author
5CommentsJoined January 9th, 2017

Tell us about yourself!

Complete Your Profile
  • WSPR (Weak Signal Propagation Reporter) Stand Alone Beacon

    Hello Dave,How about posting your software on github.com?For example see my documentation for a Python software:https://github.com/rudi48/dso150-110-plotPlotting the data of a cheap digital scope JYE Tech DSO150,usable on Linux, Mac OS and Windows.73, Rudi DL5FA

    View Instructable »
  • rudi48 made the instructable Single Cylinder Air Engine1 year ago
    Single Cylinder Air Engine

    Hello gzumwalt,I made the Air-Engine. My 3D printer is a psusa i3 clone.Thank you very much for the nice design.I could run the engine a few turns by blowing very strong in the Adapter-balloon, while holding the engine with the Wheel-piston down. The Wheel-piston must bei in the 2 o'clock position at start, looking at the front side.With a balloon I did not got it to work.Several things must be modified to make it work:1. The piston was about 0.3 mm x 0.3 mm too large. Fortunately I had a mill to fix it.2. The piston-rod was in one direction 0.3 mm too thick3. The pins dit not fit, I need to use metal screws.4. I needed to put some tape at the Cylinder to base connection.5. The base with your parameters need 6 h 3 min to print. I reduced to 0.2 mm layer thickness and 20% fill. Then the...

    see more »

    Hello gzumwalt,I made the Air-Engine. My 3D printer is a psusa i3 clone.Thank you very much for the nice design.I could run the engine a few turns by blowing very strong in the Adapter-balloon, while holding the engine with the Wheel-piston down. The Wheel-piston must bei in the 2 o'clock position at start, looking at the front side.With a balloon I did not got it to work.Several things must be modified to make it work:1. The piston was about 0.3 mm x 0.3 mm too large. Fortunately I had a mill to fix it.2. The piston-rod was in one direction 0.3 mm too thick3. The pins dit not fit, I need to use metal screws.4. I needed to put some tape at the Cylinder to base connection.5. The base with your parameters need 6 h 3 min to print. I reduced to 0.2 mm layer thickness and 20% fill. Then the print time was reduced to 2 h 26 min, and it was solid enough.Regards, Rudi48

    View Instructable »
  • rudi48 commented on Aoshido's instructable DVD to Laser Engraver1 year ago
    DVD to Laser Engraver

    Hello Aoshido, I have questions to the home switches:1. Are they are on position to X = Y = 0 mm?2. What coordinate system you are using, +X, +Y; or -X, -Y ?3. Have you already upgraded to grbl version 1.1e? If yes, how does your config data look like?

    View Instructable »
  • rudi48 commented on ehsmaes's instructable Motorize IoT with ESP82661 year ago
    Motorize IoT with ESP8266

    Hello ehsmaes, thank you very much for your detailed answer. To me it looks like, that we have different shield versions. I am feeding the motor supply voltage with an external power supply. In the meanwhile I have ordered a motor shield for Arduino from Adafruit. That works fine, and has good software support.

    View Instructable »
  • rudi48 commented on ehsmaes's instructable Motorize IoT with ESP82661 year ago
    Motorize IoT with ESP8266

    Hello ehsmaes,I have tried to use the ESP-12 motor shield with a bipolar stepper motor, as you described.To my surprise I found out, that the motor drive signals are routes in a way, that it is impossible to drive a bipolar stepper motor. My signal measurements:Mapping NodeMCU to ESP-12 motor shield and driver ICNodeMCU J2 m.-shield L293DD pinpin2 D1 GPIO5 PWMA Enable1 1pin3 D2 GPIO4 PWMB Enable2 11pin4 D3 GPIO0 DA Input1 2 Direction Apin5 D4 GPIO2 DB Input3 12 Direction BI have not found any possibility to control Input-2 and Input-4.In your program "stepper.lua" there is the definition:-- nodemcu pins: 0 5 6 7Are that the Dx or GPIOx numbers?Could you please tell, if you have an other ESP-12 motor shield,or did you make...

    see more »

    Hello ehsmaes,I have tried to use the ESP-12 motor shield with a bipolar stepper motor, as you described.To my surprise I found out, that the motor drive signals are routes in a way, that it is impossible to drive a bipolar stepper motor. My signal measurements:Mapping NodeMCU to ESP-12 motor shield and driver ICNodeMCU J2 m.-shield L293DD pinpin2 D1 GPIO5 PWMA Enable1 1pin3 D2 GPIO4 PWMB Enable2 11pin4 D3 GPIO0 DA Input1 2 Direction Apin5 D4 GPIO2 DB Input3 12 Direction BI have not found any possibility to control Input-2 and Input-4.In your program "stepper.lua" there is the definition:-- nodemcu pins: 0 5 6 7Are that the Dx or GPIOx numbers?Could you please tell, if you have an other ESP-12 motor shield,or did you make some rewiring, or I am totally confused?Regards, rudi48

    View Instructable »