HubDynamoCharger < Velo

---+ Hub Dynamo Charger

   * Charger
      * 4 Ah
      * max. 2 A
      * Charging time about 12 h
   * BLE Cycle Sensor
   * Cyclocomputer
      * OLED Display 64x128
      * Current speed
      * Maximum speed
      * Average speed
      * Trip distance
      * Total distance
      * Altitude
      * Trip elevation gain
      * Total elevation gain
      * Maximum altitude
      * Incline
      * Temperature
      * Trip time
      * Time
      * Stopwatch 


---++ STM32WB Feather Development Board

MecrispCube.BoardSupportPackageWBfeather


---++ Feather OLED 64x128 Display


---++ Battery

---+++ Li-Ion Battery Pack HY-LINE H2B179.1

https://www.distrelec.ch/Web/Downloads/_t/ds/HY%20Line-H2B179.1_eng_tds.pdf, CHF62

   * 1S2P-Configuration
   * Vnom 3.6 V, 6666 mAh
   * Integrated protection circuit
   * Premium quality Sanyo cell !NCR18650B
   * Shrink foil
   * No memory effect
   * 100 g, 66 x 40 x 19 mm

Safety protection board

| Cut off voltage            | 4.28 +/- 0.025 V   |
| Over charge release        | 4.08 +/- 0.025 V   |
| End of discharge voltage   | 2.8 +/- 0.050 V    |
| Over discharge release     | 2.8 +/- 0.050 V    |
| Over current detection     | 4.05 +/- 0.085 A   |
| Over discharge delay time  | 144 +/- 29 ms      |

https://www.mouser.com/ProductDetail/Ultralife/UBBL23-FL, 4.8 Ah, $85

---+++ 18650 Single cell 

   * [[https://www.mouser.com/ProductDetail/TinyCircuits/ASR00050][406-ASR00050]], 3.7 V 2.5 Ah, $5
   * https://www.distrelec.ch/de/akku-li-ion-6v-5ah-ansmann-1307-0001/p/30152666, 3.7 V 3.5 Ah, CHF25

---++ DC-DC Converter 3.7 V (Battery) to 5.0 V (USB Out)

   * !mEZD41502A-A
      * 2.7 V - 4.2 V Input, 2 A, 5V  Output, Step-Up Power Supply 
      * Mouser # [[https://www.mouser.com/ProductDetail/Monolithic-Power-Systems-MPS/mEZD41502A-A][946-MEZD41502A-A]] $15


---++ DC-DC Converter 7 V (Rectified Dynamo Voltage) to 5 V (Charger, Feather Board)

   * TRACO POWER TSR 1-2450
      * 6.5 - 35 V Input, 5 V / 1 A Output
      * Mouser # [[https://www.mouser.com/ProductDetail/TRACO-Power/TSR-1-2450][495-TSR-1-2450]] $6

   * DF005S - DF10S Bridge Rectifier 1.5 A
   * 470 uF / 35 V
   * Transient voltage suppressor 24 V, peak pulse 600 W, SMBJ24A



---++ Pressure (Altitude) Sensor

   * 1 meter accuracy 
   * Mouser # [[https://www.mouser.com/ProductDetail/Adafruit/4494][485-4494]]
   * [[https://www.mouser.com/datasheet/2/737/Adafruit_05142020_4494-1858450.pdf][datasheet]] $7


---++ Measurement

---+++ Voltage

   * Dynamo voltage: 4 to 25 V
   * Battery voltage: 2.5 to 4.2 V

---+++ Current

   * Mouser # [[https://www.mouser.ch/ProductDetail/Texas-Instruments/INA180A3IDBVT][INA180A3]], gain 100
   * USB out current: Shunt 10 mOhm -> 2 A -> 2 V
   * Battery charge current: Shunt 50 mOhm -> 0.5 A -> 2.5 V


-- %USERSIG{PeterSchmid - 2022-01-21}%

---++ Comments

%COMMENT%
This topic: Velo > WebHome > HubDynamoCharger
Topic revision: r4 - 2022-01-24 - PeterSchmid