Buzzer
About the Buzzer PCB
Buzzer is an open source ESP32 PCB design by scottypres, published on GitHub. It is a 2-layer board measuring 140.7 × 74.9 mm, with 26 components from 16 distinct parts.
Its main chip is the SparkFun Thing Plus ESP32 WROOM-C USB-C, from the ESP32 family. Other key parts include the TP4057 USB-C charger and Comidox 5V Booster. By type, the board carries 6 connectors, 6 resistors, 3 transistors, 3 buzzers, 3 diodes and 2 ICs.
It belongs with the iot & wireless, sensors and power & battery designs in this gallery.
From the project
GitHub: scottypres/Arduino-Paragliding-Varios Local checkout: ~/Documents/GitHub/VarioAdafruitFeatherwing — the folder name predates the rename and is not worth changing; git doesn't care what the working directory is called.
GitHub: scottypres/Arduino-Paragliding-Varios Local checkout: ~/Documents/GitHub/VarioAdafruitFeatherwing — the folder name predates the rename and is not worth changing; git doesn't care what the working directory is called.
Two separate paragliding variometers live here. They share nothing but ideas — different boards, different sketches, different PCBs. Each one keeps its firmware, KiCad projects and notes inside its own top-level folder.
Main components on the Buzzer
Buzzer bill of materials (BOM)
26 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TP4057 USB-C charger | TP4057_Module_12.2x18.5 | U1 |
| 1 | Comidox 5V Booster | Comidox_5V_Booster_10.75x10.75_3Pin | U2 |
| 3 | S8050 | TO-92_Inline | Q1, Q2, Q3 |
| 1 | 2600mAh LiPo JST-PH bottom | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1 |
| 1 | HGLRC M100 Mini GPS | GPS_M100_15x15_4Pin_Back | J5 |
| 1 | BMP581/BMP5xx top pads | Adafruit_BMP390_Breakout_Top | J6 |
| 1 | SHT41 top pads | Adafruit_SHT41_Breakout_Top | J7 |
| 1 | SparkFun Thing Plus ESP32 WROOM-C USB-C | SparkFun_Thing_Plus_ESP32_WROOM_C_Header | J10 |
| 1 | M16968 OLED + Rotary Knob | OLED_M16968_59x35_9Pin | J11 |
| 3 | 12085 Passive Buzzer 42R | Buzzer_12x8.5mm_P7.62mm_Custom | BZ1, BZ2, BZ3 |
| 1 | SS12F44G3 power switch | SS12F44G3_5.9x12.25_P3.00 | SW1 |
| 3 | 1N5819 | D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3 |
| 1 | 47-100uF ELEC | CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 0.1uF CER | Ceramic_Cap_0.1uF_P5.00mm_V1 | C2 |
| 3 | 470R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 3 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1-1, R1-2, R1-3 |
Buzzer design files
The KiCad project lives in the scottypres/Arduino-Paragliding-Varios repository on GitHub; these links point at the commit this page was built from.
Buzzer: common questions
What microcontroller does the Buzzer use?
The Buzzer is built around the SparkFun Thing Plus ESP32 WROOM-C USB-C, from the ESP32 family.
How big is the Buzzer PCB?
The Buzzer measures 140.7 × 74.9 mm, has 2 copper layers and is 1.5 mm thick.
How many components are on the Buzzer?
26 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the Buzzer design files?
From the scottypres/Arduino-Paragliding-Varios repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Buzzer design in my own project?
The repository has no license, so all rights stay with scottypres. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Buzzer 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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