Electronics > Manufacturing & Assembly

Red Lion panel meter MDMV0000

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jmelson:
Not sure where to put this.  Red Lion Controls made a little LCD panel meter that had some symbols that could be turned on by shorting a couple pins on the back.  I used them in some custom power supplies for an ASIC system we built.  Red Lion no longer makes that module.  I have a few I managed to get on eBay, but will soon run out.

Does anyone know of a small LCD panel meter that can be put into a custom panel with a bezel, and has switchable A and V symbols that can be activated dynamically?  The unit is about 1 x 1.75" on the outside of the bezel.

Thanks,

Jon

bob91343:
I believe there are displays available.  Try this:  https://www.ebay.com/itm/174642532647?_trkparms=aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D20200818142836%26meid%3Df56560b6e55c4afb9321c2e6ea4a4d33%26pid%3D101197%26rk%3D1%26rkt%3D12%26sd%3D184348103390%26itm%3D174642532647%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DPromotedSellersOtherItemsV2%26brand%3DUnbranded&_trksid=p2047675.c101197.m1850&amdata=cksum%3A174642532647f56560b6e55c4afb9321c2e6ea4a4d33%7Cenc%3AAQAFAAACAG25Fplp2TkyC26fixdVgb2rOn9Lb3zOrigtKyd2n6RV0YWDc7DJ%252Fpn%252Fb%252BMFhX4WP4qU6Wr%252BvZVUkPTWEY%252FWNdnEhiEDvYHfeVpTDp5kk%252Fopm80EpWhD0iXjmXpckmSfHoOtBwYK%252F9X%252BL5RCEU549jhgXA2z5cUbI7gS1pOs4PZR4t02%252BikxP3%252Bc3Ey1dS0%252BqlWc1eq2dZzZvpL6hd6dFZTpgPcJX8isoR6vsIUc2L1KP8fQK1txygj%252BZWrNbVFaXz5A5jkbbr9OBUGTHzj%252F%252BO63Mnm0U%252FdoGY8J7siu6BA2CEKLkazBbtdZdOS24jZs8dKljYccR0%252B7sg41klSKdVdWx73tTY8Isb2%252Bvx8KD79dN0Lsu26xiaaS827IiRNh0T9XWekXxfuCadoIrqfP0N9wQXsnheao%252BsLhfYu8%252Bq%252BshC2UQb%252BWd%252FLtdhPbnKmcBdAGcMea4K%252BSOPxLYZ7hpxES6AO5gS1rgOrM3qJPTHAgIJNicsM6tDxwx9mX%252B3204EFm%252BPTsYK7Wo%252BwqQc1RbghL1mzFraWQyuCWh1XjSio%252BN8settSEg4WRXKTUd9WzgE8FZ7ueElGZdk%252Bb9nVMjv6cNIpgRxlnTJhKw1AuaMfosDpKP0k%252Fk8PC39UZTIHJ3W1%252FQPJj0hmRARvGUqYG1cYqFxJnjkp2I9ivMQ%252Bmy095%7Campid%3APL_CLK%7Cclp%3A2047675

jmelson:

--- Quote from: bob91343 on May 17, 2021, 11:26:00 pm ---I believe there are displays available.  Try this:  https://www.ebay.com/itm/174642532647?_trkparms=aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D20200818142836%26meid%3Df56560b6e55c4afb9321c2e6ea4a4d33%26pid%3D101197%26rk%3D1%26rkt%3D12%26sd%3D184348103390%26itm%3D174642532647%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DPromotedSellersOtherItemsV2%26brand%3DUnbranded&_trksid=p2047675.c101197.m1850&amdata=cksum%3A174642532647f56560b6e55c4afb9321c2e6ea4a4d33%7Cenc%3AAQAFAAACAG25Fplp2TkyC26fixdVgb2rOn9Lb3zOrigtKyd2n6RV0YWDc7DJ%252Fpn%252Fb%252BMFhX4WP4qU6Wr%252BvZVUkPTWEY%252FWNdnEhiEDvYHfeVpTDp5kk%252Fopm80EpWhD0iXjmXpckmSfHoOtBwYK%252F9X%252BL5RCEU549jhgXA2z5cUbI7gS1pOs4PZR4t02%252BikxP3%252Bc3Ey1dS0%252BqlWc1eq2dZzZvpL6hd6dFZTpgPcJX8isoR6vsIUc2L1KP8fQK1txygj%252BZWrNbVFaXz5A5jkbbr9OBUGTHzj%252F%252BO63Mnm0U%252FdoGY8J7siu6BA2CEKLkazBbtdZdOS24jZs8dKljYccR0%252B7sg41klSKdVdWx73tTY8Isb2%252Bvx8KD79dN0Lsu26xiaaS827IiRNh0T9XWekXxfuCadoIrqfP0N9wQXsnheao%252BsLhfYu8%252Bq%252BshC2UQb%252BWd%252FLtdhPbnKmcBdAGcMea4K%252BSOPxLYZ7hpxES6AO5gS1rgOrM3qJPTHAgIJNicsM6tDxwx9mX%252B3204EFm%252BPTsYK7Wo%252BwqQc1RbghL1mzFraWQyuCWh1XjSio%252BN8settSEg4WRXKTUd9WzgE8FZ7ueElGZdk%252Bb9nVMjv6cNIpgRxlnTJhKw1AuaMfosDpKP0k%252Fk8PC39UZTIHJ3W1%252FQPJj0hmRARvGUqYG1cYqFxJnjkp2I9ivMQ%252Bmy095%7Campid%3APL_CLK%7Cclp%3A2047675

--- End quote ---
Well, that is just a display, I'd need to add a micro and an ADC.  More trouble than just getting a panel voltmeter.
But, I might have to go that route.

Jon

phil from seattle:
I don't have an off the shelf suggestion for you but think making one is a good idea.  pretty easy to make with a fairly cheap 8 bit micro.  I've been toying with using an ATTiny - $0.75-ish though am sure I could find cheaper if I worked at it. Ammeter, Voltmeter, maybe other functions like message display. 2 or 3 dip switches to set function.  Haven't found a display I really like, though. Another idea is to use a serial port to customize the display (label, units, maybe polling frequency, filtering etc).

I have designed backpacks for the current chinese off the shelf panel Volt/Amp and Ammeters.  Described here.  They have a standard size opening and don't look terrible.  But I would like to be better able to customize them.

Proto:
Amazon has a good selection of digital panel meters for voltage, current and combinations thereof for AC and DC.  Some have a short list of selectable unit annunciators.  I am currently using a combo digital panel meter for ACV in a power line box for 220 and 50A which comes with a current transformer.  Take a look at Amazon for you AC or DC panel meter requirements.

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