HardLabs

LED-Strip clock

atoomnetmarc·LED-Strip-clock·Kicad/LED Strip clock.kicad_pcb

LED-Strip clock PCB layout, top view — open source ESP8266 board by atoomnetmarc

About the LED-Strip clock PCB

LED-Strip clock is an open source ESP8266 PCB design by atoomnetmarc, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 142.2 × 116.8 mm, with 104 components from 21 distinct parts.

Its main chip is the WeMos_D1_mini, from the ESP8266 family. Other key parts include the TPIC6B595, MAX809S, 74HCT244, L7805 and MCP23008-xSO. By type, the board carries 55 resistors, 19 capacitors, 13 ICs, 8 connectors, 7 diodes and 1 battery holder.

From the project

Just a ESP8266 with some power shift registers to drive LED strips and make a clock.

Next step would be to test if the new schematic could work before ordering the first PCB.

I made a huge LED clock with pieces of LED strip in 2013 using an ATmega328 and DS3231 RTC. It has been running great and keeping time just fine. Lets break it by upgrading it.

This project will upgrade the ~~spagetti~~ old circuit to an internet connected LED strip clock neatly on a PCB. The brains will be a Wemos D1 mini and will use NTP to synchronize the time.

LED-Strip clock, from the project README
From the project README

Main components on the LED-Strip clock

TPIC6B595MAX809S74HCT244L7805WeMos_D1_miniMCP23008-xSOINA219AxDDS3231MZ

LED-Strip clock bill of materials (BOM)

104 components, 21 distinct parts.

QtyPartRefs
6
TPIC6B595
U1, U2, U3, U4, U5, U6
1
MAX809S
U7
1
74HCT244
U8
1
L7805
U9
1
WeMos_D1_mini
U10
1
MCP23008-xSO
U11
1
INA219AxD
U12
1
DS3231MZ
U13
6
Conn_01x09_Male
J1, J2, J3, J4, J5, J6
1
Barrel_Jack_Switch
J7
1
Conn_01x18_Male
J8
1
CR2032
BT1
1
Polyfuse 1.5A/16v
F1
6
5611BH
D1, D2, D3, D4, D5, D6
1
1N5819
D7
11
10uF
C1, C2, C3, C4, C5, C6, C7, C8 +3
4
100uF/16v
C20, C21, C22, C23
4
2200uF/16v
C30, C31, C32, C33
1
0R1
R1
3
100R
R10, R11, R12
Show 1 more
QtyPartRefs
51
4K7
R30, R31, R32, R33, R34, R35, R36, R37 +43

LED-Strip clock design files

The KiCad project lives in the atoomnetmarc/LED-Strip-clock repository on GitHub; these links point at the commit this page was built from.

LED-Strip clock: common questions

What microcontroller does the LED-Strip clock use?

The LED-Strip clock is built around the WeMos_D1_mini, from the ESP8266 family.

How big is the LED-Strip clock PCB?

The LED-Strip clock measures 142.2 × 116.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LED-Strip clock?

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

Where can I download the LED-Strip clock design files?

From the atoomnetmarc/LED-Strip-clock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the LED-Strip clock design in my own project?

Yes, under the terms of its Apache-2.0 license, which atoomnetmarc chose for the repository.

Can I test firmware for the LED-Strip clock 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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