DIY-Signal-Generator
About the DIY-Signal-Generator PCB
DIY-Signal-Generator is an open source ESP32 PCB design by daumemo, published on GitHub under the MIT license. It is a 2-layer board measuring 84.1 × 47.3 mm, with 139 components from 75 distinct parts.
Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the OPA2196, VCA822, LM7171, TPS65131 and BQ24295. By type, the board carries 57 resistors, 52 capacitors, 9 ICs, 7 connectors, 5 inductors and 4 diodes.
It belongs with the iot & wireless, test & measurement and power & battery designs in this gallery.
From the project
DIY portable Wi-Fi enabled signal generator
A device, used for generating electrical signals. More infromation: https://daumemo.com/finished-diy-portable-wi-fi-function-generator-part-17
Repository includes all files: firmware code, schematics, PCB files. STL files for the enclosure can be found here: https://www.thingiverse.com/thing:4596954
Device's specification: - 3.5 inch IPS LCD with capacitive touch panel - 2200 mAh Li-Po battery - ESP-32 MCU - AD9833 for sine and triangle waveform generation (up to 25 MHz) - Square wave and PWM generated by the MCU (up to 5 MHz) - The device can be controlled through LCD or WEB interface -…
Main components on the DIY-Signal-Generator
DIY-Signal-Generator bill of materials (BOM)
139 components, 75 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OPA2196 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U1 |
| 1 | VCA822 | MSOP-10_3x3mm_Pitch0.5mm | U2 |
| 1 | LM7171 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U3 |
| 1 | TPS65131 | QFN-24-1EP_4x4mm_Pitch0.5mm | U4 |
| 1 | BQ24295 | QFN-24-1EP_4x4mm_Pitch0.5mm | U5 |
| 1 | LDL1117-3.0 | SOT-223-3_TabPin2 | U6 |
| 1 | LV52117QA | LV52117QA | U7 |
| 1 | ESP32-WROOM-32 | ESP32-WROOM-32 | U8 |
| 1 | AD9833_module | AD9833_module | U9 |
| 1 | BC847 | SOT-23 | Q1 |
| 2 | NTR4003NT1G | SOT-23 | Q2, Q3 |
| 1 | Wave_Out | SMA_Samtec_SMA-J-P-X-ST-EM1_EdgeMount | J1 |
| 1 | PWM_Out | SMA_Samtec_SMA-J-P-X-ST-EM1_EdgeMount | J2 |
| 1 | USB_C_Receptacle_USB2.0 | HRO-TYPE-C-31-M-12-HandSoldering | J3 |
| 1 | UART | Pin_Header_Straight_1x06_Pitch2.54mm | J8 |
| 1 | I2C | User_FPC_4pin_05pitch_bot_cont | J9 |
| 1 | 40pin_LCD | User_FPC_40pin_05pitch_BottomContact | J10 |
| 1 | LCD_Touch | User_FPC_6pin_05pitch_top_cont | J11 |
| 1 | G6K-2 | Relay_DPDT_Omron_G6K-2F-Y | K1 |
| 1 | POWER | Switch | SW1 |
Show 55 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LED | LED_0603 | D1 |
| 2 | PMEG3010EH | D_SOD-123 | D2, D3 |
| 1 | D | D_SOD-123 | D4 |
| 4 | 4u7 | L_Taiyo-Yuden_NR-40xx_HandSoldering | L1, L2, L4, L5 |
| 1 | 2u2 | L_Taiyo-Yuden_NR-40xx_HandSoldering | L3 |
| 6 | 1u | C_0603 | C1, C2, C16, C18, C22, C49 |
| 5 | 470n | C_0603 | C3, C4, C9, C11, C43 |
| 10 | 10u | C_0603 | C5, C29, C30, C34, C35, C40, C44, C45 +2 |
| 3 | 10n | C_0603 | C6, C23, C47 |
| 1 | 22u | C_0603 | C7 |
| 6 | 100n | C_0603 | C8, C13, C15, C17, C20, C37 |
| 3 | 2u2 | C_0603 | C10, C12, C39 |
| 1 | C | C_0603 | C14 |
| 2 | 100u | CP_Tantalum_Case-B_EIA-3528-21_Reflow | C19, C41 |
| 2 | 4u7 | C_0603 | C21, C27 |
| 1 | 220n | C_0603 | C24 |
| 1 | 4n7 | C_0603 | C25 |
| 1 | 47n | C_0603 | C26 |
| 2 | 4u7 | C_0805 | C28, C31 |
| 2 | 22u | CP_Tantalum_Case-B_EIA-3528-21_Reflow | C32, C33 |
| 1 | 220uf | CP_Tantalum_Case-C_EIA-6032-28_Reflow | C36 |
| 2 | 12p | C_0603 | C38, C42 |
| 1 | 100u | C_1206 | C46 |
| 2 | 5n6 | C_0603 | C51, C52 |
| 2 | 1k3 | R_0603 | R1, R9 |
| 2 | 3k9 | R_0603 | R2, R10 |
| 4 | 22k | R_0603 | R3, R4, R13, R14 |
| 2 | 2k | R_0603 | R5, R6 |
| 1 | 9k1 | R_0603 | R7 |
| 3 | 1k | R_0603 | R8, R12, R15 |
| 1 | 200 | R_0603 | R11 |
| 7 | 0 | R_0603 | R16, R29, R30, R31, R32, R54, R55 |
| 1 | na | R_0603 | R17 |
| 4 | 240 | R_0603 | R18, R19, R20, R33 |
| 1 | 910 | R_0603 | R21 |
| 1 | 18k | R_0603 | R22 |
| 1 | 0 | R_0805 | R23 |
| 2 | 100 | R_0603 | R24, R46 |
| 2 | 5k1 | R_0603 | R25, R26 |
| 4 | 10k | R_0603 | R27, R28, R34, R50 |
| 1 | 1k8 | R_0603 | R35 |
| 1 | 100k | R_0603 | R36 |
| 3 | 1M | R_0603 | R37, R40, R53 |
| 1 | 4k3 | R_0603 | R38 |
| 2 | 20k | R_0603 | R39, R43 |
| 1 | 110k | R_0603 | R41 |
| 1 | 15k | R_0603 | R42 |
| 1 | 160k | R_0603 | R44 |
| 1 | 51k | R_0603 | R45 |
| 1 | 130k | R_0603 | R47 |
| 1 | 56k | R_0603 | R48 |
| 1 | 12k | R_0603 | R49 |
| 2 | 3k3 | R_0603 | R51, R52 |
| 1 | 1R | R_1206 | R56 |
| 1 | 470 | R_0603 | R57 |
DIY-Signal-Generator design files
The KiCad project lives in the daumemo/DIY-Signal-Generator repository on GitHub; these links point at the commit this page was built from.
DIY-Signal-Generator: common questions
What microcontroller does the DIY-Signal-Generator use?
The DIY-Signal-Generator is built around the ESP32-WROOM-32, from the ESP32 family.
How big is the DIY-Signal-Generator PCB?
The DIY-Signal-Generator measures 84.1 × 47.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DIY-Signal-Generator?
139 components, from 75 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 DIY-Signal-Generator design files?
From the daumemo/DIY-Signal-Generator repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the DIY-Signal-Generator design in my own project?
Yes, under the terms of its MIT license, which daumemo chose for the repository.
Can I test firmware for the DIY-Signal-Generator 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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