Details of user Wolfram Fischer

Name:	Wolfram Fischer
Joined on:	feb 16, 2016
Status	Member
E-mail:	mega-hz@mega-hz.de
Website:	www.mega-hz.de
Company:
Address:
ZIP/PC City:
Country:	Germany
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Comments by Wolfram Fischer

Date	Article	Comment
apr 04, 2018 22:37:50	Arduino wattmeter	Hi Freddy, after long time using the powermeter i have a special wish, maybe you can give some hints: For my PV System i need a powermeter with 4 Inputs, PV1, ...
aug 07, 2016 09:31:24	Arduino wattmeter	you can use a thick piece of copperwire and calibrate that.
may 08, 2016 19:55:13	Arduino wattmeter	@Patrick: Those changes are quite simple, autorange over 50V turns on a relays wich opens a shorted 10MOhm R, in the software it changes the Vdiv Value. The re ...
apr 23, 2016 19:03:55	Arduino wattmeter	pictures are resized now.
apr 18, 2016 01:54:40	Arduino wattmeter	Hi, i made a Powermeter in a old Centronics-Switch Case and there are some changes to Freddys original Powermeter: Changes are: 1.: Voltage Autorang ...
apr 15, 2016 12:42:07	Arduino wattmeter	Hi Freddy, i have build this nice Powermeter into a nice case, put a LO/HI Autorange into the Software, it switches a 10MOhm Resistor with Relays and the Vdiv ...
mar 20, 2016 23:38:35	Arduino wattmeter	@Freddy: This project is sooo much nice, could you make it running on a Raspberry PI too? There would be nice features as Datalogging much more easier. Or did ...
mar 17, 2016 17:16:23	Arduino wattmeter	@Freddy: is it right like this: paramValues[22] = paramValues[19] / 3600; // (k)Wh Energy paramValues[23] = paramValues[12] / 3600; // Ah Charge I added Rin ...
mar 17, 2016 06:21:27	Arduino wattmeter	Hi Freddy, i connected the wattmeter to my solar panel and batterys, after a sunny yesterday it shows about 38Ah, thats ok, but the KWh showing 147 mWh ! The m ...
mar 10, 2016 23:02:14	Arduino wattmeter	i can live with these changes: /* Calculate values Voltage / paramValues[0] = float(secMeanVolt) Vscale / totAverage; // calc. mean Volt ...
mar 08, 2016 19:34:23	Arduino wattmeter	Hi, i put instead 1n4148 bas416 into the protection circuit, but still the same: -0.01V and 0.01A Even with no diodes at all!
mar 07, 2016 05:39:59	Arduino wattmeter	isn't it possible to adjust this offset in the software?
mar 06, 2016 23:13:29	Arduino wattmeter	should i use shottky diodes instead or 2x 1n4148 in series?
mar 06, 2016 13:24:37	Arduino wattmeter	Hi, i calibrateted the Wattmeter, it is very precise! But with no Voltage it shows -0.01V. Where can i fine-adjust it so it shows 0.00V?
feb 22, 2016 20:56:33	Arduino wattmeter	Freddy, I have found an error: you said, for Ah Ampereseconds (As). To convert this in the common used Amperehour (Ah), multiply the reading by 3600. it mus ...
feb 21, 2016 22:24:46	Arduino wattmeter	does it support a 4x20 lcd too? And would you implement a 128x128 GLCD in Text-Mode with a T6369 Controller if i send you some displays? I have got plenty of t ...
feb 21, 2016 10:28:36	Arduino wattmeter	Hi Freddy, i added kWh and Ah to the parameters, should it be a 99 for autorange or a 100 in paramRange? paramValues[22] = paramValues[12] * 3600; ...
feb 18, 2016 19:30:51	Arduino wattmeter	Hi Peter, i think it should be working at nearly any current, you just have to put in the right shunt-resistor! for 630Amps it would be a fat one, maybe a piece ...
feb 17, 2016 06:53:08	Arduino wattmeter	Where can i find a variable for reverse (-) current? I want to change the lcd background colour if current is reversed. (Using a 2x16 with RGB Backlight)
feb 16, 2016 23:49:28	Arduino wattmeter	ok, i will get it a try for both things, HI/LO Range and 2nd LCD. Thanx for your great Projekt!
feb 16, 2016 23:00:55	Arduino wattmeter	Hi, would it be much work if you make a 2nd CS for a 2nd 2x16 LCD? I can't use a 4x16, just want to use 2 peaces of 2x16 LCDs! As i Can see are A0 to A4 s ...