Search found 10 matches

by john_m0ers
Fri Sep 06, 2019 9:01 pm
Forum: Motor drivers
Topic: Breakout board for A4988 Stepper Motor Driver (HC3DPR0038)
Replies: 2
Views: 5069

Re: Breakout board for A4988 Stepper Motor Driver (HC3DPR0038)

Hi,
I take it the pin marked in the picture as "select", is actually "step". A very useful board for testing motor drivers, and building a 3 or 4 axis printer/cnc machine.
regards john
by john_m0ers
Mon Jan 14, 2019 10:26 pm
Forum: Arduino Shields
Topic: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)
Replies: 5
Views: 2735

Re: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)

hi Andrew, thank you for that. I will try tomorrow and let you know.
regards john
by john_m0ers
Wed Jan 09, 2019 10:20 pm
Forum: Arduino Shields
Topic: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)
Replies: 5
Views: 2735

Re: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)

They are incredibly close, however that doesn't detract from their usefulness though. I have hooked mine up to an Arduino uno programmed with the provided sketch. Using two of your nema 17 motors, which have the correct plugs to connect straight to the board. The issue I'm having is that with 12v pl...
by john_m0ers
Wed Sep 26, 2018 7:23 pm
Forum: Arduino Shields
Topic: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)
Replies: 5
Views: 2735

Re: Dual A3697 Stepper Motor Driver Shield (HCARDU0103)

Hi, A beautifully made product, but one word of warning. If this is used on the hobby components Arduino, there is a potential for the usb shorting out the underneath of the motor driver shield. I've yet to find a permanent solution, other than to make extenders to the Arduino connectors. Maybe glue...
by john_m0ers
Wed Mar 02, 2016 11:38 pm
Forum: Motor drivers
Topic: Pulse / PWM generator for stepper motor drivers (HCMODU0062)
Replies: 2
Views: 8396

Re: Pulse / PWM generator for stepper motor drivers (HCMODU0

I got to replace the zener diode today, and it is now functioning as it should. Its an easy way to test stepper motors and drivers.
regards john
by john_m0ers
Tue Mar 01, 2016 8:51 pm
Forum: Motor drivers
Topic: Pulse / PWM generator for stepper motor drivers (HCMODU0062)
Replies: 2
Views: 8396

Re: Pulse / PWM generator for stepper motor drivers (HCMODU0

Hi, I wired the boards exactly as shown above in the diagram, and after working for a few seconds, the hcmodu0062 went absolutely dead short 0.3ohms. I found a zener diode that read zero ohms. I have replaced it with a 13v 1.3W and the lights come on now. I will connect it up to the other board and ...
by john_m0ers
Mon Oct 19, 2015 11:19 pm
Forum: General Discussion
Topic: Programming PICs
Replies: 1
Views: 3289

Re: Programming PICs

Hi, did you find the answer to your problem, I noticed you didn't get a reply?
john
by john_m0ers
Sat Jul 11, 2015 9:30 am
Forum: Wireless / Wired
Topic: ESP-12 (ESP8266) wireless WIFI transceiver (HCMODU0077)
Replies: 7
Views: 27906

Re: ESP-12 (ESP8266) wireless WIFI transceiver (HCMODU0077)

Hi, I received my modules yesterday thank you.
Only today have I had chance to really look at them, and the first thing I noticed was the pin spacing.
Do you know if they're 2mm pitch, my ruler is fifty years old!
Thanks john
by john_m0ers
Wed Apr 02, 2014 9:15 pm
Forum: RTC
Topic: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU0011)
Replies: 81
Views: 49543

Re: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU00

Hi, I was thinking of the insulated ds18b20s that I got from Hobby, but I suppose in a small self contained unit with a controller and lcd this could be useful. The main reason for asking was that I read somewhere that a similar module burned out the ds18b20. I suppose there could be a few reasons w...
by john_m0ers
Tue Apr 01, 2014 10:35 pm
Forum: RTC
Topic: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU0011)
Replies: 81
Views: 49543

Re: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU00

Hi, After reading through all the posts, I cant find any mention of someone mounting a ds18b20 module in the three holes outlined.
What if any are the 'gotchas'
regards john