Search found 731 matches

by OutoftheBOTS_
Thu Mar 26, 2020 9:45 pm
Forum: ESP32 boards
Topic: Long delays in handling "large" datasets
Replies: 4
Views: 85

Re: Long delays in handling "large" datasets

10s seems quite long ans surprised me.

I would look at moving blocks of data not 1 line at a time.
by OutoftheBOTS_
Tue Mar 24, 2020 10:40 pm
Forum: Hardware Projects
Topic: L298N with stepper motor on ESP32
Replies: 3
Views: 133

Re: L298N with stepper motor on ESP32

Ok Nema 17 is a physical size of a motor it doesn't tell me what amps or volts it should be driven at. Although it is probably a stepper motor servo motors also come in this size. Atm all the motor drivers you are posting are what is a called a H-bridge. like all the H-bridges you have posted it is ...
by OutoftheBOTS_
Tue Mar 24, 2020 9:59 am
Forum: Hardware Projects
Topic: L298N with stepper motor on ESP32
Replies: 3
Views: 133

Re: L298N with stepper motor on ESP32

First of all are you using a stepper motor or a DC motor?? The current code you posted will turn a DC motor but not a stepper motor. Although it is possible to drive a stepper motor with a dual H-Bridge like a L298N this will have many disadvantages to using a stepper driver. Normally what matters m...
by OutoftheBOTS_
Mon Mar 09, 2020 7:50 am
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 230

Re: Touch screen recommendations

Another super interesting way that I have made a really nice interface was when using ESP32 it hosted an webpage with the needed interface and I could just use any browser on any phone or tablet to input anything that I needed.
by OutoftheBOTS_
Mon Mar 09, 2020 7:16 am
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 230

Re: Touch screen recommendations

Capacitive touch would be preferable but not necessary because I probably will not be typing more than a dozen characters at a time. I would definitely consider writing a python library for the FT80x but another forum member posted that the interfacing was harder than he thought. The Nextion knocko...
by OutoftheBOTS_
Sun Mar 08, 2020 5:40 am
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 230

Re: Touch screen recommendations

Have you seen options like these screens with captive touch that are designed as human interface for Arduniuo?? https://www.ebay.com/itm/New-3-5-Capacitive-Touch-Screen-HMI-I2C-LCD-Display-Module-480x320-for-Arduino/253573549737?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D225640...
by OutoftheBOTS_
Sun Mar 08, 2020 5:25 am
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 230

Re: Touch screen recommendations

I think that you should consider if the touch screen is a captive touch or a resistive touch if you want to use it as a keyboard. It is very easy to type on a captive touch as your finger doesn't even need to touch the screen for it to be detected but a resistive touch needs a reasonably hard touch ...
by OutoftheBOTS_
Wed Mar 04, 2020 7:40 am
Forum: ESP32 boards
Topic: fast (>1kHz) readings from accelerometers
Replies: 13
Views: 1019

Re: fast (>1kHz) readings from accelerometers

As Peter and OutoftheBOTS have already alluded to, using SPI would likely be preferrable, for the reason already mentioned that you can drive it faster, but more importantly many devices like this support a streaming interface. So you can just read in samples at some rate with no other overheads. (...
by OutoftheBOTS_
Tue Mar 03, 2020 9:45 pm
Forum: ESP32 boards
Topic: fast (>1kHz) readings from accelerometers
Replies: 13
Views: 1019

Re: fast (>1kHz) readings from accelerometers

All the Quadcopter guys use SPI to read the IMU as it is much faster than I2C (much less overeheads in the protcol as well as higher baud rate). They all tend to use the older MPU-6050 because it isn't as sensitive as the new MPU-9260 and tends to have less noise problems from 4 brushless motors sc...
by OutoftheBOTS_
Mon Mar 02, 2020 8:35 pm
Forum: ESP32 boards
Topic: fast (>1kHz) readings from accelerometers
Replies: 13
Views: 1019

Re: fast (>1kHz) readings from accelerometers

All the Quadcopter guys use SPI to read the IMU as it is much faster than I2C (much less overeheads in the protcol as well as higher baud rate). They all tend to use the older MPU-6050 because it isn't as sensitive as the new MPU-9260 and tends to have less noise problems from 4 brushless motors scr...