Mini-zip V3 Upgrade.


By the way, did it ever occur to you that the issues you are experiencing with the V4 aren't power related at all? Have you changed your code from the V3 version to V4 version in ez builder?... There will need to be subtle changes to your project code to go from the EZB3 to the EZB4.... For one thing servo positions for the V4 are 0 to 180 whereas on the V3 are 0 to 100.... I also mentioned those mini servos work on a max of 6 volts so if you are running the EZB4 with 7.4v then your mini servos won't tolerated that much voltage... They will not work properly.... Remember whatever you plug in to the EZB4 board gets the same voltage as your battery.... Something to remember when you plug 5v sensors (like pings) directly into the ezb4 board....





Will make new mini-zip for v4 and give it a try.



Its the V4, If you look at the board, the etched power line are way too thin to handle the amps. Im going to bypass the v4 for power by using a breaker box for the power to the servos and the logic wire to the v4. Hopfully this will work. Had the same issue with the XLR-6.


What amps Anthony? Do you in fact have the data sheet on how much power they can handle? I don't have the answer either... But they obviously can handle the heavy duty servos in the store here (which are included in JD and Six).... I can personally confirm that they can handle a hitec HS-805MG giant sized servo fully locked (accidently locked, wasn't done on purpose)....which is surely drawing more power off of one pin than all the servos on the OPs mini zip combined....


Hey guys,

Figured I'd step in and mention that @Richard R is correct. The power that is distributed from the battery goes through a short circuit protection fuse, then a large Polyfuse and a reverse polarity protection diode and after that it goes directly through the board to the servos. This is what we label as Vin power.

Vcc power is regulated 3.3VDC from the on board power supply and does not go to the servo (digital) headers.

The v4 is rated to handle 5 Amps continuously going through the traces on the board with spikes up to 20 Amps. The traces are actually quite thick and are rated to handle more than that amount of current. If they weren't rated for that current they would instantly burn up. Remember as @Richard R mentioned we are using 12 heavy duty servos with Six.

If anyone wants to send me their wiring diagram or a picture of their setup I can help you figure out the issues you may be having (just use the Contact Us page). Or just post detailed information to the forums and everyone can help.


Maybe it that little Barrel plug adapter that is used at the base of the V4. I don't think it's rated to handle 20 peak amps. It may just do the 5 that's the V4's pass through voltage circuit is rated to handle.



thanks for the info.

I found the problem it is in auto position control. Working on setting up new auto position control and started new project.



@jdebay... Wasn't trying to make you feel dumb or wrong... If I did, I apologise... Possibly I am a bit too passionate about the v4 and sometimes I let it get my panties in a bunch.... Anyway, glad you worked it out...

@Jeremie... I appreciate you helping me out here....


@Richard R @Jeremie

I love the V4 too, AND LOVE EZ-ROBOT, but THE V4 is resetting... which makes mini-zip act funny. LOL

I made new project only auto position control only one frame and only one action. RESET

I removed barrel plug, RESET

I removed power SHELL part, RESET

Not sure what to do next?



Hi @jdebay

I understand you are using many servos on your mini-zip, what are you using as the battery supply?