Handlebar Controller (URS / Requirements)

URS

The Handlebar Controller device’s User Requirement Specifications:

• URS-1: The system shall allow to control GPS application installed on smartphone or tablet
• URS-2: GPS applications shall be at least: OSMand, Guru Map
• URS-3: The system shall be available for iOS and Android
• URS-4: The system shall be Connected with Bluetooth, emulating HID device (keyboard)
• URS-5: The system shall be used on motorbike and shall be waterproof
• URS-6: The system shall be used on motorbike and easily usable while riding
• URS-7: The system shall be powered with motorbike or charge with USB source before being used
• URS-8: The system shall be usable when motorbike is off
• URS-9: The system shall receive input commands by one of the following external devices:
  • 3 handle bar buttons device (Up/Down/Select)
  • 1 rotary encoder with integrated push button device (Clockwise/AntiClockwise/Select)
  • the existing motorbike control buttons (Up/Down/Select)
• URS-10: Basically input device shall control Zoom /de-zoom for GPS Application, but can be affected to other configurable functionality
• URS-11: Profile shall be used to associated configurable functionalities (for instance ZoomIn/ZoomOut for Android OsMand)
• URS-12: Switch between different profiles shall be executed with the Select button
• URS-13: The select button shall be configurable to execute 2 actions, one with short push and one with long push. One of them shall be the profile switch.
• URS-14: Switch between profile can be displayed with led or OLED display

Hardware requirements

1. Lolin 32 Pro https://www.wemos.cc/en/latest/d32/d32_pro.html
2. OLED Shield https://www.wemos.cc/en/latest/d1_mini_shield/oled_0_96.html
3. I2C Cable https://www.aliexpress.com/item/32867490848.html?spm=a2g0s.9042311.0.0.27424c4dAEbyt2
4. LiPo Battery 3.7V 650mAh with JST PH 2.0mm 2 pin https://www.aliexpress.com/item/32833075472.html?spm=a2g0o.cart.0.0.14953c00Quf36h&mp=1
5. MicroSD card
6. Rotary encoder 
7. Solid Aluminum Knob Potentiometer https://www.aliexpress.com/item/32753503255.html?spm=a2g0s.9042311.0.0.27424c4dzs5tzC
8. Universal Light Switch Motorcycle Handlebar https://www.aliexpress.com/item/1005001568694609.html?spm=a2g0s.9042311.0.0.65864c4dB1KehRABS
9. Plastic Project Box Waterproof https://www.aliexpress.com/item/4000401721859.html?spm=a2g0s.9042311.0.0.27424c4dzs5tzC
10. Resistors 2 x 10K
11. Cable 5 wires https://www.aliexpress.com/item/4000570401041.html?spm=a2g0o.productlist.0.0.3b6e2a53CKvL9d&algo_pvid=cbbb324e-29d6-4621-a31e-63c46d31d43c&algo_expid=cbbb324e-29d6-4621-a31e-63c46d31d43c-5&btsid=2100bb4916085039192433619e27a9&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

Cost

ID	Component	Approximative Price (Euro)
1	Lolin 32 Pro	9
2	OLED Shield	2,5
3	I2C Cable	0,5
4	LiPo Battery 3.7V	4
5	MicroSD card 4Go	2
6	Rotary encoder	0,5
7	Solid Aluminum Knob Potentiometer	3,5
8	Universal Light Switch Motorcycle Handlebar	4
9	Plastic Project Box Waterproof	2,5
10	Resistor	1
11	Cable 5 wires	3
	Total	29

Software Requirements

Below the list of software applications and libraries requirements.

1. Arduino IDE https://www.arduino.cc/en/software
2. Expressif ESP32 library https://github.com/espressif/arduino-esp32
3. ESP32 BLE Keyboard https://github.com/T-vK/ESP32-BLE-Keyboard
4. ESP8266 OLED Driver SSD1306 https://github.com/ThingPulse/esp8266-oled-ssd1306
5. AFArray library https://github.com/TechLabCommunity/AFArray
6. IniFile library https://github.com/stevemarple/IniFile
7. SimpleRotary Arduino library https://github.com/mprograms/SimpleRotary

Schematic diagram

LOLIN32 pins

Rotary encoder pins

LOLIN32 pin	Rotary Encoder pin
3.3V	10K resistor to DT 10K resistor to CLK
GND	GND / GND
15	DT
2	CLK
0	SW