Reddit reviews 16 Channel PWM/Servo Driver IIC interface-PCA9685 for arduino or Raspberry pi shield module servo shield
We found 5 Reddit comments about 16 Channel PWM/Servo Driver IIC interface-PCA9685 for arduino or Raspberry pi shield module servo shield. Here are the top ones, ranked by their Reddit score.
It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputsAdjustable frequency PWM up to about 1.6 KHz;Configurable push-pull or open-drain outputManufacturer12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rateWe are the owner of Brand"FICBOX",Customer Services is Valid for Purchasing from "FicBox Direct" ONLY
a combination of what everyone said.
The cap is the actual answer but I think you need a bigger power supply because it looks like your circuit is drawing close to the limit of the power supply. The danger here is that the power supply will randomly drop below required power for a very short amount of time. everything will look fine and your uno will look responsive but random errors will show up. You'll go crazy trying to debug the problem and you won't find it because it's completely random when it occurs.
Another issue could be noise from the power supply and/or the motor. the cap should fix both. it's not uncommon for people to use decoupling caps for their breadboards to eliminate the noise.
if it looks like you want more servos, you should get a servo driver. it takes the workload off the uno and does the power handling for you.
https://www.amazon.com/Channel-Driver-interface-PCA9685-arduino-Raspberry/dp/B01D9VNXEQ/ref=sr_1_5?keywords=servo+shield&qid=1567870064&s=gateway&sr=8-5
someone correct me here if i'm wrong on the following:
if you can't do that and the cap is not working for you, use two power supplies. one directly to arduino and another one just for the motor. tie the grounds together.
Here is a PWM controller that supports up to 35v: http://misfittech.net/16-channel-fet-pwm-driver/
You can get 16-channel i2c PWM controllers for less than $10, but they are designed for servos or lower-voltage LEDs, not 24v: https://www.amazon.com/Channel-Driver-interface-PCA9685-arduino-Raspberry/dp/B01D9VNXEQ/
But if I have the servo chip independently powered, then the VCC wouldn't be needed right?
This is the chip I have https://www.amazon.com/gp/product/B01D9VNXEQ/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&psc=1
>It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs
That one is a good one, but It doesnt look like its meant for solder-less prototyping.
I did find and just order this one though: https://www.amazon.com/gp/product/B01D9VNXEQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Could I get 3 of these: https://www.amazon.com/Channel-Driver-interface-PCA9685-arduino-Raspberry/dp/B01D9VNXEQ/ref=sr_1_3?s=electronics&ie=UTF8&qid=1521743412&sr=1-3&keywords=16+channel+pwm
Also any suggestions on which Arduino to get, I see there is the Mega and Leonardo.