The new 65K Color OLED Displays -- about 1 Inch Square

New Color Display Mania!

8/15/2019 ~ Yet Another Display

In today's mail I got two 65K OLED's that use the ST7735 Library and are smaller than the one I posted yesterday which is the SSD1331 type. These are way cool and I got the two for less than $6 including shipping! (160 X 128 pixels)

Comparison to the one of yesterday. About 2/3 of the size.

Sorry for the dark photo.

73's

Pete N6QW

****************************************************

8/14/2019

Recently I discovered that there is a whole new crop of Color OLED Displays and by color I mean 65K choices. Below is a dummy display where I took the "Hello World" test program and did a bit of experimenting with how to place info on the screen and how to call up colors. Got the Splash Screen to Work -- a major breakthrough!!!!

We are a long way from having code written for use with the new transceiver; but I am excited about the possibilities. These are compact low power displays which should fit well with small low power QRP rigs. It only gets better.

Mind you the display is less that 1" inch Square. There is a lot of info on that screen including which VFO is active and the Step Tuning Rate as well as the Mode. The code will have my standard Tune Function and when engaged the USB (or LSB) will be blanked out and the word TUNE will appear on the screen.

73's

Pete N6QW

January 26, 2024. A simple CW Transceiver/Transmitter

Cruise through the lower part of the ham bands bands and what do you hear? Well, FT-8 and CW. Often you will not hear any SSB stations yet go to the lower part of the bands, and it is a cacophony (I love that word) of bad sounding signals and some high-speed keying. Fast is not so much of the issue as is bad, run together and jerky keying. But none the less our hobby started there. So, you could crank down your ICOM 7300 and watch the waterfall on CW or you could homebrew a radio. Actually, to do CW right you need more thought up front than you do with a SSB transceiver. Often, I will state that a CW Transceiver is much more difficult to build than a simple SSB rig. I published two articles in QRP Quarterly on CW transceivers and all I got was a yawn so maybe history will repeat itself. Yawn! 30M CW Transceiver with RIT! Of interest is that the LO is a Varactor tuned LC oscillator using a NE602. Look closely at the RIT circuit which is only activated on ...

March 31, 2024. Happy Easter to those who celebrate this day.

What a great day to Binge on Chocolate and experience the pain of that filling that has been leaking. I would be in that category with the leaking filling(s) had I not just spent an amount equivalent to one of the fancy new uptown appliance box transceivers on two filling repairs. Well at least I can binge on the Chocolate bunnies without fear of pain. Regrettably everything appears to have jumped in price including the price of parts. Well not so much the parts as the shipping costs. That notably is seen in the eBay treasures. I spotted a nice heathkit DX-20 for about $50 and the shipping was $65. Likely it is a twofer with part being a way to in effect charge a higher price by inflating the shipping and in part by increased shipping costs. Shipping with insurance across the US was about $150 for this jewel and that was three years ago. 6AM on the Left Coast ~ 20M Easter Sunday! My only hope is the cost of Chocolate Bunnies remains steady although a pound of See's Candies f...

August 30, 2024. A PNP 20M SSB Transceiver

Shown below is the Block Diagram for the 20M PNP SSB Transceiver steered in the Transmit Mode . The components shown in the dotted block are relay steered so that the block module is single pass and amplifies in a single direction. The Block diagram show steered in Transmit. Essentially the steering process works so that the IF Module input follows the Balanced Modulator on Transmit and then the input side follows the Receive Mixer on Receive. All done with some relays and a bit of RG174U coax. For those who count things in detail, this block diagram is not unlike what was used for the PSSST Transceiver which can be found on my website . Yes, a warmed over P3ST only using PNP devices. TYGNYBNT. 73's Pete N6QW

Pay More and Get Less. Flash the Cash!

Search This Blog