harbor freight battery carrier

Clerget 9B rotary aero engine
prusaprinters

Running off a 9V battery, I guess it's spinning about 300RPM, which is plenty. The motor slides sideways into the mount (see the yellow test print of the mount. NB: make sure it is the right way round!) which is then screwed to the engine mount with...

Updated Hectorrail 141 locomotive for OS-Railway
thingiverse

Aim at around 5000rpm at 6V so that you can use 4pcs AAA batteries in series or 2 lipo cells in series. Tip: if you cannot find a suitable speed controller and have a standard-size RC servos laying around, you can extract the electronics and cut...

Ba'al Blaster: Rival Charger to P90 Conversion
thingiverse

Mag eject spring: > ~ Should be printed in a stiff material and may need to be supplemented with a battery spring or an additional stiff spring, as sufficient compression to engage Ammo release on the magazine creates a LOT of friction to be...

Bob, should we go fishing ?
thingiverse

I did this intentionally so if I increase the battery packs, he won't be too heavy to float. I used an Arduino Nano and sensors for my circuitry but can upload my program later. I will put together an Instructable and post the link, but if you...

ESPHome Garage Door Sensor / Opener
prusaprinters

I've had this installed on my doors for a couple weeks now and they have been working perfectly. Upgrade plans: Move the distance sensor to the bottom and use it instead for detecting if a car is in the bay. Change the door opening detection to a top...

The Bicycle Bubble Machine
pinshape

I actually found bicycle-mounted bubble machines on the net, but they all run on batteries, neglecting the fact that on our bikes we have a source of energy which is much more sustainable and fun: relative wind. The Bicycle Bubble Machine only uses...

44mm Mecanum Wheel (Small, Solid and Low Cost)
thingiverse

But if you would like to build a similar one, here is some advice: BOM: Printable: Top plate x1; Bottom plate x1; Mecanum wheel x4; Motor mount x4 Non-printable: N20 Gear Box Motor x4; L9110S Dual Motor Driver x2; Logeek Max10 Dev Board x1; ESP8266...

Discosaurus | RGB dinosaur costume
prusaprinters

Pinching the wires between the washers and the base of the spike is a great way to add stress relief. I've sewn a pocket on the inside of the hoodie to house the battery. Code and Animations Because the LEDs are addressable it is very easy to make...

penny water cooler
thingiverse

I have overclocked the tablet, and even as the battery drains from full to dead in 20 minutes, it doesn't go above 60c, where it was normally around 90c @ stock. Actual picture to come, it looks awesome in real life. The other object is a L298N...

E22 Blaster - 40mm - Kuroi Sabato MOD V3
thingiverse

(printing “windows lock closed “ in transparent material is also an option to illuminate) ps.: magazine port is a good place for batteries... just dont forget to pierce the internal rings (for the cables) BEFORE gluening both body parts togheter). ...

Neopixel MQTT Alarm Clock with Buzzer, RTC, Temperature, Humidity and Pressure sensor
prusaprinters

The clock only checks periodically so alarms may be out by a few seconds - but I can live with that. I have mine set up with a node-red flow that uses Bigtimer to trigger the light, and a delay that then sounds the buzzer 5 minutes later. The...

Mars Base
thingiverse

These vehicles will be battery powered with a maximum range of 400 km and a total speed of 50km/h. The range can be greatly extended if a deployable solar panel or RTG charging unit is brought along. Power The main source of power during the day...