Recent content by John F

Hi Guys, I may never find out why two of my Axe 023 boards failed to drive the servo, despite having done so in the past. But I used an 08m prototyping board to run the servo directly from the chip and that worked fine. An unbuffered chip will be perfectly ok for my project [an autonomous...

Have tried another Picaxe and another 08M2 in this one. Thanks for all your advice which I greatly appreciate. Am going to knock off now and go to bed. Will continue tomorrow.

Any thoughts on how pin 2 could be damaged to the extent it can't support PWM but is still able to support high and low?

I have a continuous rotation servo but it is not rotating. When I program the same Axe 023 board to set pin 2 high it does so and drives a small relay.

I'm not connecting an ESC to a servo. Since ESC's and servos both use PWM for control, when the picaxe failed to drive the ESC, I substituted a servo to try and detect the signal. I have also tested the servo using a RC transmitter and receiver and know it is working.

Hi All, Thanks for the suggestions. I have tested the servo and it works. How do I test the signal to the servo? What I expect is a PWM signal but other than seeing if the servo moves, I don't know to test for it. Erco - are you suggesting I change the test code to read: let dirs =...

I've been using the servo and servopos commands to drive electronic speed controllers. This has worked well. But a couple of days ago it stopped working! Now I can't get even the most simple of code to work on my Axe 023 motor driver boards. For example, I did a very simple test program let...

Tried this but without result: main: high b.1 'push TX speaker out pulsout b.1,200 'generates a 2 ms pulse low b.1 'let speaker resonate at38 khz pulsin b.1,1,b1 if b1>0 and b1 < 10 then high b4 else low b.4 'light comes on if object close end if pause 200 goto main

Thanks for both of these; I really appreciate your help. [Still haven't got it going though.]

They look easy to use but for some reason I can't get mine going. I connected a 2.2 k resistor between echo and trigger and loaded this into an 08M2: let dirs = %00010111 main: ultra c.1, b1 'measure distance if b1> 0 and b1 <10 then high b.4 'led on else low b.4 'led off end if pause 200 '200...

Hi Alan, Thanks for the tip on where to post - much appreciated. I'll probably have to post something soon - so far I have failed even to get an ultrasonic sensor working. Have tried both the 'official' SRF 005 and the 004 Chinese knockoff. Thanks too for the information above on...

I wonder if there is anyone on the forum who has used one? I'd appreciate some advice on how to get one working.

Were you able to get it going with Ultra? It's the ideal sensor for a project I have in mind.