LiPo Charger USB v18.02

Overview

Lithium polymer battery unit. Charges and maintains battery from USB 5V, output 5V over USB, allows data to pass through.

Goals

• No need to remove for basic operations
  • Charge through panel mounted USB port
  • Upload Arduino skectches through USB port
  • On off switch

Tentative BOM

• USB A Female Breakout Sparkfun

• LiPo Battery Sparkfun
  • Sparkfun

• LiPo Charger "Battery Babysitter" Sparkfun

• Boost Converter w/ charger Sparkfun

• 100K Resistor mouser

• Female Headers

• Male Jumper Wires

• USB B Panel Mount - mouser
  • Panel Mount Cover - mouser

• On/Off/On DPDT Toggle Switch grainger

Case

3D printed to mount and encase circuit boards in a end-user-friendly manner.

$fn=32;

SFusbbo();

translate([1.08+(0.1),0,0.2195-0.1165])
SFbbs();

translate([0,0.8+(0.1),0])
SFlipow();

LiPoUSBCase();

module SFbbs() {
    difference(){
    union(){
    cube([1.325,1.3,0.065]);  //PCB
    translate([0.42-(0.3155/2),1.3-1.32,0.065])
    cube([0.3155,0.225,0.168-0.065]);
    
    //usb heigh w/pcb 0.168
    //height to center of usb   0.1165
    //usb width 0.3155
    //usb depth 0.225
    //usb center to next edge 0.42
    //usb pcb width 1.32
    
    translate([1.325-0.305-0.1,0.515-(0.315/2),0.065])
    cube([0.305,0.315,0.2845-0.065]);
    
    //batin center to next edge .515
    //batin width 0.315
    //batin height /pcb 0.2845
    //depth 0.305
    //from edge 0.1
}// end union

    translate([(1.325/2)-(1.1/2),(1.3/2)-(1.1/2),0]){
    translate([1.1,1.1,0])    
    cylinder(d=0.125,h=0.065);
    translate([1.1,0,0])    
    cylinder(d=0.125,h=0.065);
    translate([0,1.1,0])    
    cylinder(d=0.125,h=0.065);
    translate([0,0,0])    
    cylinder(d=0.125,h=0.065);
    } //hole group translate
}//end difference
    
    //hole c2c 1.1 x 1.1 D = 0.125
}

module SFusbbo() {
difference(){
    union(){
    cube([1.025,0.8,0.065]);  //PCB
    translate([(1.025/2)-(0.52/2),0.8-0.908,0.332-(0.225)])
    cube([0.52,0.572,0.225]);  //USB
    } //end union
    translate([(1.025/2)-(0.8125/2),(0.8/2)-(0.6125/2),0]){
    translate([0.8125,0.6125,0])    
    cylinder(d=0.125,h=0.065);
    translate([0.8125,0,0])    
    cylinder(d=0.125,h=0.065);
    translate([0,0.6125,0])    
    cylinder(d=0.125,h=0.065);
    translate([0,0,0])    
    cylinder(d=0.125,h=0.065);
    } //hole group translate
} //end difference
    //height to USB center 0.2195
    //usb height 0.332
    //usb thickness 0.2775  0.225
    //usb width .565    0.52
    //usb depth .572
    //pcb width with USB .908
    //wall thickness 0.9
    //bottom through hole sticking out 0.16
    //hole c2c 0.8125 x 0.6125 D = 0.125
}

module SFlipow() {
    cube([1.08,0.524,0.065]);  //PCB
    
}

module BAT2000() {
    cube([2.68,1.97,0.065]);  //PCB
    
    
}

module LiPoUSBCase() {
        translate([(1.025/2)-(0.8125/2),(0.8/2)-(0.6125/2),0]){
    translate([0.8125,0.6125,0]){    
    cylinder(d1=0.11, d2=0.09 ,h=0.2195);
    translate([0,0,-0.16])    
    cylinder(d=0.18,h=0.16);
    }
    translate([0.8125,0,0]){    
    cylinder(d1=0.11, d2=0.09 ,h=0.2195);
    translate([0,0,-0.16])
    cylinder(d=0.18,h=0.16);
    }
    translate([0,0.6125,0]){    
    cylinder(d1=0.11, d2=0.09,h=0.2195);
    translate([0,0,-0.16])
    cylinder(d=0.18,h=0.16);
    }
    translate([0,0,0]) {   
    cylinder(d1=0.11, d2=0.09,h=0.2195);
    translate([0,0,-0.16])
    cylinder(d=0.18,h=0.16);            
    }        
    } //hole group translate
    
    
}
 

Wiring Diagram

edit

See Also

• MicroTrac Controller v18.02
• USB - Wikipedia
• Shottky Diode - Wikipedia