HardLabs

Minitoy

al177·minitoy

Minitoy PCB layout, top view — open source ESP8266 board by al177

About the Minitoy PCB

Minitoy is an open source ESP8266 PCB design by al177, published on GitHub. It is a 2-layer board measuring 44 × 40 mm, with 38 components from 17 distinct parts.

Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the ICE40UP5K-SG48, MIC5504-3.3YM5 and MIC5504-1.2YM5. By type, the board carries 21 capacitors, 6 resistors, 5 ICs, 4 connectors and 2 diodes.

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

From the project

Dead-end personal project for a WiFi enabled FPGA board using the Lattice ICE40UP5K FPGA.

Dead-end personal project for a WiFi enabled FPGA board using the Lattice ICE40UP5K FPGA.

- Minimal-ish part count due to using the ESP8266 to configure the FPGA during power-up - Intended to run Micropython - Fast SPI channel between ICE40 and ES8266 can be used as a communications channel after boot

This project has been built as of the 0.1 revision of the PCB. There are numerous workarounds needed to get it running that are rolled up into the v0.2 PCB committed here, though v0.2 has not been manufactured.

Main components on the Minitoy

ICE40UP5K-SG48ESP-12EMIC5504-3.3YM5MIC5504-1.2YM5

Minitoy bill of materials (BOM)

38 components, 17 distinct parts.

QtyPartRefs
1
ICE40UP5K-SG48
U1
1
ESP-12E
U2
2
MIC5504-3.3YM5
U3, U5
1
MIC5504-1.2YM5
U4
1
Conn_01x06
J1
1
PMOD1
J2
1
USB_B_Micro
J4
1
PMOD2
J5
1
LED_ARGB
D1
1
D_Schottky
D10
7
0.1uF
C1, C3, C5, C11, C13, C14, C25
2
1uF
C2, C6
3
0.01uF
C4, C10, C12
6
1.0uF
C16, C17, C19, C20, C22, C23
3
47uF
C18, C21, C24
5
10k
R1, R9, R10, R19, R20
1
100
R14

Minitoy design files

The KiCad project lives in the al177/minitoy repository on GitHub; these links point at the commit this page was built from.

Minitoy: common questions

What microcontroller does the Minitoy use?

The Minitoy is built around the ESP-12E, from the ESP8266 family.

How big is the Minitoy PCB?

The Minitoy measures 44 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Minitoy?

38 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Minitoy design files?

From the al177/minitoy repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Minitoy design in my own project?

The repository has no license, so all rights stay with al177. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Minitoy without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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