❤️ Get My Free Newsletter: https://temporarilyoffline.com/pages/newsletter-signup
🚐 If you like RV Videos, Check out my RV Channel: https://www.youtube.com/@livingforalivingRV
🚀 Buying Starlink? Get $100 CASH! Use my referral link and we BOTH get $100, paid directly to our bank accounts (or applied as service credit). Terms apply: https://go.temporarilyoffline.com/5gbxnk
Click the 👍 Like Button, 🤡 Leave a Comment, ❤️ Subscribe
👉 Support The Channel 👈
❤️ Patreon: https://www.patreon.com/temporarilyoffline
📺 Youtube Memberships: https://www.youtube.com/temporarilyoffline/join
💸 Tip Jar: https://paypal.me/temporarilyoffline
🛒 Amazon Link: https://www.amazon.com/shop/temporarilyoffline
📻 Use Code TO15 for $15 off at Radioddity: https://www.radioddity.com/?ref=bpajyqft
🖍️ How I make my Thumbnails: https://partner.canva.com/c/3622632/647168/10068
👉 Fun Stuff 👈
🫵 We want YOU on TOADs Discord: https://discord.gg/97tkMEc
🕊️ Twitter: https://twitter.com/KiloMike9Golf
😸 Github: https://github.com/TemporarilyOffline
Where possible, all links are affiliate links, this youtube thing is an expensive endeavor and every little bit helps.
In this Homebrew Workbench Roundtable, Tobias KK7BCO and I are joined by first-time guest Rishav, from Nepal, who recently completed his master’s degree with research focused on relative navigation between two spacecraft and is soon to continue his work as a researcher in spacecraft guidance, navigation, and control (GNC).
HECKT-DUINO is a homebrew Arduino-based LC meter that Tobias and Rishav have been collaborating on. The design traces its roots to Neil Heckt’s article, "Build this self-calibrating LC meter to measure capacitance and inductance," published in the June 1996 issue of "Electronics Now".
For this build, the software has been rewritten for the Arduino Pro Mini using the ATmega328P, with the aim of keeping the code open source, readable, and hackable. Rather than treating the instrument as a black box, the project makes both the hardware and software accessible to anyone who wants to understand how the meter actually works. Rishav walks through the analog circuitry in detail, breaking the design into its main subsystems: the power supply, LC tuned circuit, and relaxation oscillator. The discussion then follows the signal through the circuit and explains how the meter determines inductance and capacitance from changes in oscillation frequency.
A particularly clever part of Heckt’s design is its self-calibration method. By temporarily switching a known reference capacitor into the LC network and measuring the resulting change in frequency, the meter can determine the effective inductance and capacitance of the actual circuit. This means that stray inductance and capacitance present in the physical build are incorporated into the calibration rather than simply ignored.
We also discuss the practical build process, debugging the circuit one subsystem at a time, and why moving the firmware to an Arduino makes the project particularly attractive as a beginner-friendly homebrew instrument. The Arduino implementation makes the frequency measurement, calibration procedure, calculations, display handling, and measurement logic readily available for inspection and modification.
*A small note from Rishav:* I may have stumbled over a few things or not explained some of the technical details as clearly as I would have liked to. My apologies in advance if that happened. That said, I’ll make sure the project documentation makes up for it. The circuit, calculations, calibration method, and build process will all be explained much more clearly and carefully there. I hope you enjoy the podcast, and even better, I hope it inspires you to build your own LC meter!
GitHub repository and project documentation: https://github.com/mathmuggle/heckt
Rishav’s blog: https://mathmuggle.com/
Arduino PRO MINI: https://link.amazon/B02lyB8gf
FTDI programming board for Arduino: https://link.amazon/B0beQfhkc
Screen: https://link.amazon/B08cqbpM4
Any ATmega328P-based Arduino should work. The Pro Mini is particularly well suited to this build because it contains little more than the circuitry required to run the microcontroller, without the onboard USB programming hardware found on boards such as the Arduino Uno. This makes it inexpensive and compact for a permanent homebrew instrument, while using the same board also keeps the pinout consistent with the project documentation.
Note that all of these are available also on eBay and Aliexpress.
Connect with us:
* Discord: https://discord.gg/WVE3vVveWU
* YouTube: https://www.youtube.com/c/redsummitrf
* TikTok: @redsummitrf
* X (formerly Twitter): @NJ7V_
Support the channel:
* Buy us a Coke: https://www.buymeacoffee.com/RedSummitRF
* Red Summit RF Amazon Storefront: https://www.amazon.com/shop/redsummitrf
Running Windows Software on Linux: My Epic Tech Battle! #shorts
Running Windows software on Linux Mint? It’s not impossible! Witness the ingenious workaround that makes it happen, powered by ingenuity and a bit of digital wrestling.
👉 Full Video: https://youtu.be/5FWZ1L3b5wY
Today’s Patient:
👉 My list of refurbed rigs: https://temporarilyoffline.com/blogs/tos-blog/revolving-list-of-for-sale-items
👉 Or Get One New: https://go.temporarilyoffline.com/im1jzs
HRCC After Chat: Can We Do A Spooky Show? & Your Favorite Ham Radio 3D prints
We’re going to be doing some serious planning in the afterchat. Come join us if you have ideas
My intro to Amateur Radio pamphlet is here: https://www.patreon.com/posts/126015747?utm_campaign=postshare_creator
The Coolest Ham Radio Gear:
As an Amazon Affiliate I earn from qualifying purchases
—————————————————————————————————————————
📻 My new favorite beginners Radio – Baofeng Mini: https://www.radioddity.com/products/baofeng-uv-5r-mini?ref=bkobuwhc
📡 My Big List of No-Regret Gear: https://amzn.to/415oY6s
📡 You can get $10 off the VGC VN-N76 using the code "josh" here: https://www.verotelecom.com/VR-N76-Dual-Band-Handheld-Radio-p2511333.html?
$15 off at Radioddity when you use the code JOSHNASS https://www.radioddity.com/?ref=bkobuwhc
📡 My Favorite ham radio portable gear items! Check out Gigaparts for 2x the points off the gear I use the most!
https://www.gigaparts.com/nsearch/?lp=JOSH
📡 My favorite Handheld radio antenna is from Signal Stuff Signal Stick https://signalstuff.com/?ref=622 (This is an affliate link)
📡 I recommend the Ed Fong J-Pole? https://www.kbcubed.com/DBJ-2H-Amateur-Ham-2m-70cm-Dual-Band-Portable-Rollup-Antenna-by-Ed-Fong-p406009746
📡 Check out Radioddity ham radio radios $15.00 off Coupon code: JOSHNASS https://www.radioddity.com/?ref=bkobuwhc
📡 Great Value HTs: HTs: https://www.buytwowayradios.com/?cmid=amsreGRvTmttM0k9&afid=Mkx1eE1uN2M0S1k9&ats=bHNrMHVhZ3lZcjQ9
📡 Chameleon Antennas make the most robust antennas on the market, check them out here: https://chameleonantenna.com?bg_ref=99VqhYXETt
📻 Support Ham Radio Crash Course Content 📻
————————————————————————
Patreon – https://www.patreon.com/hoshnasi (includes monthly newsletter, stickers and Patron perks)
📸YouTube – https://www.youtube.com/c/HamRadioCrashCourse/membership (includes early access to videos, membership YT badge and custom emojis)
Shop HamTactical: http://www.hamtactical.com
Shop Our Affiliates: http://hamradiocrashcourse.com/affiliates/
Shop Our Amazon Store: https://www.amazon.com/shop/hamradiocrashcourse
As an Amazon Associate I earn from qualifying purchases.
★ FOLLOW ME HERE ★
🪩 Website http://hamradiocrashcourse.com
📸 YouTube https://www.youtube.com/c/HamRadioCrashCourse
💻 Twitch https://m.twitch.tv/hamradiocrashcourse
Podcast https://hamradiocrashcourse.podbean.com/
💻 Discord https://discord.gg/xhJMxDT
📸 Facebook https://goo.gl/cv5rEQ
📸 Twitter https://X.com/Hoshnasi
📸 Instagram https://instagram.com/hamradiocrashcourse
📨 Physical Mail Josh Nass P.O Box 5101 Cerritos, CA 90703-5101
Music by Sonic D:
Soundcloud.com/sncd
Twitter.com/sncd
Facebook.com/djsonicd
Practical, decentralized communications — no towers, no carriers, no permission needed. This channel covers ham radio, Meshtastic and mesh networks, GMRS, and off-grid gear for staying connected anywhere.
★ Support the channel & help spread the word about off-grid comms ★
📧 Email list: http://hamradio2.com/signup2
💬 Text updates: http://hamradio2.com/textme
✅ Patreon: https://www.patreon.com/c/HamRadio
✅ Shop our products: http://shop.hamradio2.com
✅ Amazon store: https://www.amazon.com/shop/hamradio2.0
Best Digital Interface for HF Radio: https://digirig.net/product/digirig-dr-891/p/1/
📻 Our Sponsors 📻
R&L Electronics: https://www.randl.com
Buy Two Way Radios: https://geni.us/Dr954X
Save 20% at https://hamradioprep.com with code JASON20
FlexRadio: https://flexradio.com
BaofengTech: https://baofengtech.com/ref/hamradio2/
Commissions may be earned on affiliate links.
New Tanker Radio Gear:
New Tank Radio Pillow – https://www.etsy.com/listing/4295008136/tank-radio-pillow-for-amateur-radio
New Tank Radio Black Out T Shirt – https://grapevineamateurradio.com/products/tank-radio-black-out-t-shirt-on-demand-order
Tank US Band Plan Pad – https://quirkyqrphamradios.etsy.com/listing/1657938891
Hoodies – https://grapevineamateurradio.com/products/tank-radio-hoodie-limited-time
Boonie Hats – https://www.gigaparts.com/tank-radio-logo-boonie-hat.html
Sticker Pack – https://grapevineamateurradio.com/collections/combo-packs/products/tank-radio-official-sticker-pack
Help support me by:
spooltenna – https://www.spooltenna.com/?sca_ref=11327622.GxC4hHpdaPs
RollerCam Website – https://classic.avantlink.com/click.php?tool_type=ml&merchant_link_id=6e7562a0-f7b0-4d9a-b15e-25ce3aedb94a&website_id=16611296-f891-4f8b-8010-5fa29c2cab5f
Gigaparts-Double Points https://www.gigaparts.com/nsearch/?lp=KG5AHJ%20INFLUENCER%20PAGE
5% off at Alpha Antenna – https://www.alphaantenna.com/?aff=20
Patreon – https://www.patreon.com/TankRadio
Buy Me a Beer: https://buymeacoffee.com/TankRadio
PayPal: https://www.paypal.com/paypalme/TankRadio
Amazon affiliate:https://amzn.to/3Zlhjzn
Tank Radios T-Shirt : https://grapevineamateurradio.com/collections/youtubers-bunch/products/tank-radio-short-sleeve-t-shirt-special-order
Follow me on:
Discord: https://discord.com/invite/5gGCq4wY8n Channel Tank Radio
Twitter: https://twitter.com/KG5AHJ
Unboxing a DAMAGED Retevis Radio: Can It Be Fixed? #shorts
A vintage radio is put to the test! We check for signs of life, powering it up via workbench supply. Will this classic piece of tech hum back to life or remain silent?
👉 Full Video: https://youtu.be/5FWZ1L3b5wY
Today’s Patient:
👉 My list of refurbed rigs: https://temporarilyoffline.com/blogs/tos-blog/revolving-list-of-for-sale-items
👉 Or Get One New: https://go.temporarilyoffline.com/im1jzs
The Packs:
🎒 Multi-Day Backpacking: https://evolvedsupplyco.com/
🎒 AbleCarry Max EDC: https://ablecarry.com/products/max-edc-ripstop-black
🎒 The Day Pack: https://www.gossamergear.com/products/vetta-20-daypack
📻 Support Ham Radio Crash Course Content 📻
————————————————————————
Patreon – https://www.patreon.com/hoshnasi (includes monthly newsletter, stickers and Patron perks)
📸 YouTube – https://www.youtube.com/c/HamRadioCrashCourse/membership (includes early access to videos, membership YT badge and custom emojis)
Shop HamTactical: http://www.hamtactical.com
Shop Our Affiliates: http://hamradiocrashcourse.com/affiliates/
Shop Our Amazon Store: https://www.amazon.com/shop/hamradiocrashcourse
As an Amazon Associate I earn from qualifying purchases.
★ FOLLOW ME HERE ★
🪩 Website http://hamradiocrashcourse.com
📸 YouTube https://www.youtube.com/c/HamRadioCrashCourse
💻 Twitch https://m.twitch.tv/hamradiocrashcourse
Podcast https://hamradiocrashcourse.podbean.com/
💻 Discord https://discord.gg/xhJMxDT
📸 Facebook https://goo.gl/cv5rEQ
📸 Twitter https://X.com/Hoshnasi
📸 Instagram https://instagram.com/hamradiocrashcourse
📨 Physical Mail Josh Nass P.O Box 5101 Cerritos, CA 90703-5101
Music by Sonic D:
Soundcloud.com/sncd
Twitter.com/sncd
Facebook.com/djsonicd
Dave has been recieving a lot of questions recently about what a deciBel is and how exactly they work. Dave explains what they are, and even dives deeper into how to use them, and reveals a few tricks on how dB’s make everything just that much easier!
Subscribe:
https://youtube.com/davecasler
Become A Channel Member: https://www.youtube.com/channel/UCaBtYooQdmNzq63eID8RaLQ/join
Join Patreon:
patreon.com/ke0og
Videographed and Edited by Heidi Kulbeth
#amateur radio
#ham radio
#technician license
#general license
#extra license
#ham radio training
#ke0og
#dave casler
#ham radio answers
#icom 7300
#antenna
#dipole
#end fed dipole
#mag loop
#magnetic loop antennas
To learn more about me, visit: https://dcasler.com
To support my channel financially, visit: https://dcasler.com/support (offers several options)
To pose an Ask Dave question, email to askdave@arrl.org. Feel free to include pictures or drawings to help clarify. I may answer your question directly, via an Ask Dave video, or in my monthly column "Ask Dave" in QST.
Theme music is "Sour Tennessee Red," by John Deley and the 41 Players, courtesy YouTube Music Library. You can listen to the entire song here: https://youtu.be/Vfc9sAQjJtc
I use drawings from OpenClipArt.org, including the "walking man"
Thanks to my sweet wife, Loretta, KBØVWW, for both audio and video assistance! (Her website is www.aldea-art.com.)
My primary website: http://www.dcasler.com
My publishing website: http://www.mtsneffelspress.com, where you can find my fantasy and science fiction books.
My Amazon author page, which lists my print and Kindle books: http://www.amazon.com/-/e/B00471I0Q4.
