function init_OLED(sda,scl) —Set up the u8glib lib sla = 0x3C i2c.setup(0, sda, scl, i2c.SLOW) disp = u8g.ssd1306_128x64_i2c(sla) disp:setFont(u8g.font_6x10) disp:setFontRefHeightExtendedText() disp:setDefaultForegroundColor() disp:setFontPosTop() —disp:setRot180() — Rotate Display if needed end
function write_OLED() — Write Display disp:firstPage() repeat disp:drawStr(50, 10, "Timer") disp:drawStr(40, 30, string.format("%02d:%02d:%02d",h,m,s)) disp:drawStr(20, 50, "hello") until disp:nextPage() == false end
— Main Program init_OLED(sda,scl)
tmr.alarm(0, 1000, 1, function() — Every second increment clock and display s = s+1 if s==60 then s=0 m=m + 1 end if m==60 then m=0 h=h + 1 end if h==13 then h=1 end write_OLED() end)
function init_OLED(sda,scl) —Set up the u8glib lib sla = 0x3C i2c.setup(0, sda, scl, i2c.SLOW) disp = u8g.ssd1306_128x64_i2c(sla) disp:setFont(u8g.font_6x10) disp:setFontRefHeightExtendedText() disp:setDefaultForegroundColor() disp:setFontPosTop() —disp:setRot180() — Rotate Display if needed end
function write_OLED() — Write Display disp:firstPage() repeat disp:drawStr(50, 10, "Timer") disp:drawStr(40, 30, string.format("%02d:%02d:%02d",h,m,s)) disp:drawStr(20, 50, "hello") until disp:nextPage() == false end
— Main Program init_OLED(sda,scl)
tmr.alarm(0, 1000, 1, function() — Every second increment clock and display s = s+1 if s==60 then s=0 m=m + 1 end if m==60 then m=0 h=h + 1 end if h==13 then h=1 end write_OLED() end)
BY Micropython & IOT
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Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank. Bitcoin’s creator, Satoshi Nakamoto, originally described the need for “an electronic payment system based on cryptographic proof instead of trust.” Each and every Bitcoin transaction that’s ever been made exists on a public ledger accessible to everyone, making transactions hard to reverse and difficult to fake. That’s by design: Core to their decentralized nature, Bitcoins aren’t backed by the government or any issuing institution, and there’s nothing to guarantee their value besides the proof baked in the heart of the system. “The reason why it’s worth money is simply because we, as people, decided it has value—same as gold,” says Anton Mozgovoy, co-founder & CEO of digital financial service company Holyheld.
Newly uncovered hack campaign in Telegram
The campaign, which security firm Check Point has named Rampant Kitten, comprises two main components, one for Windows and the other for Android. Rampant Kitten’s objective is to steal Telegram messages, passwords, and two-factor authentication codes sent by SMS and then also take screenshots and record sounds within earshot of an infected phone, the researchers said in a post published on Friday.
