T
tehtehteh
I haven't selected a relay yet, but the plan was for it to be 5v and latching, so it only requires a pulse to switch on and another to switch off, that way the linear regulator is hardly doing anything most of the time - problem is latching ones seem to be hard to find
does the 2 power connections to the PicAxe make sense? is it as simple as putting a diode on each like I have done? - I can't try this in yenka as it sets the PicAxe max rating to 0v and it blows no matter what, it's pretty frustrating to work with
the 7800 data sheet I was looking at recommends capacitors but I was also going to put one on each 12v line to stop it dropping lower than 7 volts during engine start. I think the buck converter has smoothing capacitors already but I will check
could you explain the transistor resistor to me? this is where my knowledge of electronics lets me down, I originally tried a mosfet there because I thought it would draw no current from the picaxe but I couldn't get this to work in yenka
do you think the buck converter negatives should be connected together so everything shares the same ground?
does the 2 power connections to the PicAxe make sense? is it as simple as putting a diode on each like I have done? - I can't try this in yenka as it sets the PicAxe max rating to 0v and it blows no matter what, it's pretty frustrating to work with
the 7800 data sheet I was looking at recommends capacitors but I was also going to put one on each 12v line to stop it dropping lower than 7 volts during engine start. I think the buck converter has smoothing capacitors already but I will check
could you explain the transistor resistor to me? this is where my knowledge of electronics lets me down, I originally tried a mosfet there because I thought it would draw no current from the picaxe but I couldn't get this to work in yenka
do you think the buck converter negatives should be connected together so everything shares the same ground?
