MCU BaseBoard
About the MCU BaseBoard PCB
MCU BaseBoard is an open source PCB design by ExploreEmbedded, published on GitHub. It is a 2-layer board measuring 180 × 125 mm, with 146 components from 79 distinct parts.
Other key parts include the L293D, LM1117, 7805, 24C16 and DS1307. By type, the board carries 33 resistors, 28 connectors, 20 switches, 18 diodes, 10 jumpers and 7 ICs.
Main components on the MCU BaseBoard
MCU BaseBoard bill of materials (BOM)
146 components, 79 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L293D | DIP-16__300_ELL | IC1 |
| 1 | LM1117 | SOT-223 | IC2 |
| 1 | 7805 | LM78XX_v1_XL1 | U1 |
| 1 | 24C16 | DIP-8__300_ELL | U2 |
| 1 | DS1307 | DIP-8__300_ELL | U3 |
| 1 | 40PIN_Breakout | 40pin_breakout | U5 |
| 1 | LCD-jhd12864e-xl | Pin_Header_Straight_1x20 | U7 |
| 7 | BC849 | sc70 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | CRYSTAL_SMD | RTC_Crystal | X1 |
| 1 | CONN_01X02 | Pin_Header_Straight_1x02 | P1 |
| 2 | CONN_01X20 | Pin_Header_Straight_1x20 | P2, P14 |
| 8 | CONN_01X04 | Pin_Header_Straight_1x04 | P3, P4, P5, P19, P25, P26, P27, P29 |
| 7 | CONN_1 | 1pin | P6, P7, P8, P9, P10, P15, P16 |
| 1 | CONN_4 | Pin_Header_Straight_1x04 | P11 |
| 1 | CONN_8 | Pin_Header_Straight_1x08 | P12 |
| 1 | CONN_1 | Pin_Header_Straight_1x01 | P13 |
| 2 | CONN_01X03 | Pin_Header_Straight_1x03 | P17, P22 |
| 1 | CONN_01X06 | Pin_Header_Straight_1x06 | P18 |
| 2 | CONN_01X05 | Pin_Header_Straight_1x05 | P28, P32 |
| 1 | CONN_01X07 | Pin_Header_Straight_1x07 | P30 |
Show 59 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X08 | Pin_Header_Straight_1x08 | P31 |
| 1 | RELAY | Pin_Header_Straight_1x02 | JP1 |
| 2 | M03-SCREW-5MM | bornier3 | JP2, JP3 |
| 1 | SWITCH_ARRAY | Pin_Header_Straight_1x08 | JP4 |
| 1 | MATRIX 4X4 | Pin_Header_Straight_1x08 | JP5 |
| 1 | MOTAR CNTRL | Pin_Header_Straight_1x04 | JP6 |
| 1 | led array | Pin_Header_Straight_1x08 | JP7 |
| 2 | m1 | bornier2 | JP8, JP9 |
| 1 | JUMPER | Pin_Header_Straight_1x02 | JP10 |
| 2 | RELAYPTH | XL-RELAY-12 | K1, K2 |
| 1 | I2C | Pin_Header_Straight_1x03 | K3 |
| 1 | CONN_3 | BARREL_JACK | K4 |
| 1 | LCD_2X16_SIL | WC1602A | LCD1 |
| 2 | RR8 | r_pack8 | RR1, RR2 |
| 1 | TS | Potentiometer_Triwood_RM-065 | RV1 |
| 1 | POT | Potentiometer_Triwood_RM-065 | RV2 |
| 2 | VO | Potentiometer_Triwood_RM-065 | RV3, RV4 |
| 1 | SW_DIP-8 | DIP-16__300_ELL | S1 |
| 1 | MICRO_SD | Micro_SD | SD1 |
| 1 | BUZZERPTH | Buzzer_12x9.5RM7.6 | SG1 |
| 1 | C | SW_PUSH_SMALL_2pin_3D_xl | SW2 |
| 1 | D | SW_PUSH_SMALL_2pin_3D_xl | SW3 |
| 1 | E | SW_PUSH_SMALL_2pin_3D_xl | SW4 |
| 1 | F | SW_PUSH_SMALL_2pin_3D_xl | SW5 |
| 1 | 9 | SW_PUSH_SMALL_2pin_3D_xl | SW6 |
| 1 | 0 | SW_PUSH_SMALL_2pin_3D_xl | SW7 |
| 1 | A | SW_PUSH_SMALL_2pin_3D_xl | SW8 |
| 1 | B | SW_PUSH_SMALL_2pin_3D_xl | SW9 |
| 1 | 5 | SW_PUSH_SMALL_2pin_3D_xl | SW10 |
| 1 | 6 | SW_PUSH_SMALL_2pin_3D_xl | SW11 |
| 1 | 7 | SW_PUSH_SMALL_2pin_3D_xl | SW12 |
| 1 | 8 | SW_PUSH_SMALL_2pin_3D_xl | SW13 |
| 1 | 1 | SW_PUSH_SMALL_2pin_3D_xl | SW14 |
| 1 | 2 | SW_PUSH_SMALL_2pin_3D_xl | SW15 |
| 1 | 3 | SW_PUSH_SMALL_2pin_3D_xl | SW16 |
| 1 | 4 | SW_PUSH_SMALL_2pin_3D_xl | SW17 |
| 1 | INT0 | SW_PUSH_SMALL_2pin_3D_xl | SW18 |
| 1 | INT1 | SW_PUSH_SMALL_2pin_3D_xl | SW19 |
| 1 | SPST | SPSPT_XL | SW20 |
| 4 | LTS-6960HR | 7SegmentLED_LTS6760_LTS6780 | AFF1, AFF2, AFF3, AFF4 |
| 1 | RL1 | LED-1206 | D2 |
| 10 | LED | LED-1206 | D3, D7, D8, D9, D10, D11, D12, D13 +2 |
| 1 | RL2 | LED-1206 | D4 |
| 2 | 1N40XX | Diode-SMA_Handsoldering | D5, D6 |
| 1 | DIODE | Diode-SMA_Handsoldering | D15 |
| 3 | ZENER | Diode-SMA_Handsoldering | D17, D18, D19 |
| 1 | 100uF, 25V | c_elec_8x10.5 | C1 |
| 1 | 100uF,25V | c_elec_8x10.5 | C2 |
| 1 | 0.1uf | C_1206_HandSoldering | C3 |
| 1 | 100nF | C_1206_HandSoldering | C4 |
| 1 | 10uF | C_1206_HandSoldering | C5 |
| 6 | 10k | R_1206_HandSoldering | R1, R2, R10, R17, R18, R26 |
| 8 | 1K | R_1206_HandSoldering | R3, R4, R5, R6, R7, R8, R9, R19 |
| 1 | 2.2k | R_1206_HandSoldering | R13 |
| 2 | 3.3k | R_1206_HandSoldering | R14, R15 |
| 9 | 470 | R_1206_HandSoldering | R16, R27, R29, R30, R31, R32, R33, R34 +1 |
| 2 | 33K | R_1206_HandSoldering | R20, R28 |
| 4 | 68 | R_1206_HandSoldering | R21, R22, R23, R24 |
| 1 | LDR | Pin_Header_Straight_1x02 | R25 |
MCU BaseBoard design files
The KiCad project lives in the ExploreEmbedded/ATmega32_ExploreUltraAvrDevKit repository on GitHub; these links point at the commit this page was built from.
MCU BaseBoard: common questions
How big is the MCU BaseBoard PCB?
The MCU BaseBoard measures 180 × 125 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MCU BaseBoard?
146 components, from 79 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 MCU BaseBoard design files?
From the ExploreEmbedded/ATmega32_ExploreUltraAvrDevKit repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the MCU BaseBoard design in my own project?
The repository has no license, so all rights stay with ExploreEmbedded. Use it as a reference, and ask the author before reusing the design.
