* D47-D54 any diode >= 1A should do (eg. SMB SS24, ES2J or SMA or throughole: 1n4007, BY399)

** I have some MO16LV

** L293D : 600mA per channel, but strong flyback diodes inside the DIP IC

** L293 or SN754410NE are rated 1A, but external flyback diodes recommended for inductive loads (not needed for LEDs)

** 2 diodes per stepper output if used a'la "full-bridge" for stepper motor

** or 1 diode for each output if activating some normal "unidir" load, as on the Relay subpage of [Rescuekit]

** higher than 1A / output possible via some addon, like L298 if (really) needed. However, when adding more power-outputs, it makes sense to keep stepper outputs standard, and utilize (with PFETs, NFETs or push-pull) 4 of the 7 internally available signals first (2 from p259, 3 from s259 and 2 from AVR). This is getting common (via flying-loom EC10 through frontplate or endplate) with the many V8 (especially with the quad-Vanos BMW S65 and similar engines)

* which stepper chip is installed in the v3 have ?

* what load(s) driven ?

** measured resistance of these loads ?