ToBe | WiSer (Climate edition)

Hardware

ToBe WiSer v1.0 is produced by OSH Park.

Process | 2-layer prototype PCB service

FR4 substrate
1 oz copper
1.6mm thickness
ENIG (Immersion Gold) finish

Dimensions | 1.4 x 0.85 inches (35.6 x 21.6 mm)
Price (typ.) | 1.75€ per PCB ($6.00 for a set of 3 boards)

Resources

Schematics | pdf
KiCad project files | zip
Bill of Material | html
Manufacturing files (OSH Park)

PCB Layout | pdf
Gerbers | zip

Power consumption

ESP-12E Pinout

Pin	Name	Function	Comment
1	RST	In, PU	Chip reset, short J2 to keep module active or connect to external device

Revisions

Rev.	Released	E.D.A.	Description	PCB Fab.	Prod. date	Qty	Notes
v1.0	2019-02-17	KiCad 5.0.2	Initial version	OSH Park	2019-02-20	3x

Errata

Index	Rev.	Location	Description	Fix
1	v1.0	PIR connector	GPIO2 needs to be high for normal boot	Swap with SDA

Software

ESP8266 Firmware

ESP8266 firmware sources (NON-OS SDK):

Source package | tgz

cd src; make EDITION=climate

SVN repository | svn

svn co --username bertrand https://svn.tognoli.fr/wise/trunk src

Binary firmware | tgz

esptool.py -p /dev/ttyAMA0 -b 115200 write_flash 0 WiSe-0x00000.bin 0x10000 WiSe-0x10000.bin

Data logger

Sensor
Temperature	trigger sensor ~100ms before, logs avg(BMP280, DHT22)
Pressure	trigger sensor ~100ms before, logs BMP280
Humidity	trigger sensor ~100ms before, logs DHT22 or BME280
Presence	logs min/hour
Light	logs filtered peak luminosity (% of full daylight), daylight (min/hour)

Note:

Luminosity is sensed once every minute.
Driver reports filtered max, daylight_min/hour and instant value

Pictures

Board

Board (top view)

Board (bottom view)

PCB (top view)

PCB (bottom view)

PCB (Fab, top view)

PCB (Fab, bottom view)