LED MCU
About the LED MCU PCB
LED MCU is an open source Microchip SAM PCB design by joemadeus, published on GitHub. It is a 2-layer board measuring 50 × 50 mm, with 72 components from 38 distinct parts.
Its main chip is the ATSAML21E16B-AUT, from the Microchip SAM family. By type, the board carries 4 LEDs, 4 capacitors, 3 transistors, 3 resistors, 2 connectors and 1 IC.
From the project
A collection of circuits and similar
Main components on the LED MCU
LED MCU bill of materials (BOM)
72 components, 38 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATSAML21E16B-AUT | TQFP-32_7x7mm_P0.8mm | U1 |
| 3 | Q_DUAL_NMOS | SO-8_3.9x4.9mm_P1.27mm | Q1, Q2, Q3 |
| 1 | Conn_02x05_Odd_Even | PinHeader_2x05_P1.27mm_Vertical | J1 |
| 1 | Conn_02x06_Row_Letter_Last | PinHeader_2x06_P1.27mm_Vertical | J2 |
| 3 | 4.7u | C_0805_2012Metric | BAT_C1, BAT_C2, PWR_C4 |
| 1 | 0.1u | C_0805_2012Metric | BAT_C3 |
| 1 | 5k | R_0805_2012Metric | BAT_R1 |
| 4 | 1k | R_0805_2012Metric | BAT_R2, IN_R1, IN_R2, IN_R3 |
| 1 | LTC2942-1 | DFN-6-1EP_3x2mm_P0.5mm_EP1.65x1.35mm | BAT_U1 |
| 1 | MCP73831-2-OT | SOT-23-5 | BAT_U2 |
| 1 | CONN_BAT | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | CONN_BAT1 |
| 1 | USB | USB_Micro-B_Wuerth_629105150521_CircularHoles | CONN_USB1 |
| 1 | HELLO | D_0805_2012Metric_Castellated | HELLO_LED1 |
| 11 | 6.8 | R_1206_3216Metric | HELLO_R1, RB2, RW1-1, RW1-2, RW1-3, RW2-1, RW2-2, RW2-3 +3 |
| 4 | 100n | C_0805_2012Metric | IN_C1, IN_C2, IN_C3, PWR_C1 |
| 1 | Conn_02x03_Odd_Even | PinSocket_2x03_P1.27mm_Vertical | IN_J1 |
| 1 | Conn_01x04 | PinHeader_1x04_P1.27mm_Vertical | J_I2C1 |
| 2 | Conn_01x02 | PinHeader_1x02_P1.27mm_Vertical | J_RESET1, PWR_CONN1 |
| 3 | LED_W | D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | LED_W1, LED_W2, LED_W3 |
| 1 | 330uF | CP_Radial_D6.3mm_P2.50mm | PWR_C2 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 1u | C_0805_2012Metric | PWR_C3, PWR_C5, PWR_C7 |
| 1 | 10u | C_0805_2012Metric | PWR_C6 |
| 1 | D_Schottky | D_SOD-123F | PWR_D1 |
| 1 | DMG2301L | SOT-23 | PWR_Q1 |
| 1 | 10k | R_0805_2012Metric | PWR_R1 |
| 1 | TPD3E001DRLR | SOT-553 | PWR_U1 |
| 1 | AP2112K-3.3 | SOT-23-5 | PWR_U2 |
| 1 | LD1117S33TR_SOT223 | SOT-223-3_TabPin2 | PWR_U3 |
| 6 | 470 | R_1206_3216Metric | RB1, RG1, RR1, RW1, RW2, RW3 |
| 2 | 10 | R_1206_3216Metric | RG2, RR2 |
| 1 | LED_B | LED_D3.0mm | LED_B1 |
| 1 | LED_G | LED_D3.0mm | LED_G1 |
| 1 | LED_O | LED_0805_2012Metric_Castellated | LED_O1 |
| 1 | LED_R | LED_D3.0mm | LED_R1 |
| 3 | 100n | C_0805_2012Metric | C1, C3, C4 |
| 1 | 1u | C_0805_2012Metric | C2 |
| 1 | 1k | R_0805_2012Metric | R1 |
| 2 | 4.7k | R_0805_2012Metric | R2, R3 |
LED MCU design files
The KiCad project lives in the joemadeus/electronica repository on GitHub; these links point at the commit this page was built from.
LED MCU: common questions
What microcontroller does the LED MCU use?
The LED MCU is built around the ATSAML21E16B-AUT, from the Microchip SAM family.
How big is the LED MCU PCB?
The LED MCU measures 50 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the LED MCU?
72 components, from 38 distinct parts. The full bill of materials is listed on this page.
Where can I download the LED MCU design files?
From the joemadeus/electronica repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the LED MCU design in my own project?
The repository has no license, so all rights stay with joemadeus. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the LED MCU without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.
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