Rover Alternative Parts and Cost Reduction

This page is a work-in-process that will be updated over time as new products become available to reduce the cost of the completed prototype. Some of these solutions are just to make existing products work, like the Adafruit tablet that can’t charge the battery. Others are to replace expensive “early models” like the MoPower UPS board and apparently no technical support.

Rig AllSpectrum MoPower UPS:

Eletechsup piece parts versus AllSpectrum MoPower UPS ($55) + 12V Battery ($22):

10W 3.7V 4.2V Charger & 5V 6V 9V 12V Discharger Board DC DC Converter Boost Step-up Module UPS diy Li-lon LiPo lithium battery – 5V for RPi, $5

3.7V 4.2V 3A Li-ion Lithium Battery Charger Over Charge Discharge Overcurrent Protection Board Module, $1.5

Garberiel 3.7V 2000 mAh 18650 Rechargeable Battery Button Top – 2 @ $5.5 (3.7V x 2 = 7.4V)

eletechsup (AliExpress) and amazon.com cost:  $12 versus $77. Needs unique real estate (not HAT) and wiring.


UPS HAT Board + 2500mAh Lithium Battery – 5V for RPi, $14

DC 5.5mm/2.1mm Wall Power Supply – $7, to charge RPi battery.

MicroUSB to DC 5.5mm/2.1mm Connector – $4, to route wiring to exterior access.

Knew 4 you Store (AliExpress) cost:  $25 versus $77. Plug and Play.


DC Motor HAT Power Supply:

Eletechsup piece parts versus Tenergy Charger ($55) + 12V Battery ($22):

10W 3.7V 4.2V Charger & 5V 6V 9V 12V Discharger Board DC DC Converter Boost Step-up Module UPS diy Li-lon LiPo lithium battery – 12V for DC Motor HAT, $5

3.7V 4.2V 3A Li-ion Lithium Battery Charger Over Charge Discharge Overcurrent Protection Board Module, 4 x $1.5 = $6

Garberiel 3.7V 2000 mAh 18650 Rechargeable Battery Button Top – 4 @ $11 (3.7V x 4 = 14.8V)


Rig Geekworm Raspi-Motor HAT:

SB DC Motor Board – $14 versus Geekworm $25.


Remote Control Battery Charger:

eletechsup piece parts versus Adafruit PowerCharger ($20) and LiPo battery ($15):

10W 3.7V 4.2V Charger & 5V 6V 9V 12V Discharger Board DC DC Converter Boost Step-up Module UPS diy Li-lon LiPo lithium battery – 5V for RPi, $5

3.7V 4.2V 3A Li-ion Lithium Battery Charger Over Charge Discharge Overcurrent Protection Board Module, $1.5

Garberiel 3.7V 2000 mAh 18650 Rechargeable Battery Button Top – 1 @ $2.75

eletechsup and amazon.com cost:  $9.25 versus $35. Needs unique real estate and wiring plus room for battery.


UPS HAT Board + 2500mAh Lithium Battery – 5V for RPi 2, $14

Knew 4 You store cost:  $14 versus $35. With 3D print change for micro USB on HAT not RPi and GPIO expansion pins cut, board is Plug and Play. If that doesn’t fit, need to reprint frame deeper for HAT.

Knew 4 you Store cost:  $14 versus $35.