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KbxIRBlaster

kbx81·kbxIRBlaster·v2/kbxIrBlaster.kicad_pcb

KbxIRBlaster PCB layout, top view — open source ESP32 board by kbx81
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About the KbxIRBlaster PCB

KbxIRBlaster is an open source ESP32 PCB design by kbx81, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 69.9 × 66.5 mm, with 86 components from 43 distinct parts.

Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the AP2112K-3.3, FT232RL and TSOP382XX. By type, the board carries 30 diodes, 25 resistors, 9 capacitors, 8 connectors, 7 transistors and 5 ICs.

It belongs with the iot & wireless designs in this gallery.

From the project

ESP32-based IR MegaBlaster!

Just another ESP32-based IR Blaster. It was designed with ESPHome in mind but should work fine with Tasmota or any other app, really.

I've created four versions: - v4 - Based on ESP32-C6 - Nearly identical to v3 (below) but with minor adjustments/enhancements - v3 - Based on ESP32-C3 - Disc (smaller) - One header for (an) off-board emitter(s) - Pads for 24 IR LEDs: - Eight top-emitting surface mount - Eight side-emitting surface mount around the edges of the disc - Eight 5 mm LEDs for extra "throw" - v2 - Based on ESP32 - Disc - One header for (an) off-board emitter(s) - Pads for 16 IR LEDs…

KbxIRBlaster, from the project README
From the project README

Main components on the KbxIRBlaster

ESP32-WROOM-32DAP2112K-3.3FT232RLTSOP382XX

KbxIRBlaster bill of materials (BOM)

86 components, 43 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32D
U1
1
AP2112K-3.3
U2
1
FT232RL
U3
2
TSOP382XX
TSOP382xx
U4, U5
5
2N7002
Q1, Q2, Q3, Q4, Q7
2
MMSS8050
Q5, Q6
1
POWER
J1
1
N/A
J2
1
5 TO 6 VDC
J3
1
SERIAL
J4
1
EXT_IR
J5
2
IO
J6, J7
1
RF/PIR
J8
1
RESET
SW1
1
IO0
SW2
1
5V
D1
1
3V3
D2
1
STATUS
D3
1
USER
D4
3
CH1
D5, D9, D17
Show 23 more
QtyPartRefs
3
CH1
CH2
D6, D11, D19
3
CH1
CH3
D7, D13, D21
3
CH1
CH4
D8, D15, D23
2
CH1
D10, D18
2
CH1
CH2
D12, D20
2
CH1
CH3
D14, D22
2
CH1
CH4
D16, D24
3
MBR120
D25, D26, D28
1
TX
D27
1
CH1
RX
D29
1
VBUS
D30
1
1 uF
C1
4
10 uF
C2, C3, C4, C9
1
4.7 uF
C5
3
100 nF
C6, C7, C8
1
8K2
R1
1
1K6
R2
1
120
R3
2
1K2
R4, R20
5
1K2
2K7
R5, R6, R7, R8, R22
8
100
R9, R10, R11, R12, R13, R14, R15, R16
6
10K
R17, R18, R21, R23, R24, R25
1
4K7
R19

KbxIRBlaster design files

The KiCad project lives in the kbx81/kbxIRBlaster repository on GitHub; these links point at the commit this page was built from.

KbxIRBlaster: common questions

What microcontroller does the KbxIRBlaster use?

The KbxIRBlaster is built around the ESP32-WROOM-32D, from the ESP32 family.

How big is the KbxIRBlaster PCB?

The KbxIRBlaster measures 69.9 × 66.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KbxIRBlaster?

86 components, from 43 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 KbxIRBlaster design files?

From the kbx81/kbxIRBlaster repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the KbxIRBlaster design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which kbx81 chose for the repository.

Can I test firmware for the KbxIRBlaster 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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