Has anyone made a wireless charger yet. use / charge / use / charge is getting a little tiresome and it is just my first week with ez-b.
Logic is JD Humanoid (or your build of choice) looks around when battery is flat finds a Glyph (that points in direction to head) and then goes to the home Glyph and parks with coil on breast plate and wireless charges. Seems to be some rough instructables to make a wireless chargers and some pseudo professional solutions element 14 wireless
I am not sure if anyone has built something like this , logic was a script that continually does a getVoltage() and then looks around for Glyph and returns home to charge when low. EZ-B continues to monitor until each cell of the LiPo reaches optimum level and when charged heads off to play again.
@nink, I’m not able to find any reed switches that handle more that 0.5A
@jeremie, What is the fuse rating inside the Revolution robots?
To be safe, I think I’ll go with the microswitch idea you first mentioned. Small ones are raated at 15A
Frank
@Faengelm No we haven't evaluated that battery in particular. The fuse rating in revolution robots is 20Amps.
@Faengelm how about a reed controlled MOSFET?
@Nink Great idea. This is what makes the forum so great!
I’ll prototype this and let you know how it works out
Regards, Frank
@Faengelm From my measurements last night my battery went from 7.558V down to 7.554V in 12hours. From these calculations it looks like the charger would parasitically drain the battery from full charge to 6V in about 300 days.
I'm sure that it would actually be less days than that but I'm pretty confident that you are ok to leaving an unpowered Linkman charger attached to the battery in your design.
@jeremie, Thanks for researching this
Frank
Honestly in my mind I would recommend making a " dock stand" for each robot. The robot would have a couple contacts on the bottom some where to make a connection to a charger. Plus, it could be a could stand / display for the robots too.
@jstarne1 That’s a good point.
I’m pusuring this with several levels of increasing capabilities:
Level 1 would still require turning off the power switch, but would just allow setting the robot on the stand... making the power connection
Increasing levels would handle the shutting off the power switch and determining the end of the charge cycle to disconnect the power
Frank