Here is another parts post for a 12V @2A switching power supply. This unit is small and has an aluminum case with cutouts for mounting. I used this power supply in my Reflow Controller project. You can find it on ebay here (link will expire) or search for a DC 12V 2A Switching Power Supply Regulated. You will more than likely get multiple results.
Most of my projects require some type of power source. Now, I could go the DIY route and build my own power supply or I can do a search on ebay and find what I am looking for already finished and ready to go. Here we have a Minghuada MHD-10VA switching power supply that accepts 110-220VAC and outputs 5V @2A. This unit is small and has an aluminum case with cutouts for mounting. You can find it on ebay here (link will expire) or search for a DC 5V 2A Switching Power Supply Regulated. You will more than likely get multiple results.
Day 3 of the build went somewhat quicker than day 2. I got the machine fully assembled and operational (minus adjustments). Go here to read about the ongoing build and take a look at some pictures along the way.
Day 2 of the build is a wrap. I got more accomplished today than I thought I would be able to do. I managed to unwrap and inspect the remainder of the parts in addition to assembling the gantry and the base. Go here to read about the ongoing build and take a look at some pictures along the way.
A while ago I decided to start designing my circuits using Surface Mount Devices (SMD). There are many advantages to using SMD components over through-hole components. Some of the major advantages are size and cost. The smaller size means I can make the circuit boards smaller. In addition, smaller components and smaller circuit boards means lower costs. One of the disadvantages to SMD components is they are more difficult to solder than through-hole components. The solution is to use what is called a reflow oven. The following project details how I designed and built a reflow controller based on a MAX6675 Thermocouple interface and use it to control a common toaster oven in order to reflow surface mount circuits. Check out the project here.
I designed a breakout board for the Sensirion SHT1x Humidity and Temperature Sensors. The SHT1x family of sensors can measure relative humidity, temperature Celsius and temperature Fahrenheit. My plans are to use the design for various heating and control projects such as a wireless thermostat, greenhouse controller and some environmental projects. The project link details a SHT15 but, any of the sensors that share a common footprint can be used with the breakout board. I also developed (modified) an Arduino library for use with the Sensirion sensors. Check out the project here.
Today I managed to gather enough nerve to purchase a FireBall V90 CNC machine with all the bells and whistles from Probotix for under $2000. The V90 has the following features:
- Approximately 12″ x 18″
- Thomson precision linear shafts
- Oilite bearings
- Precision Acme 2-start lead screws
- Anti-backlash drive nuts
- CNC USB controller and software
- Aluminum T-slot extrusion spoil board
- Bosh Colt PR20EVSK Router and holder
- MeshCam software
- 3-Axis ProboStep Motor/Driver Kit
- 40 VDC Linear RTR power supply
- Larger enclosure for power supply and motor controllers
- 220 in/min rapids
The machine is supported by the FireBall CNC Yahoo Group.