Mo3tasemO/PCB_DesignsA custom-designed, high-performance development board based on the ESP-12E (ESP8266) module. This board features a modern USB-C interface and is designed for seamless prototyping with integrated power regulation and…
Function Generator is an open-source printed circuit board by Mo3tasemO, from the Mo3tasemO/PCB_Designs repository on GitHub. It is a 2-layer board of 89 × 59.1 mm with 28 parts on 28 nets, routed with 169 tracks and 6 vias.
It is built around the NE555P. Its parts include 11 capacitors, 6 resistors, 6 ICs, 2 diodes and 2 connectors.
A custom-designed, high-performance development board based on the ESP-12E (ESP8266) module. This board features a modern USB-C interface and is designed for seamless prototyping with integrated power regulation and USB-to-TTL conversion.
The board is logically divided into four main sections as defined in the schematics:
| Section | Components | Purpose |
|---|---|---|
| Source | AMS1117-3.3, BZW55B3V3, C1, C3 | Voltage regulation and power filtering. |
| USB | USB-C 16P, D2 Diode, C6 | Power input and basic surge protection. |
| USB to TTL | CH340C, C4, C5, R4, R5 | Bridge between PC USB and ESP8266 UART. |
| ESP8266 | ESP-12E, Reset/Flash Switch, I/O Headers | Main processing, GPIO breakout, and boot mode selection. |
The board breaks out all essential GPIOs via two main headers:
Double-layer design with optimized ground pours for RF stability.
Fully assembled view showing component placement and compact form factor.
This project is open-source. Feel free to use, modify, and distribute it for your own IoT applications.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C10, C11, C12, C13 |
| 4 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R3, R4, R6 |
| 4 | 3.3nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C5, C6, C7, C8 |
| 3 | LM741 | OpertionalAmplifier:LM741CN_NOPB | U4, U5, U6 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C14, C16 |
| 1 | 10K | Potentiometer_THT:Rotary Potentiometer_Horizontal | RV1 |
| 1 | 1N4007 | Diode_THT:D_A-405_P10.16mm_Horizontal | D1 |
| 1 | 1nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C9 |
| 1 | 22K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.00mm:PinHeader_1x04_P2.00mm_Vertical | J3 |
| 1 | LED | LED_THT:LED_D3.0mm | D2 |
| 1 | LM7810_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LM7910_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | Screw_Terminal_01x03 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-3-5.0-H_1x03_P5.00mm_Horizontal | J1 |
It measures 89 × 59.1 mm and has 2 copper layers, 1.6 mm thick.
28 parts, built around the NE555P. 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 Mo3tasemO/PCB_Designs repository on GitHub, at the commit this page was made from: the board is Function_Generator/Function_Generator.kicad_pcb and its schematic Breadboard_Power_Supply/Breadboard_Power_Supply.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 Mo3tasemO before reusing the design.
Mo3tasemO/PCB_Designs
A custom-designed, high-performance development board based on the ESP-12E (ESP8266) module. This board features a modern USB-C interface and is designed for seamless prototyping with integrated power regulation and…
Mo3tasemO/PCB_Designs
A custom-designed, high-performance development board based on the ESP-12E (ESP8266) module. This board features a modern USB-C interface and is designed for seamless prototyping with integrated power regulation and…
Mo3tasemO/PCB_Designs
A custom-designed, high-performance development board based on the ESP-12E (ESP8266) module. This board features a modern USB-C interface and is designed for seamless prototyping with integrated power regulation and…
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