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BLF driver 2.1m-K2 [rev00][tried and tested]

author: DEL
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2 layer board of 1.34 x 1.34 inches (34.0 x 34.0 mm)
Uploaded: June 02, 2017
Shared: June 17, 2017
Total Price: $8.95

5+1 7135 driver for Solarstorm/Fandyfire K2 lights.

Revision changes

  • New

Needs the DDm-K2-SW daughter board for the tactile switch and indicator LEDs:

https://oshpark.com/shared_projects/0o6V4Iia

‘Standard’ BLF parts list, except for:

  • R1 and R2 are populated if MCU pin 7 is used for cell voltage monitoring. This could, however, be done using the software-only method of Vcc vs. the internal 1.1 V reference.
  • R7 is populated when re-purposing pin 7 to drive a second indicator LED, as per the stock driver.
  • There is an R1 on the back of the switch board. A jumper here rewires the two indicator LEDs in parallel, both to be driven from MCU pin 3.
  • C3 = 10 uF is optional
  • C4 = 100 nF is optional

5+1 7135 driver for Solarstorm/Fandyfire K2 lights.

Revision changes

  • New

Needs the DDm-K2-SW daughter board for the tactile switch and indicator LEDs:

https://oshpark.com/shared_projects/0o6V4Iia

‘Standard’ BLF parts list, except for:

  • R1 and R2 are populated if MCU pin 7 is used for cell voltage monitoring. This could, however, be done using the software-only method of Vcc vs. the internal 1.1 V reference.
  • R7 is populated when re-purposing pin 7 to drive a second indicator LED, as per the stock driver.
  • There is an R1 on the back of the switch board. A jumper here rewires the two indicator LEDs in parallel, both to be driven from MCU pin 3.
  • C3 = 10 uF is optional
  • C4 = 100 nF is optional
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      Since this is a project designed by a community member, it may contain design errors that prevent it from working as intended. OSH Park cannot place any guarantees about the functionality or correctness of the design.
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