How come my 3.7 V 2200mah battery wont work with an adafruit M4 express/featherwing propmaker and 2 60 led/m neopixel strips and a small speaker. Only wondering because ive been doing the lightsaber project. I wanted to cut down on hilt diameter so i used the smaller battery. I did this considering that the darksaber project literally is set up exactly like my set up. do i really need the 4400mah battery?
if it can work, then why wont my lightsaber activate. it works fine when its plugged in to my laptop runnning off the REPL. but it does nothing except glow green when my battery is plugged in.
Tell me why this doesnt work (ightsaber)
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- dastels
- Posts: 15659
- Joined: Tue Oct 20, 2015 3:22 pm
Re: Tell me why this doesnt work (ightsaber)
You're using 120 NeoPixels? The Darksaber build uses 34. The Lightsaber build uses 144. The more NeoPixels you have, the more power you need, thus a bigger battery.
So, yeah, you apparently really need the 4400mAh battery.
Dave
So, yeah, you apparently really need the 4400mAh battery.
Dave
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Tell me why this doesnt work (ightsaber)
Agreed. 120 pixels can draw as much as 7200 mA at full intensity white. The 2200mAh cell protection circuit will shut down if you exceed 4400mA. The 4400mAh pack is good to an 8800mA discharge rate.
- Fencera
- Posts: 38
- Joined: Tue Mar 02, 2021 9:44 am
Re: Tell me why this doesnt work (ightsaber)
Wow okay I guess I’ll try it with the 4400 man pack. Was really hoping to avoid such a bulky hilt. Thank you!
- Fencera
- Posts: 38
- Joined: Tue Mar 02, 2021 9:44 am
Re: Tell me why this doesnt work (ightsaber)
my new 4400mah battery came in and it still does not work. it just hovers green. ill try and charge it to full capacity but at this point i have no idea what the issue is.
- Fencera
- Posts: 38
- Joined: Tue Mar 02, 2021 9:44 am
Re: Tell me why this doesnt work (ightsaber)
i have fully charged the battery and it still doesn't work. im wondering if it has to do with uploading the code?
Please be positive and constructive with your questions and comments.