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Good stuff and just what I was looking for. Ordered the ESP8285 without really knowing what I was doing, should have came here first. Had the Teensy on my mind as I was already using one in my present setup. The heater has a safety feature that uses a pressure switch to confirm the forced air...

Thanks, that little tidbit will give me something to start looking into. Just ordered the Teensys today and will be a little while before I can start playing.

I need to monitor the temperature in my shop via a network connection of some kind. The heater will sometimes quit due to a design flaw and I need to know if the shop temperature drops below 40 degrees so I can go out and reset the heater. Shop has plumbing and I do not want it to ever freeze. I...

In the meantime I have the remote temperature monitor working from my shop in it's rough state. Have an application running on the shop computer that checks the Teensy every 1/2 hour and if the temperature drops below 50 degrees it will send me an email. I also wrote a small app that I can run...

Was fairly easy, have the app for the shop computer working pretty good. Also added a network socket so I could tell it to send an email with the temperature anytime I wanted to check it. Just need to write a small app that will send it the command. After all that I discovered this retro fit...

That would be really cool but the furnace is old and the only way to relight the pilot is turning the gas valve to Pilot and holding a button in. It always lights and stays lit really easy which tells me the thermocouple is probably good. Not real sure why it goes out, seems to be random and not...

Thinking as I type... I'm having an issue with the furnace in my shop and when it's cold I may not go out there for several days at a time. Once in a while the pilot light in the furnace will go out, thermostat is telling the furnace to turn on the heat which turns on the blower but with the...

That didn't help.. Oh well now that I'm past the compile error on to my new project.

Well durn, Downloaded and installed the latest version of FireFox and did a Refresh to set everything back to the default settings and still do not have the edit buttons. Only left is to try a restart with add in's disabled.

That fixed it.. I had previously downloaded the latest versions of Arduino and Teensy for another computer but never updated this one. Thanks a bunch... Now if I could just figure out why the formatting links are not showing on this forum in FireFox I would be good. Pretty sure I am running the...

Ya, 1.6.11, I'll update and see how it goes..I'm one of those that doesn't update software unless I have a problem that needs fixing. Too many times an update has caused me more grief than help :) Thanks

Merry Christmas.... Teensy 2.0 on XP computer trying to compile the sample code from the analog temperature monitor. void setup() { Serial.begin(38400); } float code; float celsius; float fahrenheit; void loop() { code = analogRead(1); celsius = 25 +...

The dump idea was my first thoughts and a quick search pointed me to the Pi. Remembering I had the EeeBox (old man with a bad memory) changed everything. Got on eBay and found a 9" monitor for $50.00 and an 11" keyboard for less than $10.00. A used wireless router I have laying around and not...

Thanks for all the great info, you reminded me of an Asus EeeBox computer I forgot I had. It has Windows 7 installed and with a small keyboard and display would not have a much larger foot print than a Pi. Off to eBay and see what is available.

I develop Teensy code on my office desktop but run it on Teensy 2.0s located out the shop driving stepper motors. I usually lug a laptop out to the shop but really do not have room even for a laptop. I heard/read a Raspberry pi can be used to program a Teensy but never messed with a Raspberry pi...

Thanks for taking the time to reply to this thread gang. I have given up trying to do a keypad interrupt on this project. Return on investment (time) simply didn't work out to make it worth it. The keypad issue only effects the motion when it's free running and really isn't anything I can't live...

Pretty happy with the way my stepper motor powered X axis on my mini mill is now working. Thought I would go ahead and show my code. Not the most experienced coder in the world but it works. Still plan on making a video of it operating but that will need to wait till I get it packaged and finish...

Thanks, must be something in my FireFox settings or add ons . If I ever figure it out I will update this thread.

Anyone else having an issue with FireFox where the vBulletin formating icons are not showing when posting a message. I just updated FireFox to be sure I had the latest version which didn't fix it. I am using Opera to post this and the icons are showing as they should. Just to clear up any...

Thanks, doesn't really matter if it's been programmed before in this case, just want ro check to make sure the EEPROM has the values stored the program can save before it reads the EEPROM on startup. Probably could store some number to a specific location when any data is saved and have the...

I need to determine if the EEPROM on the Teensy 2.0 has been programmed or not. If I read a random address on a virgin Teensy 2.0 I get 255. Can I assume if I haven't written to that address yet it will always return 255?

Guess I'll have to dig into the library code and see if I can figure out what it does with the keypad pins, build up a test board and start playing to see if I can make it work. The diode you are talking about with the low voltage drop is a Schottky, useful in many switching applications.

Did find a few references to using diodes to an interrupt pin but not much detail. I understand the diodes but not sure how the keypad library works. Like do I need to do anything other than add the diodes. Does the keypad library provide the low-high transition for the irq pin and will GetKey...

Still working on my Teensy 2.0 stepper motor project. I am using a 4x4 keypad for input and have noticed an issue when running the stepper a step at a time in the Loop() code. Using the Keypad library and normal keypad.getKey(); in the Loop(). This creates a delay in the loop while it is...

This morning I had a choice, I could go to the shop and deal with my way out of tram mini mill, (major project) or set on my computer and try to get a handle on the calculations I need in my stepper code. Decided to set at the computer and finally came up with what I needed. This controls the...

Thanks a million, hate to have someone else do my work for me but for some reason that has never happened before I was really having a hard time with this. Now I get it... Once I get my act together I'm going to try to make a video and upload it to YouTube. That should be fun and a project in...

Ya been researching this whole project, among other things discovered I should be using micros() instead of a loop delay. Still hung up on the math. For some reason just can't seem to grab the concept, maybe getting old is effecting my mind more than I thought. Everything seems to be getting...

This is still in R&D and research for a project I started in this thread. https://forum.pjrc.com/threads/45616-Driving-SLA7062M-Stepper-motor-controler. I have it working but not quite ready to post details, would like to have more meaningful data entered instead of the numbers I am using just...

Actually it should be linear using a stepper motor driving a lead screw. I suspect the variable will be the Teensy loop delay but for this operation close will be good enough. Thanks for the post, will try to get my head around what you posted and come up with a conversion I can use in the...

Brain isn't working really well trying to figure this out. I have determined that a 600 microsecond delay in a loop will move the lead screw on my mill at 11.8 inches per minute. How do I calculate what 10 inches per minute would be in microseconds for the delay? Thanks

Way back when before LED's I designed a 3 channel color organ using triacs driven with home made opto isolators. Basically a small incandescent bulb and a photo cell in a small enclosure. The bulb was driven by the output of an audio amp through filters to separate the audio into 3 frequency...

Thanks, After thinking about this decided to take the easy route. This project is for a mini mill and the odds of ever needing a number larger than 9.999 are pretty slim. I changed the display to one 4 digit numeric plus one 4 digit alphanumeric, Numeric will display numbers and Alpha will...

Wondering if anyone has combined two of the 4 digit 7 segment Adafruit displays with Backpacks to build an 8 digit numeric display. The Adafruit library doesn't directly support this configuration for an 8 digit display. What I really need is the code that handles writing the digits in the...

Will do. About have the mill back together, waiting for a friend to stop by and help me move it back over to it's home bench. Even in pieces two of the pieces weigh more than I do :) once I get it moved I can finish putting it together, I need it working to make the mount and drive connection...

It works, sorta... Started with the basic motor functions. I can enter a speed on the keypad and the motor will run at that speed. Right now it's just numbers that sets the value of the delayMicroseconds() call in the loop. Discovered I can go from 600 to 9999 with the motor I am using...

Thanks, already have that pin commented in the code.

Data sheet for Stepper IC says to leave an output pin open if not used. I have this pin connected to a pin on the Teensy 2.0 in case I decide down the road it would be useful. The question is what would be the best thing to do with the pin on the Teensy? Not define it at all or set it to an...

Teensy 2.0, Should have done more research I was not aware of the built in eeprom, will fit my needs perfectly. Thanks

Seeing the thread on reading an I2c eeprom gave me the idea of using a eeprom to store data on my stepper motor controller. I will be using an Adafruit 8 digit LED I2c numeric display which uses two addresses and the Adafruit display library. Wondering if I can hang a 24C256 I2c eeprom on the...

Just updated the image in the above link to what I believe is the final version. I updated it for a 4x4 keypad to have a few more buttons and fixed a few issues discovered when double checking the connections. Also added a jumper to disconnect power from the Teensy when it is connected to the...

Well I have the circuit board finished, I think.. Still need to double check everything before I actually order the boards. Basically followed the schematic from the data sheet, ran every control wire for the stepper IC to the Teensy which will give complete control from the Teensy. Added...

The motors I have came from Hobby CNC years ago. Not sure exactly what they are, from what I could find they may be NEMA23's. 3.6VDC 2AMP 127 OZ-IN. Thought when I get my test setup working I could tell if they were going to be big enough for the mill. Appreciate the links will give me a...

Thanks, been doing a little research and right now the biggest issue is laying out a circuit board. I use Express PCB software for allot of reasons and have not been able to locate a board component for the IC. It's fairly easy to create a component in Express but was hoping I didn't have to. I...

Hi folks, been a while.. Have this idea of building a Stepper motor controller for the Y axis on my Mini Mill using a Teensy driving a SLA7062M Stepper IC. Reason for the SLA7062 is because several years ago I purchased a CNC kit to build a CNC router which never happened. That kit has 3 stepper...

The adafruit backpacks do have address jumpers. Does this mean I just hook both to the same set of pins and access the displays via address in the code? I should have continued reading.. https://learn.adafruit.com/adafruit-led-backpack/connecting-multiple-backpacks This leaves the question of...

This is the first step in developing a number display from a keypad using a Teensy 2.0, connecting the hardware. Basically it will eventually display four(4) two digit numbers on two 4 digit displays. Know the 4X3 keypad will need 7 pins and from what I understand they can be just about any of...

Went with two Adafruit displays with i2C backpacks and a 4 X 3 keypad. Displays and keypad arrived yesterday. Have Teensy 2.0s from my business projects. Keypad seems pretty easy by following the Keypad Library tutorial on the PJRC site but looks like I will need to do some porting from the...

Great info, thanks a million.. The 4 digit display might work OK by using two. I will see if he really needs a space between the numbers. Gives me a great place to start, thanks again..

Have a friend that has asked if I could... Build him an LED numeric display controlled by a simple keypad. The display would consist of eight(8) digits arraigned in twos with a space between like this.. xx xx xx xx Thinking of using dual digit displays like this...

Thanks for the input guys. I'll have to get some BCD switches before I actually see how all this will come together. I wouldn't be against going to a Teensy 3.2 just for this application but if I can would like to stay with the 2.0. I usually order 5 or more at a time and use it in several other...