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Divtiesus acer

arleybls·divtiesus-acer

Divtiesus acer PCB layout, top view — open source ESP8266 board by arleybls
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About the Divtiesus acer PCB

Divtiesus acer is an open source ESP8266 PCB design by arleybls, published on GitHub. It is a 2-layer board measuring 76.6 × 57.4 mm, with 40 components from 21 distinct parts.

Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the EPM240T100, 628128, 28C64, LM1117MP-3.3 and 74HCT165D. By type, the board carries 15 capacitors, 11 resistors, 6 ICs, 2 connectors, 2 switches and 1 crystal.

It belongs with the test & measurement, retro computing and iot & wireless designs in this gallery.

From the project

Custom 2-layer PCB re-layout of DivTIESUS — a DivMMC SD card interface for the ZX Spectrum, with the upstream CPLD firmware unchanged.

A custom-PCB fork of DivTIESUS — a DivMMC-compatible SD/MMC card interface for the ZX Spectrum.

This fork is a board re-layout only: the CPLD firmware and its pinout are unchanged from upstream, so the existing logic runs on the new PCB without modification.

The entire cpld/ directory matches the maple edition:

- Same Verilog sources: tlddivtiesus.v, divmmcmcleod.v, modo.v, segajoy.v, trese.v, uart.v, zxunoregs.v, zxunouart.v - Same config.vh and Makefile - Same tlddivtiesus.qsf pin map — target device Altera MAX II EPM240T100C5`**

Divtiesus acer, from the project README
From the project README

Main components on the Divtiesus acer

EPM240T10062812828C64ESP-12ELM1117MP-3.374HCT165D

Divtiesus acer bill of materials (BOM)

40 components, 21 distinct parts.

QtyPartRefs
1
EPM240T100
U1
1
628128
U2
1
28C64
U3
1
ESP-12E
U4
1
LM1117MP-3.3
U5
1
74HCT165D
U6
1
24MHz
X1
1
JTAG
J1
1
SD_Card
J3
1
SWITCH_SMD_6PIN
JUMPER_E2
1
RESET
SW1
1
NMI
SW2
1
ZXBUS
Z1
1
SD Act
D1
12
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +4
3
10uF
C9, C10, C14
3
10K
R1, R4, R6
1
22K
R5
2
1K
R8, R10
2
510
R9, R11
Show 1 more
QtyPartRefs
3
10K
RN1, RN2, RN3

Divtiesus acer design files

The KiCad project lives in the arleybls/divtiesus-acer repository on GitHub; these links point at the commit this page was built from.

Divtiesus acer: common questions

What microcontroller does the Divtiesus acer use?

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

How big is the Divtiesus acer PCB?

The Divtiesus acer measures 76.6 × 57.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Divtiesus acer?

40 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Divtiesus acer design files?

From the arleybls/divtiesus-acer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Divtiesus acer design in my own project?

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

Can I test firmware for the Divtiesus acer 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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