Thankyou, someone can label this SOLVED. I build a very small board tonight after work, and it works great. Notes: I tried a big mosfet (I dont remember the number but it was a 20 amp NPN) and it did not work. So without waiting a week for 2N7000, I used NPN BJT BC547B transistor. also a 47K resistor. Thanks again Daveby skippy2235 - Prusa i3 and variants
Thankyou. my issue has been solved here:by skippy2235 - For Sale
Hello again. Here is my understanding of what you are talking about. I watched a youtube video of the 2N7000, and think I get what you are saying. (https://www.youtube.com/watch?v=m1l7TmVZVo4) Attached is the proposed changes to make to the Height sensor. Add a 10K resistor pin 1 to pin 3. Cut trace going to pin 1 and reroute to gate of 2N7000. then get source from pin3 and drain to the other sidby skippy2235 - Prusa i3 and variants
thank you David for your repley I was hopping you would come around. I would love to change the firmware on your sensor. I am not a programer. So could you help me. can you tell me what to change... like what line # to what value. I read all those .cpp files and dont understand them. I have only written 4 simple progams in my life, just getting started. I have programed lots of chips, just usby skippy2235 - Prusa i3 and variants
So I did a temp / maybe perm fix. What I did is quite overkill but works, was to install a Nano as a buffer / inverter. What is happening is that the Zonestar expects to see 5V when the sensor is away. and 0V when near. this switch setup is called normally closed. I wrote a simple code that looks at the input from the sensor. Then puts out a signal that is opposite of what the input is. did soby skippy2235 - Prusa i3 and variants
Hello, I just recived my Mini height sensor board ver 1.2 (https://miscsolutions.wordpress.com/mini-height-sensor-board/) I installed in on my zonestar (RepRap Prusa i3 CLONE) witrh Marlin firmware. So I powered up the sensor and right away, LED come on and flashes 2 times, just like you said it would. All wires are correct. After homing the printer and find that it will not goto Z home. Insteby skippy2235 - Prusa i3 and variants
Hello, and thankyou for building a nice IR end stop soulution. I just recived my Mini height sensor board ver 1.2 I installed in on my zonestar (RepRap Prusa i3 CLONE) witrh Marlin firmware. So I powered up the sensor and right away, LED come on and flashes 2 times, just like you said it would. All wires are correct. After homing the printer and find that it will not goto Z home. Instead it goeby skippy2235 - For Sale