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Month: January 2021

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2 min 0
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Using large / high current 7 segment LED displays with the MAX7219

  • admin
  • 23/01/2021
I have some largish 7 segment displays which are 0.8″ in height but I found that they were dim when driven from a MAX7219 even at full brightness. I found that this was because the LED displays I were using need around 15 mA for a decent amount of brightness, 25mA ideal. However the MAX7219 […]
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P&G aircraft cockpit voice recorder (black box) teardown
2 min 0
  • Avionics
  • General

P&G aircraft cockpit voice recorder (black box) teardown

  • admin
  • 16/01/2021
In this teardown video I’ve got something pretty cool; a black box from an RAF Nimrod MRA4 which was a failed project and numerous aircraft were built but were never delivered to the RAF and were later scrapped. This one does show some signs of wear and tear although it may well be damage due […]
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2 min 0
  • General

Clone Wemos D1 mini boards intermittent resetting and other problems

  • admin
  • 09/01/2021
I’ve recently been experimenting with the ESP8266 modules and made a YouTube statistics counter as the first and experimental project. I used a NodeMCU for that which gave me no problems at all. However there is a smaller board, the Wemos D1 mini which on first impressions looks like a more ideal board for final […]
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