MMDVM ZumSpot Battery Case

thingiverse

This is an innovative 18650 battery case crafted specifically for the popular HRO sold by ZumSpot, which features a 1.3" OLED screen and Pi-0-W computer board. It empowers you to take your hotspot with you wherever you go, or simply use it at home and unplug when needed without rebooting the system. It is designed around an adjustable li-ion boost power supply board and other readily available parts. A note on the components: I've discovered that the dimensions of the charger board and push button switch may vary between orders. You might need to sand the edges of the board for a proper fit, or in case the switch feels tight, I can upload a modified file to accommodate your needs – just ask. Parts List: Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module (available on eBay at http://www.ebay.com/itm/303216487352) 3.7V Li-ion Battery Power Level Indicator Module For Led Voltage Display Meter (available on eBay at http://www.ebay.com/itm/173654256564) Micro USB Male Type B 5-Pin Jack Port Solder Connector (Amazon ASIN# B00OK8ELNA) Belt Clip For BAOFENG Radios BF-666S BF-777S BF-888S (available on eBay at http://www.ebay.com/itm/271911858839) 4 x Metric M2.5X18mm Stainless Steel Allen Hex Socket Cap Head Fastener Screws 4 x Metric M2.5 Stainless Steel Allen Hex Bolt 6 x Steel Thread Rolling Screw for Plastic, Black Zinc Plated, Pan Head, Phillips Drive, #2-28 Thread Size, 1/2" Length (Amazon ASIN# B00GDXUD2S) uxcell AA Battery Positive Negative Conversion Spring Contact Plate (available on Amazon at http://www.amazon.com/dp/B00O9XVE2M) Mini Push Button Latching On Off Switches (available on eBay at http://www.ebay.com/itm/183366037839) 18650 Battery ZumSpot from HRO with 1.3" OLED screen and Pi-0-W You will also need hookup wire, soldering skills, and a multimeter to set the output voltage of the dc-dc boost controller – I set mine to 5.2 volts. 73 KC6NKK