | INT | SUS | |
GPIO.4 | RST | SUS~ |
GPIO.0 and GPIO.1 are connected to the leds
This is not really documented anywhere but..
Just swap the 000
0Ω resitor next to VCC pin to R1 place and you should be good to go.
Long version:
On this CP2112 board is configured to be bus powered. REGIN
is connected to USB 5V and VDD
pin provides 3.3v via integrated regulator. VIO
pin sets the IO voltage level and is by default connected to VDD
via 0Ω resistor. CJMCU board also has 65KU
1.8v regulator on board that can be connected to VIO
pin via 0Ω jumber restor R1
.
GIMP file of the traced schematic