44 replies to this topic

[Rosssco]

Welcome to come north of The Wall (i.e. proper North) and fix mine (then poke about to your hearts content..)

[Ormes]

Flid has offered me a broken one, but if anyone else also has one then that would be ace

Or to let me near their car with an oscillllllosciope

 

Awaits replacement relay in the form of a cheap replica arduino that uses 4 lines of code Available now, for £4.99
 

[alexb]

Just beware that a cheap replica Arduino usually is not very happy with 12V or more. Add a decent voltage regulator. I use a cheap replica Arduino Uno to PWM control the water pump for the chargecooler and have a display connected to it to view the status of the pump. Now and then it gets upset showing strange characters on the display. I assume that's due to voltage spikes (or me not adding the I2C pull up resistors). Added some code to refresh the complete display when required, as I couldn't be bothered with doing a proper job. I do not have a voltage regulator and this Uno is only specified for 12V. But when it blows, no big deal. In case of the big yellow, I would be a little more careful. And voltage regulators are dirt cheap too.

 

But you're right, for that kind of application, Arduino all the way. A Nano or some even smaller clone might fit the original housing

[Ormes]

Just beware that a cheap replica Arduino usually is not very happy with 12V or more. Add a decent voltage regulator. I use a cheap replica Arduino Uno to PWM control the water pump for the chargecooler and have a display connected to it to view the status of the pump. Now and then it gets upset showing strange characters on the display. I assume that's due to voltage spikes (or me not adding the I2C pull up resistors). Added some code to refresh the complete display when required, as I couldn't be bothered with doing a proper job. I do not have a voltage regulator and this Uno is only specified for 12V. But when it blows, no big deal. In case of the big yellow, I would be a little more careful. And voltage regulators are dirt cheap too.

 

But you're right, for that kind of application, Arduino all the way. A Nano or some even smaller clone might fit the original housing

 

[slindborg]

nanos are, ironically, massive.

 

Pro mini is the kiddy.

 

I'd chuck in an automotive spec PSU AND also a transient alternator dump protection diode/triac setup... but Of course, I dont know WTF I'm doing