BLF driver DDm-K2 [rev01a][untested]
author: DEL
2 layer board of 1.34 x 1.34 inches (34.0 x 34.0 mm)
Uploaded:
April 02, 2017
Shared:
April 02, 2017
Total Price:
$8.95
DDm driver for Solarstorm/Fandyfire K2 lights.
Revision changes
- Full size SOT-89 pads for the 7135
- Unmasked L+ vias, to be solder-filled
Needs the DDm-K2-SW daughter board for the tactile switch and indicator LEDs:
https://oshpark.com/shared_projects/E7YKjPjG
‘Standard’ DDm 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.
DDm driver for Solarstorm/Fandyfire K2 lights.
Revision changes
- Full size SOT-89 pads for the 7135
- Unmasked L+ vias, to be solder-filled
Needs the DDm-K2-SW daughter board for the tactile switch and indicator LEDs:
https://oshpark.com/shared_projects/E7YKjPjG
‘Standard’ DDm 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.
