All Community Content

Question About Digital Port Limits Re Leds.

Howdy, EZers! So, I'm putting together an IR emitter for one of my projects, and I think I've got it all within safe limits, but I wanted to run it past y'all just incase... The circuit is as follows... +5v ---- |>|---|>|---|>|----///---GND D0 ------L1----L2-----L3-----R1----GND Where: L1,L2,L3 are IR Leds, with a 1.2v forward voltage,...

Help With Syntax To Call Ez_B.Dll Functions (Python)

Hi, I've tried all sensible combinations I can think of to call EZ_B.dll functions in Python. I know if I can get the syntax right for one, the rest will follow. Any suggestion appreciated. David. ------------------------ from ctypes import * > libEZB = CDLL("C:\Documents and Settings\David\My Documents\EZ-SDK\DLL\EZ_B.dll") >...

Ez-B And L298 Motor Control

I have hooked everything up as per your tutorial. My goal was to control 2 motors independently. Currently I can only run the 2 motors simultaneously. I want the choice to run each motor forward or reverse without affecting the other. My speed control is working as required (1 channel controls the speed for both motors) Can anyone send me a diagram...

Sabertooth Battery

i need to get a battery for a sabertooth 2x12. i wanted to know what other roboteers have used. this is whats in the downloadable pdf. Input voltage: 6-24V nominal, 30V absolute max. Output current: Up to 12A continuous per channel. Peak loads may be up to 25A per channel for a few seconds. These ratings are for input voltages up to 18v in still...

Wrist Ideas

Hey everyone. I have been in hardware mode right now, but have been creeping the forum.. eek I am building a humanoid type of bot. Its just from the wast up type of thing. with two arms and two different hands. It will have some type of head also. Right now I am working out a BOM for the arms and I have gotten the shoulder and elbow joints figured...

Stating The Time

Tidied up the time routine a bit to include AM and PM and some other stuff... Enjoy! #________________________________________________ Print ("+---------------------+") Print ("| Announcing the time |") Print ("+---------------------+") # say("The time is ") IF ($hour>12) $hour_word=$hour-12...

Block User Feature For Forum?

DJ, Is there anyway to add a block user/ignore posts feature to your forum? I know it's your own code, so you must be able to customize? I'm sure myself and a few others have a few people we would like to erase out of our lives. There is a disruptive force on this forum that needs to go away.

H-Bridge Details

Hi, Can someone please point me to a detailed spec sheet for the 2.5A H-Bridge that is sold on this site's Store? I read and watched the tutorial but I have more questions. Also, does anyone know what the IN1-IN4 pins are for, exactly? Why do we need 4 digital signals for 2 motors? Perhaps forward and reverse for each? Thanks, Mike

2.5 Amp Motor Controller

hi i have a h-bridge question fist i did all the wiring https://synthiam.com/Tutorials/Hardware.aspx?id=25 here i installed h-bridge like in the tutorial 1) Connect L298 VCC to your battery supply positive 2) Connect L298 GND to your battery supply negative 3) Connect L298 +5 to a +5 pin on the EZ-B (in the diagram I used +5 from Pin D0) 4) Connect...