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71
Is it having no effect?  The amount of braking depends on the motor, small motors have less torque
so brake less.

Try setting both inputs low and enable low, then twist the motor shaft and feel the resistance.
Repeat with enable high - there should be a difference.

Note that the L298 is a darlington driver so you will only get braking down to a certain lower
speed limit when the forward-voltage of the darlington outputs matches the back-EMF - any slower
than that and there is no braking.

Use a MOSFET H-bridge for much better performance.
72
If the Rx/Tx connection fails, have you ever tried to upload using ISP? I'd burn a compatible bootloader first, before trying to upload sketches.
If Op is uploading via ISP, s/he will overwrite the bootloader every time.

Ray
73
Project Guidance / Re: Atmega328P-PU alternatives...
Last post by carguy - Today at 03:31 pm
I've successfully burned a bootloader onto my 1284P-PU using the Arduino Uno and the sketch "Atmega_Board_Programmer.ino", as devised on Nick Gammon's web page: http://www.gammon.com.au/breadboard

Burning the bootloader is no problem, I've actually done it a few times now. But then when I try to upload a sketch to the 1284 via the Uno board, I just keep getting errors. It tells me that the serial port is either not present or that the board is not connected. I've checked my wiring many times over, it just doesn't seem to be the problem.

So what do you think of the adaptor on eBay?
74
Programming Questions / Re: analog poti remove jitter?
Last post by J-M-L - Today at 03:30 pm
fair point

have you tried a moving average filter option smooths things out?

75
Programming Questions / Re: ESP8266
Last post by aniskazi - Today at 03:28 pm
Then WHY in heavens name are you using SoftwareSerial? You have 4 hardware serial ports. Connect the ESPxxxx to one of them.

You DID read the page about which pins you could do SoftwareSerial on on the Mega, didn't you? (I didn't think so.)
No I did not read that page. And just googled it and found this:
Not all pins on the Mega and Mega 2560 support change interrupts, so only the following can be used for RX: 10, 11, 12, 13, 14, 15, 50, 51, 52, 53, A8 (62), A9 (63), A10 (64), A11 (65), A12 (66), A13 (67), A14 (68), A15 (69).

are you talking these pins to be used?
76
Ok.

Could I add an external crystal and use it as a timer (with better precision compared to watchdog timer)  even in power down mode ? Would a 32 kHz crystal suffice?  or 12/16 MHz?  would they use too much energy?

Thanks.
77
MKR1000 / Re: Does the SAMW25 SOC on MKR...
Last post by Count - Today at 03:27 pm
Thanks michael,

                 Can I bootload my new SOC ATSAMW25 with arduino IDE just like I bootload ATMEGA328 using arduino UNO. If so what procedure should I follow.

Thanks in advance
78
Hardware / Re: Arduino Zero pin 13 PWM
Last post by astrobeed - Today at 03:27 pm
Tocca verificare se realmente viene usato TCC2 invece di TCC0.
Non ho la ZERO e non ho installato il relativo core, quindi non ho modo di verificarlo. :)
79
Project Guidance / Re: Autonomous Car & Plane
Last post by AWOL - Today at 03:27 pm
Hi, thanks for the quick reply,  I will use them for the servos and escs.  I have all the motors already connected to the esc's

and what is the servo library?
Try here
80
Arduino Due / Re: Need to increase the speed...
Last post by ChrisLewis - Today at 03:26 pm
Have a look at this page, towards the bottom

http://www.djerickson.com/arduino/
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