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Apparently, there are two version 1 modules. The classic ‘blue’ one has 512kBytes (4Mbits) for its flash memory, let me call it the ESP8266-01a or just ESP-01a, and a black one that has 1MByte (8Mbits) memory let me call that … Continue reading →
This program allows a Wemos D1(Retired) board to act as a server in its own little private network It does not connect to a router. Strangely, too many pages claim “stand alone server” yet in their code actually attack it … Continue reading →
Updated again (Sat 5th Aug 2017): Here’s a suggestion on how to build the LED part of the circuit on the breadboard… The red, green and blue wires go to the pins you defined in the code. I think … Continue reading →
I am very confident you can write “CH3” and “OH” as well as “NH2” in displayed formula because they are terminal groups. Better to show the triple bond of nitriles though but you could probably get away with just writing … Continue reading →
Student question: When the question says “give the structure of each isomer” and gives us 4 boxes for answers, the mark scheme wrote the structural formula. Will it be wrong to if we draw the displayed formula. I’ve had a … Continue reading →
Updated 30th April 2017 Q5. General simple info: Allyl group is a terminal alkene group. i.e. a =CH2 group. Of course they must appear at the end of a chain. They have some unique properties, hence a separate name is … Continue reading →