Got the new QTR sensor and want to know and compare it with my previous one…QTR 8A
Looking at the new range of QTR sensors, one thing that caught my interest was that the boards can be powered by any voltage between 2.9v and 5.5v, this could be really useful for many situations…
when I looked at the schematic of ‘A’ series sensors (link below), the V IN is directly connected to the emitter… does this mean that 5.5v is connected to emitter? or any kind of power regulator or buck converter is employed to regulate the voltage? what is the value of V IN? and I don’t get what is the current source doing there?
sorry for a ton of questions, getting started with robotics…
- 32 levels of brightness control
- input voltage from 2.9v to 5.5v
is there any other change? new sensor or the same QRE1113