2 layers
2 layers160 × 32 mm
MatrixClock
middelink/MatrixClock2MatrixClock - source code, schematics and pcb layout
- Size
- 160 × 32 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 26
- Pads
- 252
- Tracks, vias
- 415, 13
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 22 Nov 2017
- Updated
- 3 Jan 2021
Overview
MatrixClock is an open-source printed circuit board by middelink, from the middelink/MatrixClock repository on GitHub, published under the MIT licence. It is a 2-layer board of 160 × 32 mm with 70 parts on 26 nets, routed with 415 tracks and 13 vias.
It is built around the ESP-12E, BH1750FVI-TR and BME280, with the BME680, APDS-9301-020 and LD1117S33TR(MS) among its other parts. Its parts include 11 resistors, 10 capacitors, 6 ICs, 5 connectors and 1 diode. It belongs with the ESP8266 boards of this library.
Main components
6
ESP-12E
SMD,24x16mm-20℃~+70℃ -90dBm 16dBm 170mA 2.4GHz 3V~3.6V 56mA 802.11b/g/n ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART、SPI、I2C SMD,24x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
BH1750FVI-TR
WSOF-6-40℃~+85℃ 2.4V~3.6V 65.535klx I2C Light Intensity WSOF-6 Ambient Light Sensors ROHSROHM SemiconductorAmbient Light Sensors
BME280
LGA-8(2.5x2.5)-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 1.8uA 16bit I2C、SPI ±0.5℃ ±3%RH LGA-8(2.5x2.5) Temperature and Humidity Sensor ROHSBoschTemperature And Humidity Sensor
BME680
LGA-8-40℃~+85℃ 0.12hpa 0.6hpa 1.3pa/K 1.71V~3.6V 150nA 30Kpa~1.1bar I2C、SPI Temperature Sensor LGA-8 Pressure Sensors ROHSBosch SensortecPressure Sensors
APDS-9301-020
SMD- LCDH ROHSBroadcom LimitedUncategorised
LD1117S33TR(MS)
SOT-223-20℃~+125℃@(Ta) 1 1.4V@(1A) 12V 1A 2mA 3.3V Fixed Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdMatrixClock
TL;DR
MatrixClock is both a hardware and software project to create an extensible 40x8 dot matrix display with some sensors attached because, uhm. I could?
Here you will find the both the schematics, pcb layout and source code of my MatrixClock project.
Features
- Based on generaly available red 8x8 dot matrix displays with MAX7219. E.g. on eBay (the red one, with the yellow headers).
- Full source code (arduino, platformio)
- Full schematics, PCB layout and gerbers (kicad)
- ESP-12E/F module for driving display and ntp time keeping.
- USB powered
- User defined button
- Light sensor: APDS9301 and/or BH1750FVI
- Environment sensor: BME280 or BME680
- Extensible, units can be cascaded (only one should have active components though)
Libraries
- Adafruit's BME680 library has the nasty habbit of initializing the Wire library instead of leaving that to the calling program. This means they override our carefully set non-standard I2C pins. Needs to be commented out around line 104 in Adafruit_BME680.cpp.
- Same library, Adafruit_BME680.h, you want to comment out the include of Adafruit_sensor.h. Not there, not used, not needed.
Installation
The source is written on a Linux box and compiled/uploaded via the excellent PlatformIO toolkit. The schematics and pcb layout is created in KiCad.
I will not bother to tell you how to compile/upload the code, modify the schema, change the layout, create gerbers and wait patiently for the PCBs to arrive before starting your SMD soldering adventure. Simply because you should not do this if you not exhaustively researched all of the just mentioned area's.
Good luck! Pauline
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | VIA-6mm | Private:VIA-6mm | VIA01, VIA02, VIA03, VIA04, VIA05, VIA06, VIA07, VIA07, VIA08, VIA09, VIA10, VIA11, VIA12, VIA13, VIA14, VIA15 +14 |
| 8 | 100nF | Capacitors_SMD:C_0805 | C1, C2, C3, C4, C5, C8, C9, C10 |
| 7 | 10K | Resistors_SMD:R_0805_HandSoldering | R3, R4, R5, R6, R7, R8, R9 |
| 5 | Module_MAX7219 | Private:Module_MAX7219 | M1, M2, M3, M4, M5 |
| 2 | 100K | Resistors_SMD:R_0805_HandSoldering | R1, R2 |
| 2 | CONN_01X05 | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J3, J4 |
| 1 | 100uF | Capacitors_SMD:CP_Elec_6.3x5.7 | C7 |
| 1 | 10uF | Capacitors_SMD:CP_Elec_3x5.3 | C6 |
| 1 | 1K | Resistors_SMD:R_0805_HandSoldering | R11 |
| 1 | 1N4148 | Diodes_SMD:D_SOD-123 | D1 |
| 1 | 4K7 | Resistors_SMD:R_0805_HandSoldering | R10 |
| 1 | APDS-9301 | Private:APDS9301 | U4 |
| 1 | BH1750FVI-TR | Private:WSOF6 | U3 |
| 1 | BME280 | Private:BME280 | U5 |
| 1 | BME680 | Private:BME680 | U6 |
| 1 | CONN_01X06 | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | J2 |
| 1 | DISP_PWR | Private:SOLDER-JUMPER_2-WAY | J5 |
| 1 | ESP-12E | ESP8266:ESP-12E_SMD | U2 |
| 1 | LD1117S33TR | TO_SOT_Packages_SMD:SOT-223-3Lead_TabPin2 | U1 |
| 1 | PNP | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | SW_Push | Buttons_Switches_SMD:SW_SPST_PTS645 | SW1 |
| 1 | USB_OTG | Private:USB_Micro-B_Vertical_Molex-105133-0001 | J1 |
Questions
How big is the MatrixClock PCB?
It measures 160 × 32 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MatrixClock use?
70 parts, built around the ESP-12E, BH1750FVI-TR, BME280 and BME680. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the MatrixClock KiCad files?
From the middelink/MatrixClock repository on GitHub, at the commit this page was made from: the board is KiCad/MatrixClock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MatrixClock design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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