Projects: FM radio with “old style” LED Bargraph Frequency display
Another gem from Instructables here. This time it’s an FM Receiver with a custom LED Bargraph frequency display, brought to you by Instructables user Thorsten Singer. The bargraph is cool and all, although I would probably add digits to the display to make it more tunable. However, it’s a very well thought out project and nicely constructed, and it is something that you could use every day, so it gets points here. Even the hand drawn schematic is classy.
It’s based on a TEA5767 FM Radio Receiver module that Thorsten bought from BangGood.com, who currently lists the price of these modules at 5 pieces for $5.51 USD, which is on par with some of the current Ebay prices. The controller is an Atmega 328P chip with an Arduino bootloader (the Instructable has links to the source code as well). It appears to have four pushbutton presets, and a rotary encoder for manual tuning.
Other than adding a digital display (I’d even go with a four digit LED display in lieu of an LCD, just to add class and glow to the panel). I’d probably also add a dual LM386 amplifier circuit for the output. This thing is so cool I may actually build one!
There is a short YouTube video below that shows the operation of this receiver.
Published from DFW, Texas