The prototypes I received had a few issues – I neglected to add filtering caps for the supply as the original design didn’t need it – the Arduino host board had them. I also had a couple of wiring errors. The bigger issue was the lack of availability of another part – the three RCA connectors. It turns out that SparkFun no longer has these parts, and when I checked with their supplier (4UCON) the minimum order was 3000 pieces. Not happening.
Version 2.0.2 has some corrections, and incorporates a triple RCA connector that is available from Mouser. The jacks are spread out a little further as well, which is probably a good thing as the original was pretty tight due to the limitations of the Arduino Shield size. The 2.0.2 version is a little wider as well as longer.
The board is now 3.5″ X 2.5″.
I’ll order another set of prototypes to test, and hopefully be able to make a larger order to make available. The existing shield based version still works just fine, you just need to source a Arduino Duemilanove (or equivalent), and solder coax jumpers to panel mount RCA’s as the PCB mount RCA’s the board is designed for are unavailable.
New schematic:
[gview file=”https://www.kv6o.com/wordpress/wp-content/uploads/2020/02/DG5-V2.0.2.pdf” save=”1″]
Prototype PCB’s round 2 have been ordered from OSHPark, more to come!
Freetronics (www.freetronics.com/eleven) has an Arduino equivalent (“Eleven”) that has a true crystal controlled microprocessor and works great with the original KV60 board. I am using it on my Heathkit HW-101.
Excellent! Thanks for the info!
Steve
KV6O
On my counter I installed pannel mount RCA connectors with short coax cables to the board. It worked great…
Vic
K7BGV
Vic,
I did the same thing on mine…
Justin B.
KI5GKD
I am interested in the new(latest) board,I would like to make a pre-order for 2 boards and 2 programmed processors
Colin –
I sent you an e-mail to your gmail address with the info.
Hi Stephen,I am still very interested in the new board and processors,however in view of the current situation with the big”C” I will have to put it on hold for the moment,best regards Colin (G1PGI)
Hi, KV60 is a very good project for my old radio, last week I got detailed information on the website
I didn’t hesitate to do it, so I looked for the devices listed and assembled them into the GD5 V2.0.2 PCB. The problem was that the display was normal. When we continue with TS-520V Frq 0.000.0 L, no change. I tried measuring the signal exiting the TS-520 with an oscilloscope
VFO = 0.28Vpp , CAR =0.28Vpp, HET=0.42
Read the frequency with my oscilloscope correctly. But I’m not sure my signal strength is too low. Normal signal strength VFO, CAR, HET What size must it be?
Thank you very much
Hi, KV60 is a very good project for my old radio, last week I got detailed information on the website
I didn’t hesitate to do it, so I looked for the devices listed and assembled them into the GD5 V2.0.2 PCB. The problem was that the display was normal. When we continue with TS-520V Frq 0.000.0 L, no change. I tried measuring the signal exiting the TS-520 with an oscilloscope
VFO = 0.28Vpp , CAR =0.28Vpp, HET=0.42 Vpp
Read the frequency with my oscilloscope correctly. But I’m not sure my signal strength is too low. Normal signal strength VFO, CAR, HET What size must it be?
Thank you very much
hello !!
I would like to make a order 2 boards and 2 programmed 328p chip