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Member Since: January 25, 2012
Country: United States
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J1 (see your product photo) is not described anywhere.
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So, this only appends the data to a csv file, but there are no plots and no aggregations? This is very disappointing, as there is already a mature and open source solution: thingspeak.
I personally use rrdtool for this kind of data.
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the noise immunity of this circuit is laughable at best. hooking it to vcc/gnd of an avr and letting the avr switch ~50mA (led a led bargraph) will trigger the gate led. operation depenend on input voltage. this is another badly designed circuit.
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You left D13 unused and attached LED13 to D14?
Very, very idiotic.
Attaching D13 to the LED would have the added benefit of having a solder point to use that otherwise unreachable pin. Not to mention that all arduino boards traditionally had the LED on D13.
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Well… it’s been more than two years and nothing changed about this badly designed module. As usual i will vote with my wallet and buy Adafruit or Pololu modules instead.
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Just wanted to let you know that i opted for some stepsticks (instead of a quadstep) for my current project because there was no reaction to the problems i posted here, emphasising on the component / connector placement.
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Don’t buy it!
TI decided to package the watch with a compiler that is limited to 2KB codesize (the watch has 8KB), so it’s impossible to compile anything bigger than a simple helloworld.c
Even David (EEEV Blog) is selling his because of this (idiotic!) limitation.
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I would like some improvements for the next version:
- component placement around chip makes it hard to add heat sinks
- stepper output connectors not 0.1" (that sucked hard)
- output connectors too close to each other
- potis+leds too close to connector pinout
- drop bus mode, control only by EN is pretty useless for eg. reprap
- output leds should get an impulse lengthening circuit so you can see that a stepper is actually stepped even for certain step frequencies
- barrel jack for a circuit that could potentially drain 8 amps?
- jumper text should read “close for 3.3v” not “5v”
- gnd-pins beside MS-pins so you can simply add jumpers to control microstepping
No public wish lists :(