| Electronics > Beginners |
| Traffic light circuit |
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| FlyingHacker:
Could also be done with some DIP8 comparators. Just charge a cap through a resistor and have comparators to turn in each LED, and finally reset. You could even use the 555 for the charging and reset, but just have the comparators measure the voltage directly at the capacitor. |
| NivagSwerdna:
--- Quote from: rthorntn on June 10, 2018, 05:04:25 am ---I'm working with my 7yo daughter to build a traffic light circuit without an MCU --- End quote --- You might be putting her at a disadvantage to those 7yr olds that have already completed their traffic light circuits because they chose to use an Arduino. In fact they probably now have four sets of lights and a full traffic junction coded by now. |
| Zero999:
--- Quote from: NivagSwerdna on June 11, 2018, 04:12:27 pm --- --- Quote from: rthorntn on June 10, 2018, 05:04:25 am ---I'm working with my 7yo daughter to build a traffic light circuit without an MCU --- End quote --- You might be putting her at a disadvantage to those 7yr olds that have already completed their traffic light circuits because they chose to use an Arduino. In fact they probably now have four sets of lights and a full traffic junction coded by now. --- End quote --- You're assuming all the other 7 year olds will be using Arduinios. Often placing artificial limits on things, promotes creative thinking. For example being asked to build the tallest tower, made from a packet of printer paper. There's plenty of time for her to learn to code later. |
| wraper:
--- Quote from: Hero999 on June 12, 2018, 08:02:14 am ---Often placing artificial limits on things, promotes creative thinking. For example being asked to build the tallest tower, made from a packet of printer paper. There's plenty of time for her to learn to code later. --- End quote --- Placing artificial limits is discouraging, there must be some sort of success to get encouragement. On top of that, coding even something simple means you have designed something by your own. Repeating preexisting circuit is not. |
| Zero999:
--- Quote from: wraper on June 12, 2018, 08:30:58 am --- --- Quote from: Hero999 on June 12, 2018, 08:02:14 am ---Often placing artificial limits on things, promotes creative thinking. For example being asked to build the tallest tower, made from a packet of printer paper. There's plenty of time for her to learn to code later. --- End quote --- Placing artificial limits is discouraging, there must be some sort of success to get encouragement. --- End quote --- It mimics real life. Quite often, it's not feasible to do something the easiest way. --- Quote ---On top of that, coding even something simple means you have designed something by your own. Repeating preexisting circuit is not. --- End quote --- I agree but the same is true, whichever method is used: copying someone else's code is even more pointless. |
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