SES Arm with wrist rotate upgrade.
I got the arm a while ago and recently started setting it up. I had a few problems getting it to work, but eventually realized the 9vdc battery I was using was bad. So, now VL does not equal VS1 and I have a brand new 9vdc bat. hooked up to VL.
Baud = 115.2k
TX=RX
I can’t tell if I burned something out, but the problem at the moment is that the base servo rotates all the way to the CCW side when I apply the “ALL=1.5mS” in SSC-32 V1.05 or Lynxterm V1.10 “All=1500”. When I first got it working this morning, the servo centered… now it doesn’t. I assume I changed something, but haven’t got a clue what.
Also, when I got Lynxterm working, I could play with channel 0 and rotate the Base servo, but it didn’t appear to rotate to anything less than 1600 and rotated until maxed out at 2250. A strange quirk is that the servo seems to jump past about 15-20° of rotation around 1600-1700. What I mean by that is I will slowly increment the pulse and the servo will slowly move until it suddenly moves several degrees and then slows down again and resumes making small increments as I increment the signal.
With no Pulse
9vdc battery drop ~ 9.4V
VS1 ~6.93V
VS1=VL ~2.41V (unhooked)
VS2 ~6.93V
Pin 4 Red>Black ~6.93V
Pin 4 Yellow>Black ~0 (no pulse)
I have a green light on my board
With Lynxterm “All=1500”
9vdc battery drop ~ 9.4V
VS1 ~6.90V
VS1=VL ~2.48V (unhooked)
VS2 ~6.90V
Pin 4 Red>Black ~6.90V
Pin 4 Yellow>Black ~0.40 (All=1500)
Green light is off
During these measurements only the Base and Shoulder servos were plugged in.
I haven’t gotten any further than the “Test” in the main SSC-32 screen because I was trying to line everything up when I hit this snag. I’m not very familiar with the software, but I’m quite proficient with computers in general.