As seen here: EmonTH 2 not connecting - #22 by pb66, we have had a bad batch of emonTH units. It is a power supply issue between the battery and the board - with a programmer the board works fine. Tell-tale sign is that all these boards happen be be green in colour. Will only affect people who have ordered in late December or this year. Please direct anyone affected to email the shop ([email protected]) or PM me. Thanks!
Update: not all green PCB emonTH’s are affected only a few units from the batch.
It does indeed
Are you able to test? This would help confirm it is the emonTH at fault since you are not using the regular programmer. (ref EmonTH 2 not connecting - #17 by lgheorghe).
We would obviously be happy to cover the cost of the chip for you if you wanted to go ahead and fit it yourself. Be warned however, it’s a very fine pitch SMT! It’s possible to solder by hand (I’ve done it may times) but it’s on the tricky end of SMT hand soldering!
Will you get the chip added or would you consider selling the boards at a discount rather than binning them? I can think of a use for a permanently powered EmonTH as a pulse counter
Chips are being fitted by the factory as we speak! However we do have a few units still awaiting a chip. Happy to sell with £6 discount (£25 ex VAT + £3 shipping).
If you want to proceed please order 28 x special payment units and leave a comment at checkout stating that you would like emonTH V2 without the DC-DC converter chip:
Is it ok to buy the board with the missing boost chip that I have, at 28 x special payment units, instead of returning it?
I will try to fit the chip by myself.
Never from ebay, unless prototyping since you can’t guarantee supply quality. We use RS, Farnell and occasionally Digikey. There is a list of supplier who stock the chip listed on the octopart link I posted above.
