04-10-2019, 11:01
Hi all,
After 20 years of service, my 2 large LED displays needed an upgrade to work with the amazing WeatherDuino system.
[attachment=1992]
They were connected to my Peet Bros Ultimeter weather station by a serial data connection but I liked the flexibility of the WD system so I stripped the pcb's of the old microcontroller and all components, leaving only the MC14489P 7 segment driver and the LED displays.
One Arduino Uno per display, a DIP switch to select what weather data to display and on several display's 5 external led's was needed to get it up-to-date.
The Wemos D1 with only one DC-DC converter to power the 8 pcb's was sufficient.
The options to display weather data are without limits.
for example:
- 1 display will show the 5 minute average peak wind speed value and the today wind speed peak value, alternating changing every 5 seconds
- the other display will show the 5 minute average wind direction and 5 minute average wind speed, alternating changing every 5 seconds
- rain:
if it's not raining, the display will show the rainfall today
if it's raining the display will show the rainfall in mm/hour alternating with the rain total today.
else if it's dry for >1 day the display will show the days of no rain.
also the external 5 led's will show the rain rate:
1 led: drizzle, 2 led's: light rain etc.
Meteorologists classify rain rates for different levels of activity:
Type of Storm - Rate
------------------------------------
Light Rain: - 2 - 4 mm/hr
Moderate: - 5 - 9 mm/hr
Heavy: - 10 - 40 mm/hr
Violent: - more than 40 mm/hr
What I like the most is the warning if the barometric pressure is falling very fast.
The external red LED's will blink rapidly so I know something is coming....
// Term Pressure Tendency Over 3 Hours LED indicators:
// ======================= ============================== ==========================
// Rising very rapidly More than 6.0 mb LED_4 and LED_5 both blink at 500ms rate
// Rising quickly 3.6 to 6.0 mb LED_4 is BLINKING at 1000ms rate
// Rising 1.6 to 3.5 mb LED_4 and LED_5 both are ON
// Rising slowly 0.1 to 1.5 mb LED_4 Led is ON
// Steady Less than 0.1 mb STEADY Led is ON
// Falling slowly 0.1 to 1.5 mb LED_2 Led is ON
// Falling 1.6 to 3.5 mb LED_2 and LED_1 both are ON
// Falling quickly 3.6 to 6.0 mb LED_2 is BLINKING at 1000ms rate
// Falling very rapidly More than 6.0 mb LED_2 and LED_1 both blink at 500ms rate
temperature:
every set time, the display will show the max and min temperatures after midnight reset.
The external led bar will show the temp rise or falling rate.
The project will be open source of course and available on my hackster page when ready...
www.hackster.io/edr1924
The various display options:
only one video per post...
To see the inside click here: https://youtu.be/AaEEy97CoGw
After 20 years of service, my 2 large LED displays needed an upgrade to work with the amazing WeatherDuino system.
[attachment=1992]
They were connected to my Peet Bros Ultimeter weather station by a serial data connection but I liked the flexibility of the WD system so I stripped the pcb's of the old microcontroller and all components, leaving only the MC14489P 7 segment driver and the LED displays.
One Arduino Uno per display, a DIP switch to select what weather data to display and on several display's 5 external led's was needed to get it up-to-date.
The Wemos D1 with only one DC-DC converter to power the 8 pcb's was sufficient.
The options to display weather data are without limits.
for example:
- 1 display will show the 5 minute average peak wind speed value and the today wind speed peak value, alternating changing every 5 seconds
- the other display will show the 5 minute average wind direction and 5 minute average wind speed, alternating changing every 5 seconds
- rain:
if it's not raining, the display will show the rainfall today
if it's raining the display will show the rainfall in mm/hour alternating with the rain total today.
else if it's dry for >1 day the display will show the days of no rain.
also the external 5 led's will show the rain rate:
1 led: drizzle, 2 led's: light rain etc.
Meteorologists classify rain rates for different levels of activity:
Type of Storm - Rate
------------------------------------
Light Rain: - 2 - 4 mm/hr
Moderate: - 5 - 9 mm/hr
Heavy: - 10 - 40 mm/hr
Violent: - more than 40 mm/hr
What I like the most is the warning if the barometric pressure is falling very fast.
The external red LED's will blink rapidly so I know something is coming....
// Term Pressure Tendency Over 3 Hours LED indicators:
// ======================= ============================== ==========================
// Rising very rapidly More than 6.0 mb LED_4 and LED_5 both blink at 500ms rate
// Rising quickly 3.6 to 6.0 mb LED_4 is BLINKING at 1000ms rate
// Rising 1.6 to 3.5 mb LED_4 and LED_5 both are ON
// Rising slowly 0.1 to 1.5 mb LED_4 Led is ON
// Steady Less than 0.1 mb STEADY Led is ON
// Falling slowly 0.1 to 1.5 mb LED_2 Led is ON
// Falling 1.6 to 3.5 mb LED_2 and LED_1 both are ON
// Falling quickly 3.6 to 6.0 mb LED_2 is BLINKING at 1000ms rate
// Falling very rapidly More than 6.0 mb LED_2 and LED_1 both blink at 500ms rate
temperature:
every set time, the display will show the max and min temperatures after midnight reset.
The external led bar will show the temp rise or falling rate.
The project will be open source of course and available on my hackster page when ready...
www.hackster.io/edr1924
The various display options:
only one video per post...
To see the inside click here: https://youtu.be/AaEEy97CoGw
