4 layers149 × 95 mm
2 layers150 × 50 mm
Controller
sphawes/gradientbloom2Open Source version of Spectrabloom
- Size
- 150 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 79
- Pads
- 235
- Tracks, vias
- 336, 89
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 Jul 2023
- Updated
- 11 Jan 2026
Overview
Controller is an open-source printed circuit board by sphawes, from the sphawes/gradientbloom repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 150 × 50 mm with 74 parts on 79 nets, routed with 336 tracks and 89 vias.
It is built around the AO3400A. Its parts include 30 resistors, 9 capacitors, 9 transistors, 6 connectors and 5 ICs. It belongs with the STM32 boards of this library.
Main components
1README
README.mdGradientBloom
GradientBloom is an Open Source version of Spectrabloom.
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0805_2012Metric | R2, R5, R8, R11, R14, R17, R20, R23, R26 |
| 9 | 120R | Resistor_SMD:R_0805_2012Metric | R1, R4, R7, R10, R13, R16, R19, R22, R25 |
| 9 | 15R | Resistor_SMD:R_2512_6332Metric | R3, R6, R9, R12, R15, R18, R21, R24, R27 |
| 9 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO14580_Pad | H1, H2, H3, H4 |
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5 |
| 3 | AZ1117-5.0 | Package_TO_SOT_SMD:SOT-223 | U1, U2, U3 |
| 3 | LED0 | Connector_JST:JST_PH_B4B-PH-SM4-TB_1x04-1MP_P2.00mm_Vertical | J1, J3, J4 |
| 2 | 10K | Resistor_SMD:R_0805_2012Metric | R28, R30 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C8, C9 |
| 2 | 15pF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 1 | 220R | Resistor_SMD:R_0805_2012Metric | R29 |
| 1 | 8MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AZ1117-3.3 | Package_TO_SOT_SMD:SOT-223 | U4 |
| 1 | B_POT | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV3 |
| 1 | Barrel_Jack_MountingPin | gradientbloom:DC-012A-20A | J2 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J5 |
| 1 | G*** | kibuzzard-64A36E8B | kibuzzard-64A36E8B |
| 1 | G*** | kibuzzard-64A36F4E | kibuzzard-64A36F4E |
| 1 | G*** | kibuzzard-64A36FD2 | kibuzzard-64A36FD2 |
| 1 | G*** | kibuzzard-64A36F5D | kibuzzard-64A36F5D |
| 1 | G*** | kibuzzard-64A36F3A | kibuzzard-64A36F3A |
| 1 | G_POT | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | MODE/BOOT | Button_Switch_SMD:SW_SPST_B3S-1000 | SW1 |
| 1 | PROGRAMMING_HEADER | feeder:UART_FRICTION_FIT | J6 |
| 1 | R_POT | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV1 |
| 1 | STM32F031C6Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U5 |
Questions
How big is the Controller PCB?
It measures 150 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Controller use?
74 parts, built around the AO3400A. 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 Controller KiCad files?
From the sphawes/gradientbloom repository on GitHub, at the commit this page was made from: the board is pcb/controller/controller.kicad_pcb and its schematic pcb/controller/controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Controller design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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