2 layers41 × 52.5 mm
Frame strip
akerlund/rgb_driver_3ch
A three channel RGB LED driver written with openlibcm3 and drawn with KiCad
79 parts1
2 layers50 × 50 mm
Frame strip
akerlund/rgb_driver_3ch1A three channel RGB LED driver written with openlibcm3 and drawn with KiCad
- Size
- 50 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 87
- Nets
- 63
- Pads
- 292
- Tracks, vias
- 841, 95
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20160815)
- Created
- 9 Aug 2016
- Updated
- 27 Dec 2019
Overview
Frame strip is an open-source printed circuit board by akerlund, from the akerlund/rgb_driver_3ch repository on GitHub. It is a 2-layer board of 50 × 50 mm with 87 parts on 63 nets, routed with 841 tracks and 95 vias.
It is built around the FT231XQ-R. Its parts include 26 resistors, 19 connectors, 14 capacitors, 9 transistors and 4 ICs. It belongs with the lEDs and displays and interfaces and adapters boards and the STM32 boards of this library.
Main components
1README
README.mdLED driver PCB, 3ch RGB
STM32F100 microcontroller with small SOT23 MOSFETs to drive 12V LED strips. Four LEDs and two buttons for custom use. Three potentiometers for controlling the light; HSL, i.e., Hue, Saturation and Light. A CP2102 serial to USB interface. Pinout for other peripherals, i.e., I2C, SPI and UART.
Build
Using the ARM compiler (arm-none-eabi), which can be installed with
sudo apt-get install gcc-arm-none-eabithen change directory and run the make file
cd code
makeProgram
I use Devilholk's verion of stm32flash, with a cheap CP2102 USB to UART Bridge Controller.
Programming sequence example
~/rgb_driver_3ch$ stm32flash -b 115200 -Rcs.rts -Bcs.dtr -w code/build/driver_rgb_3ch.bin /dev/ttyUSB0
stm32flash - http://stm32flash.googlecode.com/
Using Parser : Raw BINARY
Serial Config: 115200 8E1
Version : 0x22
Option 1 : 0x00
Option 2 : 0x00
Device ID : 0x0420 (Medium-density VL)
RAM : 8KiB (512b reserved by bootloader)
Flash : 128KiB (sector size: 4x1024)
Option RAM : 15b
System RAM : 2KiB
Wrote address 0x08003304 (100.00%) Done.Pin configurations
Make sure you connect cables like this;
| PCB | CP2102 |
|---|---|
| 3.3V | N/C |
| GND | GND |
| TX | RXI |
| RX | TXO |
| RESET | RTS |
| BOOT | DTR |
If you haven't, remember to add your username to the dialout group
sudo adduser <user_name> dialoutParts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | R | w_smd_resistors:r_0603 | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +7 |
| 13 | C | w_smd_cap:c_0603 | C1, C2, C3, C4, C5, C7, C8, C9, C10, C11, C12, C13, C14 |
| 9 | MOS_N_GDS | w_smd_trans:sot23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 4 | HEADER_1 | freaquency:drill_2.0mm | J9, J10, J11, J12 |
| 4 | HEADER_3 | w_pin_strip:pin_strip_3 | J13, J14, J15, J18 |
| 3 | HEADER_4 | w_pin_strip:pin_strip_4 | J3, J4, J5 |
| 3 | POT | freakuency:pot_horizontal | ADC4, ADC5, ADC6 |
| 2 | SCHOTTKY | w_smd_diode:sod123 | D1, D2 |
| 1 | 5V | w_pin_strip:pin_strip_2 | J19 |
| 1 | 78xx-DPAK | w_smd_trans:sot223 | U4 |
| 1 | ADC4 | w_pth_resistors:trimmer_piher_pt6xv | R24 |
| 1 | ADC5 | w_pth_resistors:trimmer_piher_pt6xv | R25 |
| 1 | ADC6 | w_pth_resistors:trimmer_piher_pt6xv | R26 |
| 1 | C | w_smd_cap:c_elec_5x5.3 | C6 |
| 1 | DC_POWER_JACK | w_conn_misc:dc_socket | J7 |
| 1 | FT231X | w_smd_qfn:qfn-20 | U2 |
| 1 | HEADER_2 | w_pin_strip:pin_strip_2 | J17 |
| 1 | HEADER_2 | w_pin_strip:pin_socket_2 | J6 |
| 1 | I2C2 | w_pin_strip:pin_strip_3 | J16 |
| 1 | LED1 | w_smd_leds:Led_0805 | LD1 |
| 1 | LED2 | w_smd_leds:Led_0805 | LD2 |
| 1 | LED3 | w_smd_leds:Led_0805 | LD3 |
| 1 | LED4 | w_smd_leds:Led_0805 | LD4 |
| 1 | MINI-USB_SHIELD5P2-32005-601 | w_conn_pc:conn_usb_B_mini_smd | X1 |
| 1 | ON | w_smd_leds:Led_0805 | LD7 |
| 1 | PROGRAM | w_pin_strip:pin_strip_6 | J1 |
| 1 | RX | w_smd_leds:Led_0805 | LD5 |
| 1 | SPI1 | w_pin_strip:pin_strip_5 | J8 |
| 1 | STM32F100_LQFP48 | w_smd_lqfp:lqfp48 | U1 |
| 1 | SW1 | w_switch:smd_push | SW1 |
| 1 | SW2 | w_switch:smd_push | SW2 |
| 1 | TX | w_smd_leds:Led_0805 | LD6 |
| 1 | USART2 | w_pin_strip:pin_strip_3 | J2 |
| 1 | sot223 | w_smd_trans:sot223 | U6 |
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Questions
How big is the Frame strip PCB?
It measures 50 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Frame strip use?
87 parts, built around the FT231XQ-R. 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 Frame strip KiCad files?
From the akerlund/rgb_driver_3ch repository on GitHub, at the commit this page was made from: the board is kicad/kicad_frame_strip_v3/frame_strip.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Frame strip design in my own project?
Its repository states no licence, so its author keeps all rights: ask akerlund before reusing the design.