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led_clock [2016/04/15 12:17]
kingkevin add release
led_clock [2017/10/13 16:13]
kingkevin link old firmware
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 For that you will need: For that you will need:
   * WS2812b RGB LEDs strip (long enough to go around the clock)   * WS2812b RGB LEDs strip (long enough to go around the clock)
-  * development board with a STM32F103 micro-controller and 32.768 kHz oscillator for the Real Time Clock (such as the blue pill)+  * development board with a STM32F103 micro-controller and 32.768 kHz oscillator for the Real Time Clock (such as the blue pill), or external RTC module such as the I2C DS1307 (only supported in the [[https://git.cuvoodoo.info/led_clock-old/|old firmware]])
   * coin cell battery to keep the RTC running (optional)   * coin cell battery to keep the RTC running (optional)
   * GL5528 photo-resistor to adjust the LED brightness (optional)   * GL5528 photo-resistor to adjust the LED brightness (optional)
 +  * DCF77 to automatically update the time (recommended)
  
 More details about the project can be found in the [[https://git.cuvoodoo.info/led_clock/about/|README]].\\ More details about the project can be found in the [[https://git.cuvoodoo.info/led_clock/about/|README]].\\
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 ==== add-on ==== ==== add-on ====
  
-{{  :led_clock:setup.jpg?300|LED clock add-on}}+{{  :led_clock:setup-dcf.jpg?300|LED clock add-on}}
 Here is the LED clock add-on: Here is the LED clock add-on:
-  - WS2812b LED strip 
   - blue pill development board with STM32F103 micro-controller   - blue pill development board with STM32F103 micro-controller
-  - USB for power, SWD adapter to flash, USB to UART converter to debug +  - tiny RTC I2C module with Maxim DS1307 RTC IC (not used in the end) 
-  - tiny RTC i2C module with Maxim DS1307 RTC IC+  - CR2032 coin cell battery (to keep the internal RTC running) 
 +  - DCF77 receiver module (salvaged from a radio clock) 
 +  - USB to power board and LEDs 
 +  - ST-Link V2 (clone) to program the micro-controller 
 +  - USB to UART converter to set time and debug 
 +  - WS2812b LED strip
   - GL5528 photo-resistor   - GL5528 photo-resistor
-  - CR2032 coin cell battery 
  
 ==== clock integration ==== ==== clock integration ====
led_clock.txt · Last modified: 2017/10/13 16:13 by kingkevin