开云体育

Testing unit idea

Tim All Messages By This Member #6325 Testing filter boards would be very easy if we had a nice widget that had simple controller and an 12c socket ribbon cable plugged into to turn filter banks on and off. Would make tweaking toroids easier for me if rig was not needed. I use SA or signal generator. Maybe build on bread board ?? Build a few and loan them out as needed. Just a thought, unfortunately I am not much on designing nor programming. Tim W4YN?
Oliver KI3P All Messages By This Member #6327 I use an ESP32 dev board like this one on Amazon for this purpose: I have it permanently stuck in a bread board along with a breakout cable for a 10-pin IDC as shown in this photo: I connect the appropriate pins of the MCU to the appropriate ribbon cable pins and use the attached script to control the relays from my lab computer via the USB serial link. On Monday, April 7th, 2025 at 5:44 PM, Tim via groups.io <w4yn@...> wrote: toggle quoted message Show quoted text Testing filter boards would be very easy if we had a nice widget that had simple controller and an 12c socket ribbon cable plugged into to turn filter banks on and off. Would make tweaking toroids easier for me if rig was not needed. I use SA or signal generator. Maybe build on bread board ?? Build a few and loan them out as needed. Just a thought, unfortunately I am not much on designing nor programming. Tim W4YN? BPFTest-ESP32.ino BPFTest-ESP32.ino
K9HZ All Messages By This Member #6328 开云体育 You can do that with an Arduino on a breadboard and a few female to male IDC jumper wires… use the attached document (its out on the GITHUB too).? The sketch to do this was written by Oliver for OUR testing of the BPF ? Same goes for the LPF but there are Two ways to do this module.? You can do that with an Arduino on a breadboard and a few female to male IDC jumper wires… use the attached document (it’s out on the GITHUB too).? The sketch to do this was written by Oliver for OUR testing of the LPF.? The other way to di this is NOT POPULATE U15… but populate R8-R11… and use the binary code from the attached document to switch the filter path through J21… and connecting directly to the TWO filter connectors on the filter board.? Easy peasy. ? I’ll write this up when I have time. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Tim via groups.io Sent: Monday, April 7, 2025 4:44 PM To: [email protected] Subject: [AmateurRadioBuilders] Testing unit idea ? Testing filter boards would be very easy if we had a nice widget that had simple controller and an 12c socket ribbon cable plugged into to turn filter banks on and off. Would make tweaking toroids easier for me if rig was not needed. I use SA or signal generator. Maybe build on bread board ?? Build a few and loan them out as needed. Just a thought, unfortunately I am not much on designing nor programming. Tim W4YN?
K9HZ All Messages By This Member #6330 开云体育 And if you want to write your own skit… see the attached file ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Oliver KI3P via groups.io Sent: Monday, April 7, 2025 6:54 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] Testing unit idea ? I use an ESP32 dev board like this one on Amazon for this purpose: ? I have it permanently stuck in a bread board along with a breakout cable for a 10-pin IDC as shown in this photo: ? ? I connect the appropriate pins of the MCU to the appropriate ribbon cable pins and use the attached script to control the relays from my lab computer via the USB serial link. ? On Monday, April 7th, 2025 at 5:44 PM, Tim via groups.io <w4yn@...> wrote: Testing filter boards would be very easy if we had a nice widget that had simple controller and an 12c socket ribbon cable plugged into to turn filter banks on and off. Would make tweaking toroids easier for me if rig was not needed. I use SA or signal generator. Maybe build on bread board ?? Build a few and loan them out as needed. Just a thought, unfortunately I am not much on designing nor programming. Tim W4YN? ? T41_V12.6_I2C_Assignments.xlsx T41_V12.6_I2C_Assignments.xlsx
dick faust All Messages By This Member #6331 There is a nice breadboard similar to a UNO style for Arduino.? I have attached a pix of the 30 pin version which is the most popular.? There also is one for the 38 pin.? Amazon has some but Ali Express has a better selection of suppliers, some as low as $2 or kits with a ESP32 30p / 38p Expansion Board and an ESP32 development board. ? Dick K9IVB ESP32 30p Expansion Board.jpg
Jack, W8TEE All Messages By This Member #6335 All: I would suggest getting the exact version of the ESP32 Dick is talking about as there are some differences between boards in the ESP32 family so pin-outs are not identical. Indeed, some pins do strange things on boot before they revert to a normal I/O pin. Jack, W8TEE On Tuesday, April 8, 2025 at 12:54:14 AM EDT, dick faust via groups.io <dick_faust@...> wrote: There is a nice breadboard similar to a UNO style for Arduino.? I have attached a pix of the 30 pin version which is the most popular.? There also is one for the 38 pin.? Amazon has some but Ali Express has a better selection of suppliers, some as low as $2 or kits with a ESP32 30p / 38p Expansion Board and an ESP32 development board. ? Dick K9IVB -- Jack, W8TEE
dick faust All Messages By This Member #6346 If you do not want to use a 30 pin ESP32 [Oliver is using a 38 pin version] here is a link for a 38 pin Expansion board. ? If you do not want to solder up an IDC cable Adafruit has a "10-pin IDC Socket Rainbow Breakout Cable" ? Or you can get a "10pin DIY JTAG IDC USB Logic Analyzer IC Test Clips Test Hook Grabber Test Probe" At Ali Express ? Might be able to construct a test stand from entirely purchased parts. ? Dick K9IVB
Tim All Messages By This Member #6351 Dick Do you have a link to exact ESP32 Development board you used and know works? Tim ?
dick faust All Messages By This Member #6358 Tim I have not built this up as yet.? You need to ask Oliver which board that he used.? If you look at the Pix that Oliver attached and count the pins it is a 38 pin ESP32 Development board [I think Wroom but cannot decipher the last few characters on the part].? The link that Oliver provided at Amazon was for a 30 pin board.? Oliver's board has a jack for a Wi-Fi antenna , but that is not used in the test stand. I am going to make a schematic shortly, so I can identify the exact pins that are used and be sure that the extra I/O pins on the 38 pin versions are unused.? I will post it here for review unless Oliver has one already available.? I will also try to show how the Expansion Board(s) fit with the Development board(s) when plugged into an Expansion Board. ? Just as an aside, I am working on a special application of a clock operated switch using the ESP32 as a real time clock attached to my WiFi network for NPT time reference.? ? Dick K9IVB
Oliver KI3P All Messages By This Member #6359 I shared an amazon link earlier to a board that should work. I don't recall exactly where I bought the particular board I have on hand and can't find a purchase record since it was many years ago. toggle quoted message Show quoted text -------- Original Message -------- On 4/9/25 2:36 PM, dick faust via groups.io wrote: Tim I have not built this up as yet.? You need to ask Oliver which board that he used.? If you look at the Pix that Oliver attached and count the pins it is a 38 pin ESP32 Development board [I think Wroom but cannot decipher the last few characters on the part].? The link that Oliver provided at Amazon was for a 30 pin board.? Oliver's board has a jack for a Wi-Fi antenna , but that is not used in the test stand. I am going to make a schematic shortly, so I can identify the exact pins that are used and be sure that the extra I/O pins on the 38 pin versions are unused.? I will post it here for review unless Oliver has one already available.? I will also try to show how the Expansion Board(s) fit with the Development board(s) when plugged into an Expansion Board. ? Just as an aside, I am working on a special application of a clock operated switch using the ESP32 as a real time clock attached to my WiFi network for NPT time reference.? ? Dick K9IVB
dick faust All Messages By This Member #6422 Thought putting together a simple schematic and some notes would be easy.? It involved way more than I expected. Attached is a zip file of a package of information on how to construct a test stand for the BPF & LPF? Filter Boards that does not need the Main Board connected.? The test stand uses an inexpensive ESP32 chip and a 10 pin IDC cable with? Dupont connectors. The ESP32 was used because Oliver KI3P uses that for his testing and I am grateful for his help and information while putting this together.? An Ardunio board like a Nano could also be used if the code and connections were adjusted. ? Dick K9IVB BPF_LPF_Test Stand.zip BPF_LPF_Test Stand.zip
Tim All Messages By This Member #6429 I will have a few extra 38 pin MCU and matching Breakout boards. Tim W4YN? ?

Previous Topic Next Topic