nikolasbtks/BitSeries-PCBAn open-source hardware design series for embedded and IoT development applications, built using Altium Designer and KiCad and based on STM32 and ESP32 microcontrollers.
MiniBit is an open-source printed circuit board by nikolasbtks, from the nikolasbtks/BitSeries-PCB repository on GitHub. It is a 2-layer board of 40 × 55 mm with 28 parts on 54 nets, routed with 288 tracks and 37 vias.
It is built around the ESP32-S3-MINI-1-N8, AP2112K-3.3 and USBLC6-2SC6. Its parts include 8 capacitors, 8 resistors, 5 connectors, 3 ICs and 2 switches. It belongs with the home automation and IoT boards and the ESP32 boards of this library.
This series ia a collection of custom development boards built for IoT applications and embedded systems. Each board in the BitSeries is tailored for different use cases, while focusing on periphreal-rich design and usability.
PlusBit is powered by the STM32F446RCT6 microcontroller and ESP32-WROOM-32E module. It is designed for embedded systems that demands performance and memory storage. This board ideal for applications where processing power is required.
MiniBit is build around the ESP32-S3-Mini module. It is designed for IoT systems with multiple peripheral interfaces, wireless connectivity and a small footprint.
You can check the schematics and pinout for each board in its respective directory, which includes documentation and resources.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1, J2, J3, J4 |
| 3 | 0.1μF | Capacitor_SMD:C_0402_1005Metric | C1, C3, C4 |
| 2 | 10nF | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | 1k5 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | 1μF | Capacitor_SMD:C_0402_1005Metric | C5, C6 |
| 2 | 22R | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | SW_SPST | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1, SW2 |
| 1 | 100R | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 22μF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 500mA | Fuse:Fuse_0402_1005Metric | F1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | ESP32-S3-MINI-1 | RF_Module:ESP32-S2-MINI-1 | U1 |
| 1 | Red LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J5 |
It measures 40 × 55 mm and has 2 copper layers, 1.6 mm thick.
28 parts, built around the ESP32-S3-MINI-1-N8, AP2112K-3.3 and USBLC6-2SC6. 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.
From the nikolasbtks/BitSeries-PCB repository on GitHub, at the commit this page was made from: the board is MiniBit-PCB/hardware/MiniBit.kicad_pcb and its schematic MiniBit-PCB/hardware/MiniBit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask nikolasbtks before reusing the design.
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