robotmaker
USA
Asked
— Edited
lot of are using a roomba 400 series with EZB and its a great platform for any type of robot design with decks or without,mostly go very cheap on ebay $35 average price when you remove all vacuum motors,and parts you have a lot of room,plus 2 high current switches (1.5 amp) and 1 low current switch (500 ma) plus auto docking and charging ,total weight it can carry is little over 35 lbs
so i design and made a motor upgrade kit i am looking to sell soon it will double the carry weight,has changes to main PCB and higher torque motors szoon as i finish testing the themal and current protection and few other tests will be selling it
so all i need is to put this new RS385 motor instead of the originals?
yes ,plus put mosfets in parallel ,so you need 8 total plus 2 sense resistors in parallel
Cool. do you sell it or should I buy it from ebay? Also can you provide the schematics how/where to connect the mosfets?
i have a lot,on the circuit will how to draw a circuit,or you can buy higher wattage mosfets and just replace them,will get a part # for the mosfets
Sound good. Do you have the upgrade kit on eBay?
not yet,i had the motos up on ebay,and forgot to put them up again,will relist them
SATERDAY night will work out the mosfets and part #,i know i dont have any in stock
o mostly get them from digikey,i buy about 25 to 50 at a time
SATERDAY night should have all the info you need
Thanks, tell me when it's up
ok ,it uses 2 pnp transistors and 2 npn transistors new part #'s are MJE200G for npn and MJE210G for pnp,it will take about a week before i get them from digikey and on the resistor needed is a 3 watt 1ohm in parallel with R41 and R12 on pcb
the original part #'s are 2SB772 for PNP and 2SD772 for NPN