2 layers44.3 × 46.3 mm
Catear pcb
TobleMiner/catear-pcb
This repo contains the PCB for the Nekomimi project of @BenBE . It will be used to illuminate 3D printed catears.
121 parts1
2 layers34 × 27.4 mm
Prototype
mdh1418/LabMonitorUROPUROP with Prof. Joe Steinmeyer to bring out a low cost and small footprint system to monitor environmental data within a laboratory setting.
- Size
- 34 × 27.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 39
- Pads
- 75
- Tracks, vias
- 147, 22
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 16 Mar 2018
- Updated
- 8 Nov 2021
Overview
Prototype is an open-source printed circuit board by mdh1418, from the mdh1418/LabMonitorUROP repository on GitHub. It is a 2-layer board of 34 × 27.4 mm with 13 parts on 39 nets, routed with 147 tracks and 22 vias.
It is built around the ESP32-WROOM-32 and BME680. Its parts include 6 resistors, 3 capacitors, 2 ICs and 1 diode. It belongs with the ESP32 boards of this library.
Main components
2
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
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
README
README.mdLabMonitor
UROP with Prof. Joe Steinmeyer to bring out a low cost and small footprint system to monitor environmental data within a laboratory setting.
Getting Started
For this project, we are using the ESP32 (https://www.espressif.com/en/products/hardware/esp32/overview), the BME680 environmental sensor (https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf), as well as a customized PCB for a minimal barebones setup. The ESP32 and BME680 are interfaced using I2C.
Setup (WITHOUT PCB)
Materials
- ESP32-DevKitC (https://www.espressif.com/en/products/hardware/esp32-devkitc/overview)
- Adafruit BME680 (https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas)
- Jumper cables
- USB to MicroUSB cable
- Breadboard
After installing the software listed below in the Software section to program the ESP32-DevKitC with Arduino, simply follow the hookup guide outlined in the Adafruit tutorial linked above in the materials list.
Materials
- ESP-Wroom-32 (https://www.espressif.com/en/products/hardware/esp-wroom-32/overview)
- BME680 (https://www.bosch-sensortec.com/bst/products/all_products/bme680)
- Sparkfun FTDI (https://www.sparkfun.com/products/9716)
- Customized PCB
- 2 Buttons (Reset and Prgm)
- Wires
- Breadboard
After installing the software listed below in the Software section to program the ESP-Wroom-32, (
Notes
- Use 3.3V on the FTDI so cut the 5V connection and solder the 3.3V connection
- To program the ESP-Wroom-32, press Reset, press Prgm, release Reset, and release Prgm and upload the sketch
- When using wifi, the FTDI driver cannot supply enough current, so power using batteries or a lab supply
Software
Programming the ESP32 with Arduino https://github.com/espressif/arduino-esp32
BME680 Driver https://github.com/BoschSensortec/BME680_driver
KiCad (If customizing PCB) http://kicad-pcb.org/
References
http://esp32.net/ https://www.espressif.com/sites/default/files/documentation/esp32_hardware_design_guidelines_en.pdf https://www.espressif.com/sites/default/files/documentation/esp-wroom-32_datasheet_en.pdf https://3.bp.blogspot.com/-zyGHuqISKPs/WMx4MWPAZOI/AAAAAAAAAMw/xxDcpwVSq0garkCG5n8yQfn4X7r94zMHACLcB/s1600/ESP%2B32%2BSchematic.PNG https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf https://learn.adafruit.com/adafruit-bme680-humidity-temperature-barometic-pressure-voc-gas/arduino-wiring-test https://www.14core.com/wiring-and-flashing-programming-esp-32-esp32s-with-usb-ttl-uart/ https://github.com/sparkfun/SparkFun-KiCad-Libraries https://www.wayneandlayne.com/blog/2013/02/27/kicad-tutorial-gerber-file-generation/ https://techtutorialsx.com/2017/04/24/esp32-publishing-messages-to-mqtt-topic/
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10K | Resistors_SMD:R_0805 | R4, R5, R6 |
| 2 | 5K(1%)(NC) | Resistors_SMD:R_0805 | R2, R3 |
| 1 | 100uF/6.3V(20%) | Capacitors_SMD:C_0805 | C1 |
| 1 | 12K(1%) | Resistors_SMD:R_0805 | R1 |
| 1 | 1N4148 | Diodes_SMD:D_0805 | D1 |
| 1 | 1nF/50V(10%) | Capacitors_SMD:C_0805 | C2 |
| 1 | 1uF/10V(10%) | Capacitors_SMD:C_0805 | C3 |
| 1 | BME680 | BME680:BME680 | U2 |
| 1 | Conn_01x08 | Socket_Strips:Socket_Strip_Straight_1x08_Pitch2.54mm | G 3V EN 16 TX RX D0 G |
| 1 | ESP32-WROOM | ESP32-footprints-Lib:ESP32-WROOM | U1 |
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Questions
How big is the Prototype PCB?
It measures 34 × 27.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Prototype use?
13 parts, built around the ESP32-WROOM-32 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 Prototype KiCad files?
From the mdh1418/LabMonitorUROP repository on GitHub, at the commit this page was made from: the board is LabMonitor/LabMonitor/Kicad/Prototype/Prototype.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Prototype design in my own project?
Its repository states no licence, so its author keeps all rights: ask mdh1418 before reusing the design.