HardLabs

Childradio

philippbrechel·childradio·Hardware/kinderradio/kinderradio/kinderradio.kicad_pcb

Childradio PCB layout, top view — open source ESP32 board by philippbrechel

About the Childradio PCB

Childradio is an open source ESP32 PCB design by philippbrechel, published on GitHub. It is a 2-layer board measuring 119 × 47.5 mm, with 108 components from 36 distinct parts.

Its main chip is the ESP32-WROVER-IE, from the ESP32 family. Other key parts include the TLV61070A, MAX983571, TLV62566, MCP7940N-xP and BMS_1S. By type, the board carries 42 capacitors, 32 resistors, 9 ICs, 8 connectors, 6 inductors and 5 transistors.

It belongs with the rf & radio and audio designs in this gallery.

From the project

A esp32 based web radio for small child

The mechanics are highly robust, making it the only web radio capable of withstanding the daily life of a 1-year-old child.

Please view this video for a demonstration Video

Childradio, from the project README
From the project README

Main components on the Childradio

TLV61070AESP32-WROVER-IEMAX983571TLV62566MCP7940N-xPBMS_1S

Childradio bill of materials (BOM)

108 components, 36 distinct parts.

QtyPartRefs
3
TLV61070A
U1, U2, U4
1
ESP32-WROVER-IE
U3
2
MAX983571
U12, U13
1
TLV62566
U20
1
MCP7940N-xP
U30
1
BMS_1S
U40
2
BSS84
Q1, Q80
3
BS170F
Q2, Q81, Q90
1
Crystal_GND3
Y1
2
Conn_01x04
J1, J2
1
Conn_01x02
J3
2
Conn_01x03_Male
J4, J5
1
USB_C_molex_217178-0001
J40
1
Conn_01x02_Female
J41
1
Conn_01x08
J55
1
RotaryEncoder_Switch
SW1
3
LED
D2, D3, D90
1
MBRA340
D40
2
FerriteBead
FB1, FB2
4
2.2uH
L1, L2, L3, L4
Show 16 more
QtyPartRefs
12
10uF
C0, C5, C8, C12, C15, C22, C27, C32 +4
13
100nF
C1, C6, C7, C10, C18, C19, C25, C33 +5
9
47uF
C2, C4, C9, C11, C14, C23, C26, C29 +1
4
1pF
C3, C13, C28, C39
2
12pF
C30, C31
1
470nF
C90
1
1uF
C91
4
470
R0, R7, R40, R41
5
180k
R1, R3, R4, R30, R31
4
20k
R2, R5, R6, R32
2
100k
R10, R12
1
0
R11
1
220k
R13
5
47k
R33, R80, R81, R82, R83
9
10k
R90, R91, R92, R93, R94, R95, R96, R97 +1
1
330
R98

Childradio design files

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

Childradio: common questions

What microcontroller does the Childradio use?

The Childradio is built around the ESP32-WROVER-IE, from the ESP32 family.

How big is the Childradio PCB?

The Childradio measures 119 × 47.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Childradio?

108 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the Childradio design files?

From the philippbrechel/childradio repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Childradio design in my own project?

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

Can I test firmware for the Childradio 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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