tag:blogger.com,1999:blog-3803330253605746037.post551411777150745499..comments2023-08-13T10:10:02.076+02:00Comments on kaktus circuits: MightyWatt revison 2: Now 50% mightier!Jakub Polonskýhttp://www.blogger.com/profile/00934287694461790378noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-3803330253605746037.post-21468926279388159892019-02-25T13:15:42.028+01:002019-02-25T13:15:42.028+01:00Hi
I designed a 3d printable case for the R2 and ...Hi<br /><br />I designed a 3d printable case for the R2 and soon one for R3. I put it on Thingiverse, if you don't mind. <br />https://www.thingiverse.com/thing:3451945/files<br />In case you don't like it I will remove it immeadetly.<br />Thank you for this very usefull open source loadRubihttps://www.blogger.com/profile/12907478486883788336noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-28639086856481871882015-02-13T19:19:21.580+01:002015-02-13T19:19:21.580+01:00I have get the PCB now but have two Questions.
1.)...I have get the PCB now but have two Questions.<br />1.) What is with the IOREF Pin?<br />2.) How did i Connect the I2C Bus because the Pins are beside the Power SupplyAnonymoushttps://www.blogger.com/profile/05125048969356897815noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-82706865944766998632015-01-16T00:24:05.022+01:002015-01-16T00:24:05.022+01:00Thanks for your reply, Jakub. It would potentially...Thanks for your reply, Jakub. It would potentially be a great feature to be 3V3 compliant. I decided now for myself to put it on top of an Arduino Leonardo which runs on 5V. So I bought the revision 2 on tindie just a moment ago. I plan to create a web interface for the device. Can't wait to get my hands on it :)<br />Thanks for the great work on this project!Philipp Klaushttps://www.blogger.com/profile/10577780900440711618noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-35438180741795784352015-01-08T18:26:26.134+01:002015-01-08T18:26:26.134+01:00Hello Philipp. Version 2.0 (this one) cannot run o...Hello Philipp. Version 2.0 (this one) cannot run on 3.3V Arduino. It would need three things: 1) to use IOREF for DAC IO reference; 2) to use IOREF for analog switches power supply and 3) to add a transistor switch for relay because it is currently powered directly from pin. So it needs one more pinhead and one transistor. But the board has to be re-drawn. The IOREF pin is quite inconveniently located for MightyWatt.<br />It is the DAC which has 0.55 to 2.75 V range, not the ADC. The ADC is actually OK since MightyWatt provides 2.5 V precision reference and all DAC/ADC signals are scaled to this voltage.<br />It is a very good idea from you, to make a universal shield. I will think about it, by which I mean I will really dig into it. Do you want me to contact you when I modify the design? Though it will probably take some time.Jakub Polonskýhttps://www.blogger.com/profile/00934287694461790378noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-47736683180753512002015-01-08T15:24:02.415+01:002015-01-08T15:24:02.415+01:00Hi Jakub,
Great project! I'm considering to b...Hi Jakub,<br /><br />Great project! I'm considering to buy the MightyWatt r2 at tindie. One thing I would like to know: Is it a 5V "shield" or can it also run on a 3.3V Arduino (like the Arduino Due)? It would be great if it could run on both but the problem might be the ADC. On the Arduino Due the ADC range is from 0.55 V to 2.75 V. I would be greatful for an answer!Philipp Klaushttps://www.blogger.com/profile/10577780900440711618noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-54504530940613786762014-12-25T08:53:18.481+01:002014-12-25T08:53:18.481+01:00(don't mind the solder job on those 2 pins... ...(don't mind the solder job on those 2 pins... I have removed and replaced them several times trying to diagnose,,,)okashirahttps://www.blogger.com/profile/17208110546894174164noreply@blogger.comtag:blogger.com,1999:blog-3803330253605746037.post-1326147010371677282014-12-25T08:51:53.508+01:002014-12-25T08:51:53.508+01:00I got the my mightwatt in... having an issue with ...I got the my mightwatt in... having an issue with the board.<br />it shorts out the 5v input and the circled red component gets hot if I feed it 2 amps on the two pin header:<br />http://1drv.ms/1xjEMkc<br /><br />I sent you messages on tindie...okashirahttps://www.blogger.com/profile/17208110546894174164noreply@blogger.com