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

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

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 # 946-MEZD41502A-A $15

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

  • TRACO POWER TSR 1-2450

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

Pressure (Altitude) Sensor

Measurement

Voltage

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

Current

  • Mouser # 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

-- Peter Schmid - 2022-01-21

Comments

Edit | Attach | Watch | Print version | History: r4 < r3 < r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r4 - 2022-01-24 - PeterSchmid
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2022 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback