Hi, just do not connect the
Hi, just do not connect the motors for the tracks, and you should be able to figure out the rest from the code examples.
Darn stupid beepity-beepin’ sampler…
BOY that sound sampler beep is annoying. It’s a nice module otherwise, but I see how it’s totally detrimental to this design!
I’m hunting down a replacement ASAP.
Also FYI, the control logic to it is inverted to what the code says. Signal LOW to activate recording / playback, so the code has to be tweaked in a few places.
Regards,
Dave (now purchaser/R&D chief!)
Hello! A beginner here! I am
Hello! A beginner here! I am working on a Fire fighting Robot and completed the navigation test, after that I went on to work on the fan (A motor with a propeller) that would put out the fire, but I couldn’t get it to work; after a little research online, I understood that I required a darlington to make fan work, I did NOT use a Darlington as I “replaced” it with a 330 ohm resistor array to control a servo (which controls the movement of the neck). That’s when I came across Yellow Drum Machine and I noticed how Frits used a L293D to control the Motor which acts as a neck! I decided to implement this Idea in my Robot but it doesn’t seem to work. I used the same Test Code that was Attached. I am unable to figure out what I have NOT done correctly. Can someone please help me out? Thank you! 
Picture
I think you first of all
I think you first of all should try and search for L293D.
If this does not help you, please post a new forum topic about your challenge - and maybe link to this page - but your question does not really belong here, as I can understand it.
Thanks.
Alright, I’ll do
Alright, I’ll do that!
Thanks.
Alternative sound sampler?
Thank you for this great tutorial and fun project
Quick question, has anyone found a suitable alternative to the sound sampler sold at Solarbotics? It’s still the same one that beeps (loudly) when starting/stopping recording. Thought I would check in here before I go shopping again.
Thanx!
Distance Sensor test not working
Hi all - thanx maker!
After 80+ hours of reading, reading; doing and redoing, following one set of plans, then the next and still switching around the wires; checking and rechecking solder points; and testing points with the multimeter - I have finally got all tests working except the HC-SR04 (the rest of the parts are from the Solarbotics kit).
So tired and frustrated BUT not defeated. Haha. I’ve Googled and read dozens (maybe hundreds?) of posts and have come here as a last resort. Didn’t want to bother any of you pros without first doing my screen time.
This is how I have the HC-SR04:
VCC to V
TRIG to I0
ECHO to I1
GRD to G
Help? Thanx
Guessing the code is different…
I think the problem is the code for the SRF05 is different than the code for the SR04? I’ve never worked with coding (other than HTML) so it’s completely foreign to me. I messed around a bit and got the sensor to beep and got it to read (changed w6 to w1) but it wouldn’t do both at the same time.
Ordered the other sensor but I would still like to figure this one out?
Thanx again.
It’s good that you asked this question here, but,
Making a new forum post will probably get more eyes on your question. You don’t mention what microcontroller you are using. From the Solarbotics mention I am guessing you are using a PICAXE board. Which one? You have tried getting a response from your sensor. Can we see the code? I am not fluent in PICAXE BASIC, but, I know enough to be dangerous. 
It is good you tried to solve this on your own. It sounds like you could have stopped in sooner to ask though. Most of us don’t advocate sadism or masochism. 
HC-SR04 vs SRF05 - YDM
Thanx for the super fast reply! Love LMR.
I’m using the Picaxe-28 board and the Picaxe 28x1 IC. The plans for the YDM call for the HC-SRF05 sensor using this as the test code:
------->
symbol trig = 0 ’ Define output pin for Trigger pulse
symbol echo = 1 ’ Define input pin for Echo pulse
symbol range = w6 ’ 16 bit word variable for range
Symbol pinSC_beep = 0
puls:
high portc trig
pause 10
low portc trig
pulsin echo,1,range ’ measures the range in 10uS steps
debug
if range < 128 then
sound pinSC_beep,(range,1) low pinSC_beep
endif
goto puls
<-------
I was trying to use the HC-SR04 with that code. No worky. However, when I changed the symbol range to =w1 I was able to get some numbers scrolling in the debug window.
I tested the HR-SR04 using code written for it (changing the trig and echo to 0 and 1) and the speaker started giving me single, consistant beeps but no scrolling numbers in the debug window:
------->
symbol trig = 3 ‘ Define output pin for Trigger pulse
symbol echo = 6 ‘ Define input pin for Echo pulse
symbol range = w1 ‘ 16 bit word variable for range
main:
pulsout trig,2 ‘ produce 20uS trigger pulse (must be minimum of 10uS)
pulsin echo,1,range ‘ measures the range in 10uS steps
pause 10 ‘ recharge period after ranging completes
‘ now convert range to cm (divide by 5.8) or inches (divide by 14.8)
‘ as picaxe cannot use 5.8, multiply by 10 then divide by 58 instead
let range = range * 10 / 58 ‘ multiply by 10 then divide by 58
debug range ‘ display range via debug command
goto main ‘ and around forever
<-------
I finally ordered the HC-SRF05 but I sure would like to figure this out. Call me stubborn.
You are positive about the chip being a 28x1?
I read the page about HIGH portc, and, it was mentioned that if you are using a newer chip, you should instead use HIGH C.2 (or what ever pin number you want to make HIGH).
I still maintain a stand alone forum post will get you more eyes on your problem than posting this problem here. I am one guy and there are 10000+ visitors here daily. There are many active members that might be able to help you get this sorted otherwise.
I notice in your first batch of code you have a debug statement, and, you mention when you change w6 to w1 you get numbers. What numbers do you get? How close to the sensor do you have to be to get a 127 or less to show up?
Arduino YDM?
Anyone know whether or not the Picaxe code can be ported to the Arduino platform? I’m still quite new to this, and am trying to learn on my own, but I think it’s way over my head to try to convert the original code to something that would be compatible with the Arduino Uno
This is quite a challenge of
This is quite a challenge of a robot to build in the first place. And the programming is quite ‘untraditional’ in order to make the robot do what appears like multi tasking and beat syncing.
Translating to Arduino will be very hard. You’d have to be experienced enough with Arduino, and in general talented enough to start from scratch and make your own.
That being said, it can be done, Dan (‘TheCowGod’ at LMR) did a nice Arduino version of the project.
But it’s NOT a beginners project. Not!!
did you ever figure this out?
Hello:
I had the same problem. When I ran the code to test the sampler board, I made it work by switching “high” to “low” and “low” to “high” in the appropriate places. But I would then have to do the same in the main code and also change the bits in the words of the various songs. I think I will just put inverters on the lines feeding the sampler board-then the code doesn’t have to be changed.
How did you solve it?
George Gillson
Calgary, Alberta
L293D wiring error for YDM neck motor
If you are using a L293D motor driver chip anywhere, make sure that you don’t leave pin 8 floating! I followed the instructions to wire a L293D external to the PICAXE board, to drive the neck motor for a YDM, as per the instructions, but there was no mention of tying pin 8 to V+. If pin 8 floats you only get a bit of current through the motor, enough to swivel the head just a few degrees to either side. The YDM will still navigate, but doesn’t snake in properly. With pin 8 tied to V+ you get the proper, rapid “glances” side to side, at least 45 degrees each way.
Interesting, thank you!
Interesting, thank you!