HELP WITH PCB FOR CRANES
First and foremost, i do not have any experience working on printed circuit boards. I have 2 PCB's that I've recently soldered and mirrored the exact PCB that I pulled out and was working. I went to hook them back up and neither board that I soldered would work. I've tried several different approaches to try and figure out, but I'm still completely stumped. I have checked all the resistors, transistors and relays and all were good. If i do a test on the relay, the motor will kick on and move the cranes like it's supposed to. When i push the button to move the crane forward or backward my motor light will light up and the direction but still no movement from the crane. I have attached some pics of the board i soldered as well as the document that I've been going off of. I'm not sure if my code is wrong since i do not know how to code. Thank you so much in advance for all the help.
A simple relay setup activates the DC motor in 2 directions. Two DPDT relays are used along with
appropriate source transistors. To detect trolley reaching end of rail, two miniature magnetic switches are activated by magnets mounted on the rolling mechanism. A simple 12V light is placed at crank side of each of the trolley rails. When the roller reaches the either end, the light is activated.
The controller circuit listens to the two pushbuttons and activates the two relays accordingly. Since the relays require current at the current output threshold of the BS2, TIP120 transistors are used to beef up current supply.