sbkirby

I've created the STL files for a 4" Threaded Mount for a RPi HQ Camera Module. The files also include a domed cover to fit on top of the mount. All these files are available at https://www.thingiverse.com/thing:4659815

Thank you. After scanning the specifications on the MPX5100DP, it appears this sensor is good for positive 0-100kPa. I didn't see anything indicating it could measure vacuum. There are several sensors in the market capable of measuring vacuum...I chose one that was cheap and readily available (MD-PS002 Vacuum Sensor). This project could work with any vacuum sensor, but the circuitry and software might need to be modified. Good luck interbus57.

Great Job!!

Good point, JeanP27...I don't see why you couldn't use a 18650 Battery Shields for this project.

VCC is the output of the on-board Voltage regulator of the Pro Mini. You should only connect a regulated supply Voltage to VCC; 5V for a 5V board (3.3V for a 3.3V board).To power a Pro Mini directly from a battery, you should connect the battery +V to the RAW pin. The RAW pin is the input to the on-board regulator. You can connect up to 12V to the RAW pin and VCC will remain at a constant voltage, until the input Voltage falls below VCC + the regulator drop out voltage.It looks redundant to use the Powerboost regulated output to the input of another voltage regulator on the Pro Mini board, but the Powerboost provides a great charging circuit for the lithium battery.To answer your question...Yes, you can connect the output of a regulated ac/dc wall adaptor to VCC, but NO I wouldn't do it…

VCC is the output of the on-board Voltage regulator of the Pro Mini. You should only connect a regulated supply Voltage to VCC; 5V for a 5V board (3.3V for a 3.3V board).To power a Pro Mini directly from a battery, you should connect the battery +V to the RAW pin. The RAW pin is the input to the on-board regulator. You can connect up to 12V to the RAW pin and VCC will remain at a constant voltage, until the input Voltage falls below VCC + the regulator drop out voltage.It looks redundant to use the Powerboost regulated output to the input of another voltage regulator on the Pro Mini board, but the Powerboost provides a great charging circuit for the lithium battery.To answer your question...Yes, you can connect the output of a regulated ac/dc wall adaptor to VCC, but NO I wouldn't do it because connecting to RAW provides voltage regulation and some filtering.

Look at my answer to eforster6's statement.

Thank you very much.

Download my data.h file, and replace Adafruit's file with mine. Recompile the sketch, and the flame should be right side up.

Thanks Bill. Yes, all of the drawings are SketchUp. I still use SketchUp for illustrations such as this, but prefer to use Fusion 360 for all of my design work these days.

The angle grinder will remove material when the lathe is running in forward or reverse. The Homestead Craftsman was running his lathe in the forward direction, and getting satisfactory results with the King Arthur's Tools 45822 Lancelot 22 tooth cutter. I ran my lathe at ~650 RPM in reverse, which is the speed and direction recommended by Viel (the manufacturer of the cutter). The angle grinder is running at 11,000 RPM (unloaded), which is fast enough to handle either direction.

There was photo in Step 3 (which is less obscure now) that shows the nylon straps and the bolt on the bottom of the assembly. The straps secure the grinder in the cradle assembly, and the bolt firmly fastens the grinder to the base. The bolt prevents the grinder from twisting or moving around on the cradle assembly. The size of the nylon straps could be made larger. Thanks for your comment.

Good points...However, you missed the cover I currently use on the grinder. I moved some photos around in "Step 4: Follower and Depth of Cut Turret Assembly", and it is much easier to spot. I shot most of these photos over a period of three or four years, so most of the photos don't show the cover.

Great job!

I originally used PCBWay.com, and had great success and fast service. Recently, they charged me $5 for 10 PCBs plus shipping. You might try https://jlcpcb.com/ they have 10 pcb for $2 plus shipping. Pricing is very competitive these days.

Thank you!

There's a link in the Parts list to Lumiere Candles Inc.. These cylinders are made of a resin plastic with a matte finish. The look and feel of these are very much like real candles. It can worked like cast acrylic plastic, and I found it easy to mill on my CNC. Yes, several of these parts are expensive, especially the 6" H x 3" OD cylinder.I don't have a video of it in a dark room, but the amount of light generated by the LED Candle is comparable to real candle of the same size. The small LED's on the power supply are noticeable through the cylinder in a dark room.

Nice design and more like "My New Flame".

I purchased the lasers at Aliexpress:[https://www.aliexpress.com/item/Red-Line-Laser-Module-5mW-650nm-Focus-Adjustable-Laser-Head-5V-Industrial-Grade/32915484279.html](https://www.aliexpress.com/item/Red-Line-Laser-Module-5mW-650nm-Focus-Adjustable-Laser-Head-5V-Industrial-Grade/32915484279.html)The rocker switch was purchased at Banggood:[https://www.banggood.com/20pcs-250V-3A-Mini-Boat-Rocker-Switch-2-Pin-Plastic-Button-ONOff-SPST-p-1044250.html](https://www.banggood.com/20pcs-250V-3A-Mini-Boat-Rocker-Switch-2-Pin-Plastic-Button-ONOff-SPST-p-1044250.html)

Thanks! I used Fusion 360.

Absolutely, you can use any circuitry you wish to supplying 5 VDC to the lasers. I used the PowerBoost voltage regulator to boost my 3.7 VDC Li-Ion rechargeable battery to a 5 VDC output. The PowerBoost also provided low battery protection for Li-Ion battery. Your suggestion a 5 VDC cell phone charger is a simple and great idea.

I've added an image to Step #5 which illustrates the principle of operation. The cross-hairs will indicate where the drill bit will contact the work piece regardless of the table height. As seen in the illustration, the laser lines form two vertically aligned intersecting planes where the intersection corresponds to the center line of the drill chuck.

The first step of the calibration procedure is to align the Laser line vertically for each laser. As a result, the Laser Guides are good for all levels of the Drill Press Table.

The first calibration of the lasers is to align each laser lines (planes) vertically. The next step is to intersect these lines (planes) to the center line of the drill tip. These vertical intersecting planes (lines) are in the same spot regardless of the table height or distance from the chuck.It's hard to beat how well this makes drilling holes with Forstner Bits (or other large tool) when the bit obscures the spot to drill.

I purchase resistors, transistors, capacitors, inductors and LED assorted kits for a few dollars from ebay, aliexpress, banggood or amazon. For specialty items, I go to Digi-Key.

Also, you need to do the following:sudo apt-get install python-smbus python3-smbus python-dev python3-dev python-numpy

I apologize for the error. The "from ListSelector import ListSelector" line should be removed from vac_sensor.py. Either manually remove the line, or download the edited version of vac_sensor.py from above.Merry Christmas

If you refer to Figure #2 Part B, I glued a 20-22mm thick piece of rubber between the two adapter plates (A and C) as a shock absorber between the sliding plate (#108 in Figure #1), which the upper wheel is attached to, and the load-cell.This model bandsaw has a brush to remove saw dust from each wheel, therefore, I haven't noticed any significant changes in force while the saw is in operation. Thanks for asking.

The UNO will not work. The YUN has Linux and WIFI, which are both required for this project.