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PCA9685+L298

Hasatio·WaterQualityControl·prototype/PCA9685+L298/PCA9685+L298.kicad_pcb

PCA9685+L298 PCB layout, top view — open source ESP32 board by Hasatio
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About the PCA9685+L298 PCB

PCA9685+L298 is an open source ESP32 PCB design by Hasatio, published on GitHub. It is a 2-layer board measuring 120.4 × 81.1 mm, with 92 components from 24 distinct parts.

Its main chip is the QWIIC_RIGHT_ANGLE, from the ESP32 family. Other key parts include the PCA9685, L298HN, ADS1115IDGS and L7805. By type, the board carries 25 diodes, 16 jumpers, 10 connectors, 9 capacitors, 9 resistors and 8 ICs.

It belongs with the robotics & motion designs in this gallery.

From the project

The circuit taken as an example while designing the board Adafruit PCA9685

The circuit taken as an example while designing the board Adafruit PCA9685

- 1x TCA9406 (Voltage Level Translator) - 2x ADS1115 (Analog to Digital Converter) - 1x MCP23008 (I/O Expander) - 3x DRV8870 (Motor Driver) - 1x K7805-2000R3L or K7805-2000R3 for 5V supply - 2x QWIIC connector

Main components on the PCA9685+L298

PCA9685L298HNADS1115IDGSL7805

PCA9685+L298 bill of materials (BOM)

92 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
PCA9685
U1
3
L298HN
U2, U3, U4
3
ADS1115IDGS
U5, U6, U7
1
L7805
U8
1
AOD417
Q1
7
TERMBLOCK_1X2
J1, J4, J5, J7, J8, J10, J11
2
QWIIC_RIGHT_ANGLE
J2, J12
1
CONN_01X04
Conn_01x04
J13
6
~
JP1, JP2, JP5, JP6, JP15, JP16
2
PINHD-1X6CB
JP3, JP4
8
JUMPER-SMT_2_NC_TRACE_SILK
JP7, JP8, JP9, JP10, JP11, JP12, JP13, JP14
6
SOLDERJUMPERREFLOW_NOPASTE
SJ_A0, SJ_A1, SJ_A2, SJ_A3, SJ_A4, SJ_A5
6
TESTPOINTROUND1MM
TP1, TP2, TP3, TP4, TP5, TP6
1
GREEN
LED1
1
RED
LED2
25
M7
D1, D2, D3, D4, D5, D6, D7, D8 +17
3
10UF
10uF
C1, C6, C7
1
1000UF
1000uF
C2
5
1.0UF
1.0uF
C3, C4, C5, C8, C9
2
10K
R1, R2
Show 4 more
QtyPartRefs
1
10K
R3
1
1k
R4
1
470
R5
4
220
R11, R12, R13, R14

PCA9685+L298 design files

The KiCad project lives in the Hasatio/WaterQualityControl repository on GitHub; these links point at the commit this page was built from.

PCA9685+L298: common questions

What microcontroller does the PCA9685+L298 use?

The PCA9685+L298 is built around the QWIIC_RIGHT_ANGLE, from the ESP32 family.

How big is the PCA9685+L298 PCB?

The PCA9685+L298 measures 120.4 × 81.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PCA9685+L298?

92 components, from 24 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 PCA9685+L298 design files?

From the Hasatio/WaterQualityControl 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 PCA9685+L298 design in my own project?

The repository has no license, so all rights stay with Hasatio. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the PCA9685+L298 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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