Kategorie: Electronics
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Flashing esphome on Shelly 1 mini gen3
I dont like the stock shelly firmware, as it does not support toggling the light when the switch input toggles (it only supports turning on when the swtich turns on, and vice versa, but it gets confusing when you toggle the light once online, then you have to press the switch twice?!) and because the…
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Installing a 43kW DC charger for electric vehicles
I was able to get a very cheap Dual Output DC Charger from an electric mobility faire in stockholm from a asian manufacturer, they used this device to show off and sold it cheap to avoid heavy transportation back to the origin country. I was lucky that my employer also had a stand at the…
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Fixing a seemingly dead Native Instruments Traktor Kontrol D2
I got a really nice deal off of Willhaben: a DJing controller from Native Instruments (Traktor Kontrol D2) with a built-in screen and lots of controls. The only problem: it was sold as defective, description said it won’t turn on. This thing is only compatible with NI’s propritary windows drivers and is not even a…
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Adding some headlights to my bobbycar
Using a telegram bot for free amazon products I was able to get my hands on a free led spot light. OrderMania or CollectMania on telegram allows you to apply for a position for free products, you have to make your amazon profile public readable and provide them a link to it. If you have…
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Let’s build a new custom battery pack for the new bobbycar 2.0
My black motorized bobbycar chassis broke completely apart in Augarten (Graz) right before we wanted to head off to the hungarian hacker camp Camp++. I already had a red bobbyquad chassis laying around and most of the parts could easily be transplated. Also the colorful bobbyquad chassis were not produced for a long time already…
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Trying to balance the unbalanced battery pack of the bobbycar
Since I started charging my bobbycar with 2 or up to 3 paralell chargers (40A peak sometimes) my battery started to get a little damaged. Some cells get empty or full much quicker then the rest of the cells. Which usually cuts off charging or discharging way earlier which causes the bobbycar to stop usually…
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Dead BMS and more charging power for the bobbycar
At the end of 2019 there has been a congress held by CCC in Leipzig. Lots of accidents have happened, the throttle and breaking pedals were toren off, the BMS died, a frontal crash with a public bench has bent the steering wheel and much more. But let the pictures speak for themself: Dead BMS…
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Adding WiFi to the bobbycar and creating an ESP32 GUI library
In one of my last posts I reported that trying out new parameters like a higher speed limit, higher current limit, enabling field weaking and other changes always require me to completely disassemble the bobbycar and everytime I have to do that, I scratch my hands alot and I start bleeding. It’s about time to…
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Making a cheap electric bobbycar
Today we try something completely new! Let’s build an electric bobbycar, with 4 motors attached to a bobbycar kids toy chassis, with integrated battery pack for small, short rides in the city! We will reuse the Motors, Electronic PCBs and maybe also the battery of old (broken) hoverboards. That should make the electric bobbycar really…
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Reducing the inrush current of a power distribution box
In another post I reported about my shitty fuses in my flat that constantly go off, whenever I turn on my power distribution switch for my main PC. It looks like the initial high current that fills up the capacitors trips the 16A fuse. My idea to solve the situation: Decrease the rush in current…