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I do not think so. I had both boards connected to a powered USB hub. Everything else on that hub works fine. 8-Dale

I would like to know what happened too. OK, great. 8-Dale

I did not power the boards before soldering pins to them. From now on, I will. This is the first problem I have had that I could not trace to something I did. I was able to load Circuitpython and Arduino on board #1 and it ran for a little while before it failed. I was never able to load...

I only have what I have already posted - pictures taken with my phone. 8-Dale

So would I. I have 0V on all four pins on both modules. I did not believe this until I took three sets of readings. I wish I had a known good module to compare with. 8-Dale

Yes. With the same exact failure. I understand that. I am not questioning PJRC. There are ways boards can be negatively affected, even in transportation between manufacturer and dstributor. 8-Dale

I have been thinking more about this. It seems strange that two Teensy 4.0 boards from the same vender would have the same exact failure. 8-Dale

Hi, Paul Both boards have the same results - no 3V power, but 5V power at 5.08V. 8-Dale

Teensy 4.0 #1: It looks like I do not have 3V power. I have 5.08V. Teensy 4.0 #2: I do not have 3V power. I have 5.08V. I do not understand this at all. One of my boards was working for awhile, but the other never worked. 8-Dale

There is no activity at all on the Teensy 4.0. No flashing or blinking red LED at all. Both just seem to be "dead" now. Everything looks good to me. No solder splashes, which would be easy to see. No solder bridges, etc. I can not see anything that physical that may cause a problem. I even...

I just did this with one Teensy 4.0, but it still does not respond to attempts to program it. I have good USB data cables. I have not soldered to anything on the underside of either of my Teensy 4.0 boards. 8-Dale

Hi, I have been away for quite awhile but I am back! ;) I just got my first two Teensy 4.0 boards from Adafruit, and I have Circuitpython one one. However, the second one is totally unresponsive. It acts like it is dead, but I do not understand how that can be. All the soldering looks good...

You're doing great work, Kurte! Thanks also goes to Nathan for helping out! :D I'm getting closer and closer to restarting my porting to the Teensy 3.1 now. I now have two robots (W.A.L.T.E.R. 2.0 and the SES Rover) that have RoboClaw 2x5 motor controllers and GHM-04 motors. I am very close to...

Yes, indeed! You, and others there, have done great work on these controllers. I'm going to be taking a closer look at your work as I start my own controller design. It would be really interesting to see what you could do with a Teensy 3.1 in your design. :) 8-Dale

Quick update: I discovered that both motors I have on W.A.L.T.E.R. are apparently bad. :( Luckily, I have two more of these motors, which tested good without encoders, and two brand new quadrature encoders. I've installed the new encoders on both motors, and am just waiting for the motor...

Good find! The LS7766DO also looks very interesting - it handles dual quadrature encoders. I have requested a sample. My robot, W.A.L.T.E.R. has quadrature encoders on both motors, so I have an application for this chip. Update: My sample request has been accepted, and I will be getting two...

I have been working on the pan/tilt scanner code this week. I finally got it all working yesterday! Now, W.A.L.T.E.R. can scan up to a full 180 arc (specified as -90 to +90 or 0 to 180 degrees), and take sensor readings every so many degrees, specified by an increment value. I can specify the...

Compiling without errors, unfortunately, doesn't really tell us too much. For instance, some of the Adafruit libraries compile perfectly with TeensyDuino for the Teensy 3.1, but they give incorrect values, compared to a true blue Arduino board. I am going to look into this once I get my...

You may be mixing two things up here, or at least confusing them a little. :) There are two distinct parts to working with an Arduino/Teensy with TeensyDuino. One is the C/C++ language used to write the code for them. The other is the IDE and build system that actually builds and loads your...

What? Standard C is going to be the same, whether it's on a PC, or on a microcontroller like the Arduino or a Teensy 3.1 (the one I use). Sure, there are things that are going to be different, but these are not difficult to deal with in most cases. Pointers are not going to be handled any...

I've ordered all the things I need to make the changes I've talked about in previous posts. I should have everything by the end of this week. I still have to figure out some sort of adapter, so I can mount the Arduino Mega ADK and shield on the SES Rover. I am excited that I will be able to...

This looks great! :D Oh, wow, awesome! If you decide the version with Arduino headers is good enough, I'd be happy to submit them for fabrication if you get me all the data I ened to do that. I've never submitted boards for production before, so you may have to walk me through the procedure the...

OK, here is my plan to switch processors around on my two robots.. I'm going to create my display and sensor circuit on a Perma-Proto board from Adafruit.This will allow me to use all the parts I need, not have to worry about wires coming loose, and I can put all the inbound connections to the...

I have backed this one, as well. :D 8-Dale

I have both Arduino 1.05, and Arduino 1.5.5 installed on my system now (Linux). I just download the archives from arduino.cc and unarchive them - they automatically go into different directories. I have separate sets of libraries for each version, because the user libraries go into your sketch...

As soon as I have both of my robots fully operational, I'm going to start working on a wireless robot controller. This controller will have at least three 3-axis joysticks (possibly 4), some sliders, hats, and of course several buttons. I'm looking at using this joystick, and hope to get one to...

I'm back to working on W.A.L.T.E.R. now! I ran out of dynamic memory on the processor (BotBoarduino) on my new SES Rover, so am switching things around a bit. The SES Rover: I call it this because it doesn't have a better name yet, and because I built it entirely out of Servo Erector Set parts...

I really appreciate consistancy, Paul! I've had to go through some libraries and rename stuff and such, but it sure makes code easier to understand. :) I'm looking forward to getting one of your audio shields, and some more Teensy 3.1 boards. :) 8-Dale

I am building two low bandwidth, long range, wireless nodes. I've already built one node, using my Arduino Decimila, and am building the second node now, using a Teensy 3.1. I've started working on the Arduino software, and have the initialization code ready to test now. My wireless nodes are...

Yay! I just installed it. :) 8-Dale

Excellent! I also use this feature in my projects. I have both 3.3V and 5V FTDI cables with separated socket pins, which makes it easy to connect to just about anything. 8-Dale

Is there any possibility of using a mini-USB connector instead of the micro-USB connector. Those micro-USB connectors just don't last long with repeated plugging/unplugging. I'm having problems getting two devices charged sometimes, because the micro-USB connectors on the devices won't hold the...

I am starting to design what I hope will be a nice small remote robot controller. I found this 3-Axis joystick w/button at RobotShop. I'm thinking that having two, or maybe even three, of these, along with some sliders, buttons, and a few hats, would make for a great controller. Right now, I'd...

Try the LSM303 library from Adafruit. That's what I have been using for both Arduino and Teensy 3.1, with the standard Wire libraries for both. However, I am not sure it is returning correct results for the Teensy 3.1. My orientation readings (pitch, roll, and heading) aren't correct for the...

I have an LSM303DLHC that is part of the 10DOF IMU Breakout Board from Adafruit. It seems to work fine with the standard Wire library for both regular Arduino and TeensyDuino, although I am still testing this to be sure everything is right. Some of my orientation readings seem to be off with the...

I think I am on the track of a hardware related issue. I've moved everything back over to the Arduino Mega ADK board, and have been playing with it a bit tonight. I have everything working now, except the RoboClaw. When I turn the RoboClaw on, I hear this weird noise from W.A.L.T.E.R.'s...

More pictures of W.A.L.T.E.R. 2.0: The Arduino Mega ADK with the DFRobo Sensor Shield. This is a very nice shield for the Arduino Mega! I have drilled mounting holes for the Mega board and shield, but I don't have the right standoffs to mount them. The display and sensor breadboard. The IMU...

This is why I get frustrated when I am trying to test the Teensy 3.1 on W.A.L.T.E.R. - it's a true wiring nightmare, and a very fragile setup. 8-Dale

I give up for tonight. I'm not getting consistant results from my I2C devices, even after I completely rewired the I2C bus connections (6 physical devices). As far as I can tell, all my connections are correct, including power and ground, but I can't really tell for sure. This setup is way to...

I agree completely! I would much rather have a solution that works well for as many people and platforms as possible. Yes, indeed, this is the whole problem with forking code. If all the issues can be dealt with by merging changes into BMSerial, and Nathan can make sure everything is still...

I decided I want to play with the Teensy 3.1 a bit more tonight, before I move everything back over to the Arduino Mega ADK for awhile. I just have to fix all my jumper wire connections - some always come loose, and keep coming loose, everytime I move W.A.L.T.E.R. It's a real pain! I'll move...

My preference is the best solution that works on all platforms. If this requires forking the Orion libraries and continuing on from there, that is absolutely OK with me. I want a solution that can be easily expanded to work on other future platforms. I tire of proprietary solutions, even if I do...

This makes perfect sense. I normally always do this when I get a new piece of hardware, a new sensor, etc. I guess I've been so anxious and excited wanting to see W.A.L.T.E.R. 2.0 (after about 7 years of building up parts and such) that I just didn't even think about it. I have the newer one...

I'm thinking about going back to my known good environment (Arduino Mega ADK), where everything works, except the RoboClaw (because it is new to me, and I don't yet know how to work it.). I think I need to get it working there and write some code to manipulate it. After I am familiar with how...

I am using the standard Wire library. 8-Dale

I am using the standard Wire library. 8-Dale

Arduino IDE 1.0.5. I just installed TeensyDuino 1.18 RC4. 8-Dale

I have communication on Serial2 (9, 10, 115200, normal SSC-32) and Seria3 (7, 8, 115200, normal RoboClaw), but nothing on Serial (0, 1, Console). I tested by moving my SSC-32 to each port and reprogramming the Teensy 3.1. All this is set in my header file, so it's very easy to switch ports...

I am having problems getting anything from the RoboClaw 2x5. My code just hangs when I go to read the controller. I am checking to make sure I have communication on Serial3 now. I'll move the SSC-32 (works on Serial2, RX 9, TX 10, just fine) over to the RoboClaw port (Serial3, RX 7, TX 8), and...

I just got setup to test these, and am verifying my connections. I am having difficulty with the console and RoboClaw ports for some reason. The SSC-32 is working with the BMSerial port, so I will get the other two sorted out. Yes, this would be the ideal result. 8-Dale