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uBITX wiring question
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Hi,
Sorry if this has been addressed, but I have a question regarding the grounds on this board. Are the grounds for the Raduino (terminal 4) and the audio grounds considered common grounds? And can they all be tied together to a metal chassis? I believe I have read of people isolating the mike & speaker jacks from a metal chassis, but I'm not sure why this would be necessary The schematic shows the keyer jack grounded to chassis, but not the mike or speaker jacks. Is the lack of a ground symbol saying the mike & speaker shield terminals should be isolated? Thanks for the clarification!? Bill A. |
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The grounds for the arduino are located on several pins - marked gnd The rig grounds are the black wires but i test them to be sure. I keep my grounds short and tie them to the chassis. Either directly to chassis or using a small copper blank pcb as a bus or combination But all my gnds go to a common ground. Mr rule is I check all the black wires - to be sure they are common and go to ground as you say , the diagrams shows the audio to gnd and the black speaker wire shows continuity to common ground? --- so I always put them all to ground. joe On Fri, Apr 20, 2018 at 10:40 PM, Bill <allerthomes@...> wrote: Hi, |
¿ªÔÆÌåÓýNot all ground wires are black and not all black wires are ground.? The mic ground is blue and the ground for keyer and encoder is yellow.? The encoder A connection is black. Mike K5ESS ? From: [email protected] [mailto:[email protected]] On Behalf Of Joe ? The grounds for the arduino are located on several pins - marked gnd The rig grounds are the black wires but i test them to be sure. ? I keep my grounds short and tie them to the chassis. Either directly to chassis or using a small copper blank pcb as a bus or combination But all my gnds go to a common ground. ? Mr rule is I check all the black wires - to be sure they are common and go to ground as you say , the diagrams shows the audio to gnd and the black speaker wire shows continuity to common ground? --- so I always put them all to ground. ? ? joe ? ? ? ? ? On Fri, Apr 20, 2018 at 10:40 PM, Bill <allerthomes@...> wrote: Hi, ? |
¿ªÔÆÌåÓýAnd the volume control ground is green. ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Joe ? The grounds for the arduino are located on several pins - marked gnd The rig grounds are the black wires but i test them to be sure. ? I keep my grounds short and tie them to the chassis. Either directly to chassis or using a small copper blank pcb as a bus or combination But all my gnds go to a common ground. ? Mr rule is I check all the black wires - to be sure they are common and go to ground as you say , the diagrams shows the audio to gnd and the black speaker wire shows continuity to common ground? --- so I always put them all to ground. ? ? joe ? ? ? ? ? On Fri, Apr 20, 2018 at 10:40 PM, Bill <allerthomes@...> wrote: Hi, ? |
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Thanks for the additional info.
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I was only referring to the black wires which I tested for ground continuity. Joe Ve1bwv On Fri, Apr 20, 2018, 11:36 PM K5ESS <k5ess.nothdurft@...> wrote:
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