tag:blogger.com,1999:blog-8133569459594119617.post5258630560578209470..comments2021-09-24T15:04:43.119+02:00Comments on Ardugonic: Driving an 8 digits 7 segment display with Arduino and an ICM7218AArdugohttp://www.blogger.com/profile/09590756089939685926noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-8133569459594119617.post-4120450092707847492013-05-10T11:56:46.793+02:002013-05-10T11:56:46.793+02:00Hi,
the display is not connected directly to the a...Hi,<br />the display is not connected directly to the arduino but through the ICM7218, so no resistors needed.Ardugohttps://www.blogger.com/profile/09590756089939685926noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-35778477866870793982013-05-09T20:25:34.090+02:002013-05-09T20:25:34.090+02:00One more question, home did you avoid using any re...One more question, home did you avoid using any resistors for the display? my understanding is that arduino pins put out 5.0 volts and these displays need 2.1 volts, wouldn't you need a resistor to avoid burning them out? or do you have resistors that i just can't see here? thanks again!Max Bhttps://www.blogger.com/profile/10173670234390875296noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-25957549434474551422013-05-07T05:12:39.685+02:002013-05-07T05:12:39.685+02:00thank you! this is my first foray into arduino and...thank you! this is my first foray into arduino and i've only done very minor digital electronics work before so your posts have been fantastic as i'm trying to build a similar project (an 8 digit chess timer)Max Bhttps://www.blogger.com/profile/10173670234390875296noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-71642011940316561752013-05-06T16:50:29.151+02:002013-05-06T16:50:29.151+02:00Hi,
this is stated in the datasheet of the 7218:
&...Hi,<br />this is stated in the datasheet of the 7218:<br />"Supply Capacitor<br />A 0.1μF plus a 47μF capacitor is recommended between VDD and VSS to bypass display multiplexed noise."Ardugohttps://www.blogger.com/profile/09590756089939685926noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-77280912183273754002013-05-06T10:11:03.990+02:002013-05-06T10:11:03.990+02:00What is the blue component on the bottom right of ...What is the blue component on the bottom right of the bread board image? I gather it is some sort of capacitor? why do you need it and what is it's capacitance? thank youMax Bhttps://www.blogger.com/profile/10173670234390875296noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-12279370505293865172012-02-14T04:52:45.323+01:002012-02-14T04:52:45.323+01:00Deadbird, I also purchased the common cathode vers...Deadbird, I also purchased the common cathode version which is 7218B, with common cathode 7 segment LED's. I have spent two days trying to get it to work and all I get is 8's. Have you had any luck getting yours to work? If so, how? I wonder if something needs to be different in the code or wiring with a common cathode?speemanhttps://www.blogger.com/profile/04204109676299852598noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-32579736422592123732011-11-20T06:53:50.819+01:002011-11-20T06:53:50.819+01:00It works, but my digits are not very bright.
Can y...It works, but my digits are not very bright.<br />Can you tell me more about the 7805 and how to use it, and wire it up?<br />I tried using one of these with a 9V power supply.<br />http://store.tautic.com/dual-output-breadboard-power-supply.html<br />But I think it only supplies 300mA (which may be all the 7218 can handle)Warrenhttps://www.blogger.com/profile/08958392800300439453noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-45548093221335612122011-04-27T21:08:13.140+02:002011-04-27T21:08:13.140+02:00hi Ardugo, i need wiring instructions and example ...hi Ardugo, i need wiring instructions and example code (Arduino sketch) to chip ICM7228CIPI<br /><br />Best regardsUnknownhttps://www.blogger.com/profile/09433882459220116239noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-15600057562878468032011-04-27T09:23:49.971+02:002011-04-27T09:23:49.971+02:00Hi,
if you give me more details maybe I can help y...Hi,<br />if you give me more details maybe I can help you.<br />Regards.Ardugohttps://www.blogger.com/profile/09590756089939685926noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-6133467799795893242011-04-26T20:40:56.484+02:002011-04-26T20:40:56.484+02:00good night, I bought one icm7228cipi and i want ge...good night, I bought one icm7228cipi and i want getting it to work, and needed help, I think the wirings must be different and even the code is also different.<br /><br />Much appreciate the help.<br /><br />Best regardsUnknownhttps://www.blogger.com/profile/09433882459220116239noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-23443386132100919572011-03-29T09:48:47.309+02:002011-03-29T09:48:47.309+02:00Hi,
feel free to make any concrete question you ha...Hi,<br />feel free to make any concrete question you have. Otherwise I don't know how can I help you.Ardugohttps://www.blogger.com/profile/09590756089939685926noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-2257833312087217542011-03-26T00:17:55.929+01:002011-03-26T00:17:55.929+01:00Hi. Thanks for this post! I'm actually pulling...Hi. Thanks for this post! I'm actually pulling my hair off trying to use a LED matrix (common cathode) with an ICM7218, I can't get it to work. This bitch is driving me crazy!<br />I wired the chip using the datasheet exactly as mentioned above. Could you please help?deadbirdhttps://www.blogger.com/profile/06569190041477960713noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-18813308814784306112011-02-24T13:01:59.110+01:002011-02-24T13:01:59.110+01:00Hello,
I'm not sure if I undertand well your q...Hello,<br />I'm not sure if I undertand well your question, but all the code in this blog was produced for the Arduino Duemillanove, so it has to be compatible with Arduino Mega.Ardugohttps://www.blogger.com/profile/09590756089939685926noreply@blogger.comtag:blogger.com,1999:blog-8133569459594119617.post-33798262550603493802011-02-22T08:17:14.524+01:002011-02-22T08:17:14.524+01:00Hi,
sory for my bad english,
i used pcf 8574 with ...Hi,<br />sory for my bad english,<br />i used pcf 8574 with arduino mega I would know if I can write pin/pin could you help me please<br /><br />oliviercouteau@francelec89.comol89https://www.blogger.com/profile/14812152973237976479noreply@blogger.com