Expansion board for the WT32-SC01 Dev Kit
Sommaire
this board is ready to be connected to one of the 2 expansions connector of the WT32-SC01 from Wireless-Tag (c) http://www.wireless-tag.com/portfolio/wt32-sc01/
It includes the following features:
- LiPo – LiIon battery charger with overcharge and overdischarge protection
- 2 push buttons
- DS3131M + backup battery RTC clock
- Micro SD connector
- MCP4725 DAC + Speaker amplifier
- I2C, IO, Control, Power connectors
- Battery Voltage Senror
The PCB dimension fits to the WT32-SC01’s.
Demo Source Code
https://github.com/bsfconception/WT32-SC01
The demo source code tests all the expansion board feature. The testing code is provided « as is » and includes :
- DAC setup and test
- Basic GUI with buttons and actions control
- I2C scanner
- JPEG decoder and display
- SD Card files acces control
- SPIFF files acces control
- RTC maangement
- Web Server with WiFi settings and control
- …
Note : check the code to mofidy and adjust for your testing. The « Display Picture » feature loads by defaut « logo.jpg » from the SD Card
Power Consumption
The Powwer consumption of the entire system (WT32 + Expansion board) have been performed using the Li-Ion battery:
- Wifi Connection and registration : 700mA
- Normal running : 460 mA
- Light Sleep Mode : 80 mA
These measurements are performed using the provided test code.
Important Notice : Power OFF the on board power supply during the programming
You want a PCB ?
the PCB can be purchased here https://www.etsy.com/fr/listing/1239499505/wt32-sc01-expansion-board-pcb-only
https://www.tindie.com/products/blacksfactory/wt32-sc01-expansion-board-pcb-only/