4 layers97.5 × 99.9 mm
Esp32 wled controller
fellettigiacomo/esp32-WLED-4ch-controller
Open source 4 Channel esp32-powered WLED controller with 4 relays and built in level shifter
100 parts16CERN-OHL-S-2.0
2 layers39 × 46 mm
Microll
RubenTrov/MicrollThis is going to be a small PCB with a microcontroller, IMU and a form of wirelessly transmitting that information though wifi/bluetooh. It will serve as a central piece for a lot of future IoT projects.
- Size
- 39 × 46 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 85
- Pads
- 255
- Tracks, vias
- 422, 58
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 10 Sep 2023
- Updated
- 7 Sep 2024
Overview
Microll is an open-source printed circuit board by RubenTrov, from the RubenTrov/Microll repository on GitHub. It is a 2-layer board of 39 × 46 mm with 40 parts on 85 nets, routed with 422 tracks and 58 vias.
It is built around the STM32G0B1CBT6, ESP32-C3-WROOM-02-N4 and BSD235NH6327XTSA1, with the LSM6DSL, NX7002AKW,115-VB and USBLC6-2P6 among its other parts. Its parts include 11 resistors, 9 capacitors, 8 ICs, 4 connectors and 3 diodes. It belongs with the ESP32, STM32 and RISC-V boards of this library.
Main components
7
STM32G0B1CBT6
LQFP-48(7x7)-40℃~+85℃ 1.7V~3.6V 128KB 144KB 32 Bit 44 64MHz ARM Cortex-M0+ Built-in+External FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
ESP32-C3-WROOM-02-N4
SMD,20x18mm-105dBm -40℃~+85℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 Chip Integrated Bluetooth function、Support USB interface On-board PCB Antenna UART、SPI、I2C、I2S、JTAG、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi ModulesBSD235NH6327XTSA1
PG-SOT363-6PG-SOT363-6 MOSFETs ROHSInfineon TechnologiesMOSFETs
LSM6DSL
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 3uA 4KB IMU (accelerometer + gyroscope) Motion event detection、Synchronization and timestamp SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
NX7002AKW,115-VB
SOT-323SOT-323 MOSFETs ROHSVBsemi ElecMOSFETs
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
PMEG6020AELRX
SOD-123W-65℃~+150℃ 2A 60V 670mV@2A 700nA@60V Independent SOD-123W Schottky Diodes ROHSNexperiaSchottky Diodes
README
README.mdThis is going to be a small PCB with a microcontroller, IMU and a form of wirelessly transmitting that information though wifi/bluetooh. It will serve as a central piece for a lot of future IoT projects.
#How to program the PCB This board has two microcontrollers that share the Same USB Port through a switch. ##Programming the STM32
- The USB selector switch should be flipped to the SM32 position.
- Open STM32CubeIDE and load the file that you wish to flash to the microcontroller.
- Set the Boot pin High by setting the Boot on the DIP switch to position 2 and then from the ON side of the switch connect a jumper to the 3.3V GPIO header.
- Connect the USB to the PCB to power on the board. This should make the STM32 be detected by the programmer.
- Erase the memory and upload the file.
- Disconnect the PCB from the USB and switch the position of Boot on the DIP switch.
- Plug the USB back in the PCB and it will begin executing the program that was uploaded!
##Programming the ESP32
- You may need to connect the GPIO0 pin to GND using a jumper cable before powering on the board
- Flip the USB switch to the ESP32 position
- Flip the EN on the DIP switch to the on position to connect it to 3.3V
- Power on the board by plugging in the USB
- Disconnect the GPIO0 pin from GND
- The board should now be ready to program. Use the editor of your choice for this.
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R5, R8, R9, R10, R11 |
| 5 | 100nF | Capacitor_SMD:C_0402_1005Metric | C3, C5, C6, C7, C8 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C9 |
| 3 | 330 | Resistor_SMD:R_0402_1005Metric | R1, R2, R3 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 452403012014 | DPDT_Switch_x2:DPDT_Switch_x2 | U5 |
| 1 | BSD235NH6327XTSA1 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U4 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J3 |
| 1 | Conn_01x12 | Connector_PinSocket_2.54mm:PinSocket_1x12_P2.54mm_Vertical | J1 |
| 1 | Conn_02x10_Top_Bottom | Connector_PinSocket_2.54mm:PinSocket_2x10_P2.54mm_Vertical | J2 |
| 1 | ESP32-C3-WROOM-02-N4 | ESP32:ESP32-C3-WROOM-02-N4 | U1 |
| 1 | LED_ARGB | RGB_LED:APTF1616LSEEZGKQBKC | D1 |
| 1 | LSM6DSL | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U6 |
| 1 | NX7002AKW,115 | Package_TO_SOT_SMD:SOT-323_SC-70 | U8 |
| 1 | PMEG6020AELR | Diode_SMD:D_SOD-123 | D2 |
| 1 | STM32G0B1CBT6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | SW_DIP_x03 | 416131160803:WE_DIP_SWITCH_3_POS | SW4 |
| 1 | TLV76733DRVx | Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_ThermalVias | U2 |
| 1 | UFZV15B | Diode_SMD:D_SOD-323F | D3 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U9 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
Questions
How big is the Microll PCB?
It measures 39 × 46 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microll use?
40 parts, built around the STM32G0B1CBT6, ESP32-C3-WROOM-02-N4, BSD235NH6327XTSA1 and LSM6DSL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Microll KiCad files?
From the RubenTrov/Microll repository on GitHub, at the commit this page was made from: the board is Microll.kicad_pcb and its schematic Microll.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microll design in my own project?
Its repository states no licence, so its author keeps all rights: ask RubenTrov before reusing the design.
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