

QUarkNano 9250 UC4H
HW designs
- Size
- 21.5 × 30 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 61
- Nets
- 81
- Pads
- 263
- Tracks, vias
- 688, 77
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 May 2019
- Updated
- 7 Feb 2023
Overview
QUarkNano 9250 UC4H is an open-source printed circuit board by ukmook, from the ukmook/qUark repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 4-layer board of 21.5 × 30 mm with 61 parts on 81 nets, routed with 688 tracks and 77 vias.
It is built around the STM32F405RGT6 and MAX3051EKA. Its parts include 19 resistors, 18 capacitors, 10 connectors, 5 ICs and 5 diodes. It belongs with the STM32 boards of this library.
Main components
2README
qUarkNano_UC4H_HW/README.mdqUarkNano CANBUS flight controller

I am in the process of testing this design
Design files for qUarkNano UC4H Flight controller.
PWM can now be selected using ALT Config. But not with the Firmwares in this repo.
This flight controller is to be used with either Betacopter or Ardupilot using nodes from Oliiw designs or from ardupilot. https://discuss.ardupilot.org/t/ap-periph-1-0-0-stable-released/49049/14 or Olliw http://www.olliw.eu/2017/uavcan-for-hobbyists/
This is not an easy build and uses very small components.
I use a small oven which i bought from a local store, a microscope from ebay and solder paste from an online UK store. Also OSH Stencils are the best i have tried others and they dont come close. 4mil stainless steel. But if you are thinking of building this then i suspect that you already have the right tools.
The BOM file has all the part numbers listed either from RS Components or mouser (the 2 component suppliers i use), You do not have to buy from there but adding the part numbers to the RS website search will bring up the item page which has all the info. The components can be bought from where ever you like.
Kicad
Included are the design files for Kicad and also images, 3d for freecad, part footprint .pretty & PDF schematic.
Specs
0 PWM, 3 Uarts, 1 RCIN, 2 CANBUS, BUZZER
Firmware
Firmware & bootloader which will work with the board and Arducopter
The uarts, i2c and spi buses were chosen to keep the DMA Table as clear as possible.
Other flight stacks can be used.
Features
| Specification | |
|---|---|
| IMU | MPU9250 |
| Baro | BMP280 |
| SD Card | Push Push type JST |
| Volt Sense | Voltage sensor 6s Max |
| Curent Sense | 3.3v |
| Uarts | Usart1 Usart2 Usart6 |
| RX | RCIN on 3 pin port |
| CPU | STM32F405RGT6 |
| CANBUS | MAX3051 solder link for 120ohm Termination |
| CANBUS | JST GH Socket |
| USB | Vertical USB with diode protection |
| PCB Size | 4 layer board of 21.6 x 30.1 mm. |
| Buzzer/Alarm | Alarm for Ardupilot musical tones on a timer using micro nfet |
PCB
PCB Boards OSH Park https://oshpark.com/shared_projects/3hq3EozV
Upper

Lower

Parts
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0402_10K | Kicad Library:RES_0402 | R1, R5, R8, R9, R10, R11 |
| 5 | 0402_100nF_X5R | Kicad Library:CAP_0402 | C3, C4, C6, C10, C18 |
| 5 | 0402_100nF_X7R | Kicad Library:CAP_0402 | C13, C14, C15, C16, C17 |
| 3 | 0402_2K | Kicad Library:RES_0402 | R17, R18, R19 |
| 3 | 0402_330R | Kicad Library:RES_0402 | R2, R3, R4 |
| 3 | PIN_2.54x4_VRT | Kicad Library:Pin_Header_Straight_1x04_Pitch2.54mm | J6, J7, J9 |
| 2 | 0402_10nF_X5R | Kicad Library:CAP_0402 | C5, C8 |
| 2 | 0402_2.2uF_X5R | Kicad Library:CAP_0402 | C1, C2 |
| 2 | 0402_22R | Kicad Library:RES_0402 | R6, R7 |
| 2 | 0603_100nF_X7R | Kicad Library:CAP_0603 | C7, C9 |
| 2 | 0603_4.7uF_X5R | Kicad Library:CAP_0603 | C11, C12 |
| 2 | JST_GH_4_BRD | Kicad Library:JST_GH_SM04B-GHS-TB_RA | J2, J3 |
| 2 | SDM1U20CSP-7 | Kicad Library:SDM1U20CSP-7 | D4, D5 |
| 1 | 0402_0R | Kicad Library:RES_0402 | R13 |
| 1 | 0402_1K | Kicad Library:RES_0402 | R15 |
| 1 | 0402_1K1 | Kicad Library:RES_0402 | R14 |
| 1 | 0402_9K1 | Kicad Library:RES_0402 | R16 |
| 1 | 0603_120R | Kicad Library:RES_0603 | R12 |
| 1 | BMP280_P | Kicad Library:BMP280_P | U4 |
| 1 | Blue_LED_0402 | Kicad Library:BLUE_LED_0603 | D2 |
| 1 | CONN_1.27_4 | Kicad Library:CONN_1.27_4 | J4 |
| 1 | CSTCE16M0V53A-R0 | Kicad Library:CSTCE16M0V53A-R0 | Y1 |
| 1 | EVPBB2A9B000 | Kicad Library:EVPBB2A9B000 | S1 |
| 1 | Ferrite_Bead_0805_Wurth | Kicad Library:FERRITE_0805 | FB1 |
| 1 | Green_LED_0402 | Kicad Library:GREEN_LED_0603 | D3 |
| 1 | MAX3051 | TO_SOT_Packages_SMD:SOT-23-8 | U5 |
| 1 | MPU9250 | Kicad Library:MPU9250 | U1 |
| 1 | NFET_CSD13383F4_MICRO | Kicad Library:NFET_CSD13383F4 | Q1 |
| 1 | PIN_2.54x3_VRT | Kicad Library:Pin_Header_Straight_1x03_Pitch2.54mm | J5 |
| 1 | Pin_Header_Straight_1x02_Pitch2.54mm | Kicad Library:Pin_Header_Straight_1x02_Pitch2.54mm | J8 |
| 1 | REG113NA-3.3_250 | Kicad Library:REG113NA_3_3_250 | U3 |
| 1 | Red_LED_0402 | Kicad Library:RED_LED_0603 | D1 |
| 1 | SD_CARD_JST | Kicad Library:JST_SDCARD | J1 |
| 1 | STM32F405RGT6 | Kicad Library:STM32F405RGT6 | U2 |
| 1 | USB_A_VRT_WURTH | Kicad Library:WURTH_USB_VRT | J10 |
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Questions
How big is the QUarkNano 9250 UC4H PCB?
It measures 21.5 × 30 mm and has 4 copper layers, 1.6 mm thick.
What parts does the QUarkNano 9250 UC4H use?
61 parts, built around the STM32F405RGT6 and MAX3051EKA. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the QUarkNano 9250 UC4H KiCad files?
From the ukmook/qUark repository on GitHub, at the commit this page was made from: the board is qUarkNano_UC4H_HW/qUarkNano_9250_UC4H.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the QUarkNano 9250 UC4H design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).