I’ve just spotted the MeArm Robot Arm while browsing the interwebs. Looks interesting. A few servo motors and a driver board in addition to the various parts. The whole thing is open-source so it could be worth grabbing the files and trying out. I might need some more powerful servos than the cheaper plastic-geared ones that I’ve been buying.
I often find that I’m having to jump around between Scratch, Python and PICAXE Basic. It’s quite easy to get tangled with the different structures – I keep putting in a # for a PICAXE comment, and the odd colon here and there. Colons in PICAXE are used for labels, not at the end of looping and conditional branches. So… here’s a quick chart which also covers some GPIO stuff.