Only VCC5V0_SYS needs to be powered. If RTC functionality is required, VCC3V3_RTC also needs to be powered.
VCC_3V3 and VCC_1V8 are output voltages provided by the internal DC-DC converter.

Luckfox Taylor wrote: ↑2025-02-17 8:00 Only VCC5V0_SYS needs to be powered. If RTC functionality is required, VCC3V3_RTC also needs to be powered.
VCC_3V3 and VCC_1V8 are output voltages provided by the internal DC-DC converter.

That makes sense.

I used a power supply and some narrow pins to power the board over pin 80 (positive) and 83 negative/gnd.
It takes 5v at 33 mili amps... possible no image is written on the board making it take almost no power.

How would i connect this to an ftdi to write an image to it? is it uart0 RX and TX? (pins 110 and 111?)

is there any jig you guys sell to ease the programming of this board or is it suggested to make a pcb.. presolder all connections and then do it all?

Or is it suggested to first buy the larger board then a core to intergrate it?

The Core1106 requires power to VCC5V0_SYS to operate normally, and both pin 26 (GPIO4_C0_z) and pin 74 (nPOR) must be pulled up.
You can refer to the schematic of the Luckfox Pico Ultra for this. Pin 45 is the Boot pin, and without a pull-up resistor, it will remain in maskrom mode. Pin 74 is the reset pin, and without a pull-up, the Core1106 will stay in reset state, which is why there is no current input.

Additionally, it is recommended to bring out pins 72 and 73 (DEBUG_UART) for easier access to system logs and to bring out USB for flashing the image.

In the future, we will release baseboard products based on the Core1106.

Wiring it all worked like a charm.. pull ups booted the board.
The uart im figuring out now.
isnt it pint 106 and 107 for the RX and TX of uart1 Does it need to be combined with an FTDI interface to upload your code?

I would love to know these questions.. maybe my answers can be added to the support part of the luckfox 1106 and help a lot more getting started.

What is the minimum voltage I can supply to the core 1106 board?
can I get away with 3v to 3.3v?

Or would i need to boost to 5v ?

The power supply must be provided with 5V to VCC5V0_SYS pins, and the core board will be converted to 3.3V and 1.8V outputs internally, and the core board cannot be powered by the VCC_3V3 of the core board.
106 and 107 correspond to UART1_TX_M1 and UART1_RX_M1, which is not the default FIQ_UART interface, and cannot enter the terminal or upload code through this interface by default.
Fix that the default FIQ_UART should be pin 72 and 73 (UART2_TX_M1 and UART2_RX_M1), which I described in my last post

Hey, finding pin 1 with the arrow is usually straightforward, but identifying VCC and GND can be tricky since regulators complicate things. You’ll want to trace the rails from the regulators rather than relying only on Rockchip’s generic docs. And yes, you can hook up UART0 to an FTDI adapter for console access and even bootstrapping into eMMC programming, though it won’t directly flash like USB OTG without the right bootloader support.

Hi. would You please finally put simple but complete schematic of correct connecting /run Core1106G3 module? with pin numbers, pullup resistors and voltage supplies? and any description ?

because i tried to follow Your info about pins, but module still not started. should it draw 5v from usb? or it should be separate 5v power supply?
what button should be pressed at power on and etc. because i found no any info about that.
what conn3ection should be used for initial run of core1106? usb-ethernet? ethernet? uart only?
because no any signals on usb

thnx

uzzer wrote: ↑2026-02-15 17:29 Hi. would You please finally put simple but complete schematic of correct connecting /run Core1106G3 module? with pin numbers, pullup resistors and voltage supplies? and any description ?

because i tried to follow Your info about pins, but module still not started. should it draw 5v from usb? or it should be separate 5v power supply?
what button should be pressed at power on and etc. because i found no any info about that.
what conn3ection should be used for initial run of core1106? usb-ethernet? ethernet? uart only?
because no any signals on usb

thnx

You can refer to the schematic design of Luckfox Pico Pi (based on Core1106), which is the reference template used during the development of Core1106.

uzzer wrote: ↑2026-02-15 17:29 Hi. would You please finally put simple but complete schematic of correct connecting /run Core1106G3 module? with pin numbers, pullup resistors and voltage supplies? and any description ?

because i tried to follow Your info about pins, but module still not started. should it draw 5v from usb? or it should be separate 5v power supply?
what button should be pressed at power on and etc. because i found no any info about that.
what conn3ection should be used for initial run of core1106? usb-ethernet? ethernet? uart only?
because no any signals on usb

thnx

Hey, let me ask you something: have you accomplished USB connection? Considering USB 2.0, what are the D+ and D- pins on the Core1106?