Mainboard
About the Mainboard PCB
Mainboard is an open source NXP PCB design by annegautham, published on GitHub under the MIT license. It is a 4-layer board measuring 106.1 × 132 mm, with 125 components from 27 distinct parts.
Its main chip is the TEENSY4.0, from the NXP family. Other key parts include the REF102AU/2K5, DAC8814IBDBT, TL072, TL074 and ADG419BR. By type, the board carries 56 capacitors, 40 resistors, 14 ICs, 6 connectors, 6 jumpers and 3 modules.
From the project
Repo for STM prototype personal project
Main components on the Mainboard
Mainboard bill of materials (BOM)
125 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | REF102AU/2K5 REF102AU_2K5 | SOIC127P600X175-8N | IC1 |
| 1 | DAC8814IBDBT | SOP65P780X200-28N | IC4 |
| 1 | TEENSY4.0 Teensy4.0 | Teensy40 | U1 |
| 4 | TL072 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm_ThermalVias | U2, U3, U4, U10 |
| 2 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U5, U6 |
| 3 | ADG419BR | SOIC-8_3.9x4.9mm_P1.27mm | U7, U11, U12 |
| 1 | LTC2326CMS-16-PBF | MSOP-16_MS_LIT | U8 |
| 1 | LT1469CS8-TRPBF | SO-8_S_LIT | U9 |
| 3 | POLOLU_BREAKOUT_A4988 Pololu_Breakout_A4988 | Pololu_Breakout-16_15.2x20.3mm | A1, A2, A3 |
| 3 | 5745782-6 | 57457826 | J1, J2, J3 |
| 3 | CONN_01X02_PIN Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J4, J5, J6 |
| 6 | Jumper | SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP12, JP29, JP30, JP31, JP32, JP33 |
| 1 | 2.2U 2.2u | C_0805_2012Metric | C8 |
| 10 | 4.7N 4.7n | C_0805_2012Metric | C10, C11, C12, C13, C14, C15, C24, C25 +2 |
| 8 | 3.3N 3.3n | C_0805_2012Metric | C16, C21, C22, C23, C29, C30, C31, C32 |
| 26 | 100N 100n | C_0805_2012Metric | C17, C18, C19, C20, C28, C34, C36, C37 +18 |
| 1 | 47U 47u | C_0805_2012Metric | C33 |
| 6 | 10U 10u | CP_Radial_D5.0mm_P2.00mm | C35, C77, C78, C81, C82, C84 |
| 4 | 100U 100u | CP_Radial_D6.3mm_P2.50mm | C79, C80, C83, C85 |
| 1 | 1k | R_0805_2012Metric | R19 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 23 | 3k | R_0805_2012Metric | R20, R22, R23, R25, R26, R27, R28, R29 +15 |
| 4 | 220 | R_0805_2012Metric | R21, R24, R37, R38 |
| 1 | 1M2 | R_0805_2012Metric | R30 |
| 2 | 10K 10k | R_0805_2012Metric | R39, R64 |
| 4 | 1.5K 1.5k | R_0805_2012Metric | R40, R41, R42, R43 |
| 4 | 470 | R_0805_2012Metric | R59, R61, R62, R63 |
| 1 | 100 | R_0805_2012Metric | R60 |
Mainboard design files
The KiCad project lives in the annegautham/STM repository on GitHub; these links point at the commit this page was built from.
Mainboard: common questions
What microcontroller does the Mainboard use?
The Mainboard is built around the TEENSY4.0, from the NXP family.
How big is the Mainboard PCB?
The Mainboard measures 106.1 × 132 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Mainboard?
125 components, from 27 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 Mainboard design files?
From the annegautham/STM 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 Mainboard design in my own project?
Yes, under the terms of its MIT license, which annegautham chose for the repository.
Can I test firmware for the Mainboard without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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