PwmController
About the PwmController PCB
PwmController is an open source AVR/Arduino PCB design by bask185, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 74 components from 37 distinct parts.
Its main chip is the ATMEGA328-A, from the AVR/Arduino family. Other key parts include the HEADER_3x2, L78L05_SOT89, LM311 and 24LC256. By type, the board carries 19 switches, 16 resistors, 15 capacitors, 7 transistors, 5 ICs and 5 connectors.
Main components on the PwmController
PwmController bill of materials (BOM)
74 components, 37 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HEADER_3x2 | PinSocket_2x03_P1.27mm_Vertical | U201 |
| 1 | ATMEGA328-A ATmega328-A | TQFP-32_7x7mm_P0.8mm | U202 |
| 1 | L78L05_SOT89 | SOT-89-3 | U301 |
| 1 | LM311 | SOP-8_3.9x4.9mm_P1.27mm | U601 |
| 1 | 24LC256 | SOIC-8_3.9x4.9mm_P1.27mm | U801 |
| 2 | C2145 NPN_TOR | SOT-23 | Q501, Q506 |
| 2 | C15127 P-channel | SOT-23 | Q502, Q504 |
| 2 | C20917 N-channel | SOT-23 | Q503, Q505 |
| 1 | NPN_TOR | SOT-23 | Q601 |
| 1 | CRYSTAL_GND2 Crystal_GND2 | crystal_arduino | Y201 |
| 1 | Jack-DC | BarrelJack_Horizontal | J101 |
| 1 | Screw_Terminal_01x12 | TerminalBlock_Phoenix_MKDS-1,5-12-5.08_1x12_P5.08mm_Horizontal | J104 |
| 2 | RJ12 | RJ12 | J601, J602 |
| 1 | Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J801 |
| 5 | R_Potentiometer | Potentiometer_Alps_RK09K_Single_Vertical | RV701, RV702, RV703, RV704, RV705 |
| 9 | SW_Push | tactile_SMD_6mm | SW101, SW1001, SW1002, SW1003, SW1004, SW1005, SW1006, SW1007 +1 |
| 10 | SW_SPDT | MTS_long_lever | SW601, SW602, SW603, SW604, SW605, SW606, SW607, SW608 +2 |
| 1 | LED | LED_D3.0mm | D201 |
| 1 | 100NF 100nF | C_0603_1608Metric | C6 |
| 2 | 12PF 12pF | C_0603_1608Metric | C201, C203 |
Show 17 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100NF 100nF | C_0402_1005Metric | C202 |
| 1 | 330NF 330nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C301 |
| 2 | 100NF 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C302, C501 |
| 1 | 100UF 100uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C303 |
| 1 | 100nF | C_0402_1005Metric | C601 |
| 6 | 100nF | C_0603_1608Metric | C701, C702, C703, C704, C705, C801 |
| 2 | 0R1 | R_1206_3216Metric | R101, R102 |
| 1 | 6K2 6k2 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R201 |
| 1 | 10K 10k | R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R202 |
| 2 | 15k | R_0603_smalltext | R301, R302 |
| 3 | 1k | R_0603_smalltext | R501, R504, R605 |
| 2 | 10K 10k | R_0603_smalltext | R502, R503 |
| 1 | 47k | R_0603_smalltext | R601 |
| 1 | 150k | R_0603_smalltext | R602 |
| 1 | 10k | R_0603_smalltext | R603 |
| 1 | 22k | R_0603_smalltext | R604 |
| 1 | 220k | R_0603_smalltext | R606 |
PwmController design files
The KiCad project lives in the bask185/Train-Science-DIY repository on GitHub; these links point at the commit this page was built from.
PwmController: common questions
What microcontroller does the PwmController use?
The PwmController is built around the ATMEGA328-A, from the AVR/Arduino family.
How big is the PwmController PCB?
The PwmController measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PwmController?
74 components, from 37 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the PwmController design files?
From the bask185/Train-Science-DIY repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the PwmController design in my own project?
The repository has no license, so all rights stay with bask185. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the PwmController without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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