Hello community! I'm a programmer of many years but my experience of electronics is limited and so I'd ask for your guidance as this is my first arduino project
What am I trying to do?
- I have 10 LEDS (decking LEDs)
- Each LED is chained to the next by it's negative pole (in other words I have a single wire connecting the whole lot)
- The PSU for this is 6 Volts
- I then have 10 wires feeding to each single light on their positive pole
I have done a lot of reading and realised this is less than ideal - but these lights are embedded in a wall and so, well, I'm a bit stuffed if I don't use high side switching. I have a breadboard, some resistors, some NPN transistors (which I now realise I can't use after experimentation) and have prototyped some code to show sequencing etc. works (and learn arduino). I can control 10 outputs fine with my
From what I've read it seems I need a greater level of complexity to switch the lights on positive only - it looks me like two transistors are required per light, resistors to control current. I've had a crash course in transistors via the web and am quite excited by electronics
I have a ARCELI WeMos D1 R2 WiFi ESP8266 board.
Can anyone give me some guidance on the circuit I'm trying to build? My current thinking is to use PNP transistors in a pair per 'switch' but I'm unsure of resistor values and so forth.
I have to admit there is a part of me thinking about relays just for the fun noises of them clunking on/off but this feels a bit out of odds with modern times. I'm totally aware this would of been better with low side switching and an appropriate (super cheap) add on board to do it.