Sonar
About the Sonar PCB
Sonar is an open source ESP32 PCB design by QuickRecon, published on GitHub under the MIT license. It is a 2-layer board measuring 74.9 × 47 mm, with 74 components from 33 distinct parts.
Its main chip is the C701342, from the ESP32 family. Other key parts include the C6568, TPS2121, C2876265, C444380 and C468235. By type, the board carries 31 resistors, 19 capacitors, 9 ICs, 6 transistors, 6 diodes and 1 fuse.
It belongs with the iot & wireless and power & battery designs in this gallery.
From the project
A diver portable sonar
SonarMK2 is a standalone underwater sonar imaging system. An ESP32 drives a Blue Robotics Ping360 mechanical scanning sonar over RS-485, reads depth from a pressure sensor, and hosts a WiFi access point that serves a real-time polar sonar display to any browser that connects. The ESP hosts a webserver and "realtime" data is streamed over websockets, the page also uses the browser datastore to record the sonar information which can be downloaded and replayed using text. There is eventual intention to use the sonar for SLAM and some data analysis has occured in that direction, however this is…
Main components on the Sonar
Sonar bill of materials (BOM)
74 components, 33 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C6568 CP2102N-Axx-xQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U1 |
| 1 | TPS2121 | Texas_VQFN-HR-12_2x2.5mm_P0.5mm | U2 |
| 1 | C701342 ESP32-WROOM-32 | ESP32-WROOM-32 | U3 |
| 1 | C2876265 TPS7A2550DRVR | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_ThermalVias | U4 |
| 1 | C444380 LM1085-3.3 | TO-263-3_TabPin2 | U5 |
| 1 | C468235 LMR62014XMF | SOT-23-5 | U6 |
| 1 | C2871143 TCAN334 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | C81186 ST485EBDR | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | C2887941 MS5837-30BA | TE_MS5837-xxBA | U9 |
| 3 | C2150 SS8050 | SOT-23 | Q1, Q2, Q4 |
| 2 | C382300 SI2302 | SOT-23 | Q3, Q6 |
| 1 | C10487 SI2301CDS | TSOT-23 | Q5 |
| 1 | C108518 2A | Fuseholder_Littelfuse_Nano2_154x | F1 |
| 1 | RE_MODE | SolderJumper-3_P1.3mm_Bridged2Bar12_RoundedPad1.0x1.5mm | JP1 |
| 4 | C84256 LED | LED_0805_2012Metric | D1, D2, D3, D4 |
| 1 | C2831524 PESD15VS2UT | SOT-23 | D5 |
| 1 | C5204745 MBR0520 | D_SOD-123 | D6 |
| 1 | C325966 10u | L_SunItech_SLO0530H | L1 |
| 3 | C1525 100n | C_0402_1005Metric | C1, C7, C12 |
| 7 | C14663 100n | C_0603_1608Metric | C2, C6, C8, C9, C17, C18, C19 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C377773 2.2u | C_0805_2012Metric | C3, C4 |
| 3 | C96446 10u | C_0603_1608Metric | C5, C11, C16 |
| 2 | C1779 4.7u | C_0805_2012Metric | C10, C13 |
| 2 | C1546 100p | C_0402_1005Metric | C14, C15 |
| 5 | C4109 2k | R_0402_1005Metric | R1, R2, R3, R4, R9 |
| 9 | C25744 10k | R_0402_1005Metric | R5, R6, R11, R13, R14, R16, R18, R19 +1 |
| 8 | C25741 100k | R_0402_1005Metric | R7, R8, R10, R12, R15, R17, R24, R26 |
| 2 | C25752 12k | R_0402_1005Metric | R21, R27 |
| 3 | C25862 1.2k | R_0402_1005Metric | R22, R28, R29 |
| 1 | C25756 15k | R_0402_1005Metric | R23 |
| 1 | C28636 560 | R_0805_2012Metric | R25 |
| 1 | C22976 2M | R_0603_1608Metric | R30 |
| 1 | C25822 680k | R_0603_1608Metric | R31 |
Sonar design files
The KiCad project lives in the QuickRecon/sonar repository on GitHub; these links point at the commit this page was built from.
- LayoutEDA/SonarMK2.kicad_pcb
- SchematicEDA/SonarMK2.kicad_sch
- BOMEDA/production/bom.csv
Sonar: common questions
What microcontroller does the Sonar use?
The Sonar is built around the C701342, from the ESP32 family.
How big is the Sonar PCB?
The Sonar measures 74.9 × 47 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Sonar?
74 components, from 33 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 Sonar design files?
From the QuickRecon/sonar repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Sonar design in my own project?
Yes, under the terms of its MIT license, which QuickRecon chose for the repository.
Can I test firmware for the Sonar 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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