The Fox flasher MkII is designed to run directly from a 1S LiPo battery at 3.8-4.3V. The battery can be charged by a simple voltage limited charger to 4.1V with a small loss in capacity. This article describes a simple solar charger for such a battery. The regulator uses a TL431 precision programmable reference in … Continue reading Solar power supply for foxflasher2
Fox Flasher MkII and several follow on articles described an animal deterrent based on a Chinese 8051 architecture microcontroller, the STC15F104E. This is an update after several years operation outside, and some in-service modifications to improve performance. Above is the current version after 18 months in the weather. Last update: 18th February, 2021, 5:20 PM
Fox Flasher MkII and several follow on articles described an animal deterrent based on a Chinese 8051 architecture microcontroller, the STC15F104E. This is an update after several years operation outside, and some in service modifications to improve performance. Above is the original basic schematic. Above is the revised schematic. One only high current LED driver … Continue reading Fox flasher MkII update 7/2019
Fox flasher MkII described a LED driver for an animal deterrent using a Chinese 8051 architecture microcontroller, the STC15F104E. Above, the schematic. A very simple circuit with just a handful of electronic components (one capacitor, two resistors, one LDR, one Polyswitch, 4 x LEDs and the MCU). Note the capacitor in shunt with the LDR, … Continue reading Fox flasher MkII – update 07/2019
Fox flasher MkII – owenduffy.net described an animal deterrent based on an STC 8051 microcontroller and running from a single LiPo cell. This article describes a further development using a solar cell, shunt regulator, 1S LiPo cell with protection board, and two high power red LEDs. Above, the unit constructed in a medium size Jiffy box, … Continue reading Fox flasher MkII – high power 2 LED solar powered beacon
Fox flasher MkII described a LED driver for an animal deterrent using a Chinese 8051 architecture microcontroller, the STC15F104E. Above, the schematic. A very simple circuit with just a handful of electronic components (one capacitor, two resistors, one LDR, one Polyswitch, 4 x LEDs and the MCU). Last update: 13th June, 2019, 8:37 AM
Fox flasher MkII described a LED driver for an animal deterrent using a Chinese 8051 architecture microcontroller, the STC15F104E. Above, the schematic. A very simple circuit with just a handful of electronic components (one capacitor, two resistors, one LDR, one Polyswitch, 4 x LEDs and the MCU). Last update: 20th June, 2019, 1:27 PM
Flashing LED driver using an ESC described a LED driver for an animal deterrent using a repurposed brushless DC motor electronic speed controller. This article describes a simpler implementation based on a Chinese 8051 architecture microcontroller, the STC15F104E. Above, the schematic. A very simple circuit with just a handful of electronic components (one capacitor, two … Continue reading Fox flasher MkII