OpenShelter Signal

This repository is for organization and work on the OpenShelter Signal hardware device! For more information on what this is, checkout https://chalmerscards.com/chalmerssignal

Quick Start

Setting up a development environment for this firmware is easiest with Platform IO.

Hardware Used in this project

Part Type	Model Number	Seller	Link	Picture
TFT Display	1.44 Inch TFT LCD 65K Color 128x128 Display Screen SPI Serial Port Module ST7735 for 51 ARM Arduino	DIY More Alice1101983 Store (AliExpress)	https://www.aliexpress.com/item/33014277663.html?spm=a2g0s.12269583.0.0.5f7713304vjAGt
ESP8266 Microcontroller development board	diymore ESP8266 ESP-12E ESP-12F CH340 CH340G for Arduino WeMos D1 Mini WIFI Wireless Development Module D1 Mini NodeMCU IOT	DIY More Alice1101983 Store (AliExpress)	https://www.aliexpress.com/item/32975485449.html?spm=a2g0s.9042311.0.0.5fda4c4dbZOZGj
WS2812 RGB Individually Addressable LED Ring	diymore WS2812 5050 RGB LED Ring Lamp Light 7 Bits LEDs with Integrated Driver for Arduino	DIY More Alice1101983 Store (AliExpress)	https://www.aliexpress.com/item/32668340327.html?spm=a2g0s.9042311.0.0.5fda4c4dbZOZGj
Rotary Encoder	Rotary Encoder Module 5V Brick Sensor Development Round Audio Rotating Potentiometer Knob Cap for Arduino	DIY More Alice1101983 Store (AliExpress)	https://www.aliexpress.com/item/32908505224.html?spm=a2g0s.9042311.0.0.5fda4c4dbZOZGj

Pin Bindings

TFT Display

D1 Mini	Shield	Other Shield
RST	TFT_RST	RES
D0 [GPIO16]	TFT_DC	DC (or A0 or RS)
D4	TFT_CS
D7	MOSI	SDA
D5	SCK	SCL
Unused	---	BL
3v	TFT_LED	VCC
GND	GND	GND

Rotary Encoder

Encoder Pin	Wemos Pin [GPIO number]	Purpose
S1	D1 [GPIO5]	input clock
S2	D2 [GPIO4]	Input DT
Key (button)	D3 [GPIO0]	Click-In Button
VCC	3v	power (derr)
GND	GND	ground (derr)

LED Ring

Wemos D1 Mini Pin	digital RGB LED Pin
GPIO15 / D8	DIN
3v	VCC
GND	GND