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 |
| Phone: | |
| Notes: |
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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 Ampere*seconds (As). To convert this in the common used Ampere*hour (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 ... |
