Recent content by bikegeek

I think I will use a step down convertor than. Thanks you for the info.

Hi guys, I want to build a 12V pack from 3s or 4s 18650 cells. I want to use the pack for my telescope and mount. What I don't know is what voltage stabilizer to use. From my undestanding the step-up/step-down dc-dc buck converter changes the output voltage if the imput voltage changes. I'm...

I also had some problems with the power supply for the arduino. When I was using 9V it was freezing after a few welds. So I now use a 5V usb power supply.

Hi Marty, Nice welder you are building. That was my plan too, to add a display and a dial and not to use the computer to change the time. But i'm not that good at arduino and the friend that helped me is busy now. Maybe you could share you design because I would like to make it nicer and not...

Or it is the 3 speed switch wire? Because I'm not sure.

Hi, It is normal that from the controller on the PAS signal wire to have +5V? When I connect the PAS sensor the voltage drops to +1.7V and the controller is not running. I have a problem with this controller wich dose not want to work on PAS.

Yes, is running ok. Not as fast as with a 36V battery but it spins. With weight on the bike it has no power to move forward, with no weight on the bike it moves forward. What I'm missing is the torque.

With me on the bike and full throttle the bike is not moving. That low the power is. The wheel is 20" and the battery voltage is about 26V. I can make some changes or I have to buy other controller?

Hi, I have a controller that works on 24V and 36V. I have a bike with 24V battery but when I connect it to the controller I don't have enough power. On a 36V battery works perfect. How can I make the controller to work with the 24V battery? It has the learning wire but I don't know how to...

Hi guys, I have a problem with a controller, I don't know how to connect the Anti-theft Cables (two power and three signal). Could you please help me? :D

I'm waiting for 12 cells of Panasonic NCR18650PF send on 16.02.2016. They sad it will open a case at the local postal office that could take 60 days to find out what happened with the cells. I've ordered from an other seller meanwhile.

Hi, I managed to find that connecting the white wire to positive (+36V) the braking takes place.

I return with news. The battery works perfectly. From the first time. So you can change the cells for this type of battery. One thing you have to take in to account. At the reassembly i managed to snap a SMD from the board. I don't know how. So you have to take a lot of care when you...

Hi, I want to buy a DIY ebike kit from Europe (EU) and I don't know any supplier. Do you have any recommendation? But from Asia, do you have any recommendation for a reputable supplier? Ebay or Aliexpress? I want to buy a front/rear wheel 36v 250-350W kit (with battery) but I want to buy...

You are right. You guessed well all the connected wires. This controller was from an electric scooter that had a motor with a single sprocket. I did some measurement today and the blue wires have +5 volts between them. And they go to a plug that splits in two separate cables each one single...