Room hub
About the Room hub PCB
Room hub is an open source AVR/Arduino PCB design by lucanastasio, published on GitHub. It is a 2-layer board measuring 50 × 50 mm, with 121 components from 52 distinct parts.
Its main chip is the ATmega328PB-A, from the AVR/Arduino family. Other key parts include the TXB0102DCT, 74LVC1G57, TD1465, TJA1051T-3 and APE8865N-33-HF-3. By type, the board carries 38 capacitors, 36 resistors, 12 ICs, 8 inductors, 7 transistors and 7 connectors.
From the project
Home automation stuff
- Dimmer: LED APA102-2020, 4 PWM ch. - Central: 4 PWM ch., radar UART, air valve 4 pin
Main components on the Room hub
Room hub bill of materials (BOM)
121 components, 52 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TXB0102DCT | TSSOP-8_3x3mm_P0.65mm | U2 |
| 1 | ATmega328PB-A | TQFP-32_7x7mm_P0.8mm | U3 |
| 1 | 74LVC1G57 | SOT-363_SC-70-6 | U4 |
| 1 | TD1465 | SOT-23-6 | U5 |
| 1 | TJA1051T-3 | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | APE8865N-33-HF-3 | SOT-23 | U7 |
| 1 | LM393A | VSSOP-8_3.0x3.0mm_P0.65mm | U8 |
| 1 | L78L12_SOT89 | SOT-89-3 | U9 |
| 4 | UCC27517 | SOT-23-5 | U10, U11, U12, U13 |
| 1 | HLK-LD2410C | HLK-LD2410C | M1 |
| 1 | BSS138 | SOT-23 | Q1 |
| 2 | 2N7002K | SOT-23 | Q2, Q3 |
| 2 | BSS83P | SOT-23 | Q4, Q5 |
| 1 | 2N7002DW | SOT-363_SC-70-6 | Q6 |
| 1 | Q_Photo_NPN | LED_D3.0mm_Clear | Q7 |
| 1 | Crystal_GND24 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 2 | Screw_Terminal_01x02 | PhoenixContact_MC_1,5_2-G-3.81_1x02_P3.81mm_Horizontal | J1, J3 |
| 1 | Screw_Terminal_01x04 | PhoenixContact_MC_1,5_4-G-3.5_1x04_P3.50mm_Horizontal | J2 |
| 1 | Screw_Terminal_01x05 | PhoenixContact_MC_1,5_5-G-3.81_1x05_P3.81mm_Horizontal | J4 |
| 1 | Conn_01x04 | JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J5 |
Show 32 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Screw_Terminal_01x02 | PhoenixContact_MSTBA_2,5_2-G_1x02_P5.00mm_Horizontal | J6 |
| 1 | AVR-ISP-6 | PinHeader_2x03_P2.54mm_Vertical | J10 |
| 1 | Fuse | Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 3 | SW_Push | SW_SPST_B3U-1000P | SW2, SW3, SW4 |
| 2 | LED | LED_0603_1608Metric | D1, D2 |
| 1 | D_Zener | D_SMA | D3 |
| 1 | SM712_SOT23 | SOT-23 | D4 |
| 1 | DNP | D_SOD-523 | D5 |
| 2 | ~ | SOT-23_Handsoldering | D7, D8 |
| 5 | FerriteBead | L_0603_1608Metric | FB1, FB7, FB8, FB9, FB10 |
| 1 | FerriteBead | L_1206_3216Metric | FB6 |
| 1 | L_Ferrite_Coupled | L_CommonModeChoke_Coilcraft_0805USB | L1 |
| 1 | 22u | L_1210_3225Metric | L2 |
| 8 | 100n | C_0603_1608Metric | C1, C2, C4, C5, C18, C19, C26, C27 |
| 1 | 1u | C_0603_1608Metric | C3 |
| 2 | 20p | C_0603_1608Metric | C6, C7 |
| 20 | C | C_0603_1608Metric | C8, C9, C10, C12, C14, C15, C17, C23 +12 |
| 1 | C_Polarized | CP_Radial_D6.3mm_P2.50mm | C11 |
| 1 | C | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13 |
| 1 | 10u | C_1206_3216Metric | C16 |
| 1 | 22u | C_0805_2012Metric | C20 |
| 2 | C | C_1206_3216Metric | C21, C22 |
| 1 | C | C_0805_2012Metric | C28 |
| 23 | R | R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8 +15 |
| 1 | R | R_0805_2012Metric | R14 |
| 2 | R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R17 |
| 1 | 0 | R_0603_1608Metric | R19 |
| 1 | 1M | R_0603_1608Metric | R20 |
| 1 | 43k | R_0603_1608Metric | R21 |
| 1 | 8k2 | R_0603_1608Metric | R22 |
| 2 | 1 | R_0603_1608Metric | R26, R29 |
| 4 | 200 | R_0603_1608Metric | R30, R31, R32, R33 |
Room hub design files
The KiCad project lives in the lucanastasio/myHomeAutomation repository on GitHub; these links point at the commit this page was built from.
Room hub: common questions
What microcontroller does the Room hub use?
The Room hub is built around the ATmega328PB-A, from the AVR/Arduino family.
How big is the Room hub PCB?
The Room hub measures 50 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Room hub?
121 components, from 52 distinct parts. The full bill of materials is listed on this page.
Where can I download the Room hub design files?
From the lucanastasio/myHomeAutomation repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Room hub design in my own project?
The repository has no license, so all rights stay with lucanastasio. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Room hub 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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AVR/ArduinoSlider
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