How To Build A Solar Charged RC Electric Lawn Mower


Robert Smith has put together a series of videos below that will show you how to create a solar charged remote control electric lawn mower (SCRCELM). The videos below will explain everything you need to know such as what parts to order, how to hook up components, advice, and more. After viewing a video, the video player will automatically take you to the next video in the series. So sit tight, enjoy, and let Robert guide the way.

SCRCELM Photo Gallery

Important Files & Downloads & Tutorials


– Google Sketchup (SCRCELM) 3D Model Drawing File


–Google Sketchup How To Take Measurements Video Tutorial Video

–Google Sketchup Additional Video Tutorials Video


–Google Sketchup (Mac & PC Compatible) Download


Below is the weight for the primary components apart of the SCRCELM


Weight (in pounds)

Lawn Mower 64
Batteries 46.3
Aluminum & Bolts/Screws 15
Tires 14
Swivel Wheels 12
Motors 40
Solar Panels 12
Electronics 9

The total weight for the SCRCELM is approximately 210lbs – 250lbs.

SCRCELM Parts List

Parts List Last Updated On: Dec. 20, 2011

Part Part # Location

Frame & Body

Steelworks Aluminum Flat 1/8 x 2 x 8′ (Quantity may vary) 55960
Steelworks Aluminum Flat 1/8 x 1-1/2 x 8′ (Quantity may vary) 55959
Steelworks Aluminum Flat 1/8 x 1 x 8′ (Quantity may vary) 55958
Steelworks Aluminum Angle 1/8 x 1-1/2 x 8′ (Quantity may vary) 55973
Steelworks Aluminum Angle 1/8 x 1 x 8′ (Quantity may vary) 55971
HM 5/16 – 18 x 1 Hex Bolt (100 pack) 63317
Stop Nuts Nylon Insert 5/16 – 18 (100 pack) 180150
HM 5/16 – 18 x 1 1/2 Hex Bolt 63318
HM 5/16 – 1/2 Hex Bolt 135696
Nylon MS BH/Slot 1/4-20 x 1 139081
Nylon Hex Nuts 1/4-20 138986
5/16 Drill Bit 219775
Multiuse Lube WD40 188735

Electric Wheelchair Related Components

Electric Wheelchair Motors eBay
Sabertooth 2X25 Dual Motor Driver Sabertooth 2×25 Dimension Engineering
DX5e DSMX 5-Channel Transmitter/Receiver Spektrum Amazon
Male Servo Connector B0006O5LOA Amazon
9-18VDC Hobby Motor 273-256 RadioShack
2x NOCO Group U1 Battery Box BOX-U1 BatteryMart
2x 13×5.00-6 Carlisle Tire Split Rim 260120 BMI Karts & Supplies
The Hillman Group 5/16″ x 2″ Zinc Plated Fine-Thread Hex Bolt 138064
Hitachi 13/32″ Drill Bit N/A
Flat Washers 5/16 – Box Set N/A
2x UB12350 Group U1 Battery Universal Power Group Amazon
24v Battery Charger 022-0158-1 Amazon
20-Ft. UL-Recognized Red Hookup Wire (12AWG) 278-565 RadioShack
20-Ft. UL-Recognized Black Hookup Wire (12AWG) 278-566 RadioShack
Waxman 8-Inch Polyurethane Caster with Swivel 4136455

Lawn Mower Related Components

Black & Decker CM1836 Electric Lawn Black & Decker Amazon
1x 1N4007 1A 1000V Rectifier Diode 220754568126 eBay
36 Volt Continuous Duty Solenoid Relay SSMU-1021 Amazon
25A Solid State Relay SSR DC In DC Out ESSR-25DDC LightObject
Heatsink for Solid State Relay 175441 OSCSYS
Heatsink Compound 17568 OSCSYS
In-line ACT Water-resistant Fuse Holder – 10 AWG Inline Amazon
Heat Shrink Tubing 773809 Lowes

Microprocessor Related Components

Parallax Board of Education 28803 Parallax
1x 9v Battery Clip 2700325 RadioShack
1x IRF3205 MOSFET 618089 Jameco
1x PicoSwitch PicoSwitch Dimension Engineering

Solar Related Components

1x Morningstar PS15 ProStar 15 Charge Controller (PS-15) PS-15 Infinigi
2x 12v 20 Watt Solar Panels STP020P UL-Solar
8x Z Style Flat Roof Mounting System (Brackets) Z-BRACKET UL-Solar
24v Power Inverter 170644050866 eBay
Pan Head Slotted Screws 4-40 x 3/4 881944
Hex Machine Nuts Stainless 4-40 882014

Other Electric Components

Voltage Regulator DE-SWADJ3 Dimension Engineering
Voltage Regulator Breakout Board Vreg Breakout Dimension Engineering
Dri-box Waterproof Outdoor Connection Enclosure 58-14220 MCM
Cooler Master Computer Case 120mm Cooling Fan B0026ZPFCK Amazon
SilverStone 120mm Fan Filter with Grill FF121B FF121B Amazon
Nylon Wing Nuts 1/4″-20 138998
Nylon Mach Screw 1/4″ x 1-1/2″ 139008
Nylon Mach Screw 1/4″ x 1/2″ 139081
Nylon Hex Nut 1/4″-20 138986
2x 25A DPDT Toggle Switch 360-1909-ND Digi-Key
1x 50A Toggle Switch (On-Off) 85904 Autozone
2x 36v Battery Voltmeter 150609894288 eBay
2x SPST Rocker Switch 275-693 RadioShack
100A Busbar 2314 Amazon
Pwr Plug Sealed IP68 502-S761KS12 Mouser
Pwr Jack Sealed IP68 502-L722AS Mouser
Digital Multimeter 22-813 RadioShack

Recommended Tools & Machines

Torque Wrench / Kit Any Home Improvement Store
Wrench / Kit Any Home Improvement Store
Band Saw Any Home Improvement Store
Belt Sander Any Home Improvement Store
Drill Press / Power Drill Any Home Improvement Store
Heavy Duty Spring Clamps Any Home Improvement Store


Comments & Questions

Check my Frequently Asked Questions (FAQ) page prior to using the contact page. If your question is not listed on the FAQ page or if you wish to leave a comment, visit my contact page.

DISCLAIMER – Controlling an unmanned vehicle as shown above can be potentially lethal. You run the potential risk of hurting someone, an animal, or yourself if proper precautions are not taken. I accept no responsibility for any potential dangers that may arise while you build the vehicle above. If you decide to build the device above, you do so at your own risk, and you are acknowledging that you and only you will be held responsible if any problems occur.

The Media

Other places this project has been talked about:


Robert's Links

  • Green Tech Town
  • Music Site
  • RC Lawn Mower
  • The PHP Basics
  • Robert's Online Shop

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