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isl-org / OpenBot

OpenBot leverages smartphones as brains for low-cost robots. We have designed a small electric vehicle that costs about $50 and serves as a robot body. Our software stack for Android smartphones supports advanced robotics workloads such as person following and real-time autonomous navigation.
https://www.openbot.org
MIT License
2.77k stars 513 forks source link

Unpowered arduino nano #354

Closed rfedersp closed 1 year ago

rfedersp commented 1 year ago

Hi, I'm a total beginner in electronics and I'm trying to build the DIY version of OpenBot (which is a great project!). The problem is that I can't power the Arduino Nano with the voltage divider bridge... Is my assembly wrong?

20230425_223412

thias15 commented 1 year ago

Hard to tell from the image but looks roughly ok. Can you measure the voltage with a multimeter? Note that if you built the voltage divider as per instructions and connected it to the corresponding pins the purpose is not to power the Arduino but to measure the battery voltage. The Arduino is powered via the USB connection to the phone.

rfedersp commented 1 year ago

I measure a voltage of 0.6 but it must be normal if it is not intended to power the arduino.
On the other hand, when I connect my phone to the arduino, no led lights up, is that normal?

rfedersp commented 1 year ago

The problem was with my OTG cable... Everything works now! Thank you for your help :)