Mega2560plus
About the Mega2560plus PCB
Mega2560plus is an open source ESP32 PCB design by sneakylizard123-4, published on GitHub. It is a 4-layer board measuring 53.3 × 101.6 mm, with 138 components from 58 distinct parts.
Its main chip is the ESP32-S3-WROOM-1U-N16R8, from the ESP32 family. Other key parts include the USBLC6-2SC6, FT231XS, USBLC6-4SC6, W25Q128JVS and ATMEGA2560-16A. By type, the board carries 46 capacitors, 33 resistors, 20 diodes, 17 ICs, 14 connectors and 3 switches.
It belongs with the iot & wireless, sensors and power & battery designs in this gallery.
From the project
Mega 2560+ is an upgraded version of the Arduino Mega 2560. It keeps the same form factor and pinout as the original so it still works with every Mega shield, but it adds an onboard sensor suite and an ESP32-S3 co-processor for WiFi, Bluetooth, and sensor reading.
Mega 2560+ is an upgraded version of the Arduino Mega 2560. It keeps the same form factor and pinout as the original so it still works with every Mega shield, but it adds an onboard sensor suite and an ESP32-S3 co-processor for WiFi, Bluetooth, and sensor reading.
I kept using a Mega plus a pile of breakout boards, a CO2 sensor here, an IMU there, a WiFi module taped on somewhere. It was messy and fragile. I wanted a single board I can just drop into a project that already knows the room around it: temperature, humidity, air quality, CO2, and motion. And since everything talks to the network…
Main components on the Mega2560plus
Mega2560plus bill of materials (BOM)
138 components, 58 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | USBLC6-2SC6 | SOT-23-6 | U1, U3 |
| 1 | FT231XS | SSOP-20_3.9x8.7mm_P0.635mm | U2 |
| 1 | ESP32-S3-WROOM-1U-N16R8 | ESP32-S3-WROOM-1U | U4 |
| 1 | USBLC6-4SC6 | SOT-23-6 | U5 |
| 1 | W25Q128JVS | SOIC-8_5.3x5.3mm_P1.27mm | U6 |
| 1 | ATMEGA2560-16A ATmega2560-16A | TQFP-100_14x14mm_P0.5mm | U7 |
| 1 | FM24C64C | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | TPS62163DSG | WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm_ThermalVias | U9 |
| 2 | TLV75733PDBV | SOT-23-5 | U10, U11 |
| 1 | SCD41-D-R2 | Sensirion_SCD4x-1EP_10.1x10.1mm_P1.25mm_EP4.8x4.8mm | U12 |
| 1 | BME680 | Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U13 |
| 1 | LSM6DSL | LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U14 |
| 1 | DS3231M | SOIC-16W_7.5x10.3mm_P1.27mm | U15 |
| 2 | SN74LVC1T45DBV | SOT-23-6 | U16, U17 |
| 1 | DMP3013SFV | Diodes_PowerDI3333-8 | Q1 |
| 1 | USB_C_RECEPTACLE_USB2.0_14P USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | CONN_02X02_COUNTER_CLOCKWISE USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J2 |
| 1 | MICRO_SD_CARD_DET2 Micro_SD_Card_Det2 | microSD_HC_Hirose_DM3D-SF | J3 |
| 1 | 2.1mm ID 5.5mm OD PJ-102AH | BarrelJack_CUI_PJ-102AH_Horizontal | J4 |
| 2 | CONN_01X04_MOUNTINGPIN Conn_01x04_MountingPin | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J5, J6 |
Show 38 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | CONN_01X08 Conn_01x08 | PinSocket_1x08_P2.54mm_Vertical | J7, J8, J9, J13, J14 |
| 1 | CONN_02X18_ODD_EVEN Conn_02x18_Odd_Even | PinHeader_2x18_P2.54mm_Vertical | J11 |
| 1 | CONN_01X10 Conn_01x10 | PinHeader_1x10_P2.54mm_Vertical | J12 |
| 1 | CONN_02X06_COUNTER_CLOCKWISE Conn_02x06_Counter_Clockwise | PinHeader_2x06_P2.54mm_Vertical | J15 |
| 1 | CR2032 | BatteryHolder_Keystone_1060_1x2032 | BT1 |
| 2 | 500MA 500mA | C_1812_4532Metric | F1, F2 |
| 3 | SW_SPST | SW_SPST_PTS645Sx43SMTR92 | SW1, SW2, SW3 |
| 2 | MBR0520 | D_SOD-123 | D1, D2 |
| 8 | WS2812B-2020 | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D3, D4, D5, D9, D13, D17, D19, D20 |
| 1 | BLUE | LED_Avago_PLCC4_3.2x2.8mm_CW | D6 |
| 1 | PURPLE | LED_Avago_PLCC4_3.2x2.8mm_CW | D7 |
| 1 | ORANGE | LED_Avago_PLCC4_3.2x2.8mm_CW | D8 |
| 1 | WHITE | LED_Avago_PLCC4_3.2x2.8mm_CW | D10 |
| 2 | RED | LED_Avago_PLCC4_3.2x2.8mm_CW | D11, D12 |
| 3 | GREEN | LED_Avago_PLCC4_3.2x2.8mm_CW | D14, D15, D16 |
| 1 | YELLOW | LED_Avago_PLCC4_3.2x2.8mm_CW | D18 |
| 1 | 2.2uH Coilcraft XAL5030-222MEC | L_Coilcraft_XAL5030-XXX | L1 |
| 36 | 0.1UF 0.1uF | C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C8, C9 +28 |
| 2 | 10UF 10uF | C_0603_1608Metric | C7, C17 |
| 1 | 18PF 0.1uF | C_0603_1608Metric | C11 |
| 1 | 18PF 16pF | C_0603_1608Metric | C12 |
| 1 | 0.1UF 16pF | C_0603_1608Metric | C13 |
| 1 | 22UF 22uF | C_0603_1608Metric | C19 |
| 4 | 1UF 1uF | C_0603_1608Metric | C22, C23, C26, C27 |
| 2 | 5.1K 5.1k | R_0603_1608Metric | R1, R3 |
| 3 | 22 | R_0603_1608Metric | R2, R4, R7 |
| 5 | 10K 10k | R_0603_1608Metric | R5, R12, R13, R14, R15 |
| 1 | 5.1k | R_0603_1608Metric | R6 |
| 1 | 4.7K 5.1k | R_0603_1608Metric | R8 |
| 1 | 4.7K 22 | R_0603_1608Metric | R9 |
| 2 | 10K 4.7k | R_0603_1608Metric | R10, R11 |
| 2 | 4.7K 10k | R_0603_1608Metric | R16, R17 |
| 2 | 100K 4.7k | R_0603_1608Metric | R18, R19 |
| 2 | 10K 100k | R_0603_1608Metric | R20, R21 |
| 2 | 10k | R_0603_1608Metric | R22, R23 |
| 6 | 1k | R_0603_1608Metric | R24, R25, R26, R27, R28, R29 |
| 2 | 2.2K 1k | R_0603_1608Metric | R30, R31 |
| 2 | 2.2k | R_0603_1608Metric | R32, R33 |
Mega2560plus design files
The KiCad project lives in the sneakylizard123-4/Mega2560plus repository on GitHub; these links point at the commit this page was built from.
Mega2560plus: common questions
What microcontroller does the Mega2560plus use?
The Mega2560plus is built around the ESP32-S3-WROOM-1U-N16R8, from the ESP32 family.
How big is the Mega2560plus PCB?
The Mega2560plus measures 53.3 × 101.6 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Mega2560plus?
138 components, from 58 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 Mega2560plus design files?
From the sneakylizard123-4/Mega2560plus 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 Mega2560plus design in my own project?
The repository has no license, so all rights stay with sneakylizard123-4. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Mega2560plus without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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