Main board
About the Main board
Main board is an open source PCB design by mckay27, published on GitHub. It is a 2-layer board measuring 100 × 103.5 mm, with 66 components from 28 distinct parts.
Other key parts include the SRV05-4-P-T7, BQ24075TRGTR, LTV-217-B-G, PCF8563T/5,518 and MAX17048G+T10. By type, the board carries 20 resistors, 16 capacitors, 10 diodes, 8 ICs, 5 transistors and 3 inductors.
Main components on the Main board
Main board bill of materials (BOM)
66 components, 28 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SRV05-4-P-T7 SRV05-4 LEIDITECH | SOT-23-6 | U1 |
| 1 | BQ24075TRGTR BQ24075RGT Texas Instruments | VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U2 |
| 4 | LTV-217-B-G LTV-217 Lite-On | SOP-4_4.4x2.6mm_P1.27mm | U6, U9, U11, U14 |
| 1 | PCF8563T/5,518 PCF8563T NXP Semiconductors | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | MAX17048G+T10 MAX17048G_T10 Analog Devices | SON50P200X200X80-9N | U10 |
| 1 | 2N7002 onsemi | SOT-23 | Q1 |
| 4 | BC817-40 BC817 Diotec | SOT-23 | Q2, Q3, Q4, Q5 |
| 1 | Q13FC13500004 32.768khz Epson | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 1058 CR2032 Keystone | BatteryHolder_Keystone_1058_1x2032 | BT5 |
| 2 | TS-1187A-B-A-B SW_Push XKB Connectivity | SW_Push_1P1T_XKB_TS-1187A | SW1, SW2 |
| 4 | H8VHD3B D_TVS Litesemi | D_SOD-323 | D1, D8, D9, D10 |
| 6 | C95872 M7 | D_SMA | D2, D3, D4, D5, D6, D7 |
| 3 | BLM18PG121SN1D FerriteBead_Small Murata | L_0603_1608Metric | FB1, FB2, FB3 |
| 3 | 1UF 1uF | C_0603_1608Metric | C1, C6, C7 |
| 6 | 100NF 100nF | C_0603_1608Metric | C2, C5, C13, C14, C15, C16 |
| 2 | 22UF 22uF | C_0603_1608Metric | C3, C4 |
| 4 | 4.7UF 4.7uF | C_0603_1608Metric | C8, C9, C11, C12 |
| 1 | JZ200HV 4.5/20pF Knowles | C_Trimmer_Voltronics_JZ | C10 |
| 1 | 47K 47k | R_0603_1608Metric | R1 |
| 4 | C21189 0R | R_0603_1608Metric | R2, R3, R19, R20 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 5.1K 5.1k | R_0603_1608Metric | R4, R7 |
| 2 | 10K 10k | R_0603_1608Metric | R6, R15 |
| 1 | 3.9K 3.9k | R_0603_1608Metric | R8 |
| 2 | 100R | R_0603_1608Metric | R10, R14 |
| 2 | 4.7K 4.7k | R_0603_1608Metric | R11, R12 |
| 1 | 1K | R_0603_1608Metric | R13 |
| 4 | 120R | R_0603_1608Metric | R16, R18, R21, R22 |
| 1 | 100K 100k | R_0603_1608Metric | R17 |
Main board design files
The KiCad project lives in the mckay27/hstat repository on GitHub; these links point at the commit this page was built from.
Main board: common questions
How big is the Main board?
The Main board measures 100 × 103.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Main board?
66 components, from 28 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 Main board design files?
From the mckay27/hstat 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 Main board design in my own project?
The repository has no license, so all rights stay with mckay27. Use it as a reference, and ask the author before reusing the design.
