95% of late night mistakes corrected......

ive got the circuit layout down to 3 jumpers.

much work left to do, including trim pots for gauss cut-offs (and...well....all the soldering...)
rough sketch:

i

Code: [Select]

nt hallpin1 = A3;
int hallpin2 = A4;
int coil1 = 9;
int coil2 = 10;
void setup() {
 
  pinMode(coil1,OUTPUT);
  pinMode(coil2,OUTPUT);
 
}

void loop() {
 
 

  float gauss1 = analogRead(hallpin1);
 
  float gauss2 = analogRead(hallpin2);
 
 
 
  if (gauss1 >= 629) {
    digitalWrite(coil1,LOW);
    digitalWrite(coil2,HIGH);
  }
  else {
  digitalWrite(coil1,HIGH);
  }
 
  if (gauss2 <= 387) {
    digitalWrite(coil2,LOW);
    digitalWrite(coil1,HIGH);
  }
  else {
  digitalWrite(coil2,HIGH);
  }
;

}

incase anyone can actually read anything here (ill make a better drawing once it hits final stages):

Q1+Q3 2N2222
Q2+Q4 IRFD9024
C1 25v220uf
C2+C3 not sure
R2+R4 not sure
all pots are 10K
D1+D2 1N4007
U1+U2 CD4046
Arduino Nano

a couple early crappy vids

https://www.youtube.com/watch?v=KtrFF_jdWbw

https://www.youtube.com/watch?v=Mg_uGF-3Vhc

most annoying sound ever

https://www.youtube.com/watch?v=ElbtTYFYWMA

some of the .stl used

lastly...these are the linear hall sesors used.

http://www.jameco.com/z/SS49E-Microswitch-Honey-Linear-Hall-Effect-Sensors-3-Pin-Tape-and-Reel_1915940.html

coils are mag 34, roughly 18 ohms each.

this is a fun and cool project, the idea behind using a push push mode is key.

what magnets do i need to make this?

thanks for publishing this!

~Russ

Interesting, many thanks :thumbsup:

Good share and very interesting setup. Thanks my friend :)

thanks guys.
the board is finished, and as expected....adding two more analogRead (for trim pots) lagged the nano down a little much. it still works, but higher frequency is better for sure.
im looking at overclocking options, etc but im pretty sure ive got what i wanted form this project so far.
i still hate these perf boards.....gee, it would be nice to have someone in the community that could whip off custom circuitboards.....(wink, wink)

ok, this is pretty much final code.....and it is functioning at 9v input, roughly 240mA (so a new 9v battery should power the whole thing just fine)

Code: [Select]

int hallpin1 = A6;
int hallpin2 = A5;
int trim1 = A0;
int trim2 = A3;
int coil1 = 8;
int coil2 = 10;

void setup() {
 
  pinMode(coil1,OUTPUT);
  pinMode(coil2,OUTPUT);
 
  }

void loop() {
 
  float tweak1 = analogRead(trim1);
 
  float tweak2 = analogRead(trim2);
 
  float gauss1 = (analogRead(hallpin1)+(tweak1/50));
 
  float gauss2 = (analogRead(hallpin2)+(tweak2/50));
 
  if (gauss1 >= 637) {
    digitalWrite(coil2,LOW);
    digitalWrite(coil1,HIGH);
  }
  else {
  digitalWrite(coil2,HIGH);
  }
 
  if (gauss2 <= 402) {
    digitalWrite(coil1,LOW);
    digitalWrite(coil2,HIGH);
  }
  else {
  digitalWrite(coil1,HIGH);
  }

}