20-06-2013, 06:05 AM
(19-06-2013, 09:35 PM)Yorkie Wrote: Looks like they've charged the display from the backlit blue display I have on mine. Same main PCB I guess. Great value for money.
There's a new version of the firmware too - you can flash it yourself if you have a V1 unit. The new firmware is at http://www.adrive.com/public/uUK8nn/AVR ...pgrade.rar - instructions are included in the RAR file - the uP is an atmega168V and you'll need an AVR ISP programmer as well, otherwise its a standard ISP process well known to anyone who mucks about with uPs...
Having looked at the instructions and the enclosed diagrams, I can confirm that the details are "sub optimal" and far from clear. I'll have a go myself (I have a V1 unit) and write it up if anyone is interested...
Quote:As to checking ESRs in circuit, there are mixed views about that, and videos on YouTube to show how it can give misleading results due to the effect of other components in the circuit.
Yup - this is always problematic - I have done this in the past as a go/no-go test as other components should make the ESR lower, so if you get a high ESR then the cap is duff - not a 100% test, but a good indicator of potential issues...
sıʌǝɹq ɐʇıʌ `ɐƃuol sɹɐ
ʞɔıu
ʞɔıu
